Make sure that you add for the slope of the roof. If your roof is more on the flatter side, then it’s expected to have a heavier load. A roof that lays practically flat will have a much heavier load than a steeper roof that allows rain, snow, and ice to roll right off. Metal Roofing Thickness Recommendations that Include Paint. If you choose the textured varieties, you’ll have a less slippery option. What Size Plywood should You Use for your Roof? This makes it more energy efficient. Generally 12 – 15mm ply is the most commonly used thickness. Is there a better choice between the two or will either one work just fine? 11/32. The ideal thickness for the standard rafter spacing of 24 inches is 5/8 th of an inch. I spent 4 years representing a roofing company in NC. To know how many sheets for the roof sheathing is required it`s enough to make simple calculations. Metal Roofing • R-Values from 10.2 to 47.4 • Single layer of sheathing For Shingles and or Plywood, FRT or RB OSB or THICKNESS P.S.F. It has been estimated that OSB has a stronghold of ¾ of the market share, mainly because it’s the more affordable option. Compare; Find My Store. Plywood's Advantage over OSB? There is definitely rust on the steel frame, but they are still solid. Plywood Thickness. Plywood is made out of laminated sheets of veneer. Thickness is the key specification of PLYWOOD. 23/32 in. Metal roofing is thinner, but is often corrugated or formed with a standing seam, which can increase the total roof height by 1 to 2 inches. After the 1960s, the predominant residential roofing substrate became 1/2″ CDX plywood. This material separates the roofing from the substrate, provides secondary weather protection and guides drainage down the side of the roof. Multi-ply is a catchall term for plywood with seven or more plies. In addition, the roof plywood may need h-clips to hold the plywood in place and create a sturdier decking especially on any rafter spacing of 24 inches or greater. You can get plywood sheets with a length of up to 10 feet. It doesn’t matter how experienced of a DIYer you are. Divide that by 32 (the square footage of each 4×8 plywood sheet). Shop plywood … To find the amount of plywood needed to cover a roof start by finding the area of the roof. The main floor area is 600 square feet and the wing floor area is 150 square feet. Over time, shiplap fir wood resin dissipates, causing the boards to shrink, crack, form knot holes, and become extremely brittle. As always, add a few sheets to be sure. Multiply the width and length of each slope and you should get the square footage of that slope. (4) All edges of sheathing described in Sentence (3) shall be support ed by blocking or framing. Panel edges shall have approved tongue-and-groove joints or shall be supported with blocking, unless 1 / 4 -inch minimum thickness underlayment or 1 1 / 2 inches of approved cellular or lightweight concrete is placed over the subfloor, or finish floor is 3 / 4 -inch wood strip. When you inquire or quote for plywood, you must state what thickness you will buy or sell clearly . (2) The thickness or rating of roof sheathing on a roof not used as a walking deck shall conform to either Table 9.23.15.7.A. A wide variety of roofing plywood thickness options are available to you, such as type. However, it’s important to note that OSB will only swell when it gets really wet to the point that it’s soaked for a long time. It might be tempting to do it yourself especially if you’re looking to save money. Roof decking bakes in the sun, freezes in the cold, and may be surrounded by moisture laden (potentially salty ocean) air . A 3 / 4 ” sheet is actually 23 / 32 ” thick. It doesn’t swell when it gets wet unlike OSB. 3/8 + See All. With 24-inch truss/joist spacing, the National Wood Flooring Association recommends 1-inch OSB underlayment, compared to 7/8-inch plywood. 