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4 votes

Is it worthwhile to cover fiberglass insulation with Tyvek under a house?

Tyvek will not add any insulative value. Aside from helping keep the insulation in place and preventing it from falling down, it will act as a draft stop and might be worth your time to install it.
matt.'s user avatar
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2 votes

Is it worthwhile to cover fiberglass insulation with Tyvek under a house?

It may no longer be the case, or perhaps in this one, but Tyvek cannot handle long term UV exposure, and would figure that the underside of the home will at least get some exposure, even if it is ...
Jack's user avatar
  • 35.5k
1 vote

Installing House wrap and Siding

House wrap is not your main defense line against water intrusion or drafts. It is more like a secondary line of defense, in case any water goes past the siding, you have another layer there, directing ...
Cheery's user avatar
  • 5,940

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