Roof Replacement in Los Angeles
Shingle, tile, metal and flat roof replacement across Los Angeles, Orange and Ventura counties, licensed C-39 & General B #1073368.
Power Roofing handles roof replacement in Los Angeles and across Los Angeles, Orange and Ventura counties: asphalt shingle, tile, metal and flat roofs on homes and commercial buildings, from tear-off to final inspection. It starts with a free roof inspection, and you get a written estimate with the scope, materials, timeline and price before any work begins.
We are licensed for roofing and general building (License: C-39 & General B #1073368), bonded and insured, with offices in Los Angeles, Sherman Oaks and Irvine serving the three counties. Call Power Roofing at (424) 380-5776 to schedule your roof inspection in Los Angeles, CA, or request a free estimate online.
Selected roof replacements across Los Angeles, Orange and Ventura counties
Signs it is time to replace your roof, not repair it
A repair fixes a spot. A replacement makes sense when the problems are spread across the roof, or when every repair buys less time than the last one. These are the signs we look for during an inspection:
- Shingles curled, cracked or missing in many areas, or shingle granules collecting at downspouts.
- Leaks in more than one room, or a leak that comes back after it was repaired.
- Soft or sagging areas, which usually mean the deck under the roofing is wet or damaged.
- Flashing failing in several places: chimneys, vents, skylights and roof-to-wall joints.
- Mold, moisture or rot in the attic, or daylight through the roof boards.
- Rising energy bills caused by poor roof performance.
- Storm, wind or sun damage across whole slopes rather than one corner.
- An asphalt shingle roof 20 years old or older that shows the wear above.
One or two of these in a small area usually calls for a repair, and our roof repair service is the place to start. If you are unsure, the inspection settles it: we check the roofing, flashing, underlayment, ventilation, drainage and decking, then tell you plainly which option is the better use of your money.
What a replacement gives back: a professionally installed roof helps protect your property from leaks, moisture damage, wind, sun exposure, and structural deterioration. A new roof can increase buyer confidence and make your property more attractive if you plan to sell in the future. Modern roofing materials and proper ventilation can help reduce heat transfer, improve indoor comfort, and support better energy performance. If your current roof requires constant repairs, a full replacement can save you from repeated service calls and ongoing roofing problems.
What drives the cost of a roof replacement in Los Angeles?
The cost of a roof replacement in Los Angeles comes down to six things: the roof’s size and shape, how many old layers come off, the condition of the deck underneath, the material, what the building code requires for your home, and how hard the roof is to reach. Two houses on the same street can differ on every one of these, so we price each roof after inspecting it instead of quoting from a list.
| Cost driver | Why it moves the price | What to check in an estimate |
|---|---|---|
| Size and shape | Roofs are measured in squares (one square is 100 square feet), and City of Los Angeles reroof permits state the job size in squares. Hips, valleys, dormers and skylights add cutting and flashing. | The number of squares and the roof features counted. |
| Tear-off | Every existing layer adds labor and disposal. The state energy code treats a new layer laid over the old roof as a replacement too, so an overlay does not skip the cool-roof rules. | How many layers are on the roof, and whether tear-off and haul-away are included. |
| Deck condition | Rotted boards only show once the old roof is off. Los Angeles reroof permits say whether the roof goes over existing or new solid sheathing. | How deck repairs are priced if needed, in writing before work starts. |
| Material | Shingle, tile, metal and flat membranes differ in material and labor, and so do product lines within each. | The exact product, color and underlayment; a line that only says “shingles” is not enough. |
| Code requirements | Cool-rated roofing when more than half of a home’s roof is replaced, in the climate zones where the state energy code requires it; a Class A covering inside a Very High Fire Hazard Severity Zone, and on low-slope roofs, high reflectance and sometimes added insulation. | Which code items apply to your address. |
| Access | Height, pitch, stories, tight side yards and rooftop equipment change how long tear-off and installation take. | How the property is protected and what cleanup includes. |
If you are comparing bids, line them up by these rows: a lower price that leaves out tear-off, deck repairs or the cool-roof product is not the same job.
Which roofing material fits a Los Angeles home?
