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-   -   Drip edge for top side of Shed style roof with metal roof? (http://www.diychatroom.com/f9/drip-edge-top-side-shed-style-roof-metal-roof-116328/)

organick 09-05-2011 06:22 PM

Drip edge for top side of Shed style roof with metal roof?
 
I am building a shed. its all framed. Shed style roof 2x6 rafters 24 oc. with 2x4 purlins spaced 24 o.c. over them. So my question is how to seal that top lip so water doesn't run down the underside of the roof. Is there a drip edge or flashing that attaches over the top of the roof and to the front facia (which isnt up )???

AllanJ 09-06-2011 07:26 AM

Yes. You use the same drip edge that would go on the lower (eave) edge of a regular roof. The vertical flap is wide enough to carry the water below the edge of the roof sheathing and top of the fascia board.

guest 09-06-2011 07:58 AM

If your rafters are 2x6 and your purlins are 2x4 you will need 1x8 (3/4" x7 1/2" actual size) fascia board which will set to the top of the purlins and the roofing drip edge goes over the fascia board at the top, otherwise the roof drip edge will not cover the 2x4 purlins you don't want a gap there at the bottom of the purlins that the drip edge won't cover which will let water run behind the fascia.

organick 09-06-2011 09:47 AM

Quote:

Originally Posted by guest (Post 722139)
If your rafters are 2x6 and your purlins are 2x4 you will need 1x8 (3/4" x7 1/2" actual size) fascia board which will set to the top of the purlins and the roofing drip edge goes over the fascia board at the top, otherwise the roof drip edge will not cover the 2x4 purlins you don't want a gap there at the bottom of the purlins that the drip edge won't cover which will let water run behind the fascia.

i know that.....i just need the actual drip edge metal that goes over the metal so there is no gap between metal and wood on top.... Allan a normal drip will cover the raised metal too? what about colors though?

Tom Struble 09-06-2011 09:53 AM

if your using a corrugated panel you need a closure strip that sits above the drip cap,if your using a standing seam panel the ends of the roofing are folded and locked into the drip edge

organick 09-06-2011 10:22 AM

Quote:

Originally Posted by Tom Struble (Post 722198)
if your using a corrugated panel you need a closure strip that sits above the drip cap,if your using a standing seam panel the ends of the roofing are folded and locked into the drip edge

corrugated panel..... closure strip between roof and purlins and the drip edge just on the facia??? or a drip edge over top with the strip closure between that and roof??? I never used metal on shed style roof before. thanks

AllanJ 09-06-2011 12:33 PM

Need to show a picture of what the roof sheathing looks like and how much of a gap needs to be covered. Is this a vent gap comparable to a ridge vent on a peaked roof?

organick 09-06-2011 12:43 PM

1 Attachment(s)
Quote:

Originally Posted by AllanJ (Post 722326)
Need to show a picture of what the roof sheathing looks like and how much of a gap needs to be covered. Is this a vent gap comparable to a ridge vent on a peaked roof?

not for venting at all I dont have a pic but this one attached is the basic style. has the overhang in front....mine has closed doors though. Its 2x4 purlins over the rafters and the panels will be screwed to that. I need something to stop the water from coming over that top edge and running down the underside of the roof.

kwikfishron 09-06-2011 01:20 PM

You just cap it with metal.

Tom Struble 09-06-2011 03:46 PM

yes like ron says,i was thinking something else:yes:

i would still use a closure under the cap on the downwards slope

AllanJ 09-06-2011 08:43 PM

YOu can get metal drip edge with a premade fold to fit over the front edge of the plywood roofing down enough that the water drops off the metal edge and does not end up on the underside of the plywood roofing.

In your picture there is someting folded over the front of the shed. The drip edge I mentioned is the same idea but it only needs about one inch folded over the front to cover the edge of the plywood roof panels.


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