How Much Does It Cost to Fix a Leak in a Flat Roof?
BERKELEY FLAT ROOF BLOG
How Much Does It Cost to Fix a Leak in a Flat Roof?
The honest answer: it depends on what’s actually wrong. Here’s how to think about it before you call anyone.
A single flashing repair might run a few hundred dollars. A membrane replaced across a large section of roof is a different conversation entirely. Anyone who gives you a number without seeing the roof is guessing — or worse, lowballing you to get in the door.
What actually moves the price: how localized the damage is, what material is already on the roof, whether the decking underneath is still sound, and how hard the roof is to access. A single-story garage roof in the flatlands and a steep Berkeley Hills lot are not the same job, even with identical damage.
- Extent of damage — one spot vs. multiple areas
- Existing material — EPDM, TPO, PVC, or modified bitumen
- Decking condition underneath the membrane
- Roof access and site conditions
Want a real number instead of a guess?