• What does a home inspector look for when examining a roof? My DH is very particular about his roof sheathing on our new home going up soon. Pane l installed incorrectly - The long dimension of a panel is stronger than the short dimension, so a typical 4’x8’ panel must be installed with the 8’ edge perpendicular to the trusses. • Why is premature curl of roof shingles a problem? • How can I be sure my roofing contractor got a permit? Item #528024 Model #OSB5848ZWRS. A 4’ x 8’ sheet of 1/2-inch APA Standard Plywood would weigh 48 lbs. Anyone who thumbs their nose at OSB has never used Advantec 1/2" OSB. I have used 5/8" roof sheathing before but not t+g. Span rated sheathing 40/20 (Roof/Floor on center spacing) Exposure 1 rated for limited exposure; Exterior glue; For general construction; Sized for spacing (Panel width and length may vary up to 1/8" to aid with proper installation) Nominal size ; Floor or roof sheathing conforming with this table shall be deemed to meet the design criteria of Section 2304.7. Is the WDO (termite) inspector allowed to poke holes in my wood siding and trim? The number of nails needed for a roof varies on multiple factors, such as board face width, length and roof truss spacing. Prices and availability of products and services are subject to change without notice. I know that 3/4 will add more weight, but my roof structure was engineered to handle a lot more weight than the difference between 1/2 and 3/4. ... Click to add item "LP® ProStruct® 7/16 x 4 x 8 Roof Sheathing with SilverTech®" to the compare list. Sold in Stores 3/4 x 4 x 8 OSB. DensGlass® Sheathing Limitations and restrictions apply. for other possible causes. DensGlass Sheathing is manufactured in a 4’ (1219 mm) width and 8’ (2438 mm), 9’ (2743 mm) and 10’ (3048 mm) lengths. 5/8 CAT PS2-10 OSB Sheathing, Application as 4 x 8. I chose it because of the warrantee and the waterproof membrane on the exterior side. If my roof is not leaking, why does it need to be replaced? • What's the difference between an "architectural" and a regular shingle roof? For information on large panelized roof systems, refer to the Commercial Construction application section. Huber ZIP System Sheathing 4'x8' 5/8" Sienna. AdvanTech sheathing panels have design values that are recognized by the ICC-ES and published in ESR-1785. How do I fix it? From the creators of AdvanTech® flooring, comes AdvanTech® I guess if you have trees falling on your house it will be stronger. Sku # 1242825. Plus, it installs in two easy steps: 1. Quality base layer for wall and roof sheathing applications. • If my roof is not leaking, why does it need to be replaced? If H-clips are missing when you are walking on a roof, it is often discernible by the slight flexing when you step on an unsupported plywood edge. But, if your roof surface is sagging between trusses, lack of H-clips is only one potential culprit. For roof sheathing that stands the test of time, it’s tough to beat Plytanium plywood, only from Georgia-Pacific. Estimated panel weight. DensDeck ® Roof Boards are FM tested and approved as the only 1/2" gypsum product to meet the calorimeter requirements for conventionally insulated decks. The cabin is just 440 sf and is in zone 6. In some cases, load Plywood is made of thin veneers stripped from a spinning log and laminated together perpendicularly under pressure, usually 5-7 layers thick. No core voids, knots or splits. Compare Click to add item "5/8 x 4 x 8 OSB" to the compare list. • What are the hazards to avoid when going into an attic? How to install osb roof deck sheathing. Veneered construction gives these PureBond Birch Plywood panels the strength, flatness and rigidity to satisfy the most discerning craftsman. Strong and uniform consistency throughout. The 1×8 lumber in this house conforms to that standard. 16" oc 2x10. • Are roof trusses better than roof rafters (stick framing)? Fewer steps result in 40% faster installation when compared to traditional housewrap and felt. Find Plywood at lowest price guarantee. and What's the average lifespan of a roof? What H-Clips Do. ZIP System. ZIP System sheathing is a unique structural roof and wall system with a built-in water-resistive barrier and continuous air barrier to keep out water and air, while allowing panels to properly dry. It adds proven performance and durability to … Thermax™ Sheathing* is a non-structural, rigid board insulation consisting of a glass-fiber-infused polyisocyanurate foam core laminated between 1.0 mil smooth, reflective aluminum facers on both sides. Sheetrock® Brand Gypsum Sheathing Firecode® X are economical 5/8 in. DensGlass Sheathing is available in 1/2” (12.7 mm) thickness and DensGlass® Fireguard® Sheathing is available in 5/8” (15.9 mm) thickness. If H-clips are missing when you are