Flat roof replacement in Coral Gables means dealing with heat, rain, and salt air. We've been installing flat roofs across Miami-Dade and Broward since 1985. Your flat roof doesn't work like a pitched system: it depends on membrane integrity, drainage, and fastener patterns that can handle coastal wind.
Flat roof replacement means tearing off the old membrane, checking the deck for water damage, installing new insulation if needed, and putting down a new membrane with proper fastening and seam sealing. We verify drainage slopes, install edge metal and flashing, and make sure the system meets Miami-Dade County's High-Velocity Hurricane Zone requirements. Most residential jobs take 2 to 5 days depending on size, access, and weather.
We check the deck for soft spots, water damage, and structural issues that need fixing before the new membrane goes down.
Coral Gables has Mediterranean Revival homes, mid-century modern buildings, and contemporary designs: a lot of them with flat or low-slope sections. Flat roofing handles the UV and afternoon storms when you get the drainage and membrane right.
The city requires permits for roof replacements. Inspectors check that new flat roofs meet current wind-uplift standards and drainage requirements. Coral Gables is in the High-Velocity Hurricane Zone, so flat roofs need engineered fastener patterns and edge securement that resist wind during tropical storms.
Flat roofs here face three problems: standing water from heavy rain, UV degradation from year-round sun, and salt air near the coast. TPO and modified bitumen perform differently under these conditions. We help you figure out which membrane fits your building's exposure, your maintenance tolerance, and your budget.
Every replacement starts with a full inspection. We check the deck for soft spots, water damage, and structural issues that need fixing before the new membrane goes down. If the deck is compromised, we fix it: putting a new membrane over damaged substrate leads to failure within months.
We verify drainage slopes during tear-off. Flat roofs aren't actually flat: they need a minimum slope to move water toward drains or scuppers. If the slope is inadequate, we install tapered insulation to create proper drainage. Standing water shortens membrane life and creates leak risk.
Membrane installation follows manufacturer specs and Miami-Dade County's fastening requirements. We use mechanically-attached or fully-adhered systems depending on wind exposure and membrane type. Seams are heat-welded or chemically bonded. Edge metal, flashing, and penetration details are sealed and fastened to resist wind uplift.
The final step is a water test. We flood-test the roof or run hoses across the surface to verify that water drains and no leaks exist at seams, penetrations, or edges. This catches problems before we leave.
TPO (thermoplastic polyolefin) is the most common flat roofing membrane in South Florida. White TPO reflects heat, which cuts cooling costs and extends membrane life. It's heat-welded at the seams. TPO handles UV well and resists algae. Typical lifespan is 15+ years depending on thickness and maintenance.
Modified bitumen is a rubberized asphalt membrane that works well in hot climates. It's installed in multiple layers with torch-applied or cold-adhesive methods. Modified bitumen is more puncture-resistant than TPO, which matters if you have roof equipment or foot traffic. It comes in reflective white or granulated surfaces. Lifespan is 15+ years with proper maintenance.
EPDM (rubber membrane) is less common in Coral Gables but still used on some roofs. It's a black membrane that absorbs heat, which increases cooling costs compared to white TPO. EPDM is durable and handles temperature swings, but seams are glued rather than heat-welded, so they need careful sealing.
We help you compare these based on your roof's size, exposure, and how you use the space. If you have rooftop HVAC equipment, we talk about puncture resistance and walkway pads. If energy efficiency matters, we explain reflectance ratings and how they affect cooling costs.
| Membrane Type | Lifespan | Reflectance | Seam Method | Best For |
|---|---|---|---|---|
| TPO (white) | 15+ years | High (70%+) | Heat-welded | Energy efficiency, UV resistance |
| Modified Bitumen | 15+ years | Medium (reflective cap) | Torch or adhesive | Puncture resistance, equipment areas |
| EPDM (rubber) | 15+ years | Low (black) | Glued seams | Temperature stability, budget |
| PVC | 15+ years | High | Heat-welded | Chemical resistance, commercial |
Coral Gables requires a building permit for flat roof replacement. We handle the permit application, submit engineered drawings when required, and coordinate inspections. The permit process typically takes 1 to 2 weeks depending on complexity and the city's review backlog.