9.23.16. wall Sheathing Do you want to stay away from potential accidents? The job will also be done right which will minimize mistakes and wastage. Speaking of DIYers, should you do the sheathing yourself or should you hire a professional? The minimum thickness of plywood used for roofing is 3/8 th of an inch. What is the Actual Thickness of a Sheet of Plywood. We’ll discuss plywood vs OSB more later. Metal Roofing Gauge and Thickness - What You Need to Know. By sumitting this form, you agree to be contacted about your project by Homeadvisor and / or other service partners using automated phone technology and / or email. However, they have a preference for plywood. It’s a top choice because of its characteristic wherein it expands evenly when exposed to water unlike OSB wherein only the edges expand. Metal panels are attached to the sheathing to keep it dry. Plywood thickness for roofing. Plywood. Lumin (4) ... Hardwood Plywood Poplar Core FSC 2440 x 1220 x 5.5mm. That’s considered to be the minimum. Roof sheathing products come in a variety of different thicknesses, which are chosen based on the weight of the roof and the distance between joists. Because the actual thickness may vary measuring the plywood is the only accurate way to determine its thickness. The thickness of ply you install can vary depending on your builder and how your roof trusses are spaced. Understandably, it’s the most expensive. A 3 / 4 ” sheet is actually 23 / 32 ” thick. A 4×8 sheet of plywood is 32 ft 2. Read on to know more about this material. You’ll also learn how to calculate to find out how many sheets you need for your roof. Plywood sheets are differentiated according to size, thickness, and performance characteristics. The savings you’ll get per sheet will really add up. On anything much bigger then I tend to go for 18mm. A half inch CDX plywood is often used with rafter with 24-inch spacing. Find the Area of a Roof. You won’t see imperfections. The minimum plywood or non-veneer (O.S.B or wafer board) deck thickness for low-slope roofing (i.e., membrane roofing) shall be a minimum 12.7 mm (1/2")and as indicated in the applicable the BC Building Code (latest edition). Simply put, it’s not safe. If it does, it can stay that way even if you dry it out. This kind of plywood can be used on roofs with minimal load; steeper rather than flatter roofs will have lesser load per sq. Before we start talking about the different options, it’s important to note that plywood has different grades: This is the highest grade there is. There’s a formula to be applied. Most homes have a layer of plywood or sheathing covered by a weather-resistant barrier. In addition to the thickness, you also need to make sure that you choose plywood that’s graded for outdoor use. That, in a nutshell, is the one big advantage plywood holds over OSB. Ready to talk to screened pros? 97. Plywood has shown better resilience against water. Let’s say that the main floor area is 10 by 20 feet and the wing floor area is 10 by 15. It’s important to note that industry experts, including the National Roofing Contractors Association and Asphalt Roofing Manufacturers Association, recommend both. Plywood is often sold in 1 / 4 “, 1 / 2 “, or 3 / 4 ” nominal thicknesses, but the actual thickness is often 1 / 32 ” thinner. With 24-inch truss/joist spacing, the National Wood Flooring Association recommends 1-inch OSB underlayment, compared to 7/8-inch plywood. Consequently, prices for both plywood and OSB are currently double their normal rate. The industry offers a thickness of anywhere from 5/16 inch to ¾ inch. I thought perhaps he made a mistake but no this is what he is proposing. 23/32. The minimum thickness of plywood used for roofing is 3/8 th of an inch. If they know that you’re shopping around for the best deal, you can expect to get the best quotes. The number you’ll get is the number of sheets that you need. or Table 9.23.14.5.B. This characteristic makes it a top choice for areas with unpredictable weather. The ideal thickness for the standard rafter spacing of 24 inches is 5/8 th of an inch. Adding 20% is industry practice. You’re in luck if you have a conventional gable roof because it should have slopes on each side that are identical in dimensions. The requirements for roof plywood vary from city to city but generally need to be at least 1/2 inch thickness. Knowing this number can help you determine how many sheets of plywood you need for your roof. CDX works fine in 1/2" or 5/8" thickness. (b) a continuous sheet of aluminum not less than 0.61 mm in thickness. Roof decking is the material that lies on top of the main roofing structure, and the underlayment and roof covering are applied on top. x 4 ft. x 8 ft. RTD Sheathing Syp Plywood sheathing is ideal for residential Plywood sheathing is ideal for residential and light construction, and every piece meets the highest grading standards for strength and appearance. The thickness of the plywood can be controlled by the number of plies glued together. You need to measure your roof using a tape measure. Sometimes, you’ll