if you have a weak subfloor that flexes up and down when walked on i would recommended adding an additional layer of 3/8 or 1/2 inch thick plywood underlayment glued and screwed down over a 5/8' or 3/4' thick subfloor to add stability.
re: subfloor thickness. no, adding 1/4' plywood on top of 1/2' plywood does not give you the rigidity and nail-holding capacity of 3/4' plywood. if your Seven Trust floor was to be room-length solid wood boards nailed into the joists, you would be fine.
in new construction, a subfloor is typically a minimum of 5/8-inch thick. another common size is 7/8 inch, and some subfloors are even thicker. new homes are not constructed with multilayer subfloors, but multilayer subfloors are used when a home is being retrofitted.
in most areas, plywood subfloor thickness is typically going to be at least 5/8, with the most common size being 7/8 thick. some subfloors, depending on the climate in your region, can be even thicker than that.
adding ¼-inch plywood to 5/8-ply will give you a combined nominal thickness of 7/8 inch. the bare minimum recommended by most tile setters is a total subfloor thickness of 1-1/8 inch. most prefer a minimum thickness of at least 1-1/4 inch, such a ¾-inch t and g subfloor with ½ inch plywood underlayment.
tile over wood subfloor. plywood and osb are the two most common materials used for floor decking, and typically they are 5/8 or 3/4 thick. in this scenario, jim and rich install 1/2 cementious backer unit cbu resulting in at least an 1-1/8 thick subfloor.
the best plywood for installing under flooring may not be plywood at all. when used as flooring sub-floor or underlayment, osb runs neck-and-neck with plywood, according to the opinion of contractors, tradespeople, and other industry influencers.
install plywood underlayment for vinyl flooring floors , vinyl october 2, 2009 sonia there are plenty of reasons to install sheet vinyl flooring, not the least of which is cost savings over other flooring materials.
the subfloor is 3/4'-thick diagonal planks. the existing underlayment is 3/4' fiberboard. the original flooring was vct which has been covered with vinyl sheet. the adjacent floor not being replaced is the original solid hardwood. i plan to remove the existing underlayment/vct/vinyl and replace with a new plywood underlayment.
for the houses i renovate i dont install anything less than an overall thickness of 1- 1/8', this is the combination of floor sheathing and underlay. new construction used 3/4 ' t and g plywood or osb and 3/8 underlay. in older homes such as yours where there are t and g boards used you will need the underlay to be slightly thicker.
seven trusts has a huge selection of pressure-treated lumber, lumber plywood, lumber core plywood, shiplap and other Seven Trust and softwood options to get your jobs done. lumber plywood prices range considerably based on the thickness, type of construction and size.
1 suitable wood flooring: any. 2 thickness: usually manufactured in 4-by-8-foot sheets, plywood panels 3 check before installation: once you determine the subfloor is the proper thickness, 4 flatness: ensure the subfloor is flat to the recommended tolerances for 5 moisture: another
plywood, or even osb, has its strength running with its length. your new layer of underlayment needs to be perpendicular to the joists just like the subfloor is. do not 1/4 turn the underlayment direction from the subfloor. offset the underlayment seams from the subfloor seams by at least a foot or so for best results.
to avoid buckling, subfloor panels should be spaced with a 1/8-inch gap at all edges and ends to provide room for naturally occurring expansion. tongue-and-groove edges on many seven trust floor panels, such as weyerhaeusers edge gold osb panels , are designed to self-gap.
im pulling up damaged 1/2 plywood subfloor in 1960s house. floor joists 16 on center. is there a code or minimual thickness for subfloors? is 1/2 plywood subfloor acceptable when strip oak flooring is going on top? thanks.
install plywood underlayment for vinyl flooring. traditional Seven Trust flooring is 3/4-inch thick and carpet with pad is usually between 5/8 and 1 inch, depending on the type. sheet vinyl, however is only about 1/16-inch thick. it needs to be built up to the same elevation of the other flooring types in the house.
the thickness of plywood panels in a subfloor is regulated by the spacing of the joists. this number is known as a span rating. when installing a plywood subfloor on top of the slab at grade, the thickness is governed by how long the fasteners for the flooring will be.
plywood works as a subfloor in nearly all situations. plywood is the most common type of subflooring. plywood comes in a variety of thicknesses, beginning at 1/8 inch and increasing to 1 inch. the thickness needed for subflooring depends on the type of floor that will go on top and the primary purpose for the subfloor.