Roof Replacement in Ventura County

A roof replacement is one of the biggest projects most homeowners take on, and it’s worth understanding before you start collecting bids. We connect Ventura County homeowners with independent local roofing contractors for full replacements, tile lift-and-relay jobs, and re-roofs that switch materials.

Signs your roof may need replacing

Leaks keep showing up in new places even after repairs.
Asphalt shingles are curling, cracked, or losing their granules across large areas.
Many tiles are cracked or slipping, or the underlayment beneath tile has broken down (you may see it crumbling at the eaves).
The roof deck feels soft or looks wavy.
The roof is at or past the typical life of its material and you’re planning to sell, add solar, or remodel.

Choosing a material for Ventura County

Asphalt shingles are common on tract homes built from the 1960s through today in Simi Valley, Thousand Oaks, Moorpark, and Camarillo. They’re lighter and usually less expensive than tile. Concrete tile is everywhere in newer subdivisions and many coastal neighborhoods; it’s heavy and durable, but the underlayment under it wears out long before the tile. Clay tile fits Spanish and Mission-style homes, including many in Ventura, Ojai, and Santa Paula’s older neighborhoods. Low-slope roofs on mid-century homes, additions, and patios need membrane systems rather than shingles or tile.

Switching from a light material to tile can require an engineer to check that the framing can carry the extra weight. Switching from tile to a lighter material usually doesn’t have that issue.

Fire ratings and energy code

Much of Ventura County, from the hills above Ventura and Ojai to the Conejo Valley, Simi Valley, Moorpark, and Somis, sits in or near areas mapped as fire hazard severity zones, and the county has lived through major wildfires. In these areas, California’s building code generally requires a Class A fire-rated roof assembly on re-roofs. Details at the eaves, vents, and gutters matter too, since embers get in through gaps.

California’s energy code, Title 24, can also require “cool roof” products on some re-roofs depending on climate zone and roof slope. Your contractor should know what applies at your address, and the building department will check it at inspection.

What a replacement involves

Inspection and written proposal covering tear-off, deck repair allowances, underlayment, flashing, ventilation, material, and permit.
Permit from your city’s building department, or the County of Ventura for unincorporated areas such as Somis, Santa Rosa Valley, Oak View, and Oak Park.
Tear-off of the old roof and inspection of the deck. Damaged sheathing is replaced.
Installation of underlayment, new flashing, vents, and the roof covering.
Final inspection and cleanup, including a magnetic sweep for nails.

Questions to ask each contractor

Is your license active, and what classification is it? (Roofing contractors typically hold a C-39 license.)
Who pulls the permit, and is it included in the price?
What underlayment and flashing will you use, and will flashing be replaced or reused?
How do you price rotted wood if you find it?
What warranty do you provide on labor, and what manufacturer warranty applies to the materials?
If I have solar panels, who removes and reinstalls them?

If you’re not sure you need a full replacement, start with a roof inspection or read our repair vs. replace guide.

Roof Replacement help across Ventura County

We take requests from all 16 communities we cover. Local guides:

Frequently asked questions

How do I know it's time to replace my roof?

Common signs include repeated leaks in different spots, brittle or bald shingles across the roof, widespread cracked tiles, sagging areas, and underlayment that has deteriorated under a tile roof. A contractor's inspection is the best way to confirm.

Can I put new shingles over my old roof?

Codes can allow a second layer in some situations, but many roofers recommend a full tear-off so they can inspect and repair the deck, and fire-rating or local rules may affect what's allowed. Ask your contractor and building department.

Can I reuse my existing concrete tiles?

Sometimes. Concrete tile often outlasts the underlayment beneath it, so a 'lift and relay' job replaces the underlayment and flashing and reinstalls the original tiles, replacing broken ones. Whether that's a good option depends on the tile's condition and availability of matches.

Who pulls the permit?

Normally the licensed contractor pulls the permit and arranges inspections. Be cautious if a contractor asks you to pull an owner-builder permit for their work.

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