Metal roofing
Architectural shingles
Tile roofing
GAF
Owens Corning
Flat & low-slopeFree roof inspection with deck photos before we talk money - GAF and Owens Corning certified installation
Fast, Reliable Roof Installation Across Winnetka
Roof installation in Winnetka usually runs between $11,000 and $24,000 for a full tear-off and replacement on a typical 1,200 to 1,800 square foot ranch home. That number shifts based on what we find under the old roof, because Winnetka’s 1950s and 60s tract houses frequently hide dry rot in the plywood decking. Our Roof Installation team handles that discovery honestly: we show you photos of the damaged decking before we replace it, and the written price you approved covers exactly what you authorized. Call (341) 217-2677 for a free estimate on your Winnetka roof.
Why Mercer Roofing Co Woodland Hills Is Winnetka’s Preferred Roof Installation Company
Winnetka homeowners call us because we do something most roofers don’t. Before any technician steps onto your property, you get their name and photo sent to you. When they arrive, they’re in a clean, marked uniform and they present a photo ID badge at the door. That’s the Threshold Verified standard we’re held to, and it means the person on your roof is the person you approved. We’ve been doing this since 2000 as part of the Threshold Group family of home-service companies, and every one of our Winnetka jobs starts with this same protocol.
Our reputation in Winnetka rests on what happens after the roof goes on. The 365-Day Done Right Promise means if something isn’t right within a year, we come back and make it right. Every roof installation includes a written guarantee. No verbal assurances, no fine print. Grant Whitlock leads our team with a simple rule: put every price and every promise in writing before a single nail is driven.
Styles & brands we work with
Shingle Roof in Winnetka
A shingle roof in Winnetka is the most common installation we do, running $11,000 to $18,000 on a typical ranch home after tear-off. The job starts with removing every layer of old roofing down to the decking. On Winnetka’s 1950s and 60s homes, that often means pulling off two or three layers of old asphalt shingles, and not infrequently a layer of original wood shake underneath them.
Decking Repair Before Shingles
We inspect every square foot of plywood after tear-off. If we find soft spots from trapped moisture, we replace the damaged sheets and show you exactly what we found before proceeding. You never pay for decking you didn’t authorize. The written estimate you approve is the price you pay.
Title 24 Cool Roof Compliance
Los Angeles County requires cool roof materials on most full replacements. In Winnetka’s hot, dry summers, a reflective shingle can keep your attic 20 to 30 degrees cooler, which means a lot when August temperatures push past 100°F. We install GAF, CertainTeed, and Owens Corning cool roof shingles that meet Title 24 without forcing you into a color you hate.
Standing Seam Metal Roof in Winnetka
A standing seam metal roof in Winnetka typically runs $24,000 to $42,000 on a ranch home. It’s the right choice for homeowners who never want to think about their roof again. The panels lock together vertically with concealed fasteners, so there are no exposed screws to back out during Winnetka’s thermal swings from hot days to cool nights.
Why Metal Holds Up to UV Exposure
Winnetka’s intense sun degrades asphalt shingle surfaces faster than in coastal areas. Standing seam metal doesn’t have granules to lose. A properly specified metal roof with hot-dip galvanized or stainless clips and fasteners resists corrosion and UV breakdown for decades. We specify stainless fasteners here, not the inland-spec zinc-coated ones, because the price difference is small and the corrosion resistance is significant.
When Metal Makes Sense on a 1950s Ranch
Original wood shake roofs on these tract homes were never designed to carry much weight. Standing seam metal is lighter than shingles and doesn’t require a second layer of roof. That matters when you’re dealing with 60-year-old framing that’s already carrying three layers of old roofing.
Trusted Brands We Service in Winnetka
We install and repair shingle systems from GAF, CertainTeed, Owens Corning, IKO, Atlas, Tamko, and Boral. For Winnetka customers, we commonly recommend GAF Timberline HDZ for cool roof compliance and CertainTeed Landmark Solaris for strong reflective performance. We stock common ridge vent, flashing, and underlayment components so we don’t lose a day waiting on a supplier when we discover hidden decking damage mid-tear-off. Your roof gets done on schedule because we planned for what Winnetka roofs actually look like under the surface.
Common Roof Installation Problems We See in Winnetka Homes
- Hidden dry rot under layered re-roofs. Many Winnetka homes still have original wood shakes under two or three layers of asphalt. Water gets trapped between layers, and by the time we tear off, the plywood decking underneath is soft. We find this on roughly half of the 1950s and 60s ranch roofs we open up.
- Premature granule loss from intense UV exposure. Winnetka’s hot, dry summers bake asphalt shingles. Granules start washing into gutters years before the shingle actually fails. We see roofs that are only 12 years old with bald spots along the south and west exposures.
