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
CertainTeed Roofing in Valley Glen, CA | Orange County Roofing Co
If you own a home in Valley Glen, the sun has been working against your CertainTeed roof since the day it was nailed down. We provide independent CertainTeed shingle replacement, decking repair, and Roof Repair – Valley Glen flashing work across 91404, and the one factor that shapes nearly every job we do here is the west-facing slope failing years before the rest of the roof. That is not a guess. It is what we find when we get on the ladder. Our crews serve Valley Glen with same-week scheduling, and calls go straight to our team at (866) 942-4187.
We are an independent CertainTeed service provider, not an authorized or manufacturer-affiliated dealer. We carry seven major shingle brands, so when we recommend CertainTeed, it is because it fits your roof and your budget, not because it is the only product on our truck. For Valley Glen service area coverage, our team knows exactly what these heat-baked roofs need.
Why Valley Glen Residents Choose Us for CertainTeed Service
We have spent years pulling apart CertainTeed Landmark and XT shingle roofs across the San Fernando Valley floor, including CertainTeed repair in Sherman Oaks, and what we see on Valley Glen homes rarely matches what coastal LA roofers describe. Heat is the story here. To be blunt and specific about it, we know how CertainTeed’s shingle lines and underlayment systems age under relentless valley sun, not how they age three miles from the marine layer.
Kurt Hensley, who owns Orange County Roofing Co, grew up watching tile crews work hillside roofs before he ever picked up a nail gun. That background shaped how we run jobs here: we strip a section, look at the decking, and tell you exactly what is there, not what we hoped was there. And we carry OEM-compatible CertainTeed shingles and accessories, so when we open up a slope, the materials we lay back down match what is already on your roof.
You are not getting a brand pitch from us. You are getting a straight read on whether your CertainTeed roof can be repaired, which slopes need replacement, and what the decking underneath is actually doing. One call covers it: (866) 942-4187.
Styles & brands we work with
Common CertainTeed Roofing Problems We Solve in Valley Glen
- Granule loss on west and south facing Landmark slopes. The afternoon valley sun in Valley Glen bakes these exposures hard, and CertainTeed Landmark architectural shingles lose granules faster on these planes than on shaded north slopes. You will see granules piling in the gutters while the shingle looks thin and shiny. This is the most common CertainTeed failure pattern we address in 91404.
- Thermal cracking and sealant strip failure on older CertainTeed shingles. Repeated expansion and contraction in Valley Glen’s 100°F-plus summer cycles cracks the sealant bond on three-tab XT 25 and early architectural shingles. Tabs never fully seal, then flutter in the dry wind. Once that seal breaks, the shingle is loose and lifting.
- Dried-out WinterGuard and failing flashing at valleys and pipe boots. Aged CertainTeed WinterGuard underlayment turns brittle after enough heat cycles, and the flashing at valley joints and plumbing vents dries out alongside it. Interior leaks show up even when the field shingle still looks intact. The leak is rarely where the stain is.
- CertainTeed shingles nailed over original skip-sheathing. Valley Glen’s 1950s and 1960s ranch homes were often built with spaced board sheathing, not solid plywood. Heat-cycled boards shift and move, and the whole shingle assembly cracks along the gap lines. A shingle replacement over that decking will fail prematurely unless the decking is addressed.
- Uneven aging between sun-exposed and shaded slopes. On Valley Glen ranch houses, the west gable end can look 15 years older than the rest of the roof. The shingle color fades unevenly, granules are gone, and we are often asked whether one slope can be replaced instead of the whole roof. The answer is sometimes yes, and we will tell you honestly when it is not.
Each of these is a known CertainTeed failure mode in this climate. Each has a specific repair path that does not always involve a full re-roof.
CertainTeed Service in Valley Glen: What Local Conditions Mean for Your Roof
Valley Glen’s housing stock is predominantly single-story 1950s and 1960s ranch and mid-century tract houses with low-pitch gable and hip roofs. Many still carry their original or second-generation CertainTeed shingle layer over wood decking, and we also handle North Hills CertainTeed service for similar homes. That matters because a straight shingle replacement here routinely turns into a deck-scope job once the old field is stripped. When we pull the first course, we find skip-sheathing with quarter-inch gaps, or wood board decking that has shrunk and split after sixty years of valley heat. That decking cannot be re-shingled reliably. The nails will not hold in the gaps, and the shingle manufacturer’s warranty assumes a solid, code-compliant substrate.
So we price decking and sheathing into the first estimate from the start. Not as a change order. Not as a surprise discovered mid-tear-off. If we find the decking is solid, we adjust the price down. If we find it is not, you already know the number. That approach came from jobs like one on a 1950s ranch off Ethel Avenue on Valley Glen’s west side, and from our experience with CertainTeed repair in Van Nuys. A homeowner called about a ceiling stain. The west-facing CertainTeed Landmark slope was granule-starved and cracked while the shaded rear slope still had life in it. When our crew pulled the failed slope, we hit the original spaced-board skip-sheathing. We re-sheeted that section to solid decking, laid new WinterGuard underlayment, and reset CertainTeed Landmark architectural shingles matched to the rest of the roof. That slope-matched fix saved the homeowner thousands versus a full re-roof.