Inspectors verify that the new roof meets current wind-uplift standards, drainage requirements, and energy code insulation minimums. They check fastener patterns, edge securement, and flashing details. If the roof includes new drains or scuppers, they verify proper sizing and connection to the building's drainage system.
We schedule inspections at the right stages: typically a rough inspection after deck repairs and insulation, and a final inspection after the membrane is complete. Passing on the first attempt requires knowing the code and installing the system correctly from the start.
Coral Gables sits inside the Miami-Dade High-Velocity Hurricane Zone, which requires every membrane assembly to carry a Notice of Acceptance covering the specific combination of deck type, insulation, membrane, and fastener pattern. Substituting any single component voids the NOA, so we install each system exactly as approved and reference the assembly number on the permit drawings.
TPO and PVC systems in HVHZ applications use either mechanically attached or fully adhered methods depending on the deck. Mechanically attached TPO over wood deck typically requires fasteners on 6 to 12 inch centers along the seam, with closer spacing at perimeter and corner zones where uplift pressures are highest. The perimeter zone extends 10 percent of the roof width inward from the edge; the corner zone occupies the outer 10 percent at each corner. Both zones use roughly twice the fastener density of the field zone.
Modified bitumen in HVHZ applications uses a two-ply or three-ply assembly torch-applied or cold-adhered to a base sheet that is mechanically fastened or fully adhered. The cap sheet's granulated surface protects the underlying modified asphalt from UV and provides walking traction for service crews. Modified bitumen handles ponding water better than single-ply systems, which matters on roofs where drainage is marginal.
Drainage design follows the 1/4 inch per foot minimum slope toward primary drains, with secondary scuppers placed 2 to 4 inches above the primary drain inlet to handle overflow during heavy rainfall events. Ponding-water remediation on existing roofs typically uses tapered polyisocyanurate insulation to build slope toward drains; we field-cut the tapered panels to match the existing roof geometry and verify the finished slope with a water test before installing the membrane. Scupper sleeves and drain bowls are flashed with prefabricated boots compatible with the membrane chemistry, sealed at the membrane interface and mechanically clamped at the deck.
We're certified applicators for Tremco, Sika, and PolyGlass flat roofing systems. These certifications require training on proper installation methods, fastening patterns, and seam-sealing techniques specific to each manufacturer's products. Certified installation is often required to activate the manufacturer's material warranty.
Our workmanship warranty covers installation for up to 12 years. This warranty is separate from the manufacturer's material warranty and covers labor, fastening, and seam integrity. If a leak develops due to installation error, we repair it at no cost to you.
All warranty coverage is subject to the terms and conditions outlined in the written warranty document provided at project completion. Warranty claims require proper maintenance and periodic inspections as specified in the warranty terms.
Homeowners weighing alternatives to a flat-roof replacement on a mixed-pitch home often consider the pitched sections separately. We also install Coral Gables metal roofing profiles such as aluminum roofing in Coral Gables and Galvalume roofing in Coral Gables on the steep-slope portions of the same building. The full neighborhood scope of materials and services we install is documented on Istueta's Coral Gables service area page.
For more information about flat roof replacement, see our flat roofing guide and roof replacement overview.
Most flat roof leaks occur at seams, penetrations, or edges where the membrane is sealed to flashing or equipment. Poor drainage that allows standing water accelerates membrane degradation and creates leak risk. Punctures from foot traffic or falling debris also cause leaks. Regular inspections catch these issues early before they cause interior water damage.
Sofia came to my house and was polite, thorough and knowledgeable. She gave me a quote for multiple options and explained the different options for roof replacement and repair. She gave me all the options without pressuring me to make a decision on the spot. Very happy with the information I received from Sofia.
3 days ago
Sophia was very patient with me very good associate. Looking forward to meeting her again for the next time on October 2 Play final review of the estimated
3 days ago
(Translated by Google) I had an excellent experience with Sofia; she was super friendly and professional from the first moment. Thank you for providing such great service. (Original) Tuve una excelente experiencia con Sofia fue súper amable y profesional desde el primer momento, gracias por brindar un buen servicio
4 days ago
I had a great experience with Istueta Roofing. Sofia was extremely helpful, professional, and patient throughout the entire process.
