27 posts / 0 new
Last post
phoenix87ta
Water-damaged exterior wall

So while remodeling a room, I've discovered that one of the exterior walls of my home has a hole in it that has apparently allowed water to get in and has rotted the plywood in the wall pretty badly. However, the damage is limited to the space between the corner and the first stud in the wall.

A neighbor has suggested simply filling the hole with spray insulation, cutting a new piece of plywood slightly larger than the damaged area, and securing it from the inside with liquid nails and coarse drywall screws. While it's appealing as a cheap fix, I don't think it's the best solution, but I'm not sure how to go about repairing it properly. Any suggestions? Pictures can be taken if they're helpful.

dj1
Re: Water-damaged exterior wall

photos will help.

phoenix87ta
Re: Water-damaged exterior wall

Seems I'm having a problem doing that. I can't add links to my posts yet, and attempting to lower the size and quality of the images sufficiently to allow them to upload here eliminates virtually all of the detail. Will have to see if I can come up with another way to deal with it.

A. Spruce
Re: Water-damaged exterior wall

Send a private message to JLMCDANIEL, he will post them for you.

A bandaid approach may be acceptable, however, keep in mind that if the water was leaking from the outside and you only see a small spot on the inside, there will likely be extensive rot on the other side of the panel that you can't see.

phoenix87ta
Re: Water-damaged exterior wall

Heh. Can't send private messages either, as my post count isn't high enough. Any other suggestions?

dj1
Re: Water-damaged exterior wall

Photobucket.com?

Others have used it and it worked.

phoenix87ta
Re: Water-damaged exterior wall

Already have the images hosted, but I don't have the post count to allow me to add links to my posts on this board. Need 10 posts before I'm able to do that, apparently.

imgur.com/a/ddRnh#0

phoenix87ta
Re: Water-damaged exterior wall

Ah, that did it. Okay, pictures are linked in my last post. Let me know if you need more pictures or questions answered, but I'd really love to know how to deal with this problem.

dj1
Re: Water-damaged exterior wall

I saw your pictures, and even though they are limited, I can tell that you have damage large enough to be ignored.

I also can tell you that your damage extends to the next studs, on the right and on the left, so you'll have to remove more drywall.

What the pictured don't show is the sill plate. I'm afraid it's damaged too.

You're looking at replacemen of damaged/rotted lumber, cleaning and reconstruction. Don't do what your neighbor suggests - it would be like filling a tooth cavity without cleaning out the decay.

If you need help here, hire a pro and do it right. Good luck.

A. Spruce
Re: Water-damaged exterior wall
dj1 wrote:

What the pictured don't show is the sill plate. I'm afraid it's damaged too.

It's there, it's just hard to see in the fuzzy picture. I also see damage to the floor. So the tally as I see it is:

1 - Damage plywood sheathing across at least 3 stud bays.
2 - Likely damaged studs.
3 - Damaged sill plate
4 - Damaged flooring
5 - Damaged sub-floor

With the damage we can see, I also suspect that the damage extends into areas we can't, such as:

6 - Damaged rim joist and/or floor joists below the subfloor
7 - Damaged siding
8 - Significantly more plywood sheathing damage than the 3 known stud bays due to water following the back of the siding and being trapped between the siding and the sheathing.

What is likely going to happen is that you will get bids for what is visible, with the stipulation that once the area is adequately opened up for further inspection, the total damage can be assessed and total repair cost provided.

Get at least three bids and choose the company you hire by how trustworthy you think they and the information they give you is, do not hire based solely on price.

phoenix87ta
Re: Water-damaged exterior wall

So I'm wanting to do as much of this on my own as possible, since contractors are expensive and I haven't gone contractor shopping before, so I don't yet know which ones in my area are trustworthy. That stud bay I opened up is in a corner, so there's no more wall to the right of it. That particular bay backs up to an exterior wall, so I should be able to just pull the siding off to get at it from the other side. However, the bays to the left have progressively less and less access from the outside. If I need to get at that plywood, what's the best way?

The flooring is relatively easy, and a fair bit of the staining there is actually from cat urine. I don't yet know how much moisture from either source has penetrated under the floor. Note that part of the room (about the width of that first stud bay) is hanging out over empty air, so there's nothing built underneath that chunk.

In looking at the sill plate, it actually appears to be fairly solid, but how would I go about repairing/replacing it if need be?

More detailed pictures can be taken as necessary.

Pages

TV Listings

Find TV listings for This Old House and Ask This Old House in your area.