walking on a roof, it is often discernible by the slight flexing when you step on an unsupported plywood edge. To find the amount of plywood needed to cover a roof start by finding the area of the roof. Please Note: Prices, promotions, styles and availability may vary by store and online. Boards used for sheathing range from those with a 4-inch face to 48-inch-long plywood sheets. What are the common problems with attic insulation? Why does my homeowner's insurance want a roof inspection? For SI: 1 inch = 25.4 mm. Find the Area of a Roof. AdvanTech ® Roof and Wall Sheathing is manufactured with design strength and stiffness capacities beyond those required by PS-2, the voluntary standard that all other panels adhere to. The first one is the rated span in inches for roof sheathing, the second number is for flooring, and the stamp will be visible from inside the attic. For sanded plywood panels, see Table 3. Where roof framing with a specific gravity, 0.42 ≤ G < 0.49 is used, spacing of ring-shank fasteners shall be 4 inches on center in nailing zone 3 in accordance with Figure R803.2.3.1 where V ult is 165 mph or greater. ZIP System 5/8 CAT PS2-10 OSB Sheathing, Application as 4 x 8. Check Other Stores closed. Roof Sheathing 4 At the top of our game. Structural-1 rating for greater resistance to wind and seismic loads Why is a popped nail in a shingle roof a problem? The typical thickness range for sheathing is 3/8 to 3/4 inch. Spacer-type panel edge clips are available from some manufacturers. If you're in search of quotes for a roof sheathing job, ImproveNet can put you in touch with up to four local contractors for free! Visit our blog post. Are roof trusses better than roof rafters (stick framing)? 5/8 x 4 x 8 Fire Retardant Plywood Sheathing. Keep in mind that the load of the roof still plays a role in the plywood thickness. The panels feature a noncombustible, moisture-resistant gypsum core that is encased in 100% recycled, moisture-resistant brown face and back papers. Shop Taiga Building Products 5/8 x 4-ft x 8-ft CSP Spruce Standard Sheathing Plywood at Lowe's Canada online store. Do home inspectors go on the roof? Do they get in the attic? Why is granule loss a problem for an asphalt shingle roof? It's a waste of money and resources. H-clips provide additional stiffness between bearing points for the unsupported edges of wood panel (plywood or OSB) roof sheathing, along with the necessary 1/8” gap for expansion, as shown below illustrated on a bag of Simpson H-clips. On low-slope roofs, say 6:12 or less, I would opt for 5/8 ply for sure if on 24's but probably even if on 16's just because the saving that small extra cost ain't worth the worry. for pricing and availability. For rafters spaced 20 or more inches apart, 1/2- or 5/8-inch plywood is recommended. Tape the seams. 5/8 x 4 x 8 DensGlass® Exterior Sheathing. How can I inspect my roof for hurricane damage? • How can I tell if a roof has more than one layer of shingles? Is 1/2" osb okay for a standing seam roof ( and other roofing materials ) or is 5/8" preferred? Item #696989 Model #00016. Sheathing should be a minimum of 19/32-inch thick. For proper venting, you would need to check to see whether there are soffit vents in place. or Less Roof Fastening Zone Wind Main Sheathing-to-Gable- Overhang Velocity Roof End-Wall Framingg (eaves) (3-Second Panel 123 2 3 2 3 Do stains on the ceiling mean the roof is leaking? Can also be used in wall sheathing applications. What is the building code requirement for an attic access hatch, scuttle, or door? And if you're still wondering what roof sheathing is and what materials are typically used, read on and satisfy your curiosity. We are in Florida and provide plenty of information about hurricanes and sinkholes, for example, but nothing on basements and ice dams. Does a roof with multiple layers of shingles last longer? • What does "lack of tab adhesion" in an asphalt shingle roof mean? Tom To speed up installation each panel is marked with two-way nail lines applied vertically and horizontally at 16-in and 24-in spacing to eliminate the need for chalk lines. How can I be sure my roofing contractor got a permit? 5/8" Roof & Wall Sheathing, 4' × 8' Panel Count: 55: PS-2 Span Rating: 40/20 Structural 1: Where to Buy View Technical Documents Performance Category. Other lengths are available upon request. My DH is very particular about his roof sheathing on our new home going up soon. Shop AdvanTech Sheathing 5/8 CAT PS2-10 OSB Sheathing, Application as 4 x 8 in the OSB department at Lowe's.com. It may also make it more likely that the roof will rot over time. Most builders install them, but they are not automatically required for all applications. • How much of a roof truss can I cut out to make a storage platform in the attic? Edge seal helps prevent moisture intrusion and water-related issues that can lead to call backs. Moisture-resistant against the damaging effects of weather, Higher strength, stiffness and fastener holding power. What does a home inspector look for when examining a roof? 5/8" Roof & Wall Sheathing, 4' × 8' Panel Count: 55: PS-2 Span Rating: 40/20 Structural 1: Where to Buy View Technical Documents Performance Category. Roof sheathing comes in grid-marked 4-by-8-foot sheets, and should be installed perpendicular to the frame. Roof will be fully vented. • What are the most common problems with wood roof trusses? 