- Lifted flashing around chimneys and plumbing penetrations. Thermal expansion and contraction from wide daily temperature swings works flashing loose. The nails pull, the sealant cracks, and water gets in slowly enough that you won’t see stains until winter rains arrive.
- Inadequate attic ventilation. Most original Winnetka ranch roofs were built with minimal venting. When we do a full installation, we add ridge venting and check soffit airflow. A properly vented attic in Winnetka can drop from 140°F to under 90°F, which extends the life of the new roof and cuts cooling costs.
See the difference
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AfterPricing for Roof Installation in Winnetka, CA
For a full tear-off and shingle roof installation on a typical 1,200 to 1,800 square foot Winnetka ranch, expect to pay $11,000 to $18,000. A standing seam metal roof on the same home runs $24,000 to $42,000. The biggest variable in Winnetka is decking replacement. If we find dry rot, replacement plywood runs $4 to $7 per square foot, and a typical ranch might need 6 to 12 sheets replaced. That’s $700 to $2,500 added to the job, which is why we price decking separately and show you what we find before you approve anything. The coastal-spec hardware we use, stainless fasteners and high-temperature ice and water shield, adds about $400 to $800 over inland-spec materials. It’s a small price for a roof that won’t corrode or leak at the eaves. Call (341) 217-2677 for a free estimate with a written line-item price.
We Also Serve Cities Near Winnetka
Our crew serves Winnetka and the surrounding communities of Canoga Park, Reseda, Tarzana, and West Hills. If you live near the border of any of these areas, your home has the same 1950s and 60s tract housing and faces the same Title 24 requirements. We’re scheduling roof installations across the western San Fernando Valley this season.
Serving Winnetka, CA - Our Local Coverage Area
We’re based in the Winnetka 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 Winnetka
Winnetka’s original 1950s and 60s ranch homes were built with wood shake roofs, and subsequent owners often re-roofed over them instead of tearing off. Layers trap moisture, moisture sits against the plywood decking, and decades of trapped humidity rot the wood from the top down. When we pull the layers off, the rot is visible. It’s not a defect in your home; it’s what happens when a roof system outlives its design life. We show you the damage and price the repair before installing anything new. Call (341) 217-2677 for an exact quote.
Yes. Los Angeles County’s Title 24 energy code requires cool roof materials on most full roof replacements. For Winnetka’s hot summers, the reflective shingle or metal surface also means a cooler attic and lower cooling bills. We install Title 24 compliant systems from GAF, CertainTeed, and Owens Corning that pass inspection the first time. Estimates are free.
Inland-spec installation uses zinc-coated fasteners and standard underlayment, which corrode faster in Winnetka’s intense sun and thermal cycling. Coastal-spec means stainless steel fasteners, hot-dip galvanized flashing, and high-temperature ice and water shield at the eaves. The coastal-spec version adds about $400 to $800 on a typical ranch roof. The inland-spec version saves that money now but fails earlier; we’ve seen flashing nails rust through in under a decade. We specify the coastal-spec hardware because it’s the cheaper roof over 20 years. Call (341) 217-2677 and we’ll walk you through both options in writing.
A typical Winnetka ranch roof runs 12 to 18 squares, or 1,200 to 1,800 square feet of roof area. The number of squares determines the shingle quantity, tear-off labor, and the number of decking sheets we may need to replace. It matters because roofing is priced per square; a 14-square roof at $700 per square is $9,800 in materials and labor before any decking repair. Knowing your square count helps you compare quotes fairly. Call (341) 217-2677 for a free measurement and written estimate.
Likely yes, at least partially. When original wood shakes stay in place under later re-roofs, trapped moisture rots the plywood decking above or around them. We won’t know the extent until we tear off. In a job off Oso Avenue, our crew pulled three layers of old shingles off a 1958 ranch and found the decking so soft that a screwdriver sank in by hand. We replaced 11 sheets of plywood, then installed a full GAF Timberline HDZ system with high-temp ice and water shield at the eaves and a new ridge vent. The attic dropped from 140°F to under 90°F and Title 24 inspection passed on the first try. You’ll know exactly what you’re paying for before we install anything. Call (341) 217-2677 to schedule your free estimate.
Schedule Your Free Roof Installation Estimate in Winnetka
You’ll get a written line-item price before any work starts. Your technician’s name and photo arrive before they do. They badge in at the door with photo ID, and every roof we install carries a 365-day written guarantee. Call (341) 217-2677 now; a live person answers, 24/7, not a voicemail.
Written by Grant Whitlock, Owner at Mercer Roofing Co Woodland Hills, serving Winnetka since 2000.