Top Emergency Roofing Services in Ontario, CA, 91743 | Compare & Call

There are 239 roofing companies server in Ontario CA

Estrada Roofs

Estrada Roofs

★★★★★ 4.8 / 5 (98)
726 S Huron Dr, Santa Ana CA 92704
Roofing, Roof Inspectors

For over three decades, Estrada Roofs has been a trusted, family-operated roofing contractor serving Santa Ana and Orange County. Founded on a legacy of craftsmanship, we bring together over 48 years ...

De Lorenzo's Guaranteed Roofing

De Lorenzo's Guaranteed Roofing

★★★★★ 4.9 / 5 (32)
616 W Hart Pl, Montebello CA 90640
Roofing

Founded in 1992 by Joseph De Lorenzo, who started in the roofing trade in 1987, De Lorenzo's Guaranteed Roofing is a family-owned and operated business serving Montebello and the surrounding areas. Fo...

The Mobile Home Doctors

The Mobile Home Doctors

★★★★☆ 4.1 / 5 (14)
Gardena CA 90248
Mobile Home Repair, Roofing, Electricians

The Mobile Home Doctors is a locally owned and operated service in Gardena, CA, founded by a Native American owner with deep roots in the mobile home community. With a team that brings over 50 years o...

Monarch Roofing

Monarch Roofing

★★★★★ 4.9 / 5 (59)
Orange CA 92867
Roofing

Monarch Roofing is a family-owned, GAF Certified roofing company with over two decades of experience serving Orange and Riverside Counties. We provide reliable commercial and residential roofing servi...

Competition Roofing

Competition Roofing

★★★★★ 4.7 / 5 (164)
101 S Loma Pl, Upland CA 91786
Roofing

My name is Joe, and I've been a part of this community my entire life. Born and raised in San Dimas since 1968 and now an Alta Loma resident, my family and I are deeply rooted here. My wife, Pauline, ...

Top One Builders

Top One Builders

★★★★★ 4.8 / 5 (14)
San Fernando Valley CA 91401
General Contractors, Roofing

Top One Builders, a family-owned and operated general contractor in the San Fernando Valley, brings a deep, generational commitment to craftsmanship and client service. Founded by Guy Sharvit, whose f...

Home Renew 360

Home Renew 360

★★★★☆ 4.3 / 5 (258)
1500 W Carson St Ste 201, Long Beach CA 90810
General Contractors, Roofing

Home Renew 360 is a locally owned and operated Long Beach general contractor with over 30 years of combined experience serving the greater Southern California area. Our team of experienced project man...

NEMA Roofing

NEMA Roofing

★★★★★ 4.9 / 5 (135)
473 E Carnegie Dr Ste 200, San Bernadino CA 92408
Roofing

NEMA Roofing Solutions Inc. is a family-owned, high-end roofing contractor based in San Bernardino, led by father and son team Adam. Founded on principles of integrity and excellence forged from Adam'...

One Stop Roofing

One Stop Roofing

★★★★★ 4.7 / 5 (40)
2302 South Fairview Dr, Santa Ana CA 92704
Roofing, Waterproofing

One Stop Roofing is a family-owned roofing company based in Santa Ana, CA, serving Orange, Los Angeles, and Riverside Counties. As part of One Stop Development, which has been operating since 2008, we...

No Leaks Roofing

No Leaks Roofing

★★★★★ 5.0 / 5 (46)
Tustin CA 92782
Roofing

For over a decade, No Leaks Roofing has been the trusted local choice for homeowners and businesses in Tustin, CA. As a fully licensed, bonded, and insured company, we specialize in both residential a...



Estimated Roofing Service Costs in Ontario, CA

Emergency Leak TarpingEstimated Range
$439 - $589
Roof Health InspectionEstimated Range
$169 - $229
Minor Roof Leak RepairEstimated Range
$634 - $849
Asphalt Shingle ReplacementEstimated Range
$12,239 - $16,329
Seamless Gutter InstallEstimated Range
$2,739 - $3,659

Methodology: Estimates are dynamically generated using labor multipliers derived from 2025 BLS OEWS (SOC 47-2181) data for Ontario. Prices include standard parts and labor adjusted for 2026 economic projections.

Question Answers

What makes a roof resilient against Ontario's wind storms?

Ontario's 110 mph Ultimate Design Wind Speed Zone requires roofs to withstand atmospheric river events. Class 4 impact-rated shingles are a financial necessity—they resist hail and wind-driven debris damage, reducing insurance claims. Proper installation with enhanced decking attachment and sealed roof edges prevents uplift during December-February peak storms, protecting your home's structural integrity.

Why are my homeowner insurance premiums rising so much in Ontario?

Insurance premiums in Ontario have increased by 18% due to higher claims from storm damage. Upgrading to an IBHS FORTIFIED Home standard roof directly lowers your bill by qualifying for available credits. These roofs meet enhanced wind and water resistance requirements, reducing insurer risk and passing savings to homeowners through lower premiums and potential deductible reductions.

My roof is leaking during a storm. How quickly can a contractor respond?

Emergency tarping crews can typically arrive within 35-45 minutes. From Ontario Town Square, they take I-10 directly to your neighborhood, prioritizing active leaks to prevent structural damage. Immediate tarping secures the compromised area until permanent repairs can be scheduled, minimizing water intrusion and protecting interior finishes from costly secondary damage.

Should I consider solar shingles instead of traditional asphalt in 2026?

With NEM 3.0 and the 30% Federal ITC, solar shingles offer energy generation but cost more upfront than architectural asphalt. Traditional shingles remain practical for Ontario's low hail risk, while solar options provide long-term savings on electricity bills. Evaluate based on your energy usage, roof orientation, and whether immediate storm resilience or gradual energy independence aligns with your priorities.

How do modern roof inspections differ from traditional methods?

Standardized aerial imagery and AI-assisted measurements identify sub-surface moisture in asphalt shingles that traditional walk-overs miss. This technology detects early-stage water intrusion under the surface, revealing compromised decking areas before visible leaks occur. In Ontario's climate, this proactive approach prevents extensive damage by addressing issues during dry periods, saving homeowners from emergency repairs.

My Ontario home was built around 1979. Why does my asphalt shingle roof need replacement now?

Roofs in Downtown Ontario average 47 years old, exceeding the 25-30 year lifespan of architectural asphalt shingles. On 1/2 inch CDX plywood decking, decades of UV exposure and moisture cycles from atmospheric river events degrade the shingle's protective granules and adhesive strips. This leads to curling edges, granule loss, and compromised water resistance, making replacement necessary to prevent decking rot and interior water damage.

What are the current code requirements for roofing in Ontario?

The Ontario Building and Safety Department enforces the 2022 California Residential Code, requiring specific ice and water shield offsets and flashing details. Contractors must hold CSLB licensing for compliance. These standards mandate sealed roof edges and enhanced underlayment in vulnerable areas to prevent water intrusion, ensuring roofs withstand local climate conditions and meet insurance durability expectations.

Can poor roof ventilation cause problems in my Ontario home?

Improper ventilation on a 4/12 pitch roof leads to attic mold and reduced shingle lifespan. The 2022 California Residential Code requires specific intake and exhaust ratios to manage heat and moisture buildup. Inadequate airflow traps warm, humid air from living spaces, promoting mold growth on decking and accelerating shingle deterioration through thermal cycling and moisture absorption.

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