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TRUSTED BY KNIGHTSEN, CA HOMEOWNERS

  • Average homeowner rating star icon4.5
    Average homeowner rating
  • Verified reviews icon274
    Verified roofing services reviews

Find Roofers in Knightsen

Avatar for Sierra Roofing & Solar

Sierra Roofing & Solar

6955 Sierra Ct
4.77(
44
)
Approved Pro

Sierra Roofing & Solar

6955 Sierra Ct
4.77(
44
)
Approved Pro
Customers say: True professional
Recommended by 93% of Angi customers
Recommended by 93% of HomeAdvisor customers
125 local quotes requested

As innovators and leaders in modern roofing and solar techniques, we can assure our past and future customers that our 100% Satisfaction, Leak-Free Guarantee stands strong. From your initial consultation with our Roofing and Solar Specialists, to the high quality work performed by our expert Technicians, you will enjoy the professionalism of Sierra Roofing and Solar.

"everything was done as promised"

Alexander B on May 2025

As innovators and leaders in modern roofing and solar techniques, we can assure our past and future customers that our 100% Satisfaction, Leak-Free Guarantee stands strong. From your initial consultation with our Roofing and Solar Specialists, to the high quality work performed by our expert Technicians, you will enjoy the professionalism of Sierra Roofing and Solar.

"everything was done as promised"

Alexander B on May 2025


Avatar for America's Dream HomeWorks

America's Dream HomeWorks

7115 Watt Ave
4.09(
172
)
Approved Pro

America's Dream HomeWorks

7115 Watt Ave
4.09(
172
)
Approved Pro
Customers say: Quality work
263 local quotes requested
24 years of experience

America's Dream HomeWorks Is A Family-Owned Full Service Home Improvement Contractor In California Offering Complete Home Remodeling Services. We Help Homeowners And Property Owners With All Of Their Home Improvement Needs. With The Professional Knowledge And Vast Resources, We Are Able To Provide Our Customers With The Best Products, Unmatched Customer Service And Affordable Prices. Secondary Phone: Secondary 916.739.0996

"They didn't do what they said that they're gonna do. The paint job was spotty and it was unfinished cabinet work. I tried to call them to let know and they never even know who I am."

LeslieAnn G on August 2021

America's Dream HomeWorks Is A Family-Owned Full Service Home Improvement Contractor In California Offering Complete Home Remodeling Services. We Help Homeowners And Property Owners With All Of Their Home Improvement Needs. With The Professional Knowledge And Vast Resources, We Are Able To Provide Our Customers With The Best Products, Unmatched Customer Service And Affordable Prices. Secondary Phone: Secondary 916.739.0996

"They didn't do what they said that they're gonna do. The paint job was spotty and it was unfinished cabinet work. I tried to call them to let know and they never even know who I am."

LeslieAnn G on August 2021


Avatar for PRI-Premiere Roofing Inc

PRI-Premiere Roofing Inc

5662 La Ribera St
4.43(
7
)
Approved Pro

PRI-Premiere Roofing Inc

5662 La Ribera St
4.43(
7
)
Approved Pro
Customers say: Quick response
60 local quotes requested
9 years of experience

For years, Agapito has been providing roofing and exterior services in the Greater Bay area. We are certified, insured and bonded. We specialize in residential, commercial roofing and exterior services. Our roofing and exterior technicians are certified and trained in all the latest techniques and products. This knowledge sets us apart from other fly by night roofing and exterior companies who are less educated and take chances with your home.

"The inspector Jairo was fantastic. Very professional and got my inspection back to me fast and full. Very good service. I would recommend to anyone"

Joseph S on April 2025

For years, Agapito has been providing roofing and exterior services in the Greater Bay area. We are certified, insured and bonded. We specialize in residential, commercial roofing and exterior services. Our roofing and exterior technicians are certified and trained in all the latest techniques and products. This knowledge sets us apart from other fly by night roofing and exterior companies who are less educated and take chances with your home.

"The inspector Jairo was fantastic. Very professional and got my inspection back to me fast and full. Very good service. I would recommend to anyone"

Joseph S on April 2025


Avatar for Diamond Ridge Roofing Systems

Diamond Ridge Roofing Systems

1762 Technology Drive
5.00(
7
)
Approved Pro

Diamond Ridge Roofing Systems

1762 Technology Drive
5.00(
7
)
Approved Pro
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
94 local quotes requested

We offer free inspections/estimates to fix leaks, install, repair and replace a large variety of commercial and residential roofing and waterproofing systems such as: asphalt shingles, wood shingles and shakes, tiles, metal, torch applied modified bitumen cap sheets, elastomeric coatings, silicones, thermoplastic and thermoset single-ply membranes and more.

