Thinset Over Carpet Glue

Mapie ii and customblend.
Thinset over carpet glue. Do not dry scrap there is asbestos in the glue. Replacing carpet with tile can give your home an exciting new look. Tile adhesive is expected to hold the tile in place not just for years but for decades without fail. Whether wall or floor tile that tile needs to thoroughly stick to its base surface demands placed on tile adhesive are both extensive and steep.
But now that you have ripped up the old carpet you ve got a sticky situation. Should the tile get wet the mastic may soften negatively affecting the bond of the tile to the substrate. Don t worry it looks a lot worse than it is. Most cases the issues arise with cutback adhesive over concrete.
So i pulled up the old tile in my bedroom and it was installed over vinyl flooring. Xl brands triseal adhesive residue encapsulator triseal is a light colored high strength acrylic polymer compound formulated to isolate cutback and other types of old adhesive residues that would affect the bond of the new floor adhesive over concrete substrates. There are a number of thinsets out there that are designed to go over old cutback adhesive. Otherwise you do.
Prior to the installation of floor covering systems triseal will also seal floors in dusty conditions providing a clean. Param 5500 self leveling concrete can be used to resurface over carpet glue or cutback adhesive which is bonded extremely well to the substrate. The adhesive often called carpet mastic used under most glue down carpet is usually water soluble and tends to prevent thinset from properly adhering. You can also emboss it with ardex featherfin ish and then use your thinset of choice.
If the cutback adhesive is on a wood underlayment you may remove the underlayment or cover the cutback adhesive with a layer of plastic or felt paper not roofing felt then install new underlayment. You can t tile over old carpet glue but it s not hard to remove carpet adhesive before tiling. There are adhesive bonding issues when going over cutback adhesive as well. It cannot cure too fast.