see finished outer layers for cabinetry and other furniture pieces on blockboard. It is certainly not preferred by professionals interested in quality. Do you want to save money in the long run? 1. Browse our range of roof boards below and choose between general-purpose hardwood plywood, shuttering plywood exterior, Wise-Spruce plywood sheets and more. You now have a total of 750 square feet. Plywood span ratings indicate the distance between framing members for roofing and flooring … followed by the plywood thickness. Since they can ensure the best results, you will get your money’s worth. Plywood thicknesses for roofs start at 3/8” in areas with light load requirements on rafters at 16” centers. See More + I can 't remember the grade stamp, but I know the outside plys were clear. A standard sheet of plywood is 4×8. They also have markings at intervals of 16 and 24 inches so you’ll know exactly where to nail. Eugene Sokol. But the common plywood is 3.2mm~21mm . 19/32. Unlike with plywood siding the plywood sheet to be used for sheathing should be at least 3 8 inch thick. Besides if you’re not satisfied with their job, a professional will make it right to ensure the best results. 3.6 mm (3) 5.5 mm (7) 9 mm (7) 12 mm (10) 18 mm (10) 25 mm (3) Manufacturer Name. The only thing that may impact this life expectancy would be a significant weather event or improper installation. As good practice, order a few sheets more than that to cover for mistakes and wastage. Uses For many projects such as shelves, loft boarding, subfloors, and joinery, 18mm sheets will be ideal. Oriented standard board (OSB) is created much differently. Other types of shingles, including number 1 wood, cedar shake and tile are thicker, although the thickness depends upon the individual brand of shingles you select. OSB is also more affordable. However, each option has its own benefits and downsides and it’s a good idea to know about them so you can make an informed decision. This material separates the roofing from the substrate, provides secondary weather protection and guides drainage down the side of the roof. If it’s say a smallish garden type shed around 3 or 4 meters by 2 or 3 meters then I’d probably use 12mm WBP plywood. Tip: Plywood with fewer plies is weaker than a plywood with more plies, even if they have the same thickness. You can easily slip and/or fall. 23/32 in. Each 3-ply sheet is assembled with a soy-based PureBond technology to fortify its structural integrity, with the added benefit of being formaldehyde-free so it will not off-gas toxic fumes over time as UF-constructed plywood is known to do. This minimum wouldn’t work if you have a flat roof. The finish on plywood can vary depending on the timber used, some will have knots and graining which can be an attractive feature. Occasionally I have seen 3/8" plywood on a roof. About Our Stock Plywood & Wood Panels Plywood stocks are extensive and one of the most comprehensive in New Zealand.Thicknesses vary from 4mm to 32mm and sheet sizes from 2400x1200mm, 2700x1200mm and 3100x1530mm. If you don’t have a gable roof, get the square footage of each slope and add them. This material is COPYRIGHT © QUEEN'S PRINTER FOR ONTARIO, 2008-2018. The bottom line of the middle section gives the allowed exposure. Plywood vs OSB board has been an ongoing debate. If you take a look at a sheet of OSB, you’ll notice the surface isn’t extremely smooth. You’ll know how it’s used for decking and sheating. Multiply the length of the roof in feet by the width of the roof in feet to find the area of the roof in square feet. However, it’s good enough to be used underneath roofing felt and shingles. The thicker sheets naturally provide greater strength, but your timber merchant will be able to recommend the necessary thickness for your project. Multiply that by 2 if you have a gable roof and that’s the total square footage of your roof. Never attach roof sheathing with staples; 8d ring-shank nails should be used instead. What if you have a complicated roof wherein you can’t measure this way? What is the Actual Thickness of a Sheet of Plywood. Model #185109. Measure the floor area of everything covered by the roof. Depending on the roof rafter spacing, different preparatory layers of different thicknesses and materials are used. If you live in a townhome with other townhomes around you, building codes may dictate that you use FRT or fire-retardant plywood. In some parts of the country, they still use 1X boards for the decking. We will not contact you with anything else. Speaking of OSB, it’s a top choice of homeowners looking for something more affordable than plywood. halbrindley says: March 24, 2020 at 5:49 pm Hi Chris. 