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Flat & low-slopeFree roof inspection with deck photos before we talk money - GAF and Owens Corning certified installation
CertainTeed Shingle Repair: The Woodland Hills Owner’s Guide
CertainTeed shingle repair in Woodland Hills typically runs $350 to $850 installed for a small repair area of 4 to 12 shingles, and most jobs are finished the same day we arrive. We stock CertainTeed-compatible shingles on our trucks, along with matching ridge caps and starter strips, so the color blend looks right the first time. Most homeowners call us after a windy night or a rainstorm when they spot a shingle in the yard, a flap lifting on the roof edge, or a water stain creeping across the ceiling near an exterior wall. The shingle itself rarely fails quietly. It tears, cracks, or pulls loose, and once one goes, the neighbors tend to follow within a season or two.
Which CertainTeed Models This Applies To
We repair across the main CertainTeed architectural lines you are most likely to have on a Woodland Hills home: Landmark, Landmark Pro, Landmark Premium, and the heavier Presidential Shake and Presidential Shake TL. The most common in this area is Landmark, and it is also the easiest to match because distribution is steady and color lots are consistent. If you have the original bundle wrapper or a leftover shingle in the garage, the color name is printed right on the wrapper label. If not, one of our technicians can measure the shingle’s exposure and thickness on site and pull a physical sample to match against current stock. CertainTeed changed some regional color names over the years, so a shingle labeled “Weathered Wood” in 2005 may match today’s “Natural Clay” more closely than today’s Weathered Wood. That is the kind of gotcha that costs homeowners a mismatched patch if the roofer only checks the name and not the actual shingle. For most Woodland Hills repairs, we recommend OEM CertainTeed over aftermarket. The color blend and granule texture matter when the repair is on a street-facing slope, and aftermarket lookalikes rarely weather at the same rate. For shed or workshop roofs, an aftermarket equivalent can save you some money, and we will say so when that is a sensible call.
Styles & brands we work with






Signs Your CertainTeed Shingle Repair Is Failing
- Curling or lifting at the shingle corners. This usually means the shingle has lost its bond to the sealant strip below it, often after years of Woodland Hills heat cycling. A lifted corner catches wind and tears further, and it will not reseal on its own.
- Granule loss showing as bare black patches or granules in the gutters. CertainTeed shingles shed some granules when new, but if you are seeing bare asphalt on the shingle face or a steady stream of granules in the downspout, the shingle’s UV protection is gone and it is degrading faster than it should.
- A cracked or split shingle, often running vertically. Cracks typically start from impact, thermal stress, or age. Once water gets under the shingle, it works into the decking below and the repair grows from one shingle to several plus underlayment.
- Missing shingles along the roof edge or around penetrations. Edge shingles and those around vents, pipes, and skylights take the most wind load. When one goes missing, the exposed nail line and underlayment become the only barrier between rain and your ceiling.
- Water staining on the ceiling or wall near an exterior corner. By the time you see a stain inside, water has already traveled through the shingle layer, underlayment, and decking. The indoor stain is the last symptom, not the first, so the repair area on the roof is usually larger than the stain suggests.
Replacement Cost & What’s Included
In Woodland Hills, you should expect a small CertainTeed shingle repair to land between $350 and $850 installed. That includes the shingles, any replacement underlayment needed, the labor, and haul-away of the old material. A basic single-shingle swap on a one-story roof with easy ladder access runs toward the lower end. The price climbs when the repair is on a steep pitch, when the damaged area is around flashing or a chimney, or when the decking underneath has rotted and needs a section replaced. We give you the written price before any work starts, and that price does not change unless we open the roof and find decking damage no one could have seen from the surface. If that happens, we show you a photo and a separate line-item price before we touch the decking. Every Mercer Roofing repair in Woodland Hills carries our 365-Day Done Right Promise in writing: if the repair fails within a year, we return and make it right at no charge. No fine print, no prorating. That written guarantee is included with every job.
DIY or Call Us?
You can safely do the detective work yourself. From the ground or a ladder, you can count missing shingles, note where they are relative to vents and edges, and take clear photos for reference. What you should not do is walk the roof and start pulling shingles. A steep Woodland Hills roof, even a modest 5:12 pitch, is the most common place we see homeowners get hurt, and loose shingles make footing unpredictable. We have also seen well-meaning DIY patches where the homeowner nailed through the shingle face instead of the nail line, and the first Santa Ana wind peeled the new shingle off and took a neighbor with it. Shingle repair looks simple from the ground, but the sealant bond, nail placement, and weather exposure all have to be right or the repair fails in months instead of years. If you want to look and take photos, go ahead. If you want it fixed once, call (341) 217-2677 and we will send someone out with the right shingles on the truck.
See the difference
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AfterHow Long Do CertainTeed Shingles Last in Woodland Hills?
Most CertainTeed architectural shingles in Woodland Hills last 18 to 25 years, though the heat on south- and west-facing slopes can pull that down to 15 to 20 years. Our summers bake shingles hard, and UV breaks down the asphalt binder faster than the manufacturer’s national average suggests. If your roof is past year 15 and you are seeing granule loss or curl, a repair is still worth doing, but you should budget for a reroof conversation in the near future. Grant Whitlock will tell you straight when a repair is enough and when it is time to plan a full replacement, and he will put that in writing before anyone picks up a nail gun. Call (341) 217-2677 and we will give you an honest read.
Can a Damaged CertainTeed Shingle Be Repaired Instead of Replaced?
A cracked or torn CertainTeed shingle can sometimes be sealed and nailed back down if the shingle material is still pliable, but once the shingle has gone brittle or lost significant granules, replacement is the only repair that lasts. In most Woodland Hills cases we replace the damaged shingle rather than patch it, because a patch on a heat-damaged shingle buys you a few months, not a few years. The exception is a shingle that is sound but has simply lost its seal, which we can often reseal with the right adhesive. Call (341) 217-2677 for an honest assessment; we will tell you which situation you have.
How Long Does a CertainTeed Shingle Repair Take?
Most single-area CertainTeed shingle repairs in Woodland Hills take one to three hours on site, and most of that time is setup, ladder work, and cleanup. If the repair involves flashing, decking replacement, or multiple roof slopes, it can stretch to a half day. We schedule a specific arrival window, and before the technician shows up you receive their name and photo so you know exactly who is at the door.
Do You Stock CertainTeed Shingles Locally?
We keep the most common CertainTeed Landmark colors on our trucks and can source any active CertainTeed color or style from local Woodland Hills suppliers within a day or two. We also stock and install GAF and Owens Corning, so if your roof is a different brand or a discontinued CertainTeed color, we can still match it closely. If we cannot get an exact match, we will tell you before any work starts, not after the patch is in place. Call (341) 217-2677 and we will check stock and color availability for you.
A roof should be the last thing you worry about. Let’s make sure it is.
Written by Grant Whitlock, Owner, Mercer Roofing Co Woodland Hills at Mercer Roofing Co Woodland Hills, serving Woodland Hills and nearby areas.