Use Tyvek Over Building Felt Under Siding

Another problem with using asphalt saturated felt is that it is difficult to seal the seams unlike with plastic house wraps which can be sealed with specialized tapes that are bombproof.

Use tyvek over building felt under siding.

This product soon evolved into being made in rolls using felt then fiberglass now we are back to using paper albeit a. Tyvek and r wrap lost about 3 of the cedar extractive mix in 2 hours while felt again lost 30. Felt paper will absorb moisture to some degree and wick it through. We limited our tests to tyvek r wrap and felt since these were the winners of the first round of clean water tests.

One disadvantage is that they can be damaged by the extractives that leach out of wet cedar and redwood siding a problem shared to a lesser extent with asphalt felt. Tyvek has its advantages personally i prefer it to typar because it s more durable on site in my experience. Housewrap is light easy to work with and has good tear resistance. Who knows what tyvek typar or the random felt you get at a random supplier tomorrow will do over the next 100 years though.

Felt seemed unaffected by soap still loosing 30 of its water. It is also much heavier than house wraps that are made from thin light weight plastic fabrics such as polyethylene tyvek and polypropylene typar. Tyvek and r wrap lost about 10 of the soapy water column in 2 hours. Plastic housewrap is not advised for use under stucco because it reacts to the surfactants in cement plaster.

Felt is preferred by some but i ve seen a lot of felt that has crumbled into dust so i prefer other things. It s also acceptable to place one layer of grade d building paper or asphalt felt over a layer of tyvek. Use tyvek over building felt under siding june 1 2020amirul muncategorized this article discusses the use of roofing felt or 15 pound felt as a building house wrap or vapor barrier and the permeability moisture problems and indoor condensation problems that may occur. While some believe that the original product was made from cotton rags or felt the original was made generally from squares of paper way back in the 1800 s used during the gold rush period even on the prairies for shanties roofing.