"Went great and quick. True pro’s."

Shane S on November 2024

We offer free inspections/estimates to fix leaks, install, repair and replace a large variety of commercial and residential roofing and waterproofing systems such as: asphalt shingles, wood shingles and shakes, tiles, metal, torch applied modified bitumen cap sheets, elastomeric coatings, silicones, thermoplastic and thermoset single-ply membranes and more.

"Went great and quick. True pro’s."

Shane S on November 2024


Avatar for Lifetime Roofing and Renovation

Lifetime Roofing and Renovation

333 COBALT WAY
4.73(
22
)
Approved Pro

Lifetime Roofing and Renovation

333 COBALT WAY
4.73(
22
)
Approved Pro
Customers say: Quick response
Recommended by 95% of Angi customers
Recommended by 95% of HomeAdvisor customers
116 local quotes requested

"Looking for a trusted roofing contractor in San Jose? Lifetime Roofing & Renovation, Inc. has been San Jose’s go-to roofing company since 2010. We provide expert roof repair, roof replacement, and new roof installation services for both homes and businesses. Whether it’s fixing leaks, replacing old shingles, or handling complete roof overhauls, no job is too big or small. Our experienced team ensures every roof is built to last — protecting your property and your investment. Call us today for a free, no-obligation estimate and speak directly with a roofing expert!"

"I was really pleased with the new roof job Lifetime Roofing and Renovation performed for my mom's house that I decided to hire them again for my house. Tony the project manager and his crew once again knocked it out of the park. The work done efficiently and and with quality/care. My wife and I are very pleased with how the project came out. The price point for concrete tiles is what I expected given the rising costs of material and labor."

Alden W on February 2025

"Looking for a trusted roofing contractor in San Jose? Lifetime Roofing & Renovation, Inc. has been San Jose’s go-to roofing company since 2010. We provide expert roof repair, roof replacement, and new roof installation services for both homes and businesses. Whether it’s fixing leaks, replacing old shingles, or handling complete roof overhauls, no job is too big or small. Our experienced team ensures every roof is built to last — protecting your property and your investment. Call us today for a free, no-obligation estimate and speak directly with a roofing expert!"

"I was really pleased with the new roof job Lifetime Roofing and Renovation performed for my mom's house that I decided to hire them again for my house. Tony the project manager and his crew once again knocked it out of the park. The work done efficiently and and with quality/care. My wife and I are very pleased with how the project came out. The price point for concrete tiles is what I expected given the rising costs of material and labor."

Alden W on February 2025


Avatar for UC SUNNY ROOFING INC

UC SUNNY ROOFING INC

116 Dana Ave
5.00(
3
)
Approved Pro

UC SUNNY ROOFING INC

116 Dana Ave
5.00(
3
)
Approved Pro
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
20 local quotes requested

UC SUNNY ROOFING INC is committed to excellence in every aspect of our business. We uphold a standard of integrity bound by fairness, honesty, and personal responsibility. Our distinction is the quality of service we bring to our customers. Accurate knowledge of our trade combined with ability is what makes us true professionals. Above all, we are watchful of our customers' interests and make their concerns the basis of our business.

"UC Sunny Roofing did a great job on my roof. Their pricing was very reasonable, and they kept everything clean and tidy throughout the project. Professional and easy to work with—I’d definitely recommend them."

Ani A on September 2025

UC SUNNY ROOFING INC is committed to excellence in every aspect of our business. We uphold a standard of integrity bound by fairness, honesty, and personal responsibility. Our distinction is the quality of service we bring to our customers. Accurate knowledge of our trade combined with ability is what makes us true professionals. Above all, we are watchful of our customers' interests and make their concerns the basis of our business.

"UC Sunny Roofing did a great job on my roof. Their pricing was very reasonable, and they kept everything clean and tidy throughout the project. Professional and easy to work with—I’d definitely recommend them."

Ani A on September 2025


"Sal and his crew were very professional, fast and did a great quality job on our roof. He explained in detail the costs and if any extra repairs for dry rot were needed. Highly recommend to any looking for work done. Thank you!! We are happy customers."