Replacements here use four main roof types. The right one depends on the roof’s pitch, the style of the house, the weight the structure can carry, and how long you plan to stay.
| Roof type | Where it fits | Life and warranty as we state them | Trade-offs |
|---|---|---|---|
| Asphalt (composition) shingle | Most pitched-roof homes; many colors and styles | Premium Composition Shingles – 50 Year Warranty; standard asphalt 15-25 years | Cost-effective and versatile; sun and heat age it quickly on exposed slopes |
| Tile and slate | Spanish, Mediterranean and other tile-roofed homes | Premium Tile & Slate – 100+ Year Lifespan – Fire Resistant | Heavy; the underlayment under the tiles wears out long before the tiles |
| Metal (standing seam, metal shingle, metal tile) | Modern and coastal homes, owners staying long term | 50-100+ years lifespan vs 15-25 years for asphalt | Needs crews trained on metal panels and trim details |
| Flat and low-slope (built-up, TPO, modified bitumen) | Flat-roof homes, additions, garages, commercial buildings | Depends on the membrane and on drainage | Ponding water is the main enemy; the code sets reflectance on a reroof |
Asphalt shingle roof replacement
A proper shingle replacement is more than new shingles: tear-off to the deck, sheathing repairs, new underlayment, drip edge, valley and wall flashing, starter rows, field shingles, and ridge with the attic ventilation the roof needs. Skipped flashing or ventilation is how a new shingle roof starts leaking or aging early.
How long shingles last in the Southern California sun depends on the product line, the slope’s exposure and how well the attic breathes: heat trapped under the deck bakes shingles from below while UV dries them from above. Premium composition shingles carry a 50 Year Warranty; ask the manufacturer what that warranty covers and how its value changes over time.
Tile roof replacement
The tiles shed most of the water, but the underlayment beneath them is the real waterproof layer, and it is often what fails. When the tiles are sound, a tile replacement can be a remove, new underlayment and reset job: tiles come off and are stacked, underlayment and flashing are replaced, and the tiles go back with broken ones swapped for matches. City of Los Angeles permit records list our tile reroofs under exactly that description.
Metal roof replacement
Metal suits owners who want a roof measured in decades and lower cooling bills; we state the benefit as a 20-30% reduction in cooling costs. Standing seam panels carry a 50+ Year Lifespan (one installation vs 2-3 replacements with traditional roofing), and we’ve installed hundreds of metal roofing systems throughout Los Angeles County, Orange County, and Ventura County. Homes with metal roofing often appraise higher. Our metal roofing page compares standing seam, metal shingle and metal tile.
On our metal roofing page we state: resists wind, hail, and extreme weather; watertight standing seam systems; no rot, mold, or splitting like wood; recyclable and reduces landfill waste; 50+ Years of Protection. Standing seam metal roofing represents the pinnacle of modern metal roofing technology. Aluminum is lightweight, corrosion-resistant, ideal for coastal properties; steel is strong, durable, and cost-effective for most applications; copper is a premium material with distinctive character and natural patina; zinc offers premium durability with sophisticated appearance over time.
Flat and low-slope roof replacement
A flat roof is replaced when the membrane has blistered, split at the seams or held ponding water long enough to soak the layers below. The new system has to drain, so low spots, drains and scuppers are checked and corrected before the membrane goes down.
For a single-family home where more than half of a low-slope roof is replaced, California’s 2025 Energy Code asks for an aged solar reflectance of at least 0.63 in climate zones 4 and 6 through 15 (or an insulation trade-off), and in several zones for added roof insulation. A flat roof on a new addition is a different job, covered on our new roof installation page.
Our Metal Roofing Services
Premium
Standing Seam Metal Roofing
Standing seam metal roofing represents the pinnacle of modern metal roofing technology. Vertical metal panels with raised seams create contemporary aesthetics with superior weather resistance.
- Contemporary Design
- Superior Weather Resistance
- 50+ Year Lifespan
Metal Shingle Roofing
- Traditional Aesthetics
- Metal Durability
- Multiple Style Options
Premium
Premium
Metal Tile Roofing
- Mediterranean Style
- Lightweight Design
- Premium Aesthetics
Metal Roofing Materials and Options
Aluminum
Lightweight, corrosion-resistant, ideal for coastal properties
Steel
Strong, durable, and cost-effective for most applications
Copper
Premium material with distinctive character and natural patina
Zinc
Premium durability with sophisticated appearance over time
Why Metal Roofing What Is Metal Roofing? Understanding the Benefits
Longevity
50-100+ years lifespan vs 15-25 years for asphalt
Energy Efficiency
20-30% reduction in cooling costs
Durability
Resists wind, hail, and extreme weather
Weather Resistance
Watertight standing seam systems
Low Maintenance
No rot, mold, or splitting like wood
Eco-Friendly
Recyclable and reduces landfill waste
Why Choose Roof Replacement? The Long-Term Value
50-Year Lifespan
One installation vs 2-3 replacements with traditional roofing
Energy Savings
20-30% reduction in cooling costs accumulates over decades
Property Value
Homes with metal roofing often appraise higher
Insurance Benefits
Some insurers offer discounts for metal roofing
50+
Years of Protection
Do you need a permit to replace a roof in Los Angeles?