A roof should not be a mystery. We look at what you have got and go from there.
CertainTeed Models & Products We Service in Valley Glen
We work on every major CertainTeed shingle line that appears on Valley Glen roofs. That includes Landmark architectural shingles, the XT 25 and XT 30 three-tab lines that are common on older ranch homes, and the heavier Presidential Shake and Presidential TL luxury lines on higher-end infill builds. We also address WinterGuard waterproofing underlayment, which fails in predictable ways under decades of valley heat.
Our parts approach is direct: we match CertainTeed shingles with proven compatible components. High-temp ice-and-water membrane at valleys and eaves, quality metal flashing, modern vent boots. We do not use cheap aftermarket substitutes that fail early. When a heat-baked slope has failed but the rest of the roof is sound, we recommend a slope-matched repair or partial replacement instead of selling a full CertainTeed re-roof you do not need yet. For broader CertainTeed sales & service details, we cover the full brand ecosystem.
See the difference
Before
After
Before
After
Before
AfterCertainTeed Service Pricing in Valley Glen
CertainTeed roofing work in Valley Glen is priced by scope, not by guesswork. A slope-matched shingle repair runs between $850 and $2,400 depending on the size of the exposure and whether decking replacement is needed. A partial decking re-sheet with new CertainTeed Landmark shingles on one slope typically falls between $2,800 and $6,500. A full CertainTeed shingle replacement over new solid decking on a typical Valley Glen ranch ranges from $14,000 to $28,000 depending on roof size, decking scope, and shingle line.
| Service | Typical Valley Glen Range |
|---|---|
| Slope-matched CertainTeed shingle repair | $850 – $2,400 |
| Partial decking re-sheet + CertainTeed Landmark (one slope) | $2,800 – $6,500 |
| Full CertainTeed replacement over new decking | $14,000 – $28,000 |
| Flashing and pipe boot replacement | $450 – $1,800 |
What drives the number in Valley Glen is decking condition first, slope count second, and shingle line third. A roof with original skip-sheathing costs more than one with solid plywood because labor and material for re-sheeting is real, not optional. Free estimates include a deck-scope assessment on any job we think will hit the frame. Call (866) 942-4187 for a written line-item quote on your Valley Glen roof.
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 – CertainTeed Roofing in Valley Glen
Yes, and the difference is measurable. Summer temperatures in Valley Glen regularly exceed 100°F with almost no coastal marine layer to moderate the afternoon sun. Asphalt shingles absorb that heat, and west-facing slopes especially cook. Granule loss, UV brittleness, and thermal cracking all accelerate. A CertainTeed Landmark roof in Valley Glen will typically show west-slope granule loss years before the same roof in a coastal LA neighborhood would. Call (866) 942-4187 if you are seeing granules in your gutters and want to know what is happening.
Because so many Valley Glen homes still carry their original 1950s and 1960s wood decking under the shingles. When you strip a roof that old, the decking is rarely in shape to accept new nails. We would rather give you the full number up front than hit you with a change order mid-job. If we find solid decking, the price comes down.
Sometimes, yes. If the west exposure has failed from heat and the rest of the roof still has granule coverage and intact seals, a slope-matched replacement is a legitimate option. The shingle color will be slightly different because the old slopes have weathered. We will tell you that up front. Call (866) 942-4187 and we will tell you whether your roof qualifies.
In Valley Glen, it is often both, but the flashing usually fails first. Dried-out pipe boots, cracked valley metal, and brittle WinterGuard underlayment at eaves are the common leak sources on older CertainTeed roofs here. The shingle may look fine, but water is getting behind it. That is why we inspect the transition points first, not just the field shingle. A leak diagnosis is part of a standard inspection call.
It can, especially on west and south facing slopes that take the brunt of the afternoon sun. CertainTeed Landmark Solaris and similar reflective lines are designed to reduce heat absorption, and on a Valley Glen ranch with a high ceiling and an undersized AC system, that can make a real difference in attic temperatures. It is not the right call for every home, but it is worth considering if you are already replacing a full slope. Call (866) 942-4187 for a straight conversation about whether reflective shingles make sense for your roof.
Service Areas Near Valley Glen
Our crews work beyond Valley Glen into surrounding San Fernando Valley and nearby communities. We regularly handle CertainTeed service in Encino, Sherman Oaks, North Hollywood, Van Nuys, and Studio City. For clients further east on the 101 corridor, we also route CertainTeed service in Anza when the job calls for it. If you are unsure whether we cover your street, call and ask.
Book Your CertainTeed Service in Valley Glen Today
If your CertainTeed roof in Valley Glen is showing granule loss, lifting tabs, or a water stain on the ceiling, do not wait for the next rain to find out how bad it is. We schedule same-week inspections across 91404 and every estimate is free. Call Orange County Roofing Co at (866) 942-4187 to get on the calendar.
Written by Kurt Hensley, Owner at Orange County Roofing Co, serving Valley Glen and the surrounding San Fernando Valley since day one.