This goes for all carpet over carpet projects the old carpet underneath can transfer mold dirt and other debris into your new carpet.
Glue carpet over carpet.
Use a straight piece of wood or hard plastic to press the carpet down into the glue.
From there unroll the strip and embed it in the glue and tack strips and smooth the carpet as you go.
First off the old carpet must be thoroughly cleaned.
Pull the carpet back into position and smooth it out until there are no wrinkles.
You don t want to trap excessive moisture under the carpet and allow it to cause mischief with the bond.
Also allow the adhesive to really tack up before you drop the carpet into the glue.
Use a trowel to apply a layer of glue to each of the outside corners.
When you reach the opposite end come back roll up the slight section defined by the roll in.
Pass a floor sander buffer with 12 grit paper over the epoxy to confirm it s solid.
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And if the existing carpet was glued down not tacked it can be a huge time saver to lay the new carpet over the old.
On the face of it installing new carpet over the old carpet does have some advantages.
Lift the edge of one piece of the carpet gently and squeeze a 1 8 inch bead of the sealer along the upper edge of the backing.
Carpet tiles can be laid over old carpet with a bit of effort.
The area covered by glue should be between 12 and 16 inches in length.
Both the multi purpose and the glue down carpet allow moisture to pass through relatively easy.
Seal the seam between two pieces of carpet using a seam sealer.
If you are on or below grade it s more critical to address possible moisture and alkalintiy issue with a carpet tile install than for glue down carpet.
1 unroll carpet and rough cut i.