Corona, CA
Flat roofs do not shed water. They hold it back.
A pitched roof sheds water. A flat roof is a shallow tray that has to be watertight everywhere at once, which is a much harder thing to build.
Describe the flat roofing job
Three questions, then the address. Up to three Corona contractors who do this work.
You are on the list.
No provider in Corona is taking requests through this service yet. We are lining them up, and yours is kept until one can.
- Nobody gets your details yet. Your request stays with us and is not passed to any company.
- One email when someone can help. When a provider covering your area can take it on, we email you once and ask whether you want that company, by name, to contact you.
- Deleted after 90 days. If nobody can take it on, or you do not say yes, your contact details are deleted 90 days after your request.
- You decide, or you do not. There is nothing to cancel and nothing to pay us.
Nobody will call you about this request unless you say yes to a company by name.
Before you let anybody on the roof
The things worth pinning down on a flat roofing job. A contractor who has not raised them has not looked properly.
- Drain, scupper and overflow provision
- Whether a coating is being sold as a repair
- How the flat section is flashed into adjoining walls and pitched roofs
- Whether water ponds anywhere after rain
- Which membrane, and how the seams are joined
Ponding water is the enemy. Anything still sitting there forty-eight hours after rain is a design problem, and tapered insulation is usually the answer.
Single-ply membranes — TPO, PVC, EPDM — are heat-welded or taped at the seams. The seams and the terminations are the whole job.
Coatings can buy a sound roof several years. Coating a failed roof buys you a wet roof with a fresh top coat on it.
Locally
Then, less dramatically: ember intrusion through vents and open eaves. Class A assemblies and closed-off vents matter more here than the colour of the shingle.
About flat roofing here
Are the contractors licensed and insured?
Contractors have to give us their state licence number and proof of liability and workers compensation cover before they can receive requests. You should still ask to see current certificates yourself before work starts — a licence can lapse between checks.
What should I do to prepare?
Clear the driveway, protect attic storage from falling dust, and plan for two loud days. Agree in advance where the dumpster goes and who sweeps for nails.
Why does ventilation keep coming up?
Because a badly ventilated attic cooks the roof from underneath and takes years off it. Intake at the eaves and exhaust at the ridge, in balance. It is cheap during a re-roof and awkward afterwards.
How many contractors will contact me?
No more than three. We picked that number because two quotes is not enough to spot an outlier and five is an ordeal.
Find out what it costs
No cost. We email you once when a provider near you can take it on.