What does flooring prep involve in an older home?
Prep decides how well a floor lasts. Under older Portland kitchens, we often find a subfloor that is uneven, soft or damp. Damp crawlspaces and old plumbing leaks are common causes. Before new flooring goes down, the subfloor should be dry, flat and solid. Soft spots are cut out and replaced, and low spots are leveled.
Tile needs an extra layer, called underlayment, that keeps the floor stiff and helps cracks from forming. Older vinyl flooring and the adhesive under it may contain asbestos in homes built before the 1980s, and old finishes may contain lead, so testing before sanding or tearing out is a smart precaution. Planning flooring together with cabinet installation matters too, since the order of work changes how the floor meets the cabinets.
