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
Fast, Reliable Roof Installation Across Northridge
Roof installation in Northridge typically runs $9,500 – $18,500 for a standard composition shingle tear-off and replacement on a 1,800 – 2,400 sq ft single-story home, with most projects completed in 3 – 5 working days once permits clear. That’s the number most homeowners actually need, and we’d rather you have it before you call. Our crews work throughout Northridge weekly, from the CSUN-adjacent blocks south of Nordhoff to the quiet streets east of Reseda Blvd. Call (661) 219-7793 and we’ll schedule a free estimate with a written line-item price in your hands before any work begins.
What separates one roofer from another here isn’t brand preference. It’s whether they know what’s under the shingles on a Northridge home built before 1980, and whether they’ll charge you honestly for what they find. We do both, in writing.
Why Crestview Roofing Co Santa Clarita Is Northridge’s Preferred Roof Installation Company
Dylan Pace built Crestview on a simple principle: the price on the written estimate is the price on the final invoice. No change orders slipped in at the end, no “unforeseen conditions” premium added after the tear-off exposes rotted decking. That matters more in Northridge than almost anywhere else in the Valley, because our housing stock is old enough to surprise you.
Every Crestview technician is background-checked and uniformed, so you know exactly who’s climbing onto your roof before they arrive. We send before-and-after photos on every job, a live arrival time you can track, and a digital invoice by text when the work is done. This is the Relay Standard, and it’s how we’ve earned our standing with Northridge homeowners since 2000.
We’re part of the Relay Home Co. family, and every job we install carries the 365-Day Done Right Promise. If something we installed fails within a year, we fix it at no charge. That’s a written guarantee on every repair, included on every contract, no negotiation required.
Styles & brands we work with
Roof Flashing Installation in Northridge
Roof flashing installation in Northridge is one of the most common calls we get after a Santa Ana wind event, especially on 1950s and 1960s homes where the original metal at roof-to-wall intersections was never secured to current code. Flashing is the metal strip that seals the joints around chimneys, vents, and wherever roof planes meet vertical walls. When it fails, water gets behind the stucco and into the framing, and by the time you see a ceiling stain, the repair has already doubled. Most flashing work in Northridge runs $450 – $1,400 depending on how many penetrations and wall intersections need re-sealing.
Step Flashing at Wall Intersections
On the older single-story ranches common east of Reseda Blvd, step flashing is the piece that fails first. It is installed in short overlapping sections where a sloped roof meets a vertical wall. We cut out the old metal, inspect the wall sheathing behind it, and install new corrosion-resistant flashing rated for the Valley’s UV load.
Chimney and Vent Penetration Flashing
Chimneys in Northridge’s post-war homes shift slightly over decades of seismic movement, which breaks the original sealant and separates the metal. We install two-part flashing systems, counter-flashing and base flashing, with proper weep drainage. That’s the only way to stop slow leaks that have been dripping into the attic since the last big rain.
TPO Roofing Installation in Northridge
TPO roofing installation in Northridge is what we recommend for flat and low-slope roofs, which you’ll find on many commercial buildings around CSUN and on some covered patios and additions on residential properties. TPO is a single-ply thermoplastic membrane that reflects UV light instead of absorbing it, which matters when your roof surface hits 140°F in July. A typical residential TPO installation in Northridge runs $8,000 – $14,000 depending on square footage, insulation requirements, and the condition of the existing decking. It’s the best balance of durability and cost for the Valley’s long, hot summers.
Full Tear-Off vs. Overlay for Flat Roofs
We almost always recommend a full tear-off on flat roofs in Northridge. The old built-up roofing hides trapped moisture that rots the deck from below. An overlay would cover the problem while it gets worse. A full tear-off lets us inspect the substrate, replace damaged plywood, and install a fully adhered TPO membrane that stays put during Santa Ana winds.
Seam Welding and Edge Detail
TPO seams are heat-welded, not glued. That’s the difference between a roof that leaks in year one and one that holds for 20. We also install reinforced edge metal and proper drip edge at every perimeter, because the wind that comes down from Porter Ranch will find any weak seam you left for it.
Trusted Brands We Service in Northridge
We install and repair roofs using materials from GAF, CertainTeed, and Tamko, among other manufacturers. When a Northridge homeowner calls with a roof issue, we don’t have to order parts from a warehouse across town and make them wait. We keep common flashing sizes, underlayment rolls, and shingle colors stocked for quick turnaround, and we have direct relationships with local distributors for anything specialized. You’ll never get a vague answer about what material is going on your roof. It’s written on your estimate, by name and model number.
See the difference
Before
After
Before
After
Before
AfterCommon Roof Installation Problems We See in Northridge Homes
- UV-baked shingles splitting and losing granules: Northridge regularly passes 100°F in summer, and that repeated heat breaks shingles down from the top while the attic heat cooks them from below. By year 18 or 20, a lot of composition shingles here are curling, cracking, and shedding granules into the gutters.