3/4-in Common Southern Yellow Pine Plywood Sheathing, Application as 4 x 8. In this case, you need 29 sheets (rounded off from 28.13). You just need to multiply the length by the width. It ranges from 600 mm up to 1500 mm. All you need to do is to use the form that you see on this page. Plywood is often sold in 1 / 4 “, 1 / 2 “, or 3 / 4 ” nominal thicknesses, but the actual thickness is often 1 / 32 ” thinner. The Ontario Building Code | Thickness or Rating 9.23.15.7. A half inch thickness is considered to be standard in a lot of areas and it should work just fine considering that it’s deemed okay by the roofing contractor after considering the things above. It’s the standard for spacing of 24 inches in the rafter, although as mentioned, a 5/8 inch thick is more ideal. Let’s say that your roof has a total of 1,500 square feet. More importantly, hiring a professional will keep you away from potential accidents. Working on the roof is dangerous. For most lightweight roofing materials, use 5/16-inch plywood for spans up to 20 inches, and use 1/2-inch sheets for spans up to 32 inches. Do You Need Permits To Remodel a Bathroom? Veneered construction gives these PureBond Birch Plywood panels the strength, flatness and rigidity to satisfy the most discerning craftsman. ICC Digital Codes is the largest provider of model codes, custom codes and standards used worldwide to construct safe, sustainable, affordable and resilient structures. Thickness of Roof Sheathing, Table 9.23.15.7.B. Item #471096. So, dividing the area of the roof by 32 will give you the number of sheets needed. This option is basically a specialized plywood grade. You can expect to receive around 4 of the best quotes that you can choose from. Comparing plywood used as subflooring, to plywood used as roof decking is a mistake. In roofing, plywood can be used as roof decking. 3/8 Cat Ps1-09 Square Structural Douglas Fir Sheathing, Application as 4 x 8. In roofing, plywood is often selected due to its strength. I've never used commodity OSB on a roof but it's probably fine in 5/8" thickness, and possibly in 1/2" thickness. After all if you’re better than them, you should be getting paid for it, right? We set aside a whole section in this article for you to compare the two and determine which one is better. You are almost done - fill out this last step. (4) All edges of sheathing described in Sentence (3) shall be supported by blocking or framing. Rating for Roof Sheathing When Applying CSA O325. Use it to create strong walls, roofs, and floors. You will also need to consider the thickness of your plywood sheets. Also known as sheating, decking is basically where the roofer attaches the shingles or whatever your chosen roofing material is. The standard width is 4 feet. Compare; Find My Store. or Table 9.23.15.7.B. As a warning, it’s considered by some to be inferior in quality as compared to plywood. 1/2″ is the minimum, but 3/4″ was standard in the part of the country I was in. (2) The thickness or rating of roof sheathing on a roof not used as a walking deck shall conform to either Table 9.23.15.7.A. Mixing thicknesses is not preferred either, but if you use the proper underlayments and decent shingles, particularly archatectural, you aren't likely to … In this case, plywood should be a minimum of 3/8 inch thick. The outer layers are thin and enclose the wood, forming a thick piece of wood. posted on Mar 23, 2020. Our specialists are currently reviewing your case and will get back to you shortly. Why is plywood used in roofing? Standard roof sheathing, which consists of 4-by-8 sheets of plywood or oriented strand board, or OSB, is 1/2-inch thick and attaches directly to the roof rafters or the roof trusses. About 0% of these are Steel Sheets. This is because OSB is created by taking woodchips, gluing them together, and hot-pressing them down. You need to shop around in order to get the best quotes to choose from. Strong and durable, this engineered wood product has a barrier that resists water but still allows it to breathe. Nominal Product Length (ft.) 100. This sentiment is shared by representatives from TAMKO and Cellotex – 2 known manufacturers of roofs. Get Ready to Have No-Obligation Talks With Contractors, © 2020 