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Top-Rated Flat, foam, or single ply roofing installers and replacers in El Cajon - Updated Nov 2026

Avatar for Sequoia Roofing Inc
Sequoia Roofing Inc
4.7(
268
)
Flat, Foam, or Single Ply Roofing - Install or Replace

Serving El Cajon, CA and surrounding areas

Approved

Super Service Award Winner

In business since 2007

Free estimates

Warranties offered

"We had to call in Sequoia Roofing after a terrible experience with another roofing company. They actually came out on a weekend because our roof had been demo'd and we had no roof. They took a look at the project, provided us with options and completed the job quickly, efficiently and for a fair price. Communication with the team was easy and smooth! The staff who performed the work did an excellent job of cleaning up every day and were respectful and professional. Definitely recommend this company."
Full Tear Off
Full Roof + Solar
Torch Roof
Roof Replacement
Roof Replacement

+1

Response time2 days
Response rate100%
12 neighbors recently requested a quote
Avatar for Protect All Roof Inc
Protect All Roof Inc
4.9(
30
)
Flat, Foam, or Single Ply Roofing - Install or Replace

Serving El Cajon, CA and surrounding areas

Approved

In business since 2014

Free estimates

Emergency services offered

"After completing the work the company checked out the roof for me for any future damage. They got the job done but I thought it was pricy for two hours of work. They did good. It went fine, the price was just high."
Additional Photos
Additional Photos
Additional Photos
Additional Photos
Additional Photos

+22

4 neighbors recently requested a quote
Recommended by100%of homeowners
ADVANCED ROOFLEAK SOLUTIONS INC.
4.8(
21
)
Flat, Foam, or Single Ply Roofing - Install or Replace

Serving El Cajon, CA and surrounding areas

Approved

In business since 2013

Free estimates

Warranties offered

"Erik and his team were wonderful to work with… true professionals in every way. They installed gutters onto my two story house within a couple of hours. They left absolutely no mess and the gutters look stunning. The gutters are well made and match the house perfectly. Erik was great to work with. He was able to give me a quote right away, explained details and timelines, and answered every question I had. I will be recommending Erik and his team to everyone who needs work on their roof or gutters. Thank you Erik and ADVANCED ROOFLEAK SOLUTIONS for all your work!"
Roof Replacement Project
NEW TPO ROOF SYSTEM
NEW TPO ROOF SYSTEM
NEW TPO ROOF SYSTEM
NEW TPO ROOF SYSTEM

+4

105 neighbors recently requested a quote
Recommended by21%of homeowners
Avatar for The Roof Masters
The Roof Masters
4.6(
242
)
Flat, Foam, or Single Ply Roofing - Install or Replace

Serving El Cajon, CA and surrounding areas

Approved

In business since 2005

Free estimates

Emergency services offered

"I hired them to replace portions of plywood in a double-garage roof, some facia board and tear off and replace all the roll-on roofing. They also installed a couple of whirlybirds. The estimate was right on. The team showed up bright and early and completed the job in one day. I was impressed. They cleaned up afterwards and even used a big magnet to find hard to see nails that dropped on the ground around the building. My garage roof looks great. It doesn't leak. I'm happy."
Our Work
The Roof Masters Team
We Offer Virtual Estimates
Our Work
Our Customers

+118

Response time3 hrs
34 neighbors recently requested a quote
Recommended by91%of homeowners
Avatar for Exclusively Roofing Inc. , SD
Exclusively Roofing Inc. , SD
5.0(
6
)
Flat, Foam, or Single Ply Roofing - Install or Replace

Serving El Cajon, CA and surrounding areas

Approved

Free estimates

Warranties offered

Customers say: True professional

"Great experience. We had some lose tiles on our roof that needed to be reattached. Spoke with Kendall. He and his crew showed up on time. They were very professional. Solved the problem. No hassles. Highly recommend"
Additional Photos
Additional Photos
Additional Photos
Additional Photos
Response time1 day
Response rate100%
8 neighbors recently requested a quote
Avatar for Dennis Cook Roofing, Inc.
Dennis Cook Roofing, Inc.
3.9(
118
)
Flat, Foam, or Single Ply Roofing - Install or Replace

Serving El Cajon, CA and surrounding areas

Approved

In business since 1988

Free estimates

Warranties offered

"I worked with Brian Moody and Adam Cook in getting a new roof for my house, office, and shed, along with new gutters. Brian did a great job communicating with me, understanding my requirements, not upselling me on options I did not need, and coordinating everything, including checking in with me right before, during and after the project to answer any questions I had and to ensure I was happy. Adam's crew was fantastic, always arriving early and quietly waiting in their trucks until the start time so as not to disturb my neighbors and to start actually working right on time, as opposed to the typical 20 minute sipping coffee getting prepped routine. They even finished the job a day ahead of schedule as they worked at a consistent pace and efficiently all day long. The crew was very friendly and easy to speak with to coordinate moving of cars from driveway, etc. Pricing was very reasonable, especially in consideration of the work quality."
Dennis Cook Roofing Inc.
Dennis Cook Roofing Inc.
Dennis Cook Roofing Inc.
Dennis Cook Roofing Inc.
Dennis Cook Roofing Inc.

+1

Response time1 day
7 neighbors recently requested a quote
Recommended by91%of homeowners
Avatar for NewHaus Roofing and Construction - San Diego
NewHaus Roofing and Construction - San Diego
5.0(
18
)
Flat, Foam, or Single Ply Roofing - Install or Replace

Serving El Cajon, CA and surrounding areas

Approved

Super Service Award Winner

In business since 1995

Free estimates

Warranties offered

"Excellent Service and Repair! The gentleman doing the installation was very professional and seemed very knowledgeable. He was able to explain the difference in advantages/disadvantages of various roof materials. And the work was done before the next rain!"
Lemon Grove Project
Shingle Roof Job
Shingle Roof Job
Shingle Roof Job
Roof Replacement

+4

326 neighbors recently requested a quote
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FAQs for flat, foam, or single ply roofing installation and replacement projects in El Cajon, CA

Many roofing pros point to PVC as the top performer on flat roofs thanks to its tough seams and long-term waterproofing. A properly installed PVC membrane can last 30 years or more, resisting ponding water and harsh weather with ease. You will pay more up front than you would for EPDM, but the added durability often translates into fewer repairs and a lower cost per year of service.

Yes, a rubber roof is an environmentally friendly choice. Most rubber membranes contain recycled content and can reflect heat, which helps trim cooling bills in hot weather. Manufacturing has a lighter footprint than many traditional materials, and the long lifespan means fewer tear-offs headed to the landfill. If sustainability is a priority, ask your roofer about brands that carry third-party eco-certifications and confirm they meet local environmental standards.

The El Cajon, CA homeowners’ guide to flat, foam, or single ply roofing installations and replacements

From average costs to expert advice, get all the answers you need to get your job done.