Free roof inspection with deck photos before we talk money - GAF and Owens Corning certified installation
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AfterTrusted Roofing Company Nationwide
A roofing company is the contractor you call when your roof leaks, when shingles blow off in a storm, or when you need a full replacement. The right roofing company sends a technician you can identify before they ever set foot on your porch, gives you a written price before the work starts, and backs every repair with a written guarantee that lasts a full 365 days. For a deeper look at what to look for, see The Complete Roofing Company Guide for Los Angeles Homeowners. That’s how Mercer Roofing has operated since 2000, from the first phone call to the final nail.
Most homeowners tell us the same thing: they worry about who is actually coming to their door. At Mercer Roofing, every technician is background-checked, identity-verified, and badged under the Threshold Verified standard. We send each technician’s name and photo to you before the visit, and they present a photo ID at the door. No surprises, no strangers. If you need our Roofing Company in Los Angeles you can actually trust, call us at (743) 200-8347. A live person answers, day or night.
Roofing Contractor
A roofing contractor is a licensed professional who inspects, repairs, installs, and maintains roofs on homes and commercial buildings. You need one the moment you see water stains on a ceiling, find granules in your gutters, or notice shingles lifting after a windstorm. Mercer Roofing provides roofing contractor services nationwide with written pricing before any work begins, and most standard repairs fall between $350 and $850 depending on the extent of the damage.
Replacement and Tear-Off Work
When a roof reaches the end of its useful life, a full tear-off and replacement is the fix. This runs $8,000 to $18,000 for most homes, depending on square footage, roof pitch, and the shingle brand you choose. We use manufacturer-recognized products from Atlas, CertainTeed, and Owens Corning.
Storm and Wind Damage Repair
High winds and hail tear shingles loose and compromise the underlayment beneath. Our crews document every damaged area, show you what we found, and hand you a written price before the first shingle comes off. A modest repair today prevents a $15,000 tear-off in three years.
Roof Inspection
A roof inspection is a systematic examination of your roof’s shingles, flashing, decking, underlayment, and drainage to identify current damage and likely failure points. You need one after heavy storms, before buying or selling a home, and once every one to two years as routine maintenance. Mercer Roofing pairs every inspection with a written condition report and photographs, and our standard roof inspection costs $199 for most homes.
Post-Storm Damage Assessment
After hail or high winds, hidden damage often does not show itself inside the house for weeks. Our post-storm inspection checks for bruised shingles, lifted flashing, and granule loss so you can file an insurance claim while the damage is fresh and documentable. We walk the roof, not just a drone pass from the curb.
Pre-Purchase Roof Evaluation
Buying a home without a roof inspection means buying a problem you cannot see. We assess remaining roof life, estimate replacement cost, and flag any signs of prior leaks around penetrations and valleys. That report gives you real negotiating power before you close.
Commercial Roofing
Commercial roofing covers flat and low-slope roof systems on warehouses, offices, retail buildings, and multi-unit properties, using materials like TPO, EPDM, modified bitumen, and standing-seam metal. You need it when a business roof reaches 15 to 20 years old, after ponding water appears, or when tenants start reporting leaks. Mercer Roofing handles commercial roofing with the same Threshold Verified standard we bring to homes: background-checked crews, written pricing, and no change orders.
Flat and Low-Slope Systems
Flat roofs fail differently than pitched ones. We inspect seams, drain collars, and parapet flashing for the three problems that cause most commercial leaks: open laps, failed pitch pockets, and clogged scuppers. Repairs on commercial systems typically start around $600 and run upward based on the membrane type and damage extent.
Tenant and Property Manager Coordination
We work around your tenants, your loading docks, and your operating hours. Every commercial job gets a written project plan with a schedule, and we send you technician names and photos in advance, the same way we do for homeowners. You know exactly who is on your roof and when.
Metal Roof Installation
Metal roof installation is the process of fitting a standing-seam or exposed-fastener metal roof system over new or existing decking, a job that requires precise panel alignment, proper underlayment, and careful flashing at every penetration. Homeowners choose metal for its 40 to 60 year lifespan and wind resistance, and most full metal roof installations run $16,000 to $32,000 depending on panel profile, roof complexity, and regional material costs.
Standing-Seam Versus Exposed Fastener
Standing-seam panels hide their fasteners and allow the metal to expand and contract freely, which is why they last the longest and leak the least. Exposed-fastener systems cost less upfront but require more maintenance. We quote both so you can compare real numbers, not sales hype.
Re-Roofing Over Existing Shingles
In many cases, metal can be installed over a single layer of existing shingles, saving the cost of a full tear-off. We assess your decking condition first. If the decking is sound and the existing roof is a single layer, we give you the overlay option in writing alongside the conventional tear-off price.
Residential Roofing
Residential roofing is the installation, repair, and maintenance of roof systems on single-family homes, townhomes, and duplexes, using asphalt shingles, metal, or tile. You need it when your roof is past 20 years old, when you see curling or missing shingles, or when an inspection finds compromised decking. Mercer Roofing’s residential roofing services cover everything from a single flashing repair to a complete tear-off and replacement, with full replacements on most homes running between $8,000 and $18,000.
