Weatherproofing a flat roof hatch


Old 11-01-12, 06:42 PM
Thread Starter
Join Date: Dec 2011
Location: USA
Posts: 13
Received 0 Votes on 0 Posts
Weatherproofing a flat roof hatch

The storm blew the roof hatch off of our flat roof. The hatch is just a sheet of plywood screwed to a rectangle of 2x4's that sits over a 2x4 lip on the roof. I built a replacement, but the EPDM rubber sheet on the old one was too small, causing rot, so I can't reuse it. I'm having trouble sourcing a 4'x6' sheet of rubber, so I was wondering, would it be enough to paint the hatch with some sort of roof coating like this one? It would be $15 instead of $50+ ordering rubber sheet online.

And yes, I will be adding latches.

Thanks for your help.
Sponsored Links
Old 11-01-12, 06:59 PM
Temporarily Suspended
Join Date: Jul 2008
Location: NY
Posts: 10,986
Received 0 Votes on 0 Posts
I don't know if I would trust that product. What about a membrane instead?
Old 11-01-12, 08:50 PM
BridgeMan45's Avatar
Join Date: Oct 2011
Location: USA
Posts: 3,196
Received 0 Votes on 0 Posts
I've used lots of Henry's 201 on our carport roof, and for the most part it works quite well. A trick to keep it from developing cracks is to broadcast roofing mineral (fine aggregate) over it while still wet--doing so makes it more stable in the hot sun, and less likely to debond. For a small hatch it should work just fine.

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off

Thread Tools
Search this Thread
Ask a Question
Question Title:
Your question will be posted in: