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Flat Roof Repair: Modified Bitumen & Tar and Gravel.

On a flat roof, the leak is almost always at a pipe opening, a canale (a drain that lets water off the roof), a seam where the roof meets a wall, or a blister or crack in the open middle. We find it and seal it watertight.

Roofing work by Paramount Roofing in New Mexico

Overview

On a flat roof the leak is almost always at a pipe opening, a canale (a drain that lets water off the roof), a seam where the roof meets a wall, or a blister or crack in the open middle. We find it and seal it watertight.

Our finished flat (mod-bit / tar & gravel) roofs

See all in the gallery →
Commercial roofing work by Paramount Roofing in New Mexico
Commercial roofing work by Paramount Roofing in New Mexico
Commercial roofing work by Paramount Roofing in New Mexico

From a real inspection

Reading a flat roof for blisters.

On a gravel flat roof, the trouble spots are where the rock has washed away and the membrane underneath starts to blister.

What we found

  • There were several blistered areas where the gravel had moved off and the membrane had failed.
  • We could also feel blistering starting underfoot that hasn’t surfaced yet, so the inspection isn’t only about what you can see.

How we fix it

  • We repair the failed areas and reinforce the surface so water stops working its way in.
  • We’re honest that on an older roof some hidden blistering can show up later, and we tell you straight when a repair is buying time versus a long-term fix.
Flat roof inspection · ABQ metro
An actual Paramount Roofing roof inspection.

What’s included

How we find and fix the leak.


01

Seal roof openings

Pipe and vent openings are the most common entry point on a flat roof — we seal them watertight.


02

Repair canales / roof drains

Canales and roof drains (the openings that let water off the roof) are sealed where they meet the roof surface and the surrounding metal.


03

Seal wall-joint seams

Seams where the roof meets a wall that have opened or come apart in layers are resealed.


04

Seal over failed metal edging

Failed metal edging is fully sealed over rather than just patched.


05

Repair blisters and cracks

Blisters and cracks in the open middle of the roof surface are cut, dried, and sealed.


06

Repair bare spots

Areas where the surface has worn bare are repaired and sealed.


07

Leak-source diagnosis

Leak-source diagnosis and photo documentation, every time.

4.9200+ Google reviewsLicensed, bonded & insured · NM GS-21 #400113Owens Corning Preferred Contractor

Rated 5 out of 5 stars.
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.
Bee Gorman · Repeat customer

Upgrade options

Fibered silicone mastic

Upgrade from standard roofing cement to fibered silicone mastic (a tougher, longer-lasting sealant) — more flexible on a flat roof's openings, seams, and edges.

Warranty

  • A repair is priced to fix the one issue — nothing more.
  • Want it backed by a warranty? Pair the repair with full maintenance and we'll stand behind the work.

FAQ

Common questions.

Where do flat roofs usually leak?
Almost always at a pipe opening, a canale (a drain that lets water off the roof), a seam where the roof meets a wall, or a blister or crack — rarely out in the open middle of the roof surface itself.
Do you repair mod-bit and tar-and-gravel roofs you're not ready to replace?
Yes. We repair and maintain both modified-bitumen and tar-and-gravel roofs. When you are ready to replace, we replace them with TPO (a single flat, heat-welded roof surface).
What is fibered silicone mastic and why upgrade?
It's a longer-lasting, more flexible sealant than standard roofing cement — better suited to the movement and heat cycling a flat roof sees in New Mexico.

Roof leaking? We'll find it, fix it, and document it.