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 Northridge, CA | Bedrock Roof Repair
We provide independent CertainTeed sales & service across Northridge, from inspection through repair and full replacement. The one thing that makes our CertainTeed work different here: we treat every Northridge roof as its own seismic-era case file, because two houses on the same street can have completely different decking, underlayment, and attachment underneath shingles that look identical from the curb. If you need a CertainTeed roof looked at, repaired, or replaced, call (833) 589-7850 and we’ll tell you what’s actually under there before anyone quotes you a number.

Why Northridge Residents Choose Us for CertainTeed Service
We’ve opened up enough CertainTeed roofs across the San Fernando Valley to know how Landmark shingles, tile underlayment, and Flintlastic membranes actually behave after two or three decades of Northridge heat. Alan Cofield, our owner, trained in the building trades program at Cypress College and has spent the better part of two decades working residential roofs across Southern California. That means when we walk a CertainTeed roof in Northridge, we’re reading it, not rehearsing a sales script at you. We know what UV bake-through looks like on an XT 25 field, what dried-out felt feels like under concrete tile that still looks fine from the street, and when a post-1994 patch job has left you with attachment that no longer meets current nailing standards. We’re not a manufacturer-certified dealer. We’re an independent service provider who recommends CertainTeed when it’s the right material for your roof and your budget, not because anyone pays us to push it.
Styles & brands we work with






Common CertainTeed Roofing Problems We Solve in Northridge
- UV bake-through on XT 25 and older Landmark fields. San Fernando Valley summers deliver months of zero rain and intense direct sun. The seal strips on older CertainTeed three-tab and early architectural shingles dry out, curl, and let tabs lift long before water ever reaches the ceiling. By the time you see a granule line in the gutter, the field is usually past patching.
- Crumbling underlayment under concrete and clay tile. Northridge has a huge stock of 1950s-to-1970s tile roofs. The tile often outlives the CertainTeed felt beneath it, which bakes brittle over decades of hot, dry summers. First real winter rain finds the tears at valleys and deck edges, and the stain shows up on the ceiling while the tile still looks perfect from the street.
- Santa Ana wind peeling edges and ridge caps. On post-1994 rebuilds and older roofs alike, we see CertainTeed shingle and tile systems where the roof-to-deck attachment no longer meets current nailing code. A strong Santa Ana event lifts ridge caps and shingle edges that were nailed short or into worn sheathing.
- Skip sheathing surprises under original 1950s ranch roofs. A lot of Northridge homes still sit over spaced-board skip sheathing with one or two layers of old roofing on top. What starts as a planned CertainTeed replacement becomes a deck rebuild the moment the tear-off exposes what’s underneath, and we’ll show you exactly what we found before we proceed.
- Low-slope porch and patio leaks on Flintlastic sections. Many Northridge ranch homes have flat porch or patio sections tied into the main CertainTeed shingle slopes. Those Flintlastic membranes crack and separate at seams after enough valley heat, and we re-flash and re-membrane them without disturbing the shingle field above.
CertainTeed Service in Northridge: What Local Conditions Mean for Your Equipment
Northridge sits directly atop the 1994 earthquake epicenter, and that single fact explains more about this city’s roofing conditions than any climate chart ever will. Homes in 91324 and 91325 that were re-roofed or patched in the mid-1990s often carry newer sheathing and strapping underneath, while the original 1950s ranch next door still hides skip sheathing and worn tile underlayment from the Eisenhower administration. The roof-to-roof split on the same street is stark, and it means a CertainTeed quote here cannot be built from the neighbor’s assembly. Alan puts it plainly: “The roof tells you what went wrong. You just have to know how to read it.” On a ranch home off Reseda Boulevard in 91325, we were called for a leak over a back bedroom on a concrete tile roof patched after the 1994 quake. Lifting tile revealed CertainTeed underlayment crumbling to dust while the tile itself was sound. We did a lift-and-relay, new CertainTeed underlayment, replaced rotted sheathing at the valley, and reset the original tile without a full tear-off. Two doors down that same season, the original skip-sheathing roof needed a solid-deck CertainTeed re-roof. Same street, same week, two completely different jobs.
