Free roof inspection with deck photos before we talk money - GAF and Owens Corning certified installation
Before
After
Before
After
Before
AfterFast, Reliable Roof Installation Across Woodland Hills
A new roof in Woodland Hills typically runs $11,500 to $24,000 for a standard shingle system on a 1,800 to 2,400 square foot home, and $16,000 to $31,000 for TPO on the flat or low-slope sections we see throughout the Valley. Those are real numbers from real bids in this market, not national averages. Mercer Roofing has installed and replaced roofs across Woodland Hills for years, from the ranch homes off Ventura Boulevard to the hillside properties climbing toward Topanga. Call (743) 200-8347 and we’ll give you a written line-item price before a single nail gets driven.
This page is written for Woodland Hills homeowners specifically, because your roof is dealing with conditions that don’t exist in Sherman Oaks or Encino. The heat is hotter. The wind is meaner. And the fire code is different, sometimes block by block. We’ll explain all of that below, in plain English, with real numbers.
Why Mercer Roofing Is Woodland Hills’s Preferred Roof Installation Company
Mercer Roofing is part of the Threshold Group family, founded in 2000, and every one of our technicians arrives at your Woodland Hills door the same way: background-checked, identity-verified, in a clean marked uniform, holding a photo ID badge. Before the visit, we send you the tech’s name and photo. You know exactly who is walking up your driveway before they ring the bell. That’s the Threshold Standard, and no other roofing company in the Valley does it this way.
Woodland Hills homeowners deal with specific failure patterns that out-of-area contractors misdiagnose regularly. Cracked tile beds from 100°F-plus thermal cycling. Ridge caps lifted by Santa Ana gusts funneling through the Santa Susana Pass. Ember-resistant underlayment requirements that only apply on the hillside side of the VHFHSZ boundary. Our crews work these streets every week, so we don’t learn these quirks on your dime. Grant Whitlock leads the team, and he’s built the company around a simple rule: every roof gets a written guarantee, and every price gets written down before work starts.
Dispatch and scheduling are coordinated from the brand’s Los Angeles office, with crews serving Woodland Hills locally. Homeowners from Walnut Acres to the hills above Ventura Boulevard call us for the same reasons: a live person answers the phone 24/7, the price never changes mid-job, and if a repair fails within a year, we come back free under the 365-Day Done Right Promise.
TPO Roofing Installation in Woodland Hills
TPO Roofing Installation in Woodland Hills typically runs $9.50 to $14.00 per square foot depending on insulation thickness, deck condition, and access. TPO is a single-ply thermoplastic membrane heat-welded at the seams, and it’s the most common flat-roof system on the 1960s and 1970s ranch homes that dominate the neighborhoods between Topanga Canyon Boulevard and Shoup Avenue. When a Woodland Hills homeowner has a flat roof that’s showing membrane cracks, ponding water, or failing seams, TPO replacement is usually the right call.
How We Install TPO
We strip the old membrane, inspect the deck for rot or delamination, replace any failed plywood or OSB, then mechanically fasten or fully adhere new TPO membrane with heat-welded seams. The welded seam is the crucial part, because it means no adhesive to dry out and split in the 110°F attic heat your roof absorbs during a Valley summer.
What Local TPO Failure Looks Like
We see two things constantly in Woodland Hills: seams that split after years of thermal expansion, and loose flashing where the flat roof meets a pitched shingle section. Both happen faster here than near the coast because the membrane expands and contracts through a wider temperature range.
Shingle Roof in Woodland Hills
Shingle Roof installation in Woodland Hills runs $11,500 to $24,000 for most homes, with architectural shingles from GAF, CertainTeed, or Owens Corning accounting for the bulk of that spread. Most Woodland Hills homes are post-WWII tract builds with traditional pitched roofs, and many are on their second or third shingle system. When granule shed is visible in the gutters, shingles are curling at the edges, or ridge caps have lifted, the roof has reached the end of its service life here.
Shingle Tear-Off and Replacement
A full Roof Installation starts with tearing the old shingles off to deck, because layering a second shingle system over a failing one traps heat and hides deck rot. We replace any rotted deck sections, install new underlayment, then the shingles, ridge caps, and flashing. Woodland Hills homes need the underlayment spec checked against the VHFHSZ map before we order materials.
Why Fastener Pattern Matters Here
Santa Ana winds push through the Santa Susana Pass corridor and hit north-facing roof planes on hillside homes with real force. Shingles installed with short fasteners or a skipped nailing pattern lift and tear. We nail to the manufacturer’s spec and add longer fasteners on exposed ridgelines, because we’ve seen what a 90 mph gust does to a shortcut roof.
Trusted Brands We Service in Woodland Hills
Mercer Roofing installs and repairs roofs using manufacturer-recognized shingle systems from GAF, CertainTeed, and Owens Corning. We work with these brands because their architectural shingle lines carry wind ratings and Class A fire ratings that hold up to Woodland Hills conditions, including the ember-resistant standards required on VHFHSZ parcels. We maintain local stock relationships for these materials, which means when we quote your Woodland Hills job, the shingles and underlayment are available quickly through our Los Angeles supply chain. No waiting weeks for a special order from out of state.