Frank G on February 2025

We specialize in roofing,roof leak repairs,stucco,painting,carpentry,cement, remodels. Our goal is for our customers to have a great experience, customer service and the best cualidad work at a affordable price

"Sal and his crew were very professional, fast and did a great quality job on our roof. He explained in detail the costs and if any extra repairs for dry rot were needed. Highly recommend to any looking for work done. Thank you!! We are happy customers."

Frank G on February 2025


"Clean and reliable"

Tamar L on October 2024

- Excellent Customer Service - Superior Craftsmanship - 15+ years in business - Family owned and operated - Competitive Pricing - Super Service Award Winner - Elite Preferred James Hardie Contractor - Andersen Certified

"Clean and reliable"

Tamar L on October 2024


"Very professional company and very clean. Work is top notch and I would recommend them to anyone I come in contact with. Great job"

Ron S on March 2024

Our company is Diamond Certified and rated A+ with the Better Business Bureau. We have many different finance options available.

"Very professional company and very clean. Work is top notch and I would recommend them to anyone I come in contact with. Great job"

Ron S on March 2024


Avatar for Diablo Roofing Service

Diablo Roofing Service

1101 W 10TH ST
5.00(
1
)
Approved Pro

Diablo Roofing Service

1101 W 10TH ST
5.00(
1
)
Approved Pro
61 local quotes requested
6 years of experience

For 15 solid years, our roofing team has been strong and fervent in providing our residential and commercial customers the excellent roofing services they deserve. Just recently in 2019, our team decided to consolidate all efforts to provide even better services for our residential and commercial customers in Antioch, CA. We introduce Diablo Roofing Services to the roofing industry that provides excellent yet honest roofing services! If you are thrilled to know about what this roofing contractor can do, stay faithfully on this page and find out!

"I’ve been having many issues with my roof over the past few years. I’ve had about 2 other companies try and repair my roof for me and none of them were able to fix it. Rogelio and his team knew exactly what to do. Their work was done AMAZINGLY and all done within my budget. I would recommend them to anyone that needs their roof fixed. 10/10 experience. "

Elizabeth C on July 2025

For 15 solid years, our roofing team has been strong and fervent in providing our residential and commercial customers the excellent roofing services they deserve. Just recently in 2019, our team decided to consolidate all efforts to provide even better services for our residential and commercial customers in Antioch, CA. We introduce Diablo Roofing Services to the roofing industry that provides excellent yet honest roofing services! If you are thrilled to know about what this roofing contractor can do, stay faithfully on this page and find out!

"I’ve been having many issues with my roof over the past few years. I’ve had about 2 other companies try and repair my roof for me and none of them were able to fix it. Rogelio and his team knew exactly what to do. Their work was done AMAZINGLY and all done within my budget. I would recommend them to anyone that needs their roof fixed. 10/10 experience. "

Elizabeth C on July 2025

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Roofing questions, answered by experts

The number of roof vents necessary for a 2,000-square-foot house depends on several factors. The calculation depends on the net free area within the attic and whether your municipality requires a 1/150 or a 1/300 ratio of venting square feet to attic square feet. If you install vents with a square-foot opening of one, you'll need either 14 or seven exhaust vents and an equal square-foot amount of intake vents.

You can damage your shingles if you use the wrong type of paint on them. You should always use acrylic latex paint specifically formulated for shingles. Other types of paint may trap moisture, which can cause bigger problems like rot and mildew. Considering that roof replacement costs $9,100 on average, it’s definitely best to avoid making this mistake.

Besides using the right paint, remember that painting your shingles will require increased maintenance.

If a home isn’t properly winterized, the pipes can freeze and burst, causing flooding and massive property damage. It can also leave your house susceptible to pests, which can infest it and cause significant damage. Winterizing a home can prevent many potential issues and save you money on costly repairs.

Using an ice and water shield underlayment under a metal roof is a good way to protect the roof and your home from damage in colder climates that see a lot of winter weather. Traditional underlayment isn’t effective underneath a metal roof, though, so be sure to install one specifically made for metal roofs to get the best protection.

The formula for calculating how many squares of roofing you need is pretty easy. Take the total amount of square footage and divide it by 100. With this formula in mind, a 2,000-square-foot roof would require 20 squares of roofing material to adequately cover it.

The Knightsen, CA homeowners’ guide to roofing services

From average costs to expert advice, get all the answers you need to get your job done.