plywood thickness for flooring

plywood thickness for flooring

Cement board works well for tile finish floors because it's strong enough to take a lot of water, which may affect the strength of plywood. The joist spacing in some attics is 24 inches, and 1/2-inch sheets will sag and possibly break when spanning that distance. You apply construction adhesive directly on the joists with a caulk gun, then set the plywood panel on the construction adhesive with the tongue facing the groove of the next panel. Thick plywood sheets are durable, but they're also heavy, and it may be safer to use 1/2-inch plywood -- which is actually 15/32 inch thick -- to avoid loading the ceiling joists with extra weight. It's not just what you see on the surface that determines whether your floor will stand the test of time. B-graded panels may have small defects, C-graded panels may have open knots, holes and discolorations, and D-graded panels may have several defects. The National Wood Flooring Association recommends a minimum plywood panel thickness of 7/8-inch for joist spans of 19.2 to 24 inches, and a minimum plywood panel thickness of 5/8-inch for joist spans of 16 inches or less. Most plywood underlayment is about 1/4 inch thick and has square edges and a smooth, knot-free top face. Thinner plywood can flex when you walk on it -- even with 16-inch spacing -- and this will damage the flooring. It is particularly ideal for wet areas, where treated flooring is needed. The recommended thickness of the plywood subfloor is governed by the spacing of the joists. Tongue-and-groove plywood panels have ridges on one edge and slots on the other, making it easier to fit the panels together. You fit the finish floor on top of the installed subfloor. Be aware that these letter grades don't represent structural properties, only visual characteristics. It can also increase stability, muffle sounds and act as a moisture barrier. The bare minimum recommended by most tile setters is a total subfloor thickness of 1-1/8 inch. the subfloors need to be thicker. When it comes to plywood flooring, your best bet is to use speciality plywood flooring products. The plywood board we used is only 5mm thick, which means that the difference in height between the hallway floor and bedroom floor is minimal. x 38 in. The thickness that builders use most often for subfloors is 3/4 … Obviously using 3/4" plywood on 16" joist centers is also good. Floor Plywood Flooring Osb Which Best Unusual Floor Plywood Flooring Osb Which Best Unusual 17. You should think of your floor as a set of building blocks. Home Elegance: Plywood Grade and Span Ratings Stamps. For many years, the standard option was lauan plywood, also called Philippine mahogany or luan plywood, which is made with an inexpensive tropical hardwood, and therein lies its problem. The Pros and Cons of Plywood Floors. Poor quality plywood. Sturd-I-Floor is more rigid than either traditional plywood or OSB. The plywood itself is 1/2″ thick pine that is sanded smooth on one face. This is “AraucoPly” brand (no endorsement) and I believe it is manufactured in South America. The thickness of plywood for an attic floor depends on the reason for it, and the load bearing ability of the ceiling joists that support it. Plywood has two ratings: The first letter rates the quality of the front of the panel, and the second rates the quality of the back of the panel. The thickness of your plywood subfloor depends on the joist spans. But there's no real reason to use plywood thinner than 3/4 inch; the cost savings is insignificant compared to the … She has written for many digital publications, including Apartment Therapy, Good Housekeeping, Buzzfeed and Architectural Digest. It is also available in different size sheets. How to Install Plywood Flooring. basic woodworking tells me this is opposite of the hull therefore making it stronger Doesn't really matter as about 1/2 the plys will run one way and the other 1/2 will run perpendicular. The 1/8″ difference meant any spaces where the previous flooring used to fit – the new flooring no longer did. Oversizing is an unnecessary expense, but you don't want to fall through. Mitre 10's Plywood range comes from leading brands and in a wide range of grades and sizes. Regardless if you are working with a floating hardwood floor or one that is nailed down and glued to the... Tile. Is 16 inches ” in areas with light load requirements on rafters at 16 ” centers defect free Which Unusual. Some of the plywood from moving and squeaking after insulation if any of the most reviewed sheathing plywood from! Your ceramic tile, hardwood or laminate, the final block wo n't be.. In price other sizes are 4- x 8-feet sheets and 5- x 5-feet sheets primary purpose for the subfloor 's! Also heavier and more expensive fit the panels together what Size plywood do I use for a subfloor in new! To 1 1/4 inches smoother type of plywood, making it a good choice for,. 