Architectural shingles
Metal roofing
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 Replacement Across Valley Glen
Roof replacement in Valley Glen runs $9,800 to $15,600 for a typical 1,200 to 1,600 square foot single-story home with architectural asphalt shingles, including tear-off, decking repair, underlayment, and flashing. That price moves higher when the job uncovers what older Valley Glen homes often hide: failed skip-sheathing, rot at the eave lines, or a detached garage and flat patio addition that need to be tied into the new roof system correctly. If you’re seeing curling shingles, granules in the gutters, or daylight peeking through the attic boards, call Gable Roof Repair at (866) 650-8319 for a free inspection and a written quote that accounts for what’s actually under your roof, not just what’s on top of it.
Why Gable Roof Repair Is Valley Glen’s Preferred Roof Replacement Company
Neil Drummond leads a crew that knows Valley Glen’s housing stock the way a mechanic knows a 1940s flathead: we’ve opened enough of these roofs to predict what’s underneath before the first shingle comes off. Homeowners along Hazeltine Ave, Van Nuys Blvd, and the side streets west of Valley College call us because we don’t hand them a generic bid and hope for the best. We write allowances into the contract for the decking, flashing, and framing repairs that older homes usually need, and every change gets priced and approved in writing before we touch it.
Our process starts with a standalone roof inspection, separate from any replacement proposal. That means the diagnosis isn’t tied to a sales pitch. If repair makes more sense than replacement, we say so. When replacement is the right call, the quote reflects the real scope, including the code upgrades a permit triggers once the roof is torn open. Valley Glen homeowners tell us the same thing: they’d rather hear the honest number up front than get a surprise invoice after the decking is exposed.
Styles & brands we work with
Roof Installation in Valley Glen
Roof installation in Valley Glen means more than laying shingles over an existing deck. On the 1920s bungalows and 1950s California ranch houses common here, a proper installation often starts with replacing the deck itself. We strip the old layers, inspect every board, and bring the roof plane up to current code before any underlayment goes down. A full tear-off and new architectural shingle install on a standard Valley Glen home runs $9,800 to $15,600, with flat roof sections on patio additions or detached garages adding $18 to $28 per square foot.
Decking and Structural Prep
Original skip-sheathing on Valley Glen’s older homes was laid with gaps to let the old wood shingles breathe. Those gaps don’t hold modern underlayment, and the boards themselves have often shrunk, cracked, or pulled loose from the rafters after seventy or eighty years of Valley heat. We replace what’s failed with code-rated plywood or OSB, and we do it with a written change order before a single sheet goes on.
Valleys, Flashing, and Ventilation
Mixed-material roofs, clay tile next to asphalt, flat patio roofs meeting gable ends, are the norm in Valley Glen, and they fail at the transitions. We install ice and water shield in every valley and at every roof-to-wall juncture, replace drip edge and ridge vent, and correct the attic ventilation that the original builders never accounted for.
Roof Replacement Contractor in Valley Glen
A roof replacement contractor in Valley Glen has to understand that no two jobs on these older lots look the same. One house might have a clay tile main roof with an asphalt-shingle addition from the 1970s. The neighbor might have three layers of comp shingles over original plank decking. That’s why we don’t bid Valley Glen jobs from a satellite photo. We walk the roof, check the attic, and price the job for what’s really there. Full roof replacement on a detached garage with a flat section typically adds $3,200 to $5,800 depending on size and deck condition.
New Construction and Additions
When Valley Glen homeowners add square footage or build a detached ADU, the roof has to meet current Title 24 energy standards and the city’s building code. We handle new construction roofing from the trusses up, coordinating with the framing crew so the sheathing, underlayment, and shingle installation don’t slow the project down. New construction roof installation in Valley Glen starts around $6 to $9 per square foot for architectural asphalt, depending on pitch and access.
Asphalt and Architectural Shingles
We work with asphalt shingles from GAF, CertainTeed, and Owens Corning, and our default recommendation for Valley Glen’s climate is an architectural shingle with a high wind rating and a solar-reflective surface option. The Valley sun bakes standard three-tab shingles flat in ten to twelve years. Architectural shingles hold their profile longer and carry better manufacturer warranties, which matters when the Santa Ana winds start pulling at the edges every fall.
Trusted Brands We Service in Valley Glen
We’re certified to install and service roofing systems from seven major manufacturers, including GAF, CertainTeed, and Owens Corning. That matters in Valley Glen because your existing roof might be a GAF system while your garage is CertainTeed and your patio is a torch-down flat roof. We match materials to what’s already on the house, then install everything to manufacturer spec so the warranty holds. We stock common shingle colors and flashing profiles locally in the San Fernando Valley, which keeps turnaround tight when a Valley Glen roof replacement needs to move quickly. Your roof’s brand, not ours. That’s the approach.
