G&J Builders CSLB #1144907
Sheet 01 · Roofing · Residential & commercial · Los Angeles County

Get the roof handled before the rain does it for you.

NOAA's winter outlook puts Southern California in the above-normal precipitation range this season. A roof that got through the last few dry winters on borrowed time is not going to get through this one. We repair roofs, replace roofs, and answer the phone when yours is leaking at nine at night — houses, apartment and HOA buildings, and commercial flat roofs.

Active leaks
Triaged first
Tarp and dry-in
Inspection
Written report
with photos
Buildings
Residential and
commercial
License
CSLB #1144907
Bonded & insured
Roofing work

Five kinds of roofing work

Houses, apartment and HOA buildings, and commercial flat roofs — all of it run by the same person who answers the phone. Nobody sells you a roof you don't need.

Storm response

If it is
leaking right now

Call or text (818) 857-2999. Do not wait for the rain to stop to make the call — the schedule fills in the order people call, not in the order roofs get wet.

Call (818) 857-2999

Move what is under it and put a bucket down. Then pull back the insulation in the attic if you can reach it safely. Wet insulation holds water against the ceiling long after the rain stops and that is what turns a small leak into a drywall replacement.

Photograph it while it is actively leaking. Wet ceiling, stained drywall, dripping point, and the time of day. If this turns into an insurance claim later, those photos are worth more than anything anyone writes down afterward.

Nobody should be on your roof in the rain except to tarp it. A permanent repair needs a dry deck. Any roofer who tells you he can properly seal a roof mid-storm is selling you a callback.

Roof types

What we install

Every roof on this list gets new underlayment and new flashings. Reusing old flashings to save a few hundred dollars is where most re-roofs fail.

Composition shingle

Architectural asphalt shingle. The default for most Los Angeles houses — 20 to 30 years, the widest range of manufacturer warranties, and the lowest cost per square. Tear-off, deck inspection, synthetic underlayment, new valley and wall flashings.

Concrete & clay tile

Common on Spanish and Mediterranean houses across the Valley and Pasadena. The tile outlives the underlayment beneath it by decades, so most tile roofs need a lift-and-relay rather than new tile — the existing tile comes off, new underlayment goes down, and the tile goes back.

Flat & low-slope

TPO, modified bitumen, and torch-down for flat roofs, decks over living space, and the low-slope sections behind parapets. The same systems go on commercial and apartment buildings. This is where standing water and bad drainage cause most of the leaks we get called out on.

Metal & specialty

Standing seam and metal panel, plus the transitions where a metal section meets tile or shingle on additions and remodels. Long service life and the right answer on low-slope sections that get too much sun.

Re-roofs generally require a permit from LADBS, the County, or your city. We confirm what your address needs before work starts.

Inspection

What the inspection
actually covers

A roof inspection that is really a sales visit takes fifteen minutes and ends with a price for a whole new roof. This one ends with a written report, and sometimes the report says your roof is fine.

  • Roof surface — cracked, lifted, slipped, or missing shingles and tile
  • Underlayment condition where it can be seen or probed
  • Flashings at walls, valleys, chimneys, skylights, and penetrations
  • Drainage — scuppers, gutters, downspouts, and standing water on flat sections
  • Fascia, eaves, and rafter tails for water damage and dry rot
  • Attic walk for active leaks, staining, wet insulation, and daylight
  • Ventilation and any condensation problems being mistaken for leaks
  • Photographs of every defect, keyed to a location on the roof
  • Line-item cost to repair, and a separate cost to replace
  • An honest estimate of how many more seasons the roof has left
Commercial & multifamily

Commercial roofs
and occupied buildings

A commercial roof is not a bigger house roof. The building stays open, the tenants stay in it, and the work has to be phased so nobody loses access or takes water while it is going on.

Apartment, multifamily & HOA

Flat and low-slope re-roofs and repairs on apartment buildings, condominium common-area roofs, and HOA-managed property. Written scope and photographs your board or property manager can put in front of owners.

