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About Ja-Mar Roofing & Sheet Metal - Austin
Ja-Mar Roofing & Sheet Metal - Austin provides roofing services in Austin, TX.
How to judge roofing work
A roof is the one system that protects every other part of a building, which is why the way a contractor inspects matters more than the brochure. A thorough look covers flashing, penetrations, valleys and decking — not just the field of shingles — because that is where water actually finds its way in.
Roof lifespan depends more on installation quality and attic ventilation than on the material alone. Poor ventilation cooks shingles from underneath, and incorrect nailing patterns void many manufacturer warranties. The useful questions to ask any roofer are about process and sequence, not only price.
| Material | Typical lifespan | Notes |
|---|---|---|
| Asphalt shingle | 15–30 years | Most common; ventilation strongly affects service life |
| Metal | 40–70 years | Standing seam generally outlasts exposed-fastener panels |
| Clay or concrete tile | 50–100 years | Underlayment usually needs renewal sooner than the tile |
| Slate | 75–150 years | Weight requires adequate framing capacity |
| Single-ply membrane (flat) | 20–30 years | Seams and terminations are the usual failure points |
What customers say
Absolutely 5-star service! We went with Ja-Mar for a metal roof on our 40-year old house. We chose them based on great ratings, a competitive quote, and great customer service starting with the first engagement when we got the quote. I have lots to say but I'll try to keep this brief. When Ja-Mar came out to do the job, there was a pronounced bump in the existing roof that needed to be remedied before the new metal roof could go down; otherwise it would look awful. When the crew showed up and started removing the old shingle roof, it became apparent that lots of decking would need to be removed to access the rafters underneath in order to level things out and make it right. At this point the crew was there and underway, and I had to make a snap decision to approve this work or not. I said go. A little while later I got a call from the office alerting me to a change order for my review. Keep in mind the work was already underway, and they could have charged me anything they wanted. Instead, the change order was priced very reasonably, and I was very glad to sign it. The crew did an excellent job remedying the original framing deficiencies and laying down new roof decking so everything was flat and ready for the new roof. Also, the crew ran into a couple other pre-existing conditions that they worked through. First, when they installed new flashing around the chimney, they removed the original 1x4 hardieplank trim, but at 40+ years it was brittle and broke. The crew had some 1x4 wood trim on hand but recognized I'd probably want hardieplank back on there. They gave me time to run to Home Depot and grab what was needed to re-trim it properly. No additional cost. Similarly, one of the vent stacks on the house had broken off (before they ever showed up) and was too short to properly seal. Again, the crew leader brought this to my attention, and I was able to run to home depot again to get the PVC pipe and coupling necessary for a proper repair so they could then install the boot and seal things properly. This was not their problem to solve; they just wanted to do the job right. Finally, I'll note that the crew did a fantastic job keeping the job site clean. I just can't say enough about the care and attention this crew put into making this job perfect. Absolutely 5 star performance.
Clark Hughes
We chose Jamar because they hit the sweet spot: the most competitive quote and a stellar reputation for metal roofs. They absolutely delivered. The craftsmanship is exquisite and the team was professional from start to finish. During tear-off they accidentally damaged a couple of window screens and a lamp—things that can happen on any project—but they were completely upfront, took responsibility immediately, and replaced them without me even asking. That integrity mattered a lot to us. They also did a thorough cleanup; we’ve had zero issues with nails or debris. Special shout-out to Cruz, Steve, and the crew—super responsive to every question and genuinely helpful throughout. If you’re considering a metal roof, I can’t recommend Jamar enough. Five stars.
Achal Gupta
Call (512) 441-8437It was great to work with Cody throughout the process from quotation the actual roof installation. Cody was very responsive and diligent in overseeing the project. We were very happy with his service. Likewise, Alejandro, who was the lead installer was very attentive to his work. He and his team did a fantastic job with our roof!
Pedro Nicolas Rivera
Reference: InterNACHI roof inspection standards