Metal roofing
Architectural shingles
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Flat & low-slopeFree roof inspection with deck photos before we talk money - GAF and Owens Corning certified installation
Fast, Reliable Roof Installation Across West Los Angeles
A full roof installation on a West Los Angeles home generally runs between $14,000 and $38,000 depending on the roofing system, the condition of the decking beneath it, and what the existing structure can carry. Most tear-offs and replacements on single-family homes here take five to nine working days once materials are on site. Call (213) 521-8272 and we will send a technician who arrives with a photo ID badge, a written quote, and the specific experience this part of LA requires.
Homes in West Los Angeles are not like the newer builds further inland. We work on 1920s Spanish Colonials with original clay tile, mid-century low-slope roofs, and postwar bungalows with decades of patchwork repairs. That mix means the person pricing your roof has to understand what is actually under the surface before any number goes in writing. We do. Grant Whitlock leads our West LA roofing work, and every project starts the same way: an inspection, then a written price, then your approval. Nothing gets touched until you have all three.
Why Mercer Roofing Co Los Angeles Is West Los Angeles’s Preferred Roof Installation Company
West Los Angeles homeowners keep calling us for one reason above the rest: we tell you who is coming to your door before they knock. Every Mercer technician is background-checked, identity-verified, and arrives in a clean, marked uniform wearing a photo ID badge. We send the technician’s name and photo to you ahead of the visit. That is the Threshold Verified standard, and it is not a courtesy – it is contractual. Every independently owned Mercer location in the Threshold Group family, founded in 2000, is held to it.
Roofing work here commonly means matching an addition to original rooflines, flashing transitions between flat and pitched sections, and preserving street-facing character while bringing the roof up to current code. Our West LA customers include homeowners near Sawtelle, Rancho Park, and the neighborhoods off Olympic and Santa Monica Boulevard who are juggling permits, HOA requirements, and aging framing. We coordinate the whole install from the brand’s Los Angeles office, and crews serving West Los Angeles are dispatched locally.
Every job includes a written price before any work starts, and every repair carries a written guarantee. If a repair fails within 365 days, we come back on our second visit – free. That is the 365-Day Done Right Promise, in writing, on every job we leave behind.
Styles & brands we work with
Tile Roof in West Los Angeles
Tile roof work in West Los Angeles is not the same job as tile roof work in a 2005 development. Here, most of the tile roofs in question are original 1920s or 1930s installations, and the tile itself often outlasts the material underneath it by decades. A clay tile roof in West Los Angeles typically needs a full lift, underlayment replacement, and re-set at a cost between $22,000 and $42,000 on a typical single-family home. The tile is often reusable. What is not reusable is what matters most.
What a tile lift-up inspection actually shows
In West LA’s older Spanish-style neighborhoods, original clay tile roofs frequently look intact from the street while the underlayment beneath them has disintegrated. We have walked homes in the vicinity of Cheviot Hills where every visible tile was sound and the decking below was soaked. The failure is invisible until a tile is lifted or the first heavy winter rain finds the rotted wood.
Seismic and structural checks during a tile re-set
Older West Los Angeles framing was not always sized for modern tile weight plus current code loads. When we re-set clay tile, we check the rafter spacing, the condition of the decking, and whether the roof plane needs seismic strapping before the tile goes back on. That work is priced in writing before we start, not discovered by surprise after the tiles are off.
Roof Ventilation in West Los Angeles
Roof ventilation on a West Los Angeles home matters more than most people realize, because the coastal Mediterranean climate means long dry spells followed by sudden winter rain. A properly vented attic assembly, typically configured with ridge and soffit vents balanced to the roof’s square footage, runs between $900 and $3,200 as part of a new roof installation. Underventilated attics here trap heat and moisture, accelerate decking rot, and shorten the life of any new shingle or tile you install.
Ventilation matched to older roof geometry
Many 1920s and 1930s West LA homes have low-slope or flat sections where standard ridge venting is not possible. Those sections need a different approach: powered or passive box vents, edge venting, or a combination that matches the existing roofline. We design the ventilation to the roof you actually have, not to a stock diagram.
Santa Ana winds and wind-driven rain
Santa Ana winds push rain sideways into ridge and gable vents that are not baffled correctly. During a new roof install in West Los Angeles, we verify that any new ventilation detail is rated for wind-driven rain exposure. A vent that works fine in a calm inland neighborhood can be a recurring leak source here.
Trusted Brands We Service in West Los Angeles
We install and repair roofing systems from GAF, CertainTeed, Owens Corning, IKO, Atlas, Tamko, and Boral. For West Los Angeles customers we commonly recommend GAF architectural shingles for steep-slope replacements, Atlas for wind-rated options suited to Santa Ana exposure, and Boral or original clay tile for Spanish-style character preservation. Because our crews serve West LA daily, the materials for your job are staged close by – meaning fewer delays between tear-off and dry-in. When it comes to Roof Installation, the brand matters less than the installation standard under it, and ours is written into every contract.