Yes. Under the California Building Standards Code, a building may not be altered or repaired until a permit is obtained from the local building official, and the rules vary by city and county. In the City of Los Angeles, reroof permits come from the Department of Building and Safety; elsewhere from that city’s building department, or the county in unincorporated areas.
A current City of Los Angeles reroof permit spells out what to know before you choose a material:
- A Class A roof covering is required inside a Very High Fire Hazard Severity Zone.
- When more than 50% of a home’s roof is replaced, the roofing must be a cool roof product labeled and certified by the Cool Roof Rating Council (CRRC).
- The permit records the roof covering, the deck it goes over and the size in squares.
The cool-roof rule comes from the state energy code (Title 24, Part 6, Section 150.2): for single-family homes it covers steep-slope roofs in climate zones 4 and 8 through 15 and low-slope roofs in zones 4 and 6 through 15, with exceptions such as very heavy roof constructions. The Energy Commission’s climate zone tool looks the zone up by address, and we check it during the estimate. Composition shingle, built-up flat and tile reroofs under our license, #1073368, appear in the City of Los Angeles’ public permit records, the closed ones marked “Permit Finaled”.
How a roof replacement works, step by step
- Free roof inspection of the roofing, flashing, underlayment, ventilation, drainage and visible decking.
- Written estimate with the scope of work, recommended materials, project timeline and pricing.
- Material and color, chosen from cool-rated lines where the code requires them.
- Permit from your city’s building department.
- Protection and tear-off: the property around the house is protected and the old roofing comes off down to the deck.
- Deck repair, so the new roof has a sound base.
- Underlayment, flashing and ventilation at edges, valleys, walls and penetrations.
- New roof covering, installed to the manufacturer’s instructions. Our certified roofers execute the work with precision and minimal disruption.
- Inspection and cleanup: the city inspects as the permit requires, we do our own final quality check, and the site is cleaned.
- Warranty documents. We provide detailed warranty documentation at project completion.
How long does a roof replacement take?
Residential roof replacement typically takes 2-5 days depending on roof size, material type, and substrate condition. Layers to remove, deck repairs the tear-off reveals, weather and the city’s inspection schedule also play a part, and your written estimate states the timeline for your roof.
Getting the house ready
Move cars out of the driveway, take fragile items off top-floor walls and shelves (tear-off shakes the framing), cover anything stored in the attic, and keep pets inside. Tell us about solar wiring, sprinklers or anything else on or near the roof before the crew arrives.
Storm damage and insurance claims
Many policies cover storm damage, hail damage, and similar causes. Damage from poor maintenance typically isn’t covered. Review your policy for specifics. After a storm, photograph the damage, protect the inside from more water, and call your insurer before permanent work begins.
Can you work with my insurance company? Yes. We provide detailed damage documentation and work with insurance companies on claims. If you are choosing a new material anyway, some insurers offer discounts for metal roofing; ask your agent before you decide.
What warranty comes with a new roof?
All our roofing work carries warranty protection. We warrant our installation craftsmanship against defects. We coordinate with manufacturers on product warranties. Specific terms vary by service type. We provide detailed warranty documentation at project completion.
So a new roof has two warranties: ours on the workmanship and the manufacturer’s on the product. Keep both with the house papers. After that, a yearly look and prompt small repairs keep the roof performing; our roof maintenance service covers it.
Questions to ask any roofing contractor before you sign
- Is the contractor licensed for roofing? The Contractors State License Board lets you check any license online and points roofing-only jobs to a specialty contractor. Ours: C-39 & General B #1073368.
- Are they insured? We maintain comprehensive liability insurance and workers’ compensation coverage.
- Who pulls the permit, and which inspections will the city do?
- Tear-off or overlay, and how are deck repairs priced if the tear-off uncovers damage?
- Which exact product, and is it cool-rated where the code requires it?
- What warranty documents will I receive, and is cleanup included?
What should a roof replacement estimate include?
A written scope you can compare line by line: the roof size in squares, how many layers come off and whether haul-away is included, the exact shingle, tile, metal or membrane product and the underlayment, the flashing and ventilation work, who pulls the permit, the timeline, cleanup, the warranty documents and the price.
Before any work starts, a California home improvement job over $500 needs a written contract signed by you and the contractor, and you receive a copy signed and dated by both. It names the contractor with business address and license number, the contract price, a description of the work and the significant materials, and the approximate start and completion dates (Business and Professions Code section 7159).
Decking is the line to settle before you sign. Rotted sheathing usually shows only once the old roof is off, so ask how deck repairs found during the tear-off will be priced and have that written into the estimate. Extra work found later becomes part of the contract only through a written change order, signed before that work starts, that states the added scope, its cost and how it changes the payment schedule.
