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RGP 2018-09-10 03:25 PM

Foundation membrane seal broken by Fence post dig

I am having a fence being installed on my property today I noticed that in the hole closer to the foundation the black sealing membrane seem to have been broken by the contractors at the very bottom of the hole, I guess they did dig too close to the foundation.

Is this bad? Should I be looking at getting them to fix it? What should I do ?


BartBandy 2018-09-10 05:07 PM

The dimpled membrane protects and allows water to pass between it and the waterproofing. It's not the big deal. If they broke that, they probably also scraped off the waterproofing.

Yes, they need to inspect and fix. Problem is, they aren't the right people to do that.

Why are they putting a post so close to the home in the first place? Should never drill next to a foundation wall. This is what happens.

xdarrylx 2018-09-11 10:04 AM

Ugly scenario and I hope you don't have a fight on your hands but BartBandy is spot on.

OttawaG 2018-09-11 05:29 PM

Oh, I need to look at the whole that is next to my foundation as well. The distance between the two houses is so small that there seems to be no way to avoid digging too close to the foundation :(
This is scary....
By the way, how did you locate the broken black membrane, it looked all dark to me....I guess I need to use a flashlight, also I never looked at it closely, just noticed that there was a hole....

BartBandy 2018-09-12 10:49 AM

Attach the fence to the house.

Is the hole next to the basement, or the garage? If garage, not a big deal on the waterproofing, because that wall doesn't need to be waterproofed if the other side is backfilled as well.

Still, what's down there next to any foundation wall is weeping tile. If they damaged the weeping tile, that could mean even bigger problems.

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