CertainTeed Models & Products We Service in Northridge
We work on the full range of CertainTeed residential systems found across Northridge: Landmark and Landmark Pro architectural shingles, XT 25 and XT 30 three-tab on older tract roofs, Carriage House and Presidential Shake luxury profiles where homeowners replaced wood shake, and Flintlastic low-slope membranes on porch, patio, and flat sections. For parts, we spec CertainTeed’s own matching accessories, ridge cap, starter, underlayment, and Flintlastic membrane, wherever the existing system calls for them. Where a proven aftermarket underlayment or fastener performs better for Northridge heat and UV, we’ll say so and use it. We’re not locked into one supplier’s line, and we won’t pretend a CertainTeed label on a generic component makes it a better product.
See the difference
Before
After
Before
After
Before
AfterCertainTeed Service Pricing in Northridge
CertainTeed service in Northridge runs the full range because the homes here run the full range. A targeted flashing or vent boot repair is a few hundred dollars. A tile underlayment replacement on a concrete tile roof, lift-and-relay style, typically runs higher because of the labor involved in lifting and resetting sound tile. A full CertainTeed re-roof on a 1950s ranch with skip sheathing will cost more than a straightforward tear-off on a post-1994 rebuild, because the deck work is real and we won’t hide it in the estimate. Our free estimate includes an on-roof inspection, written line-item quote, and photos of whatever we find. Call (833) 589-7850 to schedule yours, and we’ll tell you whether your CertainTeed roof needs repair, replacement, or nothing yet.
Serving Northridge, CA — Our Local Coverage Area
We’re based in the Northridge area and also handle CertainTeed in North Hills, Encino, Van Nuys, and Valley Glen. Use the map below to see our full service coverage — if you’re nearby, we can almost certainly help.
FAQs – CertainTeed Roofing in Northridge
Usually easier on the deck side, because post-1994 rebuilds in Northridge often have newer sheathing and strapping that’s close to current code. The catch is that some 1990s patch jobs used shortcuts we now have to correct, short nailing, missing clips, or old underlayment over mismatched sheathing. We’ll inspect the actual deck before we quote. Call (833) 589-7850 to have us look.
In Northridge, that’s the most common cause. Tile outlives underlayment here because the valley heat bakes CertainTeed felt brittle years before the tile fails. The leak usually starts at a valley, deck edge, or penetration, and the water travels before it shows on the ceiling. We’ll lift tile in the suspect area and show you what’s underneath before we recommend anything.
We tear off to decking. On 1950s Northridge ranch homes with skip sheathing, that means the deck rebuild is part of the job and part of the quote. We won’t lay new CertainTeed shingles over spaced boards or multiple old layers, because that’s how you get a roof that fails in the first Santa Ana wind event. Call (833) 589-7850 for an exact scope on your house.
Often yes. If the shingle field itself is still sound and the problem is short nailing or worn seal strips at the ridge line, we can re-secure or replace the ridge caps and starter course without touching the field. If the field is baked out and granule-bare, patching ridge caps is just delaying a replacement you’ll need within a season or two. We’ll show you the difference.
We do. Northridge ranch homes frequently have flat porch or patio sections tied into the main CertainTeed shingle roof, and those Flintlastic membranes are often the first thing to fail. We service the whole roof, shingle slopes and low-slope sections, as one system, because that’s how water sees it. Call (833) 589-7850 to get the whole roof evaluated.
Service Areas Near Northridge
We serve Northridge and the surrounding San Fernando Valley communities, including homes across 91330, 91324, 91325, and 91327. For CertainTeed work in the Inland Empire, see our CertainTeed service in Highland page, or CertainTeed service in Phelan for the High Desert. Our full Northridge service area page covers everything we handle here.
Book Your CertainTeed Service in Northridge Today
Call (833) 589-7850 to schedule your free CertainTeed roof inspection in Northridge. We’ll get on the roof, show you what we find, and give you a written quote that tells you straight whether you need repair, replacement, or nothing yet.
Written by Alan Cofield, Owner at Bedrock Roof Repair, serving Northridge and the San Fernando Valley.