Flat Roof Maintenance: Modified Bitumen & Tar and Gravel.
Flat roofs leak at the edges and the openings — the spots where pipes come through, corners, canales (the drains that let water off the roof), and the metal at the roof-to-wall joint — long before the open middle of the roof gives out.

Overview
Flat roofs leak at the edges and openings — the spots where pipes come through, corners, canales (the drains that let water off the roof), and the metal at the roof-to-wall joint — long before the open middle of the roof gives out. Staying ahead of those spots is the cheapest way to add years to a modified-bitumen or tar-and-gravel roof.
Our finished flat (mod-bit / tar & gravel) roofs
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From a real inspection
Catching flat-roof wear before it becomes a leak.
On a flat roof, a maintenance visit is about getting ahead of the spots that fail first. Here, a scupper was quietly wearing down the roof below it.
What we found
- A scupper was dumping water straight onto the gravel roof below, and that constant runoff was steadily breaking down the membrane in that area.
- Left alone, that’s exactly the kind of spot that turns into a leak down the road.
How we fix it
- We clear the gravel back and apply a fibered silicone mastic topcoat over the worn zone, reinforcing the surface where the water lands.
- It’s targeted maintenance that protects the roof and buys years, without the cost of a full replacement. Our maintenance work is backed by a 3-year warranty.
What’s included
What every maintenance visit includes.
01
Clean and prep
We clean and prep the surface before any sealant goes down, so it bonds to a sound, ready base.
02
Seal all roof openings
We apply roofing cement (or the fibered silicone mastic upgrade — a tougher, longer-lasting sealant) to all the spots where pipes and vents come through, and we fully seal both inside and outside corners.
03
Canale and roof-drain sealing
The roof drains and canales (the openings that let water run off the roof) are sealed so this high-risk drainage point can't become a leak path.
04
Wall-joint seam sealing
The seams where the roof meets the wall are sealed and any bare or failed areas fully sealed over, closing the most common flat-roof leak point.
05
Continuous silicone coating along the wall
A continuous silicone coating over the entire roof-to-wall seal — top edge, face, and the corner where the roof meets the wall — sealing one of the most common leak points on a flat roof.
06
Gravel reset
Displaced gravel is reset at completion, leaving the roof surface tidy and the roof surface underneath properly protected.
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“Professional and proficient. We have now used Paramount a couple of times. They are quick to schedule the estimation, which comes with photos and a complete explanation of their findings.”
Upgrade options
Fibered silicone mastic
Fibered silicone mastic instead of standard asphalt cement — it won't dry out and crack in the sun the way cement does.
Warranty
- 3-year workmanship warranty.
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