Tyvek Under Wood 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.
Tyvek under wood siding. Yes dupont tyvek drainwrap can be used under cedar siding. This requires priming all surfaces including the back and ends before installing. I saw a new house with felt paper under the siding rather than tyvek. Dupont tyvek drainwrap is engineered with vertical grooves to promote outstanding bulk water drainage in wall systems by helping channel moisture safely to the outside.
It is recommended that the cedar siding be installed per manufacturer s guidelines and recommendations by wood siding associations such as the western red cedar lumber association. It is recommended that the cedar siding be installed per manufacturer s guidelines and recommendations by wood siding associations such as the western red cedar lumber association including priming all surfaces including the back and ends before installing. The wood that goes under residential siding exterior sheathing performs several functions. It is also much heavier than house wraps that are made from thin light weight plastic fabrics such as polyethylene tyvek and polypropylene typar.
The breathable structure allows moisture vapor to pass through to promote drying in wall systems helping prevent the formation of mold and mildew. Unwoven fabrics of which tyvek is in the category of cannot be torn by hand because there is no grain or woven pattern at which a tear can be started tyvek that has been compromised by the tannins that are in both the sheathing and the siding can easily be torn in half and usually has already been eaten away in spots. Come up with another detail to keep the siding off the tyvek. It also provides a.
Take the tyvek off and start over with a better detail i typically detail 1 polyiso w a weather resistive barrier over that and then a vented air gap w battens to hold off the siding 2. Whether it s keeping homes comfortable protecting workers from on the job hazards enabling a safe response to epidemics or countless other applications the unique attributes of dupont tyvek bring comfort protection and the gift of life to millions each day. It adds insulation waterproofing and structural support for the framing. Use tyvek over building felt under siding.
Certain types of siding consisting of large sheets or panels will perform this function eliminating the need for sheathing paper. Faq s acronym s terminology to tyvek or not to tyvek that is the question. Yes tyvek drainwrap can be used under cedar siding.