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How To Install Subfloor Over Existing Subfloor Insulation

29.10.2019 
How To Install Subfloor Over Existing Subfloor Insulation Average ratng: 3,8/5 324 votes

Proper way to install double-layer of subfloor? The tile is very forgiving over a floor that has more. Help with vibration dampening in a sub floor? Pre-existing pipes or ductwork can also make subfloor insulation difficult to install. Insulating the subfloor itself will usually provide the most efficient insulating method, but either of these two problems can mandate that you actually insulate the crawlspace walls. Most often, fiberglass insulation is the material of choice.

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Richard Hollingsworth wrote: Hi folks. Thanks for reading this. I have a woodworking shop with a concrete floor that was not pored level.

I have to shim all my WW tools to get them to sit level. I want to build a wood floor over the concrete slab. Do I just put down 2x4s on edge and shim as needed, then install plywood over this??? Yes, the best way would be to replace the slab, but. If the slab is in good condition it could be covered by a new layer of leveled concrete. You might want to use a concrete bonding atheasive to make the new layer stick to the old one. And/or you might want to physically secre the layers together.

One way would be to use a power nailer (22 gun) to sink some 2.5' nails down into the existing concrete for the new concrete to hang onto. Drive the nails thru short 2x4 blocks and then split the blocks with a screw driver and discard leaving the nails exposed. Add new matting steel or rebar to the new layer. Be sure to use earplugs, I about lost my hearing using a power nailer once.

As far as a 2x4 and plywood floor, I would be concerned about a) moisture seeping up through the porous concrete and rotting the wood and b) bouncyness or springiness. Even if the concrete floor is dry today, if you enclose it it may get damp. You should probably lay down a plastic sheet on the concrete first to seal the moisture. I would also use treated lumber. If you use shims they could work come loose and you would have a mess. I would use 2x6s not 2x4s so they could be scribed and fit to the cement below without getting too flimsy. It will probably be harder than you think to get the floor to come out flat and level.

You might screw the plywood down rather than nail it to make it easier to fix it someday. Ted Ladd 07.02.00 0:00. You could look into a gypsum-based product. I found this product called Level-Right one while investigating radiant heat. 'Level-Right is a self-leveling, cementitious product designed for thin-capping concrete.' Don't forget to tell us what solution you choose and how it works out!

On Mon, 7 Feb 2000 20:44:08 GMT, Richard Hollingsworth wrote: Hi folks. Thanks for reading this.

I have a woodworking shop with a concrete floor that was not pored level. I have to shim all my WW tools to get them to sit level. I want to build a wood floor over the concrete slab. Do I just put down 2x4s on edge and shim as needed, then install plywood over this???

Whats the BEST way to install a new floor? (Please don't say rip up the concrete slab.) ThanksRichard H.

How To Install Subfloor Over Joists

Dr.@execpc.com 08.02.00 0:00. I guess I would treat it like a deck.

Start with a wall to wall vapor barrier underneath, then bolt treated wood 2 x 4s to the perimeter walls using a laser level (rented) to make sure it is level. Divide up the room into 8 foot widths and level 4x4s to serve as the other end of the 'deck', shimming them up to level. Then use joist hangers or just screw in 2 x 4s 12 inches on center. Now that a level line of wood is established, you can shim support the wood 2 x 4s from underneath with treated wood, toenail screwing it so it wont shift. At this point, styro or other insulation can be dropped into the spaces (depending on code) and then plywood screwed down.

How To Install Subfloor Over Existing Subfloor Insulation

I would screw it down so it can be picked up in case of flood or????? (maybe you want to run pipes for a bathroom or something). You can do the whole basement, or just one section at a time. Ingrid Richard Hollingsworth wrote: I have a woodworking shop with a concrete floor that was not pored level.

I have to shim all my WW tools to get them to sit level. I want to build a wood floor over the concrete slab. Do I just put down 2x4s on edge and shim as needed, then install plywood over this??? Whats the BEST way to install a new floor? (Please don't say rip up the concrete slab.) in the Frozen Tundra zone 5 sorta List Manager: Puregold Goldfish List for care of goldfish go to Solve the problem, dont waste energy finding who's to blame.