How do I spot a bad roofer or a storm scam?
Check the license, keep your payments behind the work, and never sign under pressure at the door. California’s contractor and insurance regulators point to these checks:
- The license. Look the number up on the Contractors State License Board site: it shows whether the license is active and whether a bond and workers’ compensation insurance are on file.
- The down payment. On a home improvement contract it may not exceed $1,000 or 10 percent of the contract price, whichever is less, and later payments may not get ahead of the work done and materials delivered (Business and Professions Code section 7159.5; a contractor who has posted a performance and payment bond approved by the License Board is the exception).
- Door-to-door warning signs. An unrealistically low estimate, a refusal to leave the contract with you overnight, or a pitch that plays on your emotions.
- Your right to cancel. A home improvement contract made anywhere other than the contractor’s place of business, such as at your kitchen table, can generally be cancelled until midnight of the third business day after you receive a signed and dated copy, or the fifth business day if you are 65 or older. You cancel by written notice to the address or email named in the contract (Civil Code sections 1689.5 and 1689.6); repair contracts signed after a declared disaster get longer protection under the same law.
If storm damage is behind the bids, settle the insurance side first: our roof repair page lists the steps for a roof insurance claim after wind damage, and our page on storm damage and insurance-claim roofs in Simi Valley covers a Ventura County storm job.
Roof replacement questions from Los Angeles homeowners
How much does a roof replacement cost in Los Angeles?
There is no honest single number: the price depends on the roof’s size in squares, the layers to remove, deck repairs, the material and the code items for your address. The free inspection gives you a written estimate with each one spelled out.
What is the process for a shingle replacement on a house in Los Angeles?
Inspection and written estimate, a permit from your city, tear-off to the deck, deck repairs, new underlayment and flashing, cool-rated shingles where the code requires them, inspection, cleanup and warranty documents.
Is a roof replacement the same as a new roof installation?
No. A replacement removes an existing roof and builds a new one in its place; a new roof installation covers new construction and additions where there was no roof before.
Do you replace commercial roofs?
Yes: offices, retail buildings, apartment complexes, warehouses and other commercial properties, including flat membrane systems.
Which areas do you cover?
Throughout Los Angeles, Orange and Ventura counties, from our offices in Los Angeles, Sherman Oaks and Irvine. Browse our recent projects to see replacements near you.
Can new shingles go over the old roof?
Sometimes, but not on every roof. The 2025 California Residential Code (section R908.4), which your city or county permit office applies, allows a new covering over an existing one when it is installed to the manufacturer’s approved instructions, and does not allow it when the existing roof is water-soaked or too deteriorated to serve as a base, when it is slate, clay, cement or asbestos-cement tile, or when the roof already has two or more layers.
Two cases work differently. A standing seam metal system that carries its own load to the structure does not need the old roofing removed, and metal or tile over old wood shakes needs the shakes covered with gypsum board or another approved layer where a hidden combustible space would be created.
A recover still counts as a replacement under the energy code (see the cost table above), and only a tear-off shows the condition of the deck.
Should a 20-year-old shingle roof be repaired or replaced?
Age alone does not decide it. Standard asphalt shingles last 15-25 years, so a 20-year-old roof is late in that range: replace it when the wear is spread across the roof, as in the signs listed at the top of this page, and repair it when the damage sits in one area and the rest is sound. A free roof inspection settles which one applies. In Ventura County, our page on when a repair is enough on a Thousand Oaks roof covers what fails first on roofs there.
What homeowners say about their new roofs
Read the full review →“I have a very small job that requires the repair of an area of fascia board and a non-functioning bracket. The person who came out was very professional and transparent.”
Read the full review →“Cannot say enough GREAT things about Power Roofing. Customer service has been top notch since the moment we met for an estimate all the way through the end of the project.”
Read the full review →“It was wonderful working with Israel. He was punctual, explained the process very well and answered all of my questions.”
Read the full review →“This company is very good and highly recommended. I had two leaks on my flat surfaced roof which required an entire tear down and replace. The did everything in two days. They were punctual and honest with their work.”
Read the full review →“I’m so glad to have chosen Power Roofing for our roof replacement project! From start to finish, I was updated all along the way and never in doubt about what was going to happen.”
Read the full review →“A million thanks to Israel and the Power Roofing team for the awesome re-roofing job. They had it done in a day and a half!”
Get a free roof replacement inspection
Tell us about your roof and we will schedule a free inspection, explain what we find and give you a written estimate. Call (424) 380-5776 or send your project details; we respond quickly to all inquiries, typically within 24 hours or less.