Asphalt Shingle Replacement
Asphalt shingles remain the most common residential roof material for good reason: predictable cost, proven performance, and a wide range of styles. We install Atlas and CertainTeed shingles with proper nail placement, starter strips, and ridge caps so the manufacturer’s warranty is actually valid. Cut corners on installation and the warranty means nothing.
Flashing and Leak Repair
Most residential roof leaks are not shingle failures. They happen at flashing points: chimneys, skylights, vent pipes, and wall intersections. We replace rusted or lifted flashing, reseal penetrations, and verify the repair with a water test. Every residential repair gets Mercer’s 365-Day Done Right Promise in writing, with a free second visit if the repair fails within the year.
Roof Maintenance
Roof maintenance is the scheduled upkeep that extends a roof’s service life and catches small failures before they become leaks, including gutter cleaning, debris removal, caulking and sealant checks, and minor flashing adjustments. You need it annually on most roofs, and twice a year if you have heavy tree cover. Mercer Roofing offers roof maintenance plans starting around $300 per visit, with a written condition report after every service.
Seasonal Tune-Up Visits
Spring and fall visits catch seasonal damage: lifted shingles from winter ice, clogged valleys from fall leaves, and dried-out sealant around pipe collars. A $300 maintenance visit is the cheapest insurance you will ever buy against a $12,000 replacement. Each visit ends with photos and a plain-English summary of what we found.
Gutter and Drainage Resolution
A roof fails fastest when water cannot leave it. Clogged gutters back up under the eaves and rot the fascia and the decking edge. We clean downspouts, verify slope and drainage, and flag any gutter fastening issues we see. This is part of every maintenance visit, not an add-on.
Roof Coating
Roof coating is a fluid-applied membrane, usually silicone, acrylic, or elastomeric, that seals an existing roof surface against water intrusion and reflects heat. You need it when a flat or low-slope roof is aging but not yet failed, when you want to extend its life by 10 to 15 years, or when high cooling bills suggest too much heat absorption. Mercer Roofing applies commercial and residential roof coatings at $2.50 to $4.50 per square foot, including surface prep.
Silicone Coatings for Flat Roofs
Silicone is the standard for flat roofs in rainy and humid climates because it holds up under ponding water where acrylic fails. We prep the surface, repair seams and fasteners, and apply the coating in two passes for the specified mil thickness. A proper silicone coating stops leaks from open seams and can cut cooling cost noticeably on commercial buildings.
Reflective and Energy-Saving Benefits
White and light-reflective coatings reduce roof surface temperature by up to 50 degrees in summer, which lowers the strain on HVAC systems. On warehouses and larger commercial buildings, that is real operating money saved every month. We quote the energy math alongside the coating price so you see the full picture.
Free Roof Estimate
A free roof estimate is a written price for the work you need, prepared after an on-site inspection of your roof, delivered before any work begins and honored without change orders. You need one whenever you are considering any repair or replacement, because a real estimate tells you what is wrong, what it costs to fix, and what can wait. Mercer Roofing provides a free written estimate on every job, no exceptions, and the price you sign is the price you pay.
What the Estimate Includes
Our estimates are line-item documents, not round numbers on a business card. You see the material type and brand, the scope of work, the labor, the disposal fees, and the warranty terms. If we find hidden damage after the tear-off, we stop, show you, and price the change before proceeding.
How to Compare Estimates Honestly
When you compare bids, put them side by side and check three things: material brand, underlayment specification, and warranty length. A $9,000 bid with no name-brand shingle and no written warranty is not cheaper than a $10,500 bid with an Atlas system and a 365-day repair guarantee. We show you the difference in writing.
Brands We Service
Mercer Roofing installs and repairs roofs using manufacturer-recognized shingle systems from GAF, CertainTeed, Owens Corning, IKO, Atlas, and Tamko. We choose brands based on regional performance, warranty strength, and availability, not because a distributor pushed a particular line. When we quote an Atlas system, you get an Atlas system, specified on the estimate by name.
We work most frequently with CertainTeed and Owens Corning shingles for residential replacements, and we have installed hundreds of them across the country. We follow each manufacturer’s installation specifications exactly, because that is what keeps the warranty valid. Whether you have an IKO roof, an Owens Corning roof, or any other make, we can service it.
Signs You Need a Pro Right Now
- Water stains on ceilings or walls. A stain means water has already breached the roof and is traveling through the structure. The leak point is often feet away from the stain, which is why a professional inspection matters.
- Shingle granules in gutters. Asphalt shingles shed granules as they age. If your gutters are filling with granules, the shingles are losing their weatherproofing and the roof is in decline.
- Curling, cracked, or missing shingles. Wind and sun break shingles down over time. When shingles curl or crack, water gets under them and attacks the decking beneath.