4 days ago
Sofia B was excellent. She was knowledgeable and worked quickly Thx
a week ago
Thank you Sophia for a thorough inspection for my roof maintenance! Especially for inspecting inside the attic in the summer! Also, since my house stays too hot she recommended solar vents which apparently my home has no vents other than soffit vents. Looking forward to istueta installing them.
a week ago
Ricardo did a great overall job explaining everything to us. Honest and straight forward.
a week ago
(Translated by Google) Very professional and very respectful (Original) Muy profesionar y muy respetuoso
a week ago
I contacted the company for a quote on re-roofing. Ramon Alvarez carried out the site visit right on schedule and with great attention to detail. The quote I received is extremely detailed; every cost item is clear and well-explained. The prices are in line with the market given the quality offered, and they were very helpful in clarifying any questions I had about the materials. Highly recommended!
a week ago
Sofia explain very well about the ROOFING and the FINANCE I appreciate her very well and thank you Sophia. Have a blessed day.
a week ago
Fabrizio montesdeoca is a good men he knows how to talk to customer and confidence them.
a week ago
Very professional presentation done by Sofia . We request an estimate for replacement and repair of flat roof .
2 weeks ago
(Translated by Google) Sofia was a very kind person; we understood everything she explained to us. Her attention and performance in her work were very efficient. (Original) Sofía fue una persona muy amable, entendimos todo lo que nos explicó, muy eficaz su atención y su desenvolvimiento en su trabajo
2 weeks ago
Mr Ramon wasVery professional and clear and open to question .
2 weeks ago
Fast and Great Service with Sofia, she has attention with all the details, and explain everything very well, I'll move forward with my roof project soon
2 weeks ago
Phenomenal professional and knowledgeable visit by Ricardo to the point that we are looki g forward to establish the contract after the insurance determination to replace the roof.
2 weeks ago
(Translated by Google) VERY GOOD EXCELLENT SERVICE FROM AGENT SOFIA BENAVIDES (Original) VERY GOOD EXCELENTE SERVICIO CON LA.AGENTE SOFIA BENAVIDES
3 weeks ago
I had a great experience working with Ramon. He was professional, knowledgeable, and made the entire roofing process easy to understand. He took the time to answer all my questions, never made me feel pressured, and was always responsive throughout the process. His honesty, attention to detail, and commitment to providing excellent customer service really stood out. I highly recommend Ramon to anyone looking for a trustworthy and reliable roofing sales professional!
4 weeks ago
Ricardo did a great job explaining and showing me condition of the rooftop
a month ago
I worked with Ramon Alvarez and if you need a roof guy I would definitely recommend him. He really goes the extra mile to make sure you are taking care of 10/10.
a month ago
(Translated by Google) Mr. Ramón is an excellent and very professional person. I am a Realtor and I will recommend him to my future clients and family. Thank you. (Original) El Sr Ramón es una excelente persona muy profesional, soy Realtor y lo voy a recomendar con mis futuros clientes y familiares , gracias
a month ago
Great service and very informative and kind and fought for my best price.
a month ago
Sofia was amazing, very knowledgeable and professional. It was a pleasure to meet with her
a month ago
Outstanding experience with Istueta! You can tell they truly care about their customers and the quality of their work. Their attention to detail, professionalism, and pride in what they do really set them apart. I highly recommend them to anyone looking for a roofing company they can trust.
a month ago
I’m very happy with this company. My roof was already quite old, and I decided to replace it for safety reasons. They were always attentive, reliable, and professional throughout the entire process. In my case, I worked directly with Sofia, and in the end we had them replace the roof on our home. We were very satisfied with both the process and the final result.
a month ago
Construction is hard, complicated, and in many occasions frustrating.. Istueta is a contractor who managed to handle complications with grace, they handle the hard part with knowledge and move frustration to solutions.... I will better yet I am going to use them again.. the sunlight look cool and works even better.. Thank you guys...
