30 Lb Felt Under Hardwood

Pack gaf quickstart 33 lin.
30 lb felt under hardwood. Felt paper comes in 15 pound and 30 pound options. The thicker 30 pound paper is too thick for most typical flooring. How to install felt underlayment for hardwood floors. Since 30 pound paper is quite a bit thicker you might want to use underneath upstairs flooring applications where the sounds of footsteps can be heard more frequently throughout the house.
Shaw installation guides call for the use of 15 lb. This hardwood felt paper is necessary to greatly reduce the chance of any moisture coming up through the subfloor and will help protect the new. Fill the low space compactly with the felt. Asphalt saturated felt paper to be used under solid hardwood flooring.
Asphalt felt paper is installed by rolling out on the subfloor before installing nail down products. Electrogalvanized steel roofing nails 5 lb. Cut the building paper to fit with a utility knife. Nail or staple installations solid hardwood flooring must be nailed or stapled to an approved subfloor.
Black felt paper is rolled out over the wood subfloor prior to installing the new floor. 30 pound roofing felt without adhesive strips utility knife. Any gaps or hollow spots in the felt can cause hardwood floor boards to sink slightly resulting in creaking noises when walked on. You may need to overlap many felt pieces to fill the space.
Position the cut felt pieces on top of the low spots to fill them. Peel and stick roofing starter shingle roll. While overlapping of underlayment on the 15 is often up for debate the 30 pound product will be too thick for this purpose and should be butted together. With a staple down or nail down installation over a wood subfloor using solid flooring or engineered flooring it is recommended that an underlayment of 15lb.
Laminate flooring today is usually sold as glueless floating floor systems which means the boards snap together like puzzle pieces and sit unattached to the house. The use of shaw underlayment under a solid hardwood floor is not recommended. There always seems to be a new product on the market to replace the old but asphalt felt is a time tested and dependable underlayment.