Asphalt Laminated Paper Underlayment

Building paper is a catchall term for single ply sheathing paper manufactured in various thicknesses.

Asphalt laminated paper underlayment.

You can buy laminate underlayment but if you have a bunch of old roofing felt it works just as well. Building paper between layers of flooring. Lsu 30 30 30 asphalt laminated underlayment is rated for moderate water vapor resistance. Blue shield grade 3030 is a high grade flexible semi permeable moisture barrier designed for tile and wood flooring underlayment.

Produced in 36 w x 167lf 500 sq. The paper comes in rolls typically 3 feet wide. Asphalt felt paper is installed by rolling out on the subfloor before installing nail down products. A semi permeable moisture vapor retarder for use under tile and hardwood floors.

Click for larger view. The floor trim around the edges holds it all down. High grade asphalt for outstanding barrier. 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.

Consisting of two layers of kraft paper laminated with asphalt aquabar b is a non reinforced 30 30 30 duplex type grade b paper. Consists of 30 lbs per ream of high melt point asphalt laminated between 2 sheets of bs 30 kraft paper. Easy to handle conform and cut.