- Daylight visible in the attic. If you can see light coming through the roof boards from inside the attic, water can get through the same gaps. This is a structural warning sign, not a cosmetic one.
- Sagging roofline or soft spots. A sagging section or a soft spot when you walk the roof indicates wet, rotting decking. This is a safety issue and a repair that cannot wait.
Our Process, Step by Step
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Call and speak with a person. When you call (743) 200-8347, a live person answers. We ask about the problem, gather basic details, and schedule a visit at a time that works for you.
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Receive your technician’s name and photo. Before the visit, we send you the name and photo of the technician coming to your home. They arrive in a clean, marked uniform and present a photo ID badge at the door. That is the Threshold Verified standard on every single visit.
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Get a written estimate. The technician inspects the roof, documents the findings with photos, and hands you a written, line-item price. No oral quotes. No “trust me” numbers. You sign only if you want the work.
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Work begins with a plan. Once you approve, we schedule the job, protect your landscaping and property, and complete the work according to the written scope. Any unexpected finding gets priced and approved before we touch it.
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Final walkthrough and written guarantee. We walk the job with you, show you the finished work, and hand you the written 365-Day Done Right Promise. If the repair fails within a year, we return free of charge. That is a guarantee in writing, not a handshake.
How Much Does Roofing Company Cost?
A typical roof repair runs $350 to $850, while a full asphalt shingle replacement on a standard home runs $8,000 to $18,000. Metal roof installation lands between $16,000 and $32,000 depending on panel type and roof complexity. A roof inspection is usually $199, and roof coatings run $2.50 to $4.50 per square foot. Those are the ranges homeowners should expect from a reputable roofing company, and anyone quoting dramatically below them is likely cutting something important. Not sure whether to tackle small fixes yourself? Read DIY vs Professional Roofing Company: What’s Safe to Do Yourself before deciding.
What affects the price? Roof pitch, number of stories, existing layers, decking condition, the shingle brand you select, and the accessibility of the roof all move the number. Steep roofs cost more because they are slower and safer to work on. Two layers of existing shingles cost more because they must be torn off. Decking rot costs more because it must be replaced before the new roof goes on.
How do you avoid overpaying? Get three written estimates, compare them by material brand and warranty, and reject any bid without a written warranty. Every Mercer Roofing estimate includes the material brand, the scope, and the 365-Day Done Right Promise in writing. The free estimate is yours with no obligation, and the price we give you is the price you pay if you hire us.
Where We Work
Mercer Roofing serves homeowners and businesses across the United States through local crews that operate under the Threshold Verified standard, including our Roofing Company in Huntington Park. Each Mercer Roofing location is independently owned and operated, part of the Threshold Group family founded in 2000, and held contractually to the same background-check, photo-ID, and written-guarantee requirements wherever you find us. You get local service with a national standard.
Frequently Asked Questions About Roofing Company
A roofing company is a contractor that inspects, repairs, installs, and maintains roofs for homes and commercial buildings. Mercer Roofing has provided these services since 2000 as part of the Threshold Group family. Every location operates under the Threshold Verified standard, which means background-checked, photo-badged technicians on every job.
Most residential roof replacements are completed in one to three days, depending on roof size, pitch, and weather. A full tear-off on a steep or complex roof can extend to four or five days. We schedule the job in writing and communicate with you if weather forces a change.
A full asphalt shingle roof replacement on a typical home runs $8,000 to $18,000, while a metal roof runs $16,000 to $32,000. Your exact cost depends on roof size, pitch, decking condition, and the brand you choose. Call (743) 200-8347 for a free written estimate with real numbers specific to your roof.
Yes. We install and repair roofs using GAF, CertainTeed, Owens Corning, IKO, Atlas, and Tamko systems, and we follow each manufacturer’s installation specifications. That keeps your shingle warranty valid. If your existing roof is a brand we did not install, we can still service and repair it.
A live person answers our phone 24/7 at (743) 200-8347, so you can report a roof emergency the moment you discover it. We will schedule a technician to assess the damage and provide temporary protection if a full repair cannot be completed immediately. You will always know who is coming, with their name and photo sent to you first.
Every repair Mercer Roofing performs includes the 365-Day Done Right Promise in writing. If the repair is not right within one year, we make it right, and a free second visit is included if the repair fails. That guarantee is written, not verbal, and it is included with every job.
You do not need to do much. Clear vehicles from the driveway so our crew can access the property, move any fragile items away from the exterior walls, and keep pets indoors during the visit. We handle the rest, including protecting your landscaping and cleaning up every nail and scrap before we leave.
Schedule Your Roofing Company Service Today
You deserve a roofing company that tells you exactly who is coming to your door and exactly what the work will cost before it starts. Call Mercer Roofing at (743) 200-8347 for a free, no-obligation estimate. A live person answers around the clock, and the price you get in writing is the price you pay.
Written by Grant Whitlock, Owner at Mercer Roofing, serving homeowners nationwide since 2000.