See the difference
Before
After
Before
After
Before
AfterCommon Roof Installation Problems We See in West Los Angeles Homes
- Clay tile hiding failed underlayment. Intact tiles trap moisture against rotted decking, and the first sign is often a ceiling stain that appears after the first heavy winter rain – not a broken tile on the roof itself.
- Undersized 1920s framing under modern tile weight. Original rafter spacing was not engineered for current code loads, which leads to sagging, cracked tiles, and ponding water on low-slope roofs.
- Failed pipe boot and penetration flashing. Original vents and skylights on older West LA homes often have flashing that degrades quietly, letting water seep into the attic long before any shingle damage is visible from outside.
- No drip edge on flat roof edges. 1930s construction frequently skipped drip edge entirely, so roof runoff wicks into fascia and soffit boards – a common source of eaves rot we see across West Los Angeles.
Pricing for Roof Installation in West Los Angeles, CA
Here is what we tell West Los Angeles homeowners to budget. A full tear-off and composition shingle roof on a standard single-family home in West Los Angeles runs $14,000 to $28,000. A clay tile lift, underlayment replacement, and re-set runs $22,000 to $42,000. Flat or low-slope built-up or modified bitumen roofs run $12,000 to $26,000. Roof ventilation work added to a new install runs $900 to $3,200. The biggest variables are decking replacement, structural repair uncovered during tear-off, and whether the existing roof has multiple layers that need removal. We write those allowances into your contract at the start, so a discovery does not become a change order you did not agree to. Call (213) 521-8272 for a free estimate – it is a written line-item quote, and it is yours to keep regardless of whether you hire us.
We Also Serve Cities Near West Los Angeles
Our crews regularly work across West Los Angeles and into the surrounding areas, including Los Angeles, Burbank, South Gate, and Lynwood. If you are in one of those cities and need the same written-price, photo-badged service, call us and we will get you scheduled.
Serving West Los Angeles, CA - Our Local Coverage Area
We’re based in the West Los Angeles area and know this community well. Use the map below to see our service coverage - if you’re nearby, we can almost certainly help.
FAQs About Roof Installation in West Los Angeles
You cannot tell from the ground, and neither can most roofers – the tell is under the tile. We perform a lift-up inspection on a small section of roof, usually near a valley or penetration, to check the condition of the underlayment and decking before we quote an underlayment replacement. In West Los Angeles, the original 1920s underlayment on Spanish-style homes is often reduced to brittle fragments while the tile above looks pristine. For a definitive answer, call (213) 521-8272 and ask for a tile lift-up inspection – estimates are free.
It can, and we tell you that before we open anything. When a roof plane is torn off, the city inspector can require strapping, rafter stiffening, or decking replacement if the exposed structure does not meet current code. That is the single biggest reason a West Los Angeles roof quote moves. We handle it by writing structural allowances into the contract at the start, and any required work beyond the allowance is priced and approved in writing before we touch it. Call (213) 521-8272 to get the inspection and allowance structure in writing for your specific roof.
Ponding water is a slope and drainage issue, usually from sagging 1920s or 1930s framing combined with a low-slope design that was never intended for modern waterproofing. A new roof can correct the slope with tapered insulation or a light concrete or panel overlay, raising the low spots so water drains. We have fixed ponding on flat West LA roofs without changing the home’s curb profile – the correction is in the decking and insulation, not the top surface. Call (213) 521-8272 for an exact quote; estimates are free.
Ask for the shingle’s ASTM wind rating and whether the installation method matches the rating. In West Los Angeles, Santa Ana wind gusts regularly exceed 60 mph, so a shingle rated for 90 mph or 110 mph makes a practical difference, but only if the fastening pattern and underlayment match the manufacturer’s high-wind detail. We commonly recommend Atlas and GAF high-wind lines for West LA homes and show you the rating in the written quote. Call (213) 521-8272 and we will walk you through the options for your roof size and pitch.
Homes built in the 1920s through the 1940s were rarely built with continuous soffit venting or any real attic ventilation plan, so a new roof on a West LA original often needs ventilation designed from scratch. That means adding soffit intake vents, balancing them with ridge or powered exhaust, and working around the original roofline. We design ventilation to the attic’s actual air volume and the roof’s geometry, not to a one-size rule. Call (213) 521-8272 and we will calculate what your specific roof needs as part of the quote.
On a 1928 Spanish Colonial on Kelton Ave, our crew lifted intact clay tiles to find the original 1920s underlayment reduced to paper-thin fragments, leaving rows of bare decking open to winter rain. We replaced decking around two valleys, installed a full ice and water shield under the tile, and upgraded the ridge vent system to handle Santa Ana wind-driven rain – all without altering the home’s exterior character. That is the job we do in West Los Angeles: open it up, find what is actually failing, and fix it in writing before you pay a dollar.
Written by Grant Whitlock, Owner at Mercer Roofing Co Los Angeles, serving West Los Angeles since 2000.