In basements and in homes with slab on grade foundations the subfloor may simply be a concrete slab.
Sub floor details.
It may be made of boards laid either at right angles or diagonally across joists.
Choosing the wrong subfloor for your needs or having one installed incorrectly can have disastrous consequences further down the road.
Or the subfloor may be made of plywood or other panel products that are laid perpendicular to the joists.
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The subfloor is the bottom most layer and it rests on the joists.
The subfloor must be free of moisture damage including rot and sponginess and must be securely fastened to the joists and squeak free don t lay tiles on a concrete slab with cracks that appear to be spreading or irregularities that prevent you from leveling it.
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Details catherine liewen november 30th 2007.
We will explain the details including the types functions etc.
Rather the reader is referred to the aisi standard for cold formed steel framing prescriptive method for one and two family dwellings aisi 2001 for guidance.
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Subflooring provides a base for finish flooring and also serves as a platform during construction.
69 chapter 4 floor construction woodframe floor systems and concrete slab on grade floors are discussed in this chapter.
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Particularly appropriate for reactive soil or sloped ground stump sub floors involve raising the house off the ground on stumps sunken into the earth.
We can usually find these four types of subfloor in the market.
5 8 inch or thicker plywood panels are fastened every 12 inches on center and every 6 inches along the border.
Plywood pine flakeboard and particleboard.
Sleeper screed system common over radiant heat this system has 2 by 4s spaced 12 inches apart.
Although cold formed steel framing for floor systems also is permitted by the irc it is not covered here.
If you have a concrete slab floor the slab may be considered the subfloor.
In this article we will mainly focus on the first two layers.
The subfloor is the foundation beneath finish flooring materials.
On wood frame floors the subflooring provides a continuous structural surface over the floor joists.
Zip system oriented strand board roof sheathing model 1012110 43 37 43 37.
Solid strip or plank can be laid directly over a sleeper.
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