Manufacturer-Approved Roofing Contractors

(and How to Find Them)

By Roof Online Staff • Last updated October 22, 2022

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Why Use a Manufacturer-Certified Roofing Contractor?

It can be difficult to find a reliable roofing contractor who does high-quality work. One thing to look into is whether the contractor has been certified by a major roofing manufacturer.

Contractors who feel confident in the high quality of their work will often go the extra mile and become manufacturer-certified.

How a Roofing Contractor Becomes Certified

The process for becoming certified normally includes applicator training programs run by the manufacturer’s technical department and a required minimum number of years of roofing experience.

In addition, the manufacturer’s technical representatives will inspect a certain number of actual roofs installed by the contractor to verify the quality of the workmanship.

Better Roof Warranties

In order for a new roof to be eligible for a top-tier warranty, most reputable roofing manufacturers will require that a certified roofing contractor does the work.

The thinking here is simple. If a manufacturer can be sure that a contractor is highly unlikely to mess up, then they can be confidant that generous warranty terms won’t end up costing them a lot of money. There simply won’t be any expensive repairs for them to have to cover under the warranty.

You can reason that if the roofing manufacturer trusts these contractors to perform the work to a high standard (so the manufacturer won’t end up losing money on warranty issues), then you can trust them, too.

(This is not always the case, and we are not endorsing any of the contractors you find through these links.)

Find Certified Roofers by Manufacturer

The following list provides links to the databases of approved contractors for the major roofing manufacturers. These databases are generally searchable by zip code, so you can find a contractor near you.

Certified Residential Roofing Contractors

Atlas Roofing Corporation

Products: Asphalt Shingles

Atlas Roofing Approved Contractor List

Building Products of Canada

Products: Asphalt Shingles

BP Canada Approved Contractor List


Products: Asphalt Shingles, Metal Roofing

CertainTeed Approved Contractor List


Products: Asphalt Shingles, Slate Roofing

GAF Approved Residential Contractor List

IKO Industries

Products: Asphalt Shingles

IKO Approved Contractor List

Malarkey Roofing Products

Products: Asphalt Shingles

Malarkey Approved Residential Contractor List

Owens Corning

Products: Asphalt Shingles

Owens Corning Approved Contractor List

TAMKO Building Products

Products: Asphalt Shingles, Steel Shingles

TAMKO Approved Contractor List

Certified Commercial Roofing Contractors:

Carlisle SynTec

Products: EPDM Roofing Systems, PVC Roofing Systems, TPO Roofing Systems

Carlisle SynTec Approved Contractor List


Products: Built-Up Roofing Systems, Modified Bitumen Roofing Systems, PVC Roofing Systems, TPO Roofing Systems

GAF Approved Commercial Contractor List

Holcim Elevate (Formerly Firestone Building Products)

Products: EPDM Roofing Systems, TPO Roofing Systems

Holcim Elevate (formerly Firestone) Approved Contractor List

Johns Manville

Products: Built-Up Roofing Systems, EPDM Roofing Systems, Modified Bitumen Roofing Systems, PVC Roofing Systems, TPO Roofing Systems

Johns Manville Approved Contractor List

Sika Sarnafil

Products: PVC Roofing Systems

Sika Sarnafil Approved Contractor List