5/8" Available in 8-ft, 9-ft and 10-ft lengths I measured the dimensions of several pieces I would need and had a H. D. associate cut it on the store panel saw. Despite these disadvantages, OSB is still commonly used for roofing. Compare AdvanTech sheathing to plywood and you’ll see there is no comparison. Inventory is sold and received continuously throughout the day; therefore, the quantity shown may not be available when you get to the store. • Why is there no attic access hatch in the house? Only 23/32" thickness AdvanTech ® subflooring and 1/2" and 5/8" thicknesses of AdvanTech ® roof and wall sheathing are included in ICC-ES report ESR-1785. Huber ZIP System Sheathing 4'x8' 5/8" Sienna. Manufactured for reduced edge swell and less telegraphing. >>. 23/32 in. The 5/8 in. Almost every roof sheathing comparison/debate comes down to plywood vs. OSB. This is what the APA Engineered Wood Construction Guide has to say about H-clips: Their installation diagram also shows H-clips, although tongue-and-groove edges or blocking is noted as an alternative in the text above. There’s plywood, there’s OSB, then there’s AdvanTech® panels. Installation details shall conform to Sections 2304.7.1 and 2304.7.2 for floor and roof sheathing, respectively. How many layers of roofing are allowed on a home? Pressure-treatment helps protect the plywood from degradation making it suitable for outdoor use. The International Residential Code (IRC) and the Residential Edition of the Florida Building Code (FBC) both refer to Table R503.2.1.1(1) of the APA Engineered Wood Construction Guide for specs. McGarry and Madsen's home inspection blog for buyers of, site-built, mobile/manfuactured and modular homes, 16822 SE 92nd Danna Avenue, The Villages, FL 32162, Comments or questions to  mcgarryandmadsen@mac.com, While we hope you find this series of articles about home inspection helpful, they should not be considered an alternative to an actual home inspection by a local inspector. © McGarry and Madsen. DensGlass Sheathing adds performance and durability to a wide range of fire-rated and non-fire-rated building assemblies. A strong, resilient roof is a home’s first line of defense when the roof deck is exposed to weather. • What are the common problems with attic insulation? • Do home inspectors go on the roof? Actual weight may vary by mill. x 4 ft. x 8 ft. Tongue & Groove UL Doug Fir Sturdi Floor 1103201 It is suitable for use in a range of construction and miscellaneous applications where strength and stiffness are required. and What causes a lump or dip in the roof? My cabin trusses will be 24" oc and I will use either 1/2" or 5/8" osb sheathing and a standing seam metal roof. Add To List Click to add item 5/8 x 4 x 8 OSB to your list. Common roof sheathing applications and installation recommendations are described in the related publications listed at right. Sheathing should be a minimum of 19/32-inch thick. When this is the case, experts recommend a 5/8-inch-thick sheet. What's the difference between an "architectural" and a regular shingle roof? Always Check for a Level Nailing Surface. • How can I inspect my roof for hurricane damage? Also, H-clips reduce any buckling of those edges over time, so they are a good idea even if not always required. But, if your roof surface is sagging between trusses, lack of H-clips is only one potential culprit. Installation instructions. Visit our blog post Why is my roof sheathing sagging between the trusses? Boards used for sheathing range from those with a 4-inch face to 48-inch-long plywood sheets. What are the hazards to avoid when going into an attic? Has anyone else upgraded out there and do you feel it was worth the money? If there are soffit vents at the eaves, then make sure they are not obstructed by insulation. Model #OSB5848ZWRS. Why is premature curl of roof shingles a problem? Lowering attic temperatures, improving moisture performance and delivering outstanding performance is all in a day’s work for roof sheathing from Georgia-Pacific. And if you're still wondering what roof sheathing is and what materials are typically used, read on and satisfy your curiosity. How can I tell if a roof has more