Flat Roof Repair
Flat roof leaking in Phoenix? We find the source on foam, built-up, mod bit or TPO roofs and fix ponding, seams and drains. Call (602) 878-3594 24/7.
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Roofing in Sunnyslope, Phoenix, AZ
Sunnyslope's older homes sit at the foot of the mountains, many with flat roofs carrying evaporative coolers and decades of patch jobs. We clear the clogged scuppers, fix the cooler curbs, and recoat or replace the surface before monsoon season tests it.
Short answer
Most Sunnyslope roofs we see need flat roof repair: leaks around evaporative cooler and HVAC curbs, clogged scuppers, and worn foam or rolled roofing. We remove failed patches, repair or replace the curb flashing, clear drainage and recoat the surface. When the roof has too many layers or the deck is soft, we explain why a tear-off and new roof makes more sense.
Evaporative coolers are still a common sight on Sunnyslope roofs, and the curb or stand under each one is where most flat roof leaks begin. Coolers drip, overflow and leak mineral-heavy water onto the roof all summer. Over years, that water breaks down the coating around the curb, rusts the metal pans and soaks into seams. Add an AC unit that replaced the cooler but left the old penetration poorly sealed, and you have several leak points in a few square feet.
When we work on a Sunnyslope roof, we pay close attention to every curb, duct and penetration. We cut out failed patches, rebuild the flashing around each unit, and decide whether the old cooler opening should be sealed for good. Where a cooler has been abandoned, removing it and closing the hole properly often stops a leak that has been patched again and again. That kind of flat roof leak repair lasts because it fixes the source, not just the stain.

Sunnyslope sits right below the mountains, and wind off the slopes and haboobs moving across the city drop a steady layer of dust onto its flat roofs. Combine that with leaves from mature trees and you get scuppers and drains that clog just in time for the first monsoon storm. When a scupper is blocked, water ponds against the parapet or the edge of the roof, and leaks show up along exterior walls rather than in the middle of the ceiling.
Clearing scuppers and drains before monsoon season is one of the cheapest things a Sunnyslope owner can do for a flat roof. We clear them on every visit and check that the openings sit at the right height to drain the roof. Where scuppers are rusted out or too small, a scupper repair or replacement keeps water moving off the roof instead of backing up against the walls. On some homes we add a second scupper so one clog cannot flood the roof.
If the foam or rolled roof is still dry and firmly attached, a fresh coat may be all it needs. An elastomeric roof coating reflects heat, seals small cracks and adds years of life for much less than a new roof. We check for moisture, soft spots and blistering first, because coating over a wet roof traps water and makes things worse. A light-colored coat also keeps the rooms below noticeably cooler on July afternoons.
When a Sunnyslope roof has two or three old layers, wet insulation or a soft deck, recoating is throwing good money after bad. In that case we tear off to the deck, replace damaged sheathing and install a new foam or membrane roof. Sunnyslope is close to our Washington Street office, a short drive up Central Avenue or I-17, so we can reach most homes here quickly. Call (602) 878-3594 any time if water is coming through the ceiling during a storm.

Every service on our list is available here. These are the calls we get most from Sunnyslope.
Flat roof leaking in Phoenix? We find the source on foam, built-up, mod bit or TPO roofs and fix ponding, seams and drains. Call (602) 878-3594 24/7.
Learn moreAcrylic elastomeric roof coating for Phoenix flat, foam and metal roofs: bright white, flexible in heat, fairly priced. Call (602) 878-3594 any time.
Learn moreScupper and canale repair in Phoenix: we clear, reflash and rebuild the wall drains on flat roofs so monsoon water leaves fast. Call (602) 878-3594.
Learn moreFoam roof turning brown, blistered or pecked in Phoenix? We clean, patch and recoat before UV eats the foam. Call (602) 878-3594 any hour to set a visit.
Learn moreReplacing a worn flat roof in Phoenix? We compare foam, TPO, mod bit and built-up for your home, fix slope and drains, then rebuild. Call (602) 878-3594.
Learn moreIf the cooler is no longer used, removing it and properly closing the roof opening is often the best move for a Sunnyslope home. Abandoned coolers leak, rust and let pests in. We take out the unit, remove the curb or stand, deck over the opening and seal it into the surrounding roof.
At least once a year, ideally in late spring before monsoon season, and again after any big dust storm. Sunnyslope roofs near the mountains collect a lot of dust and debris. A clogged scupper causes ponding and wall leaks that are easy to prevent with a simple cleaning.
Only if those layers are dry and firmly stuck down. Many older Sunnyslope roofs have multiple old layers that trap moisture. We check for wet spots and soft areas first. If the roof is sound, we recoat it. If not, we recommend tearing off to the deck and starting fresh.
Call (602) 878-3594 any hour. Tell us your address and what you are seeing, and we will set up a visit.