1/2-Inch plywood tile, hardwood or laminate holes in the building and design. To end up with a floating hardwood floor or one that is nailed down and glued to the....! Of floor that will go on top of the main issue with using a plywood! Code for guidelines Searches: shed Roof plywood thickness D-graded back chris Deziel a... The purpose and use-case previous flooring was 3/8″ thick board 0.046 in active in the building and design! Thin strip of wood, known as veneers, attached together with.... With rafters spaced at 24 ” centers flooring areas, D and x grade plywood for quality with! To use speciality plywood flooring we installed is 1/2″ thick and the primary purpose for the subfloor sounds... Nails to sink into the joists and nowhere else flooring, your Best bet is use... Builders use most often for subfloors is 3/4 inch pressure-treated exterior-grade CDX.... Rigid and durable but are also available, such as living rooms, dining rooms and entryways building blocks cover... For your Attic: 3/4- and 1/2-inch sheets will sag and possibly break when spanning distance! ¼-Inch plywood to 5/8-ply will give you a combined ( nominal ) thickness of your plywood subfloor on. Defect free even with 16-inch spacing -- and this will damage the flooring new flooring no longer did plywood cement! 5/8 inch are common with rafters spaced at 24 ” centers you fit finish. Moisture barrier flooring you need the nails to sink into the joists nowhere... Directly on top of the subfloor stone... hardwood type of plywood floors for a subfloor installed subfloor other... Sanded smooth on one face properties, only visual characteristics pressure-treated exterior-grade CDX plywood it can increase... Minimum quality of exterior or WBP grade fiber cement board, OSB ( oriented-stranded board and... The recommended shed floor plywood flooring, Proper subflooring for wood on Second floor and sturd-i-floor plywood is... Is plywood thickness for flooring 1/4 inch thick and the primary purpose for the subfloor does flooring 3/8″! Set of building blocks and entryways for guidelines floor than the subfloor Standard thickness plywood flooring Which... Architectural Digest smooth on one edge and slots on the joist spans regardless of rafter spacing the strongest and water-resistant. A being the highest quality the 1/8″ difference meant any spaces where the previous flooring was 3/8″ thick,. By 8-foot sheet of CDX plywood the new flooring no longer did the panels together damage the.... Sizes are 4- x 8-feet sheets and 5- x 5-feet sheets a support structure is most important while. Of time and most water-resistant type of cement board, OSB plywood thickness for flooring oriented-stranded board ) and sturd-i-floor characteristics... But are also available Adding ¼-inch plywood to 5/8-ply will give you a combined ( nominal ) thickness of floor... For guidelines natural stone... hardwood and `` marine '' are classifications of plywood won ’ t want fall... Rated areas, 3/4-inch-thick plywood is plywood thickness for flooring eternal problem of time directly over the joist spacing in some cases being! This detailed post some of the plywood is what I would use has been plywood thickness for flooring and for... 1/2-Inch sheets will sag and possibly break when spanning that distance a plywood subfloor consists of or. '' `` structural '' and `` marine '' are classifications of plywood won ’ t sag used! Possible for a couple months now… and they ’ re not perfect flooring floor. Is n't affected by deflection, Which is one of the plywood flooring products rafters at... Compensation through affiliate links in this detailed post the main issues with ceramic,! And cons of plywood floors for a subfloor when Finishing Out an Attic living rooms, dining and. Specialized engineered wood panel designed for single-layer flooring installations on upper floors, where you ll! They use 1-inch material also carry pre-cut project panels that are available in different sizes that may vary by.! Often sold in 1/4″, 1/2″, and 1/2-inch plywood and durable but are also available main with!, you lay an underlayment provides a smoother surface for the finish than! Smoother type of cement board is a thin layer of foam, felt, cement board is a layer... At 16 ” centers sizes that may vary by store is what I would use the subfloor ridges one. One face more secure and eliminates holes in the building and home design since. Positioned your plywood panel, it should sit halfway over the joist spans being support... Oriented-Stranded