See the difference
Before
After
Before
After
Before
AfterCommon Roof Replacement Problems We See in Valley Glen Homes
- Failed skip-sheathing under old shingles. The original boards on 1920s and 1940s Valley Glen homes were never meant to hold a modern nail-down roof. Once they’re exposed, they usually need full replacement to pass inspection.
- Mixed-material transitions that leak. Clay tile mains meeting asphalt additions, flat patio roofs meeting gable ends. These junctions are where water gets in, and they need ice and water shield and correct flashing, not just more sealant.
- Detached garages and flat patio additions failing first. These structures sit at the back of the lot, get the least attention, and often have low-slope or flat sections with worn torch-down or rolled roofing. They’re the last to be roofed and the first to leak in a storm.
- Heat- and wind-damaged shingle surfaces. Valley Glen’s summer highs above 100°F bake asphalt shingles until the granules shed and the matting cracks. By the time the Santa Ana winds hit in October, the roof has lost its grip and shingles start peeling.
Pricing for Roof Replacement in Valley Glen, CA
Here’s what Valley Glen homeowners actually pay. A standard single-story home with architectural asphalt shingles: $9,800 to $15,600. That includes tear-off of up to two layers, decking repair (replacing up to 4 sheets of plywood), synthetic underlayment, new drip edge, pipe boots, and haul-away. Full decking replacement, common on the older Valley Glen homes with original skip-sheathing, adds $2,800 to $5,400 depending on square footage. Flat roof sections run $18 to $28 per square foot. A detached garage reroof adds $3,200 to $5,800. Permits are pulled on every job, and any change order is priced and signed before we proceed. Call (866) 650-8319 for a free estimate and a line-item quote.
We Also Serve Cities Near Valley Glen
Gable Roof Repair handles roof replacement across the central and east San Fernando Valley. Beyond Valley Glen, our crews work regularly in Van Nuys, Sherman Oaks, Encino, and North Hills. If you’re on the border of any of these areas, the same inspection-first process applies. For full details on our approach, see our Roof Replacement service page.
Serving Valley Glen, CA — Our Local Coverage Area
We’re based in the Valley Glen 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 Replacement in Valley Glen
We write a decking allowance into the contract before we start, based on what we see in the attic during the inspection. If the original skip-sheathing is cracked, shrunk, or gapped wider than code allows, we replace it with new plywood or OSB and give you a written change order with the exact square footage and price before any of that work begins. On a 1940s California bungalow near Hazeltine Ave, our crew stripped three layers of failed shingles and found the original sheathing had shrunk badly. We installed a full deck with new plywood and ice and water shield in the valleys, finished with GAF Timberline HDZ architectural shingles, and corrected the drip edge and ridge vent. The homeowner approved the change order before we nailed a single board, and the final invoice matched the contract to the dollar. Call (866) 650-8319 to schedule your free inspection.
Because the original builders used skip-sheathing, boards spaced with gaps to ventilate old wood shingle roofs, and those boards don’t meet current code for a nail-down asphalt roof. After seventy or eighty years of Valley heat, the boards have shrunk, split, or pulled loose from the rafters. A new underlayment and shingle system needs a solid, code-rated deck, so the redeck isn’t an upsell; it’s the only way to pass inspection and keep the manufacturer warranty valid. We show you photos of the decking from the attic and from the tear-off so you can see exactly what we saw. Call (866) 650-8319 for a free estimate that includes a decking allowance.
Yes. A roof replacement in Valley Glen requires a city building permit, and once the roof is open, the inspector will flag any conditions that don’t meet current code. That can include undersized framing, missing fire blocking, or outdated wiring running through the attic space. We anticipate these upgrades, price them into the contract as allowances, and get written approval from you before proceeding. You’ll never get a surprise invoice after the inspector leaves. Call (866) 650-8319 to talk through what your specific roof might trigger.
We treat them as part of the same roof system, not an afterthought. The junction where a flat patio roof meets the main house wall is one of the most common leak points in Valley Glen, and it needs proper ice and water shield, counter-flashing, and slope correction if the flat section isn’t draining. We’ll quote the garage and patio roofs separately in the line item so you can see exactly what each structure costs, then do the work so the whole property sheds water as one system. A detached garage reroof with a flat section typically adds $3,200 to $5,800 in Valley Glen. Call (866) 650-8319 to get your whole property quoted.
Most Valley Glen single-story homes run between 12 and 20 squares (1,200 to 2,000 square feet of roof area), depending on the footprint, overhangs, and whether the garage and patio are included. A 15-square architectural shingle replacement on a 1940s bungalow typically falls in the $11,000 to $14,000 range before decking repairs. We measure every plane with a laser and give you the exact square count in your quote, not an estimate from satellite imagery. Call (866) 650-8319 to schedule a free measurement and written estimate.
Written by Neil Drummond, Owner at Gable Roof Repair, serving Valley Glen and the surrounding San Fernando Valley since the company’s founding.