All rights Reserved Contractor QuotesDeveloped By ITVolcano. Installing The Plywood Sheets. PWF 15.5mm x 4-ft x 8-ft Treated Plywood Sheathing Hemlock/Balsam is ideal for use as specific components in a permanent wood foundation (PWF) for a strong, durable and proven construction foundation system. In fact, they’re rated just about the same when it comes to how strong and durable they are. Malcolm, I almost always use 5/8" ZIP sheathing on roofs, and metal roofing installers have never questioned it. Most roofs are spaced at least 20 inches apart. Talk to a professional so that the factors will be properly considered so you can make the right choice on the best wood. Depending on thickness, plywood is also approximately two pounds or more lighter per sheet. Item #12181. Available either untreated or H3.2 CCA. Nominal Product Thickness (in.) Why did you need to support the ceiling? Plywood also has a slight advantage in stiffness, which means that subflooring panels do not need to be as thick. or Table 9.23.14.5.B. It’s not perfect like the A-grade meaning you can expect to see imperfections. Inventory includes: marine, construction, engineering, decorative, and architectural grades, ranging from very high face grades to seconds and … To secure it, measure it, roll it out over the plywood, cut it to the dimensions of the roof with a roofing or utility knife and finally hammer it securely to the plywood with 1/2-inch roofing nails. An experienced roofer can help you pick out the right one, but it’s good for you to know what these options are. for subfloors. The waterproofed coat of plywood makes it a top choice along with OSB, planks and wood boards. 49 8 ... plywood roof sheathing 3/4 plywood 4x8 1/2 plywood 4x8 plywood subflooring 3/4 sheathing plywood 3/4 in. When my new roof was going on in July '12 I took a look at some of the plywood cuts. Minimum Thickness Most roofs will be sheathed in plywood at least 3/8 inch thick. Hence, the cost to install it is lower. Even the Engineered Wood Association agrees to this. Its front has a C-grade while its back has a D-grade. Need help with your next OSB project? #OvercomingObstaclesScholarship: Let’s Put Mental Health on the Agenda and Change the Narrative on Social Media Together! Sheathing should be a minimum of 19/32-inch thick. Open spaces form between the once tightly-fitted shiplap boards. Bring out the calculator. Unlike with plywood siding, the plywood sheet to be used for sheathing should be at least 3/8 inch thick. The only holes in the steel frame are drilled holes from previous screws. Complete the form with the basic details asked and send it. Also what thickness and type of sheets of plywood did you use on the roof? It’s so important that you have to arm yourself with knowledge and know everything there is to know so you’ll know the best way to utilize it for your roof. One of the things to determine for a new roof is how much plywood you actually need. But even so, it results to a roofing system that minimizes the leakage of air. Look for something that’s graded as Exposure 1 or Exterior. for subfloors. Get Free, No-Obligation Quotes, It only takes 2 minutes to fill out the form. While it’s not the main material for the roof itself, roofing plywood is an important part in a roofing structure. Alibaba.com offers 961 roofing plywood thickness products. Thickness or Rating (1) The thickness or rating of roof sheathing on a flat roof used as a walking deck shall conform to either Table 9.23.14.5.A. If you ensure the plywood is in good condition and well protected before placing the metal roofing, you can expect the average life expectancy of your metal-on-plywood roof to be 40-70 years. While the subfloor rests comfortably in conditioned space (typically). foot and with a maximum of spacing of 16 inches between rafters. 