Eliot Mason wrote:Matt:
The C intersection should be dry, and filling it up with silicone or other sealant violates a cardinal rule of roofing - ALWAYS let the water go. If some water finds its way through a nail hole or something and into that cavity and it can drain away - or vent away - then you can create real problems!
So ... why isn't the porch roof draining? Unless it is completely flat that water should go away, especially as water coming off the pitched roof has energy to help sweep any water off. I'd look at your gutters and any trim details on the roof edge.
John F Dean wrote:Let's go back to the original post. Why can't you change the pitch of the porch roof?
John F Dean wrote: you only need to add longer rafters over the present ones to increase the pitch of the roof