Skip to content
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  ›  Northridge

About half the homes in Northridge were built before 1970, and all of them went through the 1994 earthquake.

FREE WRITTEN ROOF INSPECTIONNO CHARGE

← Back

Got it.

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.

Rather talk now? Call (818) 934-0075

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 replacement and free written roof inspections across Northridge. The median home in ZIP codes 91324 and 91325 was built in 1970. These roofs have been through the earthquake that carries the neighborhood’s name, and through every repair since.

EMBERS 010203

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

CSLB 1092889Check it yourself at the state license board
5.0 on YelpFrom all seven of our reviews
Free, no obligationYou keep the report either way
Dated photosTaken on your roof, in every report

What we check on a Northridge roof

Some damage from 1994 is easier to see from the attic than from the street.

Framing that moved

In 1994 the ground here shook harder than any city in North America had recorded. We look at rafters, ridge boards and sheathing from the attic side, not just the shingles.

Rebuilt and capped chimneys

Chimneys fell all over the Valley that morning. Where one was rebuilt or taken down to the roofline, the patch around it is often the oldest weak spot on the roof.

Ranch tracts reaching the same age

Whole streets near Cal State Northridge went up in the same few years. When the roofs were replaced together, they tend to wear out together, and the neighbors’ roofs tell us a lot about yours.

Attic: daylight through the roof deck
Attic: daylight through the roof deck. Every report has dated photos like this one, taken in the attic.

Before the rain in Northridge

Older tract roofs, rebuilt chimneys and runoff from the hills to the north. A strong El Niño winter tests all three.

Chimney crickets and flashing

Rebuilt chimneys often have flashing that was never quite right. Water running down the roof hits the chimney first, so that is where a long storm gets in.

Runoff from the north

Streets toward Porter Ranch and Granada Hills sit below the hills, and heavy rain arrives fast. Gutters and downspouts should carry it away from the foundation, not toward it.

Original decking under new shingles

Some roofs here were reshingled over the original boards without a tear-off. Soft decking shows up as sagging or stains on the ceiling after the first big rain.

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 the city requires on a Northridge re-roof

Northridge is a City of Los Angeles neighborhood. LADBS and the LAFD set these rules.

EXPRESS
LADBS

Residential re-roofs here can go through an LADBS express permit. The inspector signs off on the finished roof.

10 PERCENT
Twelve months

Repairs that add up to more than 10 percent of the roof covering within a year mean the whole roof has to meet current code.

COOL ROOF
CRRC

When more than half the roof is replaced, the new covering must be a cool roof product certified by the CRRC.

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

Get my free report

Was your roof checked after the earthquake, or just patched?

A roof patched after 1994 can look sound for decades. A written report with dated photographs shows what was fixed properly and what was only covered over.

1994

the year the Northridge earthquake struck at 4:31 in the morning. Caltech’s earthquake data center calls its ground motion the strongest ever recorded in a North American city.

Materials loaded on the roof for a Long Beach re-roof
Re-roof in Long Beach: materials loaded on the roof.

Roof questions in Northridge

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.

My house survived 1994 fine. Why look at the framing now?

Most homes did come through with little structural damage. But chimneys, ridge lines and roof-to-wall connections took the brunt, and a small crack or a shifted rafter is easy to miss from the street. The report checks from the attic and tells you what it found, good or bad.

Get the framing, flashing and roof age checked.

The report covers framing, chimney flashing, roof age and remaining life in writing. If the roof has years left, it says so.

“Joe was extremely helpful and went above and beyond what a good contractor would do for his customer. … Joe is an honest and trustworthy contractor whom I would hire again for any future project.”

FARRELL F.  ·  YELP
ROOF & INSURANCE REPORTREQUEST FORM

Request your report

Framing, chimney and flashing condition, and remaining roof life, in writing. We call back within 15 minutes: 8am to 5pm Monday to Thursday, 8am to 2pm Friday.

← Back

Got it.

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.
What brings you here?(required)

Rather talk? Call (818) 934-0075.
We call or text you about this request only. Your details are never sold or shared.

Mamos Construction & Design
Northridge  ·  Granada Hills  ·  Porter Ranch  ·  Reseda
☎ Call Schedule a Consultation