A thicker, flexible, seamless rubber roof system for flat roofs with persistent leaks or problem seams. Installed by A-1 across Broward, Palm Beach and Miami-Dade, with free inspections and written warranties.
25% Off Leak Repair + a FREE Roof Inspection
Licensed & insured
CCC1333587 | CBC1263521
Trusted In Florida Since 2012
Second-generation roofer
5.0 on Google
40 five-star reviews
Manufacturer certified
Tremco, GAF & GE
Open 24/7
Emergency leak response
Many of our R400 customers had lived with a leaking flat roof for years before calling us. Here is what they say about finally getting it fixed.
R400 is a rubber roofing system we use on flat and low slope roofs that keep leaking no matter how many times they are patched. It is applied as a liquid and cures into a thick, flexible rubber membrane that bonds to the roof surface. Because it goes on as one continuous layer, there are no seams for water to work into.
Compared with a standard rubber roof coating, R400 is built up thicker. That extra thickness and flexibility is what makes it a good fit for roofs with problem seams, cracked surfaces, awkward details and lots of penetrations, where a thin coating might not hold up.
It is not the right answer for every flat roof. If the deck is rotted or the insulation is soaked, the roof needs to be repaired or replaced first. We check for that before we recommend R400, so you are not paying to cover up a bigger problem.
R400 is one of several ways to restore or replace a flat roof. Here is how it compares with the other options we offer.
A thick, seamless, flexible rubber layer for problem roofs with persistent leaks, bad seams or many details to seal.
A sprayed silicone membrane that reflects heat and resists ponding. Our GE certified option for sound roofs that need restoration.
A new membrane roof after tear-off, the right choice when the existing roof or deck is too far gone to restore.
For a single leak on an otherwise healthy roof, a spot repair may be all you need, with 25% off leak repair.
Preparation is the most important part of any fluid-applied roof. Here is how we do it.
We inspect the roof and check for wet insulation, soft decking and failed drainage before recommending R400.
Damaged areas are repaired, the surface is cleaned, and seams, flashing and penetrations are prepared.
Problem seams, curbs, drains and penetrations get reinforced first with extra layers of protection.
R400 is applied across the roof to build a thick, continuous, seamless rubber membrane.
We inspect the finished roof, photograph the work and provide your written warranty.
A full flat roof replacement means tearing off the old roof, disposing of it and installing a new system. That is sometimes necessary, but it is disruptive and costly. If the roof structure is still sound, R400 can seal it for much less, with less noise, less debris and less time on your property.
For owners who have paid for patch after patch on the same flat roof, R400 offers a different approach: instead of chasing individual leaks, it covers the whole surface in one seamless rubber layer.
We will always give you an honest comparison. If replacement is the better long-term value, we will say so and show you why.
25% OFF
Book a free inspection. If a leak repair is all you need, you get 25% off it.
R400 is used on flat and low slope roofs. We inspect the existing surface to confirm it is sound and compatible before recommending it.
R400 is applied thicker and forms a more robust, flexible rubber layer, which makes it better suited to roofs with persistent leaks and problem seams than a thin coating.
Yes, as long as the underlying roof is not saturated or rotted. We repair wet or damaged areas first, then apply the system.
Yes. We use it on homes, condos and commercial buildings. Commercial roofs get a written warranty that fits the system installed.
Start with a free inspection. We will check the roof’s condition and moisture and recommend the option that makes the most sense for your building and budget.
Get a free inspection and an honest recommendation on R400, silicone or replacement. See all roofing services. Licensed CCC1333587 | CBC1263521.
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