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Roof repair and coastal re-roofing in Costa Mesa, CA
Costa Mesa sits just inland of Newport Beach, close enough to the ocean for salt air and a morning marine layer. Its post-war ranch homes, townhomes and apartments carry shingle, tile and flat roofs.
Roofing in Costa Mesa at a glance
ZIP codes we cover here:
- 92626
- 92627
- 92628
Nearest office: Long Beach. Phone answered 24/7.
Call (562) 414-1770Costa Mesa is southeast of Long Beach, around where the 405 meets the 55 and the 73. Our crews come down the 405 from Long Beach, and most neighborhoods are a short drive off Harbor Boulevard, Newport Boulevard or Fairview Road. The south and west parts of the city sit closest to the coast.
Many Costa Mesa homes have been remodeled or added onto, so the roof is often a mix of old and new sections. We look at how those pieces join, find where water gets in, and give you choices for fixing it or starting over.
Mid-century ranches, townhomes and remodels near the coast
Much of Costa Mesa was built in the 1950s and 1960s, with single-story ranch houses and some two-story homes on the east and west sides of the city. Townhome and condo complexes, apartments and newer infill homes fill in around them, and many older houses have had second stories or large additions built since.
Asphalt shingle is common on the ranch homes, concrete tile on many complexes and re-roofed houses, and flat roofs on additions, garages and modern remodels. Salt air from the coast reaches most of the city, so steel flashing, vents and fasteners corrode faster than they would farther inland.

Roof problems we see most in Costa Mesa
Old and new roof seams
Additions and second stories often join older roof sections with different slopes and materials. Those joints are where many Costa Mesa leaks start.
Parapet caps on boxy remodels
Contemporary remodels often use flat roofs behind parapets. Cracked caps and clogged drains let water in during the first long storm.
Salt-pitted drip edge
Steel drip edge and gutters near the coast pit and stain. Once they rust through, they pull away from the fascia and let water behind the gutter.
Mismatched flashing between units
In townhome complexes, buildings are often re-roofed on different schedules. Shared walls end up with mismatched flashing that leaks at the joint.
Costa Mesa permits, HOA complexes and marine air
Costa Mesa has its own building department, and a re-roof needs a permit and inspection there. Townhome and condo associations usually control roofs on their buildings, so we work with the board or property manager on scope and colors. For single-family homes, we check whether Title 24 cool roof rules apply before ordering material.
Because of the marine air, we use corrosion-resistant flashing, vents and fasteners and seal cut metal edges. Morning fog can keep low-slope surfaces wet, so we plan membrane work for later in the day when needed. Costa Mesa is a straight run down the 405 from our Long Beach office.
Most-requested here
Roofing services for Costa Mesa
Roof Repair
Roof repair covers the targeted fixes that keep a roof working: replacing broken tiles or shingles, resealing penetrations, fixing flashing and patching worn sections of a flat roof.
Read moreRoof Flashing Repair
Flashing is the metal that seals the joints of a roof: where it meets walls, in valleys, around vents and along the edges.
Read moreTPO Roofing
TPO is a white thermoplastic single-ply membrane whose seams are welded with hot air into one continuous sheet.
Read moreApartment & HOA Roofing
Apartment and HOA roofing covers repair and replacement of roofs on apartment buildings, condo complexes and townhome associations, from flat parapet roofs to tile and shingle on garden-style buildings.
Read moreRoof Replacement
Roof replacement means tearing the old roof down to the decking, fixing what is underneath and installing a new roof system.
Read moreFAQ
Questions from Costa Mesa
Can you work with my Costa Mesa HOA's property manager on a re-roof?
Yes. We inspect, give the board a written scope and price, and schedule around residents. On complexes we can phase buildings so not every unit is affected at once. Apartment and HOA roofing typically runs $6.10 to $15.20 per sq ft, and the real number comes after we look at the roofs.
My Costa Mesa home has a new addition. Why does it leak where it meets the old roof?
That joint depends on flashing that ties two different roofs together, and it is often done with sealant instead of proper metal. When the sealant dries out, rain gets behind it. We open the joint, install new step or counter flashing, and close it back up with matching material.
Can you replace the rusty gutters and drip edge on my Costa Mesa house during a roof repair?
Yes. Salt air pits steel drip edge and gutters, and once they rust through they can pull the fascia loose. We replace them with aluminum or coated metal while the roof edge is open, which gives a cleaner seal. Gutter installation runs $11.40 to $24.80 per linear foot.
Roof trouble in Costa Mesa?
Call Denco at (562) 414-1770. Someone answers 24 hours a day, and our crews work out of Long Beach and La Mirada.