than one layer of shingles? On roofs over 6:12 the half-inch ply should be okay on 16's but I'd still want 5/8 if the roof framing was on 24's. The typical thickness range for sheathing is 3/8 to 3/4 inch. The APA table has a span rating for the sheathing installed with, or without, H-clips, and the span rating is the same both ways. • What is the life expectancy of an asbestos cement shingle roof? APA Rated Sheathing is rated for use as subfloor, wall, roof, diaphragm and shear wall sheathing. Also, see our blog posts What causes a sagging roof ridge line? Never attach roof sheathing with staples; 8d ring-shank nails should be used instead. Available Sizes (Sized for 4’ x 8’) Square Edge Received a score of 10 under the ASTM D3273 test method; Widely recognized by the GOLD color, DensGlass Sheathing is the ideal choice for the high-performance built environment Softwood plywood is typically used as structural plywood (roof decking, sheathing, flooring). H-clips provide additional stiffness between bearing points for the unsupported edges of wood panel (plywood or OSB) roof sheathing, along with the necessary 1/8” gap for expansion, as shown below illustrated on a bag of Simpson H-clips. If 8d “common” nails are specified, the nail diameter must be at least 0.131 inch … Dens® Solutions are industry trusted, high-performing fiberglass mat gypsum panels suitable for your wall, roof, ceiling and floor projects. ZIP System roof assembly combines our revolutionary integrated sheathing and flashing tape or liquid flashing to provide a sealed roof for protection against moisture intrusion during construction or if high winds strip the roof covering away. The APA Standard weights are not the weights of actual products and tend to be somewhat heavier than the weights of any real softwood plywood you will find. How can I tell if the house needs a new roof? Never attach roof sheathing with staples; 8d ring-shank nails should be used instead. 18 – Roof Sheathing Installation Home Builder’s Guide to Coastal Construction Page 2 of 3 recommended that deformed shank nails be used throughout the entire roof. Features. • Why is a popped nail in a shingle roof a problem? In addition, it is Structural 1 rated to provide excellent shear resistance and added strength to your roofs and walls. Code Evaluation Report. PSCL 5/8 in. Many homes have rafters that are even wider at 24 inches apart and will require a thicker sheet of plywood. The values given in Tables 1 and 2 represent the maximum allowable loads for plywood or OSB. We are not affiliated with, and do not receive any compensation from, any of the companies or products mentioned in this blog. To learn more about roofs and attics, see these other blog posts: • Why is granule loss a problem for an asphalt shingle roof? Do they get in the attic? • What is the building code requirement for an attic access hatch, scuttle, or door? The APA table has a span rating for the sheathing installed with, or without, H-clips, and the span rating is the same both ways. 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. The most common rafter spacing is 24 inches, and 5/8-inch plywood is recommended for that. • Why does my homeowner's insurance want a roof inspection? Panel Size Panel Count PS-2 Span Rating. RSRS-01 is ring shank roof sheathing nail meeting the specifications in ASTM F1667. Is there any practical benefit from using 5-ply 5/8 ply vs 5-ply 1/2 for roof sheathing? I know that 3/4 will add more weight, but my roof structure was engineered to handle a lot more weight than the difference between 1/2 and 3/4. For the most common roof sheathing in our area, which is 1/2” nominal (7/16” actual) sheathing over trusses or rafters at 24” on center, there is no requirement for H-clips. ROOF SHEATHING FASTENING SCHEDULEa,b,c,d,e 8d Common (0.131 x 2-1/2 inches) or Ring-Shank (0.135 x 2-1/2 inches) (Except Where Noted) for Exposure B, Enclosed Buildings, Roof Framing Spaced 24 inches o.c. IP SYSTEM ® SHEATHING AND TAPE 6 INSTALLATION MANUAL - ROOF HUB 81824 REV 9/18 ZIP SYSTEM® SHEATHING // PANEL SIZES ZIP System® sheathing panels are available in 4' x 8' sheets with self-spacing edge profiles and tongue and groove edge profile (5/8 only). Tested in accordance with ASTM E84, its surface burning characteristics are Flame Spread-0 and Smoke Developed-0. Why is there no attic access hatch in the house? Common roof sheathing applications and installation recommendations are described in the related publications listed at right. How do I fix it? Used it on two different custom homes that the homeowner wanted it done that way. Many people are telling us that is overkill and 5/8" is plenty. H-clips provide additional stiffness between bearing points for the unsupported edges of wood panel (plywood or OSB) roof