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bunt1967
Old House Wall Insulation
bunt1967

Purchased 1905 house in KY that was in the process of renovation. Previous owner installed vinyl siding over lap siding. Inside the house where sheet rock was removed on outside wall, you can see the vinyl siding through the lap siding. Whats the best way to handle this? How do you insulate before installing the drywall?

ordjen
Re: Old House Wall Insulation
ordjen

You can literally see the back of the vinyl siding? Even in days gone buy, there would have been tar paper or rosin paper to stop the wind from whistling through unhindered.

Mastercarpentry
Re: Old House Wall Insulation
Mastercarpentry

Might be the Moonshine, I've a similar effect on some rural homes here ;)

You could get some help from stapling Tyvek tight to the outside in the stud bays before insulating, or spraying with closed-cell foam would work to do both jobs but it's costly. Doing the vinyl job properly by using Tyvek under it would have helped but that would have cut into the crew's drinking hour so....... :eek:

If you can get Tyvek under the siding quickly, finishing the inside first should be OK, but if the insulation gets wet during the interim you'll be re-doing it all. Now you can see why doing it right the first time matters, but them fellers a'sittin on yonder log passin' the jug around will probably never understand.

Phil

keith3267
Re: Old House Wall Insulation
keith3267

You don't have a problem. The vinyl siding will shed water like feathers shed water off a ducks back. The wall will have plenty of ventilation that it really needs. The only issue would be from using a pressure to clean the vinyl siding, don't do that. Hurricane force wind driven rain would be problematic also.

Just use faced fiberglass with the wings stapled to the edges of the studs and not the inside face as seen so often. Any gap should be at the exterior side of the stud bay so that it doesn't wick water from the outside.

While you have the stud bays open, I would spray the studs and lap siding with a sodium borate solution to stop rot, mold and insects (termites). Boracare and Timbor are two good brands to use.

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