The siding on my home is defective and is supposed to be replaced soon,
which provides the opportunity to add Tyvek® HomeWrap®. The
contractor says he is using a "green board" which adds just a little
"R" value, but not the Tyvek Wrap unless I order it as extra.
What is your opinion on adding the Tyvek Wrap too? I've heard that it
helps stop air leaks and thus keeps the house warmer in winter, cooler
in summer and reduces heating and air conditioning bills. Others have
said it makes a house too tight and can cause mold, and it costs too
much. Have you had any experience with this product?
Thanks for your advice.
at www.buildingscience.com search for vapor barriers.
you need to know climate and construction type amd more to put this
info on this very informative website to work for your house.
you will browse and find stuff like:
DuPontâ„¢ TyvekÂ®â€”the protective material with more than 30 years of
performance in millions of homes.
Wrapping a home or building in a weather-resistant barrier is not just
good sense, itâ€™s good building practice. Because it helps combat
water, moisture and air infiltration that are any structureâ€™s worst
enemies. Allowed to penetrate behind siding, wind-driven rain and
moisture can saturate walls, creating a breeding ground for mold,
mildew and wood rot. The properties of DuPontâ„¢ TyvekÂ® do not support
the growth of mold or mildew. Air infiltrating from outside can create
comfort-robbing cold or warm spots while increasing heating and cooling
DuPontâ„¢ TyvekÂ® acts like a windbreaker and wrapped over the
sheathing and under the exterior sidingâ€”cut out around windows and
doors and taped securely at the seamsâ€”resists air infiltration and
water intrusion and makes for a more comfortable, energy-efficient home
Whether youâ€™re building new, remodeling or re-siding, ask your
construction professional or your home improvement retailer for TyvekÂ®
HomeWrapÂ®, TyvekÂ® StuccoWrapÂ®, TyvekÂ® CommercialWrapÂ®, TyvekÂ®
DrainWrapâ„¢, TyvekÂ® ThermaWrapâ„¢, TyvekÂ® AtticWrapâ„¢, DuPontâ„¢
FlexWrapâ„¢, DuPontâ„¢ StraightFlashâ„¢, DuPontâ„¢ StraightFlashâ„¢ VF,
TyvekÂ® Tape, TyvekÂ® Wrap Caps, and other Miracles of Science in the
DuPontâ„¢ TyvekÂ® family of products."
and lots more at their website.
It does pretty much the same thing as tar-paper, only better.
I think it's too expensive too. I thought greenboard was
a sheetrock type product for wet locations like showers, but
apparently it's also this stuff:
which is a closed cell polystyrene foam.
Tightly fitted foamboard will do a good job of reducing
air and moisture movement through the walls by itself.
If he caulks the seams, that would pretty
much make housewrap irrelevent.
Unless, of course, you're in a place where code
requires housewrap even when it doesn't make
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