Wood Siding Over Tyvek

In fact many builders disagree on the effectiveness of house wraps altogether and while some builders will only install 15 pound asphalt saturated felt paper underneath exterior siding others swear by plastic fabric house wraps such as typar or tyvek.

Wood siding over tyvek.

Existing wood siding must be in good shape with no rot or mold and fastened tightly to the wall. Apply house wrap up the gables before installing exterior trim even if the attic is not conditioned. Or put at least one layer of grade d paper over the tyvek then the siding. Why isn t there any concern about water penetration into the house through the nail holes.

Or install a rain screen using say 1 2 x 1 1 2 ripped down 1 2 treated plywood installed at 12 centers. If the wood siding is beveled or lapped you. I want to replace the tar paper but i can t find it at homedepot or lowes. Then you riddle it with nail holes when you nail the siding in place.

Dupont tyvek weather barriers add considerable protection against leaky seams in foam board similar to the protection provided over wood sheathing. Vinyl siding must be installed against a flat surface. Foam board applied over flat substrates. I saw a new house with felt paper under the siding rather than tyvek.

The unique nonwoven fibe structure helps resist air infiltration and water intrusion to help prevent drafts and keep energy bills low. It s an accelerator with a slight cape cod grey tint. Primed wood all six sides. Foam boards alone even interlocking foam boards do not adequately stop air leakage due to wall movement from settling and thermal expansion and contraction.

Tyvek says you can use 4 staples per 9 feet of house wrap if you tape over them an apply the siding right away. So when you install wood siding over a tyvek house wrap you take care to flash and seal all penetrations from plumbing hvac and electrical connections to make sure no water can get in. Hardie says it s fine. It can be installed behind exterior claddings such as stucco stone veneer brick wood and fiber cement lap siding or metal panel systems.

But a cap stapler is better. Faq s acronym s terminology to tyvek or not to tyvek that is the question. I have several choices. Use tyvek over building felt under siding.

For finish we ve used cabot s bleaching oil with good results. Fasten with stainless steel ring shanks. Tyvek drainvent is a patent pending three dimensional honeycomb textured drainage mat with attached heavy duty filter fabric that creates a space for water drainage and air movement behind cladding. In areas with substantial exposure to wind driven rain tyvek drainwrap can enhance drainage behind claddings including.