Nanewnanew
Member
Is wood siding supposed to have a waterproofing membrane under it? I removed some drywall and insulation on a 40 year old house and saw straight to daylight because the siding had a knot in it that had come out. Shouldn't there be a Tyvek like layer there? Is it best to remove this siding and replace it with the waterproof layer? Why would it have been built without it?
Thanks
Thanks