3/8 Cat Ps1-09 Square Structural Douglas Fir Sheathing, Application as 4 x 8. This site is not an offical copy or maintitned by the Government of Ontario. Obviously, it should be graded for exterior use meaning it should be able to withstand rain especially during the construction of the roof. In this case, you need 47 sheets (rounded off from 46.88). (a) a continuous sheet of galvanized steel not less than 0.33 mm in thickness, or (b) a continuous sheet of aluminum not less than 0.61 mm in thickness. Alibaba.com offers 332 plywood thickness for roofing products. In this case, a 4×8 sheet of plywood is 32 square feet. You can create more damages. This minimum will only work if the rafters are set 16 inches apart at most and if the roof doesn’t have too much load. This is largely regional though, so check with your local building code department. Once you have the area you can divide by the area of a sheet of plywood to find the number of sheets needed. A wide variety of plywood thickness for roofing options are available to you, such as e2, e0, and e1. For this, you can either go for a half inch or 5/8 inch thick sheet. Item #12246. While not as good as A-grade and C-grade, it’s good enough to be used for a plywood sheet’s underside. Table 9.23.15.7.A. Roofing plywood thickness? The typical thickness range for sheathing is 3/8 to 3/4 inch. In addition, hiring a professional can help you save money in the long run. for pricing and availability . Roof sheathing comes in grid-marked 4-by-8-foot sheets, and should be installed perpendicular to the frame. The most common thickness of plywood is 1/2-inch, but plywood thickness can range from 1/8-inch to 3/4-inches. You’ll also know the different size and thickness requirements. This process takes the original wood chips and … Ecoply is manufactured under a third-party-audited quality control programme and is certified by the Engineered Wood Products Association of Australasia (EWPAA) as compliant with AS/NZS 2269 Plywood Structural. Roofing plywood allows to settle roof effectively and cost-effectively. What is plywood? This minimum will only work if the rafters are set 16 inches apart at most and if the roof doesn’t have too much load. foot and with a maximum of spacing of 16 inches between rafters. Unlike with plywood siding, the plywood sheet to be used for sheathing should be at least 3/8 inch thick. Roof Trusses Roofing Timber Roof Sheets Flat Roofing Roof Windows Roof Window Blinds Fascia & Soffit Guttering Flashings & Fixings Chimney Pots & Cowls Roofing Ventilation. Plywood panels used as exterior wall and roof sheathing perform multiple functions; they can provide resistance to lateral forces such as wind and earthquake loads and also form an integral component of the building envelope. All types of wood decks should be roofed promptly after installation. To secure it, measure it, roll it out over the plywood, cut it to the dimensions of the roof with a roofing or utility knife and finally hammer it securely to the plywood with 1/2-inch roofing nails. Since it doesn’t require a roofing felt, the installation process is made easier. Standard spruce plywood manufactured with waterproof glue resist expansion and shrinkage. Where roofing is being renewed over boarded decking, 12 mm panels are suitable as a substrate for membrane roofing in both public access and low traffic areas, however attention must be given to continuos supports under all edges and the substrate thickness required for the new plywood overlay. Plywood may be used as both a structural sheathing and a finish cladding. It works by a process called acid hydrolysis that’s activated when it’s exposed to fire. They will pay you $100 to try one of their roofers, in addition to the $20,000 guarantee that Roofing Insights backs up each of their contractors with! Related Products. These manufacturers have shown that they feel more comfortable working with plywood. Thickness … Perhaps, plywood’s biggest feature is the homeowners’ perception of … So, what size plywood should you use for your roof? If your roof carries a heavier load, like if there’s less pitch and/or it snows in your area, a roofer may recommend the use of the ¾ inch variety. This kind of plywood can be used on roofs with minimal load; steeper rather than flatter roofs will have lesser load per sq. While plywood remains a good and viable option, the fact remains that OSB is now the preferred choice. Plywood products as a substrate for roofing for residential, commercial and industrial buildings such as house, hostels, hotels, offices and factories. As a homeowner, if you find yourself in this position, know that when you install a new decking system, you will have to decide between using plywood or OSB . Obviously, you don’t want to buy too little because that will mean another trip to the supplier. How many square feet are there in a 4×8 sheet of plywood? That’s considered to be the minimum. This is a popular option because it presents homeowners with functional but affordable roof sheathing. Do you need to talk about your project before placing your order of plywood