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Delta Exterior Membrane

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Posted by: from Granton
7/13/2013 at 10:29:31 PM

I have been doing some reading up on the delta membrane we had installed last year since we had some leaking again this spring and discovered the contractor did not put it on high enough.

My question is do you need to seal the termination strip at the very top with tar or cement to prevent water or dirt from getting behind or do we leave it as it is with just concrete nails attaching it to allow air flow?

REPLIES (7)
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Date/Time7/14/2013 at 12:03:50 AM

You must seal it as water can run down the wall from drivin rain and leak into ur basement.

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Date/Time7/14/2013 at 12:36:17 AM

It must be sealed. If the membrane is not high enough, then some will have to be added and then both sealed.

Your contractor should not use a product they don't understand. They give us all a bad name.

Hope it works out for you.

James Fram

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Date/Time7/14/2013 at 7:00:47 AM

The previous responses are correct. The top of the membrane should be sealed. This is not necessarily the cause of your leak. We were called recently to look at a foundation leak. I will spare you the details, however it turned out to be a roof drainage problem.

Make sure that water drains away from your foundation. All eaves trough down spouts should have extensions on them to get water away from your foundation. If you have a sump pump, make sure that it is low enough to adequately draw down the water. Make sure that it discharges well away from your foundation.

If you cant diagnose the problem, call in a contractor while it is leaking. We routinely do this at no cost to the client. Make sure that you think that his diagnosis make sense before you spend any repair money. A leak that is not repaired can cause numerous serious problems over time.

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David from Chetco Homes in Fort Erie
Date/Time7/14/2013 at 7:54:29 AM

We all ways put a lap sealer along the top edge. Then seal it with a black sealer.

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Kelly in Granton
Date/Time7/14/2013 at 9:27:36 AM

The contractor that did it said the termination strip at top was enough.

What product do I use to seal it?

The membrane is now sitting at ground level since I had asked them to add an additional 12 inch strip at top of existing membrane to bring it up to ground level. The termination strip then is at the very top of the membrane.

Did I mention the contractor refuses to return my messages even though he said he offers a 5 year warranty. Boy the story changes once you actually have to phone him back and question why we had water again this year. Wish I could remove my recommendation I put on his website last year.

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Expert Handyman in Ottawa
Date/Time7/14/2013 at 9:28:58 AM

I agree with all the comments. We've found new with membranes installed leaking. Upon inspection we found cracks beginning well above the membrane and then passing behind the membrane going right to the basement floor. We've also found leaking where roofs meet with siding that end up behind the siding and in the basement. We use various methods to solve the mystery of where is the real leak coming from.

Find a BBB accredited Handyman who is experienced at this type of challenge.

Good luck

Norm R

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Date/Time7/15/2013 at 7:13:37 AM

Yes you do, plus, you should also get the back sprayed with tar.

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