Retail, office & light industrial

TPO, modified bitumen, built-up, and coating restoration on strip retail, office, and warehouse buildings. Work sequenced around business hours so the tenants keep operating.

Leak investigation on flat roofs

Chronic leaks on commercial roofs are usually drainage, a flashing, or a failed penetration — not the field of the roof. We find the actual source before anyone quotes you a full replacement.

Maintenance & budget planning

Annual roof condition reports with photographs, a remaining-life estimate, and a repair-versus-replace cost, so the roof lands in the reserve study and the operating budget before it lands as an emergency.

Certificates of insurance, additional-insured endorsements, and W-9 issued on request for property managers and boards.

Insurance

Storm damage
and your carrier

Carriers pay for sudden damage, not for age. The whole fight is over which one your roof is, and that gets decided by what is documented in the first two weeks.

How the claim side works

Wind lifting tile, a limb through the deck, a section of shingle torn off in a storm — those are claims. A twenty-eight-year-old shingle roof that finally gave up is not, no matter how it is written up, and anyone who tells you otherwise is setting you up for a denial.

What we do is the documentation side: photograph the damage while it is fresh, write the repair as a line-item scope at current material and labor cost, and give you something specific enough that your adjuster is arguing about numbers instead of about whether the damage exists.

If the first offer doesn't cover the actual repair, the supplement is a document, not a phone call. We write it.

How a roof job runs
1

Call

Tell me what you have — a stain on the ceiling, a roof you know is old, or a storm that just came through. Active leaks get scheduled first.

2

Inspection

Roof and attic walked, defects photographed, and a written condition report with a repair cost and a replacement cost side by side.

3

Scope & price

A line-item proposal. Materials, tear-off, deck repair allowance, underlayment, flashings, and permit — not a single lump-sum number.

4

Work

Permit pulled where required, materials staged, roof done. Deck opened and inspected before anything new goes down over it.

5

Closeout

Final inspection signed off, manufacturer warranty registered, and photographs of the finished roof and flashings for your records.

Questions

Roofing questions
we get every winter

How fast can you look at a roof that is leaking?

Call or text (818) 857-2999. During storm weeks active leaks are triaged first — we get a tarp or a temporary dry-in on the roof so the water stops, then come back for the permanent repair once it is dry enough to do properly.

Can a roof be repaired in the rain?

Tarping and temporary dry-in, yes. A permanent repair or a re-roof, no. Adhesives, underlayment, and shingle sealing all need a dry deck, so the honest answer mid-storm is stop the water now and schedule the real work for the next dry window.

Do you do commercial and apartment buildings?

Yes. Flat and low-slope roofs on apartment and multifamily buildings, HOA common-area roofs, retail and office, and light industrial. Occupied buildings get phased so nobody loses access, and the work is scheduled around business hours.

How long does a roof last in Los Angeles?

Composition shingle runs 20 to 30 years, tile can go 50 or more while the underlayment under it lasts 20 to 30, and flat membranes run 15 to 25. Out here the sun usually kills the underlayment and flashings before the surface wears out — which is why a tile roof can look fine and still leak.

Do I need a permit to replace a roof?

A re-roof generally does, from LADBS, the County, or your own city depending on your address. Small repairs generally do not. We confirm what your address requires before work starts and pull the permit as part of the job.

Will insurance pay for a new roof?

For sudden damage, often. For age and wear, no. What decides it is documentation, which is why we photograph the damage, write a line-item scope, and give you something specific to put in front of your adjuster.

What areas do you cover?

Woodland Hills and the San Fernando Valley, Pasadena and Altadena, Pacific Palisades and the Westside, and greater Los Angeles County.

Next step

Get it looked at
before the next storm

No charge for the first conversation. Send a photo of the stain or tell me how old the roof is and I'll tell you honestly whether it needs a repair, a replacement, or nothing at all this year.

Call or text

(818) 857-2999

Email

gianni@gjbuilders.org

Schedule an inspection