Common Roof Installation Problems We See in Woodland Hills Homes
- Ridge caps and step-flashing torn loose by Santa Susana Pass winds. North-facing hillside roof planes take the worst gusts, and flashing that wasn’t nailed to spec from the original build gets lifted, allowing water into the deck. We replace the flashing rather than caulking over it, which is the cheap fix that fails again.
- Shingle blistering and granule shed from extreme thermal cycling. Woodland Hills recorded 121°F on September 6, 2020, the highest temperature ever documented in Los Angeles County. That heat bakes asphalt shingles, breaks down the bonding agents, and causes premature failure that coastal cities simply don’t see at the same rate.
- Tile roofs with cracked mortar beds on 1980s and 1990s hillside homes. Concrete and clay tile roofs need mortar re-bedding after repeated heat cycles. Homeowners often don’t realize the tile looks fine from the street while the mortar underneath has gone brittle.
- VHFHSZ parcels with standard flatland assemblies. A home inside the Very High Fire Hazard Severity Zone that was reroofed with standard underlayment and open eaves fails defensible-space review. We pull the parcel’s designation before quoting so you’re not paying for a roof that has to be torn back off.
Pricing for Roof Installation in Woodland Hills, CA
Here are the ranges we quote in this market, based on current material costs and typical Woodland Hills access conditions:
- Shingle tear-off and replacement: $11,500 to $24,000 depending on square count, deck repair, and VHFHSZ underlayment requirements.
- TPO installation on flat or low-slope sections: $9.50 to $14.00 per square foot.
- Decking replacement: $65 to $110 per 4×8 sheet when rot is found after tear-off.
- VHFHSZ ember-resistant underlayment upgrade: adds $1,200 to $3,800 depending on roof size.
Square count, roof accessibility, current deck condition, and whether your parcel maps inside the VHFHSZ are the four variables that move a bid. Call (743) 200-8347 and we’ll measure, pull the parcel designation, and give you a written price. Estimates are free.
We Also Serve Cities Near Woodland Hills
Our Woodland Hills crews regularly install roofs in Canoga Park, Topanga, Tarzana, and West Hills. Topanga in particular has the same hillside and wind exposure patterns we handle daily, and the permitting process crosses into similarly complex terrain. If you’re in one of these neighboring communities, call (743) 200-8347 and we’ll route the right crew to you.
Serving Woodland Hills, CA - Our Local Coverage Area
We’re based in the Woodland Hills 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 Woodland Hills
Yes. A house on the flat Ventura Boulevard grid typically needs standard Class A shingles, while a home a quarter-mile upslope inside the designated Very High Fire Hazard Severity Zone legally requires ember-resistant underlayment and sealed eave vents under California’s defensible-space codes. We pull your parcel’s VHFHSZ designation from the city’s online mapping tool before we specify any material, because getting this wrong means a roof that fails inspection and has to be torn back off. Call (743) 200-8347 for a written quote that accounts for your street’s actual designation.
Extreme heat and concentrated wind are the two answers. Woodland Hills hit 121°F on September 6, 2020, and that thermal cycling causes asphalt shingles to blister and tile mortar beds to crack at a rate Encino or Sherman Oaks doesn’t experience. Add the Santa Ana gusts channeling through the Santa Susana Pass corridor, and you get ridge caps, step-flashing, and field tiles failing on north-facing hillside planes. Coastal LA cities deal with moisture and fog. Woodland Hills deals with heat and wind.
A square is 100 square feet of roof surface, and most Woodland Hills ranch homes run 18 to 24 squares, with hillside two-story homes pushing 30 to 40. Every square adds material, labor, and underlayment cost, so an accurate square count is the foundation of a written price. We measure the roof with satellite imagery plus an on-site walk, not a drive-by guess. Call (743) 200-8347 and we’ll give you the square count and the line-item price.
We install GAF, CertainTeed, and Owens Corning architectural shingles rated to 110 to 130 mph wind resistance, and we upgrade the nailing pattern on exposed ridgelines and north-facing planes where Santa Susana Pass gusts hit hardest. On a tile re-roof off a hillside street, our crew found the original 1990s mortar beds had gone brittle after years of hard thermal cycling, and the step-flashing had torn loose on the north-facing planes. We re-bedded the tile, replaced the flashing, and laid a GAF ember-resistant underlayment because the parcel mapped inside the VHFHSZ. That detail is exactly what a contractor working only the Ventura Boulevard flatlands would have missed.
We pull the VHFHSZ designation, measure square count, inspect deck condition in the attic and from above, evaluate drainage and roof pitch, and check the existing flashing and ventilation. We also confirm access for material staging and tear-off debris, which is tighter on hillside streets than on flat Valley lots. Then we write the price. You see every line item before you sign anything.
Written by Grant Whitlock, Owner at Mercer Roofing, serving Woodland Hills as part of the Threshold Group family, founded in 2000.