Underlayment for Laminate Flooring

Q. What type of underlayment is required to install laminate flooring?

A. Laminate floors should always be installed over a moisture-proof membrane, such as polyethylene sheeting, and a cushioned foam underlayment. Some underlayment products are composed of foam with a waterproof backing, combing both in a single solution. In general, cover the subfloor with the polyethylene sheet, overlapping the joints by 2 in. and sealing the seams with duct tape. Then, lay the foam underlayment over the plastic sheet, butting the seams together and seaming with duct tape. (Avoid overlapping sheets of foam underlayment, because the double thickness will cause problems when you lay the boards.)

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Trex® Seal™ Sub-Ledger Tape
Trex® Seal™ Sub-Ledger Tape

Waterproofing the ledger board is a critical step in preventing moisture damage and ensuring the structural integrity of a deck over time. To fully protect this essential component, the makers of Trex® Seal™ Ledger Tape have introduced a new butyl tape engineered specifically for use beneath the ledger board. Measuring 22 inches wide, Trex® Seal™ […]