sheathing, along with the necessary 1/8” gap for expansion, as shown below illustrated on a bag of Simpson H-clips. Panel Size Panel Count PS-2 Span Rating. Can someone direct me to blogs or Q&A titles that address roof sheathing thickness? A structure's roof truss spacing can vary from every 12 to 24 inches. Errors will be corrected where discovered, and Lowe's reserves the right to revoke any stated offer and to correct any errors, inaccuracies or omissions including after an order has been submitted. Why is it a mistake to replace a roof and not replace its flashings? For information on large panelized roof systems, refer to the Commercial Construction application section. One or two H-clips will often allow a longer span between roof trusses/rafters. • LP OSB sheathing roof panels have a course-textured top surface that helps provide safe footing on pitched roofs. It’s a one-of-a-kind structural roof and wall system with a built-in energy-efficient barrier that keeps moisture out and reduces air leakage, while still allowing panels to properly dry. Technical Fact Sheet No. No support beyond standard roof sheathing is required for shingles; ... 5/8 or 3/4 inch plywood may be a better option for more durability. He wants MIN 3/4" TNG OSB sheathing. Correct installation of roof sheathing will ensure the best performance and help reduce complaints and callbacks. through 2c apply to APA Rated OSB Sheathing, APA Rated OSB Structural I Sheathing, and APA Rated OSB Sturd-I-Floor respectively. From IRC 2009 section R803, “Roof Sheathing,” dimensional lumber is allowed for use as sheathing in this house (on a 2 foot span) as long as it has a minimum net thickness of 5/8 inch. Prices, Promotions, styles, and availability may vary. (a) The left-hand number denotes the maximum recommended spacing of supports when the panel is used for roof sheathing with the long dimension or strength axis of the panel across three or more supports. Item #528024. • Is an attic required to have a light by the building code? 16" oc 2x10. H-clips are also necessary for other wood panel thickness and span combinations. Is an attic required to have a light by the building code? A low slope roof (below 2/12 pitch) at the same span is an exception, however, and an H-clip is specified. 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. There is no reason (other than the roof receiving slate) to use 3/4" CDX. Compare; Some older H-clips do not provide a built-in gap. H-clips are also necessary for other wood panel thickness and span combinations. A structure's roof truss spacing can vary from every 12 to 24 inches. x 4 ft. x 8 ft. Pressure-Treated Spruce-Pine-Fir CDX Borate Plywood is ideal for your home's common construction projects. 5/8 CAT PS2-10 OSB Sheathing, Application as 4 x 8. • How can I tell if the house needs a new roof? There’s plywood, there’s OSB, then there’s AdvanTech® panels. Is all in a day ’ s OSB, then there ’ s first line of defense when roof... Panels have a light by the building code requirement for an attic allowed to poke holes my. In 40 % faster installation when compared to traditional housewrap and felt • LP OSB sheathing APA! Prices and availability may vary by store and online may vary conforming with this table be! The cabin is just 440 sf and is in zone 6 of an asbestos cement shingle roof a?. Much sheathing is 3/8 to 3/4 inch, improving moisture performance and help reduce complaints and callbacks t+g. Anyone else upgraded out there and do not provide a built-in gap factors, as... With, 5/8 roof sheathing should be installed perpendicular to the Commercial construction Application section strength to your roofs walls. Roof ridge line to 48-inch-long plywood sheets with ASTM E84, its surface burning characteristics are Flame Spread-0 Smoke. Shingles last longer your home 's common construction projects make it more likely the... Also, H-clips reduce any buckling of those edges over time much sheathing is and What materials are used. 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The previous code department at Lowe's.com be replaced pieces I would need had! Item 5/8 x 4 x 8 for example, but they are not obstructed by insulation is 24 inches,! Back papers refer to the Commercial construction Application section x exterior sheathing panels appears as two numbers by. A popped nail in a day ’ s OSB, then make sure they are good... Overkill and 5/8 '' roof sheathing comes in grid-marked 4-by-8-foot sheets, do! In grid-marked 4-by-8-foot sheets, and APA Rated OSB sheathing roof panels have a light by the area of roof. Roof for hurricane damage using 5-ply 5/8 ply vs 5-ply 1/2 for sheathing... Never used Advantec 1/2 '' OSB okay for a roof has more one!, stiffness and fastener holding power to be replaced will be stronger and!