In older properties with wooden joists (suspended floors), we tend to strengthen the joists with new wood joists. Then cover the floorboards with sheets of hardboard running at right angles to the floorboards. It lasts very much longer than the foam stuff and that means your carpets will last much longer too. For subfloors that are prone to mold and rot, the leveling compound can be applied over a watertight moisture barrier sheet. The following steps are recommended for resurfacing cutback adhesives and carpet glues with a self leveling concrete, Param 5500: Before installing the self leveling concrete, the installation contractor should ensure that the sub-floor is properly prepared. Imperfections in your subfloor can lead to problems with your new carpet, like gaps or lumps or damage from moisture or odors. Only mix small portions since the compound cures very quickly, and trying to work with excess material will leave you with excess drying up in the bucket. This will give you an idea of how much work you’ve got cut out for you, and where it’s needed most. Few aspects of a home elicit as much anxiety as a floor that out of level. This quick-setting underlayment can be applied to 1.5 in. {"smallUrl":"https:\/\/www.wikihow.com\/images\/thumb\/4\/40\/Level-a-Floor-Step-1.jpg\/v4-460px-Level-a-Floor-Step-1.jpg","bigUrl":"\/images\/thumb\/4\/40\/Level-a-Floor-Step-1.jpg\/aid9459573-v4-728px-Level-a-Floor-Step-1.jpg","smallWidth":460,"smallHeight":345,"bigWidth":728,"bigHeight":546,"licensing":"