- Santa Ana wind damage at eaves and rakes: The winds that come through the passes hit Northridge hard, and they tear off anything that wasn’t nailed or sealed to code. Older 1950s roofs are the worst: flashing half-fastened, drip edge missing, shingles past their wind warranty age.
- Radiant barrier sheathing failure on 1960s and 70s homes: East of Reseda Blvd especially, original radiant barrier sheathing breaks down internally over decades. The deck gets wavy, the shingles lose their fastening surface, and leaks start at valleys and penetrations. You can spot these roofs from the street before we even get a ladder up.
- Post-1994 quake rebuilds now hitting end of life: Homes rebuilt quickly after the Northridge Earthquake used original materials that are now 20-25 years old. Many of those roofs are at or past their intended lifespan, and they often need full re-sheathing plus upgraded seismic anchor bolts for any tear-off to meet current code.
Pricing for Roof Installation in Northridge, CA
Here’s the honest breakdown for Northridge. A standard composition shingle roof on a 1,500 – 2,000 sq ft single-family home: $9,500 – $14,500. Larger homes or steeper pitches: $13,000 – $18,500. Tile roofs on higher-end homes near Northridge Country Club or along Lassen: $18,000 – $30,000. TPO flat roof work: $8,000 – $14,000. Flashing work as a standalone repair: $450 – $1,400. What shifts the number most in Northridge is what’s under the shingles. If the decking needs full replacement, that’s a line item you’ll see on our estimate before we start, not a surprise afterward. Call (661) 219-7793 for a free estimate and we’ll give you a written price you can hold us to.
We Also Serve Cities Near Northridge
Our Roof Installation team handles a full schedule of projects in Northridge and the surrounding San Fernando Valley communities. You’ll find us working regularly in Winnetka, Reseda, Porter Ranch, and Chatsworth. If your home sits near the Northridge border with any of those neighborhoods, the same crew, the same written pricing, and the same 365-Day Done Right Promise apply.
Serving Northridge, CA - Our Local Coverage Area
We’re based in the Northridge 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 Northridge
On many post-1994 Northridge Earthquake rebuilds and any older home with visible framing issues, yes. Current Northridge building code requires shear wall and roof tie-down upgrades when a tear-off exposes framing that does not meet seismic standards for the area. This is not optional, and it is not a line item we can skip. On a 1960s rancher east of Reseda Blvd, our crew pulled back the old shingles to find original radiant barrier sheathing so degraded it had wavy deck lines and crumbling edges. We stripped to the trusses, laid down new GAF decking, added a full ice and water shield at the eaves, and installed CertainTeed Landmark architectural shingles with upgraded seismic anchor bolts to meet current Northridge code. The homeowner’s attic stayed 15°F cooler after we added a continuous ridge vent. Your estimate will include any required seismic upgrades as a written line item before work begins, so you’ll know the number on day one. Call (661) 219-7793 and we’ll walk through what your roof is likely to need.
We inspect it during the estimate and we budget for its replacement. Original radiant barrier sheathing from the 1960s and 70s degrades internally over decades, even if it looks passable from the attic. The deck waves, the edges crumble, and shingles lose their nailing surface. If we see deck lines starting to wave from the street, we plan for full re-sheathing in your written contract, not as a surprise after tear-off. Some sheathing can be patched. Older radiant barrier usually can’t. We’ll tell you which you have and what it means for price before you sign anything.
We install synthetic underlayment with high thermal stability on every roof in Northridge. The old felt paper dries out and splits under the Valley’s 100°F-plus summer heat, which is exactly why so many older homes here have leaks even when the shingles look passable. Synthetic underlayment also grips better in high wind, so it helps during Santa Ana events. We also add a self-adhering ice and water shield at the eaves and valleys, which provides a second layer of protection at the roof’s most vulnerable points.
Yes. Every Crestview roof installation contract includes a written allowance for decking replacement and any framing repair discovered after the shingles come off. The allowance number is printed on your estimate. If we use part of it, you get the unused portion back. If we find something beyond the allowance, we stop work, show you photos, and get your written approval before spending another dollar. That is the Relay Standard: no hidden fees, no price moving without your signature.
We install to the manufacturer’s high-wind specification, which means six-nail fastening patterns, full synthetic underlayment, and upgraded drip edge and flashing fastening at every roof-to-wall intersection. On older homes where the original flashing was never secured to current code, we replace it entirely instead of reusing twenty-year-old metal. The roof edge is where Santa Ana winds win their fights. We build the edge to lose the argument.
If you’re looking at a new roof in Northridge, you deserve a real number and a real plan before the work starts. Call (661) 219-7793 to schedule your free estimate. We’ll inspect the roof, tell you what’s under it, and hand you a written price with the full scope of work, including whatever seismic or decking upgrades the code requires. No surprises, no phone tag, no invoice that doesn’t match the estimate.
Written by Dylan Pace, Owner at Crestview Roofing Co Santa Clarita, serving Northridge and the San Fernando Valley.