Hi, I hope this is not a dumb question, but…
I’m hoping this fall to build a deck with a screened porch attached to our house. I’m a pretty good framer but have never worked on something like this. I have looked all over but haven’t been able to find any information on how to go about attaching the overhead portion of the porch to the house so that it stays dry underneath. The porch roof will attach to the house slightly below the second story windows to a vertical exterior wall currently covered with vinyl siding.
I know that it doesn’t necessarily HAVE to be attached directly to the house framing, but in that case, how do you seal where the porch roof buts up against the wall of the house?
Or, if the porch is to be attached directly to the house framing, how do you seal around the points where the vinyl siding gets cut away?
All the books I have seen on porch building completely skip over this point, which to me is one of the more important points to cover–I want my porch to be dry! If there are internet or print resources out there that explain this, please point me to them!
Thanks for any advice,
Tom
Replies
"how do you seal where the porch roof buts up against the wall of the house?"
This is a roofing question and is somewhat dependent on type of roof and the roof covering.
Remove the vinyl siding where you will be attaching. Remove whatever else you require to make the attachment.
Flash with metal. If this is the top of a shed roof (long level horizontal line), then use a long piece of metal bent to the slope of the roof slipped behind the drainage plane of the wall and left on top of the roofing material.
If this is a gable roof then use step flashing under the shingles and behind the drainage plane.
What kind of roof? What roof covering?
Rich Beckman
Another day, another tool.