Flat Porch Roof Repair & Replacement in Pittsburgh, PA
The flat roof over a front or back porch is one of the most common flat roofs in Pittsburgh, and one of the most patched. It meets the house at a long joint that needs proper flashing, it often has a second-floor window or door sitting right on top of it, and its front edge carries all the water to a gutter that is easy to forget. Decades of roll roofing and tar build up, the edge rots, and the ceiling of the porch starts to stain. A porch roof is a small job, but it has to be done right: tear-off, new decking where it is soft, slope to the gutter, flashing up the house wall and under the window sill, and a new EPDM or modified bitumen roof.
What's included
- Tear-off of old roll roofing and tar
- Rotted decking and fascia replaced
- Slope corrected toward the gutter
- Flashing up the house wall and under window sills
- New EPDM or modified bitumen roof
- Drip edge and gutter reset
- Downspout reconnected
- Porch ceiling leak traced first
- Photos before and after
Sound like your roof?
- A stain or sag in the porch ceiling
- Water dripping at the porch posts
- Soft, spongy edge or fascia
- Black tar patches along the house wall
- Water sitting on the porch roof after rain
Leaking right now? Protect the inside first
Move belongings away from the drip, shut off power to any wet light fixture, and stay off the roof in a storm or on ice. Then request service: an active leak can usually be dried in until the permanent repair.
Porch Roof Repair — FAQs
Most flat porch roofs run about $1,500–$4,500 for tear-off and a new roof, depending on size and how much decking is rotten. See the cost guide.
The joint between the porch roof and the house wall is the weak spot, especially under a window or door. The flashing there has to run up the wall and be covered.
If you use it as a deck, choose modified bitumen or add walkway protection; plain rubber isn't made for regular foot traffic.
Many porch roofs are one day, weather permitting, longer if the decking or fascia needs a lot of work.