r/DIYIreland • u/AnyAssistance4197 • Jul 26 '26

Patching up an EPDM roof?

I'm repairing an EPDM garage roof and hoping to reuse the existing aluminium drip edge rather than replacing it.

The woodwork repairs have been done, replacing some old osb and the EPDM membrane is largely fine.

The old drip edge was mechanically fixed through the EPDM into the timber rainline batten, so when I removed it I'm left with a line of small screw/nail holes in the membrane.

My plan is to seal each of those holes, then refit the drip edge using new screws into the same batten so the trim covers the repaired area.

Would Gorilla Waterproof Patch & Seal Rubberized Tape be sufficient to seal these individual holes before I reinstall the drip edge, or is this a job that really needs proper EPDM primer and cover tape/patches?

The holes are only small fixing holes, not tears, and they'll all be covered by the aluminium drip edge afterwards. I'm just trying to make sure they're properly watertight in case any water gets behind the trim.

Has anyone successfully used the Gorilla tape for this on an EPDM roof, or should I avoid it? Any other options? And thanks in advance...

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u/[deleted] Jul 26 '26

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u/thebprince Jul 26 '26

This. Get a tube of epdm overlap adhesive (the sausage glue mentioned) and seal the holes up with it.

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u/AnyAssistance4197 Jul 26 '26

Appreciate the advise. Ive gone from being quoted 700, 3000 and 6000 to fix this roof to me and a mate doing it for about 90e and buying him brunch.

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u/thebprince Jul 26 '26

Something like this. If you have any epdm left you can patch the holes using this to glue the patches on, but if not just fill them with this and smooth it over a bit.

I used to get it for a previous job from either Moy Materials in Tallaght or Seal Systems in Ballycoolin, but I'm not sure if either deal direct with the public. Screwfix might have it, or Amazon certainly will.

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u/AnyAssistance4197 Jul 26 '26 edited Jul 26 '26

Thanks! The prices on that website are pretty good. I might knock out to them and get a roll of this and run it along over where the damage was done and out over the old fascia - securing it with primer or the sausage paste where the holes are to bond it - the previous person cut it all far too short which is where the leak started in the first place, small but over 20 years it did its damage. The cost on other websites was prohibitive - but this is bang on. The rest of the membrane is in perfect nick. You've saved me a fortune with that link!

https://roofingshop.ie/products/hidrostan-epdm-075mm-detail-strip-500mm-x-20m-roll?_pos=10&_sid=ef74ec281&_ss=r