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Licensed & Insured. CSLB #1092889 Serving the San Fernando Valley & the Westside Service Areas FAQ Client Support (818) 934-0075
MAMOS Construction & Design

Mamos Construction & Design

Mamos Construction & DesignROOFING
(818) 934-0075
Roofing  ›  San Fernando Valley  ›  Granada Hills

Granada Hills was built in a hurry in the 1950s. Many of its roofs are on their second or third life.

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Joseph will call you at the number you gave within 15 minutes: 8am to 5pm Monday to Thursday, 8am to 2pm Friday. Outside those hours you are first on the list the next morning. Urgent right now? Call (818) 934-0075.

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How old your roof really is, from permit records
How many years it has left, checked from the roof itself
Whether your address is in a fire hazard zone
Dated photos and notes, in writing for your insurance agent

If the roof still has good years left, the report tells you.

Roof repair, roof replacement and a free written roof inspection in Granada Hills, for houses, condos, HOA and apartment buildings. The median home in ZIP code 91344 was built in 1963, and the 1950s produced more of the housing here than any other decade. The streets climbing toward the Santa Susana foothills are in the city’s Very High Fire Hazard Severity Zone.

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Deck, underlayment, then shingles or tile. The underlayment keeps the water out, and you can only check it from up on the roof.

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Free, no obligationYou keep the report either way
Dated photosTaken on your roof, in every report

What we look for on a Granada Hills roof

Long, low ranch roofs, a protected Eichler tract and a fire line to the north.

Layers on a ranch house

A single-story ranch from the 1950s has had decades to collect roofing over roofing. We check how many layers are up there and what the decking underneath looks like before anything is quoted.

North of the 118

The Saddleridge Fire burned into Granada Hills and Porter Ranch in October 2019. Homes near the foothills sit in the Very High zone, where a new roof has to be Class A.

Eichlers in Balboa Highlands

The 108 homes in the tract are a city Historic Preservation Overlay Zone. Flat and slant roofs there follow a preservation plan as well as the building code, so the material choice comes first.

Broken shingles and worn wood at the roof edge
Broken shingles and worn wood at the roof edge. Every report has dated photos like this one, taken up on the roof.

Before the rain in Granada Hills

Mostly older ranch homes, a tract of flat Eichler roofs, and foothills to the north. Here is what a strong El Niño winter will test.

Decks under 1950s roofs

When a roof has been covered over more than once, soft spots in the original sheathing stay hidden until a long storm soaks through. A walk of the roof in fall finds them first.

Flat roofs that hold water

Eichler flat roofs and low patio covers drain slowly. Check that the drains and scuppers are clear, and look for ponding marks from last winter.

Wind before water

On the foothill streets above the 118, wind season comes first and rain second. Debris on the roof and in the gutters after a Santa Ana event should be cleared before the first storm.

Before the first big storm: book the free roof check, or read our winter storm roof guide.

From our roofs

Recent MAMOS roofing work: shingle re-roofs, flat ADU roofs and tile.

Shingle re-roof in progress in Encino, new ridge vents and flashing going in
Re-roof in Encino: new shingles, ridge vents and pipe flashings going on.
Two roofers in harnesses laying architectural shingles over new underlayment
Shingles going down over new underlayment, crew tied off.
Crew rolling out Polyglass underlayment on a new ADU flat roof
ADU flat roof: underlayment rolled out before the cap sheet.
Finished white cap sheet on an ADU flat roof with every vent flashed and sealed
The same ADU roof finished: white cap sheet, every vent flashed and sealed.
Tarzana re-roof finished: new gray architectural shingles, ridge caps and a flashed skylight
Re-roof in Tarzana, finished: new shingles, ridge caps, skylight flashed.
Clay barrel tile roof with a new gutter line along the eave
Clay barrel tile with a new gutter line along the eave.

What governs a roof in Granada Hills

City rules, plus one historic district with its own plan.

FIRE ZONE
Class A

Addresses in the Very High Fire Hazard Severity Zone need a Class A roof assembly. Wood shake and shingle are off the table across the city.

HPOZ
Balboa Highlands

In-kind asphalt shingle replacement is conforming work. The 2010 plan calls clay tile, slate and built-up roofs inappropriate for these houses.

PERMIT
LADBS

The city’s Department of Building and Safety issues re-roof permits. Replace more than half the roof and the new surface must be a CRRC-rated cool roof product.

We get on the roof, photograph what we find and write it up.

Get my free report

Get a 1950s ranch roof checked from the deck up.

On an older ranch roof the question is usually whether the deck is sound, not whether the shingles look tired. We go up, photograph it, and put the answer in writing.

1950s

the decade that built more of Granada Hills than any other: about 6,900 of the 18,400 homes in ZIP 91344, according to the Census Bureau’s American Community Survey.

Valleys lined on a Long Beach re-roof
Re-roof in Long Beach: valleys lined before the shingles.

Roof questions in Granada Hills

Repair or replace?

Usually the underlayment decides it, and you have to get on the roof to check that. The report gives you the answer, with photos.

What does a new roof change for my insurer?

Most letters name roof age. The permit and completion papers show the new roof’s date; what the carrier does with them is its decision.

Can I re-roof an Eichler in Balboa Highlands without a hearing?

Often, yes. The preservation plan treats in-kind replacement of an asphalt shingle roof as conforming work, reviewed by planning staff. A change of material or roof form is a different conversation, and the report flags it before you commit.

Know what is under the shingles before you decide.

You get roof age, layer count, deck condition and fire zone status in writing. Some homes need a new roof, and others can get a few more years from a repair.

“Joseph was very clear about the process, the costs, the recommendations. … His team was very professional, on time, fast, and respectful, but most importantly, they were good!”

DAVID H.  ·  YELP
ROOF & INSURANCE REPORTREQUEST FORM

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Roof condition, layers, fire zone status and what the city will require. We call back within 15 minutes: 8am to 5pm Monday to Thursday, 8am to 2pm Friday.

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Mamos Construction & Design
Granada Hills  ·  Porter Ranch  ·  Northridge  ·  Mission Hills
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