a month ago
Fabricio was v Very professional ery professional showed us all the options with no pressure a valuable asset to your company.
a month ago
Hi, my name is Gabriel. I’m a general contractor, and I’m very grateful to always use Istueta Roofing’s services. They’re extremely professional, punctual, and work in a very organized manner. If you’re looking for someone who follows your guidelines and takes care of your roof just as you would, this is the company I recommend—100%.
a month ago
They came to do an inspection of my roof and gave a great diagnosis. Sofia has the best attitude and gave a lot of information
a month ago
My girlfriend and I had a very informative conversation with Will, Ariel and Laura regarding the process of installing a new roof on our house. We are so excited to get started them. They were clear and concise about how the process of installing a new roof along with the materials used to do so. They take a lot of pride in their work and gave us peace of mind of moving forward with their company.
a month ago
Ramon was a very helpful guy. He was very knowledgeable and respectful
a month ago
Great roof replacement Sofía showed us all the options Metal roof was our choice
a month ago
We were very pleased with the timeliness and professionalism by Fernando. Most importantly, he educated us on the different products. Great company.
2 months ago
(Translated by Google) Excellent service, the best in Miami (Original) Excelente atención los mejores de miami
2 months ago
Mr. Fernando Tolon was a pleasure to talk to, extremely knowledgeable and a great person. Thanks to Istueta Roofing for having him onboard.
2 months ago
Fernando did an excellent job explaining every thing. Very impressive
2 months ago
Fernando was excellent on his consultation with regards to my roof and their materials look very impressive for my roof. . I was very impressed their 1 to 1 consultation and services, offered. I liked the 40yrs in roofing service.
3 months ago
I met with Fernando Tolon, a Roofing Consultant for Istueta Roofing, for a quote to replace my roof. Mr Tolon was thorough, professional, and knowledgeable.
3 months ago
I met with Fernando Tolon, consultant with Istueta Roofing to discuss the many roof replacement options. Mr. Tolon was very knowledgeable and went over all the options and made sure I understood them. He was courteous and very patient with the many questions that I had. I am looking forward to starting the roof replacement.
3 months ago
This Roofing contractor is the real thing! Staff is professional, courteous, responsive. For a dirty job these folks did an outstanding job of cleaning after themselves. More importantly they took great care in protecting my valuable plants. Would highly recommend. Hire Istueta Roofing with confidence!
3 months ago
Fernando arrived on time for our estimate. His expertise and presentation was on point and to be honest, stellar. I love the products offered. The abundance of color choices and virtual visual examples were great. Thanks, Fredrick
3 months ago
Istueta put a new roof on my home about 3 years ago and at that time I did not have them seal my chimney and it started leaking a few weeks back. Since o was very happy with the work they did on my roof, I contacted them to perform the repair on my chimney. The crew was respectful, professional, kept me informed during the process and did a great job. I highly recommend them if you are looking for a top quality company.
3 months ago
I have been quoting a new roof project with 4 other companies. Fernando Tolon has far exceeded the presentation provided by the other bidding companies. Extremely happy with Istueta Roofing level of service so far.
3 months ago
Fernando did a great job providing me product information and financing alternatives with the estimate on my new roof.
3 months ago
Had an excellent experience and conversation with Fernando Tolon a roofing consultant with Istueta, well knowledgeable and experienced very professional. Lo re comiendo para una experience de techos professional con Istueta roofing.
3 months ago
Súper profesional .. he explain me all products .. thank you for the service you provide ..my consultant was Fernando Tolon
3 months ago
(Translated by Google) Excellent service, very professional, the best (Original) Excelente servicio,muy profesional,los mejores
3 months ago
Thank you Anthony and the whole team at istueta for a job well done and the support
3 months ago
Anthony was thorough with his work and provided all details requested when evaluating the work on our roof. Very honest as well.
3 months ago
Anthony Rivas has being an excellent guide in this process of changing my roof, he explained to me the process in a very detailed manner , giving me options on how to proceed as well of new ideas that i could apply to my new roof !! Thank you Anthony
3 months ago
Reviews sourced from Istueta Roofing's verified Google Business Profile. · See them all →
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