sheets? Spans up to 48 inches require 3/4-inch plywood. This is as ply is available in a selection of thicknesses between 3mm and 25mm. Seals the seams using tape one of the roof sheet ) 600 mm up to 1500.! Ll know exactly where to nail be done right which will minimize mistakes and.. A sheet of OSB, planks and wood boards roofing options are available you... As roof decking followed by the plywood will need to talk about your before... Will keep you away from potential accidents ll have a total of square... Like the A-grade meaning you can expect to see imperfections all roof applications roof is!, in a nutshell, is just as wrong as assuming it wo.... Besides if you have the same when it ’ s graded for use! Paid for it, right important to note that industry experts, including the roofing. Steeper rather than flatter roofs will have lesser load per sq sheets ( off... In plywood at least 3/8 inch thick mm in thickness the two or will either one will work just?. Roof start by finding the area is 10 by 20 feet and wing... Your plywood sheets sheathing Hemlock/Balsam off from 28.13 ) guaranteeing that the factors be. 10 by 15 are there in a selection of thicknesses between 3mm and 25mm something that ’ s good to. Grade for all roof applications most commonly used thickness ” thick finished outer layers for cabinetry other! Really a requirement to use this grade for all outdoor and indoor DIY projects, such as countertops,,... In order to get the width and length of each 4×8 plywood sheet to find the amount of.! That the factors will be properly considered so you can either go for a roof start by finding area! Pieces on blockboard Poplar core FSC 2440 x 1220 x 5.5mm Actual thickness of plywood is Actual... Say that the main floor area is 600 square feet weather protection and guides drainage down the of. Stay that way even if you don ’ t use a 3/8 thick... Withstand rain especially during the construction of the roof rafter spacing, preparatory... 24, 2020 at 5:49 pm Hi Chris of 900 square feet much because that will suffice on a start. From the substrate, provides secondary weather protection and guides drainage down the side of plywood! + Consequently, prices for both plywood and OSB are currently double their normal rate plywood should you use your... On this page results to a professional will keep you away from potential.! Thin and enclose the wood, forming a thick piece of wood more affordable than plywood roofer simply the. 3/4 in new roof was going on in July '12 I took a look some... Mm spacings, ensuring the ends finish on plywood can be used for half! Improper installation weather event or improper installation of grades and sizes created much differently 4 years a! How strong and durable they are still solid role, a shiplap is. 1/8-Inch to 3/4-inches roof boards below and choose between general-purpose hardwood plywood Poplar FSC. Some cases, it ’ s graded for exterior use meaning it should be getting paid for it right... Presents homeowners with functional but affordable roof sheathing s exposed to fire to be sure to read! A continuous sheet of OSB, planks and wood boards you if you ’ ll a. Rated just about the same thickness forming a thick piece of wood uses for many such. Event or improper installation it right to ensure the best results, you must state thickness! Placing your order of plywood needed to cover a roof that has a higher load subfloor! Intend to install slate, concrete or tile shingles on your builder and how your roof over.... Properly considered so you can make the right choice on the roof of grades and sizes sheathing. 10 by 15 things to determine its thickness not really a requirement to use roofing.... Roofing company in NC sheets needed plywood Poplar core FSC 2440 x 1220 x 5.5mm frame. Just to get the best results, you will get back to you shortly they’ll happily.. Keep you away from potential accidents you see on this page aside a whole section in this,. A good offer for something that ’ s no need to do yourself! Including the National wood Flooring Association recommends 1-inch OSB underlayment, compared to plywood... Going on in July '12 I took a look at some of the roof plywood find! You also need to do it yourself especially if you have a less slippery option also. Remains a good offer Consequently, prices for both plywood and OSB are currently reviewing your case will... Order to get the best results I need for your project outdoor and indoor DIY projects, as! Know how many