30 Weight Felt Over Plywood Behind Wall Siding

Fasten the barrier with approved fasteners galvanized staples for my roofing felt.

30 weight felt over plywood behind wall siding. 30 roofing felt installed bottom to top over plywood as weather resistant barrier. The second strength of this system is that the air space behind the siding promotes rapid drying if any water does get past the siding. Felt a holdover from the old days when that what they actually weighed. Lumberyards often call these items 15 lb.

Felt has low permeance when dry but much higher permeance when it gets wet. Install pieces in the correct order and make cuts carefully so any moisture can travel downward at all points without slipping under the wrap. This 30 felt roof deck protection provides a this 30 felt roof deck protection provides a layer of protection between your shingles and roof deck. Carry felt around corners and up tight to windows and doors.

15 pound felt lost 30 of its water on average. Plastic wraps are non absorbent. Ft or unrated 30 lb. Check with your local building official for exact specifications in your area.

Material weight felt per ply 5 gravel 4 roll roofing 1 235 ib shingles and paper 2 5 2 15 ib and i 90 ib 1 7 3 15 ib and i 90 ib 2 2 3 ply ready roofing 1 3 ply felt and gravel 5 6 4 ply felt and gravel 6 built up roof 5 ply felt and gravel 6 5 concrete plank 6 5 insulrock 2 7 petrical 2 7 porex 2 7. The cssb recommends using an 18 wide strip of no 30 astm d226 type ll or astm d4869 type lv roofing felt laid over the top portion of the shakes and extending on to the sheathing. Per square 100 sq. Ft and at least one grade of number 30 felt which is heavier.

How to install felt before new siding. Should any water get past. It was especially noteworthy that the perforated wraps amowrap pinkwrap and barricade lost more than 80 of the. Felt which weighs 15 to 20 lbs.

Nevertheless builders can find two modern versions of this old standby at many lumberyards. The felt helps prevent wind driven rain from causing damage to your roof structure and home. If water gets on the wrong side of a felt wrapped wall the felt can absorb the water and over time allow drying to the outside of the structure. And all other products drained completely.

Install felt starting just under the rim joist. Number 15 felt which weighs between 7 and 14 lb. Felt paper also commonly referred to as tar paper is an underlayment material applied to bare walls before siding is installed. Felt labeled astm 15 meets specific standards and is the norm in many areas.

Felt or building paper must be applied to walls properly to be effective.