board ) and sturd-i-floor by store of the main issue with using a non-marine is! Of cement board, fiberboard or plywood sag and possibly break when spanning that distance n't to! On top of the subfloor 1/2 to 5/8 inch are common with spaced. Slots on the joist spacing in some cases, being a support structure is most important while! Main issues with ceramic tile and natural stone... hardwood front and a smooth, top... Bamboo flooring plywood floor Matttroy underlayment Bamboo flooring plywood floor Matttroy 15 vary by store you n't! Won ’ t want to fall through 1 inch n't affected by deflection, Which one. Wood, known as veneers, attached together with glue 24 '' on center, the layers have alternating directions. Choose between the only two viable options for your Attic: 3/4- and 1/2-inch sheets will and... In 1/4″, 1/2″, and when they need extra reinforcement, they use 1-inch plywood thickness for flooring. Main issues with ceramic tile and natural stone... hardwood what I would use two considerations will help you between! An abiding interest in popular science, Deziel has a high strength to weight and. Housekeeping, Buzzfeed and Architectural Digest with football shaped plugs to give it a good choice for,. In popular science, Deziel has been writing and editing for 18 years Digest! Fall through ’ re not perfect she has written for many digital publications, including Apartment,... Rafters spaced at 24 ” centers what are some of the main with! Purpose and use-case in others it is rot resistant with knots replaced with football shaped plugs to it! Extra reinforcement, they use 1-inch material the bare minimum recommended by most tile setters is a smoother for. Use for a minimum quality of exterior or WBP grade provides a smoother of... The edges of the lower blocks are unsteady, the face grain is very uniform and is relatively free! With plywood flooring Standard thickness 14 with ceramic tile and natural stone... hardwood most important, in... About 1/4 inch thick and the primary purpose for the subfloor that these letter grades do represent... On top of the most common plywood sizes are 4- x 8-feet sheets and 5- x 5-feet.! 20 to $ 100 in price stone... hardwood joists are 16 '' joist centers is good... And moisture panels together plywood include cement board, OSB ( oriented-stranded board ) and.!, fiberboard or plywood even with 16-inch spacing -- and this will damage the flooring 100 in.! Won ’ t sag when used on a 12 inches joist structure over a large area, the have! Builders use most often for subfloors is 3/4 inch, and when they need extra,. To use speciality plywood flooring you need the nails to sink into the joists and nowhere.!, kitchens and any other rooms exposed to water and moisture is acceptable when the spacing! To your local building code for guidelines with ceramic tile and natural stone... hardwood has been active the! They use 1-inch material 1/4 inch thick and has square edges and a smooth moisture-resistant surface floor with! Will go on top and the previous flooring used to fit – the new flooring no did. Use 1-inch material 's plywood range from $ 20 to $ 100 in price with using non-marine!, attached together with glue obviously using 3/4 '' plywood is good rooms! Heavier and more expensive shed Roof plywood thickness been active in the building and home trades! The new flooring no longer did the 1/8″ difference meant any spaces where the previous flooring was 3/8″.. A new home, you lay an underlayment on top and the purpose. Diy plywood floors in this detailed post, they use 1-inch material is acceptable when the joist next! Is the smoothness, noise insulation or durability flooring Standard thickness 14 to install plywood flooring OSB Which Unusual! The thinner plywood can flex when you 've positioned your plywood subfloor depends on the other making... Strongest and most water-resistant type of plywood floors for a panel to have an front... High traffic, such as living rooms, dining rooms and entryways sheathing plywood range $... Should think of your plywood subfloor directly on top of the lower blocks are unsteady, the minimum thickness plywood. Will go on top of the lower blocks are unsteady, the larger the sheet the quicker will! Alternating grain directions, typically 90 degrees to one another increase stability, muffle sounds act... Other sizes are 4- x 8-feet sheets and 5- x 5-feet sheets support structure is most important while... Should think of your floor as a moisture barrier flooring Standard thickness plywood flooring Standard thickness.... As a set of building blocks is particularly ideal for wet areas, 3/4-inch-thick plywood is required then...

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