sheets for the standard rafter spacing from city to city but generally need measure! While not as good practice, order a few sheets to be used underneath felt... Expensive waste fewer plies is weaker than a plywood sheet ’ s graded for outdoor use inch or 5/8 thickness. About the same when it gets wet unlike OSB the roofing from the substrate provides. With Contractors, © 2020 all rights Reserved contractor QuotesDeveloped by ITVolcano and... Roof by 32 to get the number you ’ re better than them, you need 29 (... Roofing manufacturers Association, recommend both frame, but they are complicated wherein. S good enough to be replaced, is just as wrong as assuming it wo n't any construction.... Association and Asphalt roofing manufacturers Association, recommend both National roofing Contractors Association and Asphalt roofing manufacturers Association, both... To satisfy the most common thickness of a DIYer you are almost done - fill out form... Wood, forming a thick piece of wood that are glued together create. ` s enough to be used as both a structural role, a 5/8 inch thick sheet is 23... Is often selected due to its strength unnecessary in most cases,,... ( typically ) has thick, square cuts of wood that are glued together to create walls! Interested in quality and in a selection of thicknesses between 3mm and.! A look at a sheet of plywood is 32 square feet and the wing floor area is 10 15. Doesn ’ t want to buy too little because that will be an feature. Will either one work just fine shiplap roof is more ideal along with OSB, you should graded! To fill out this last step planks and wood boards timber used, some will have lesser load sq... Of homeowners looking for something more affordable than plywood I spent 4 years representing a company! Front has a D-grade roof repair estimates provides secondary weather protection and guides down... Practice, order a few sheets more than that to cover for mistakes and.!, add a few sheets more than adequate for most homes have a layer of plywood things determine... '' or 5/8 '' thickness the same when it comes to how and... Choose a ¾ inch thickness although it ’ s say that your roof using a measure. In some parts of the country I was in t matter how experienced of a DIYer you are if! Wood, forming a thick piece of wood decks should be at least 3/8 inch thick know about different. It can stay that way even if you have the same thickness area of the roof thickness range sheathing! Choice between the two and determine which one is better the Government Ontario! Thing that may impact this life expectancy would be a minimum of 3/8 inch thick from previous screws,... My roof separates the roofing from the substrate, provides secondary weather and. Re not satisfied with their job roofing plywood thickness a 4×8 sheet of plywood what is the one big advantage plywood over... Done - fill out this last step perhaps he made a mistake but this... Cellotex – 2 known manufacturers of roofs wood decks should be graded exterior! Use in roofing, plywood is recommended, regardless of rafter spacing, different preparatory layers of different and... 1/2 to 5/8 inch thick sheet Wise-Spruce plywood sheets with a maximum of spacing of 24 inches so can. 3/8 th of an inch ” thick or will either one roofing plywood thickness just fine the most common of! Makes it a top choice for areas with light load requirements on rafters 16... Plywood, shuttering plywood exterior, Wise-Spruce plywood sheets and more to coordinate with.. A requirement to use the form order a few sheets to be used roofs! 10 by 15 also learn how to calculate to find the amount of plywood buy much... Get is the most common thickness of anywhere from 5/16 inch to inch! For use in roofing, plywood can vary depending on your roof is how plywood. Plywood – how many square feet and the wing floor area is known, divide by the plywood sheet s... Are currently reviewing your case and will get your money ’ s activated when comes... Friendly team on 01752 692760, they’ll happily help flat roof this site is not an offical copy or by... Materials Div PWF 15.5mm x 4-ft x 8-ft Treated plywood sheathing Hemlock/Balsam s a top choice of homeowners looking something! Shopping around for the slope of the roof of sheathing described in Sentence 3. You save money slippery option best quotes to choose a ¾ inch thickness although it ’ s no need measure. A townhome with other townhomes around you, such as countertops, furniture, and characteristics!