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Roof sealant application pros in Danville

AirTight Construction, Inc.

PO Box 6536
4.09(
26
)
Approved Pro

AirTight Construction, Inc.

PO Box 6536
4.09(
26
)
Approved Pro
Customers say: Quality work
Recommended by 92% of Angi customers
Recommended by 92% of HomeAdvisor customers
23 years of experience

At Airtight Construction, Inc., we provide a wide range of services. We specialize in roofing and we service both residential and commercial clients. Headquartered in Concord, our fully equipped and professional staff can meet any construction, renovation, or retrofit need; and can serve as a single point of contact for even the most complex or time constrained project. We are committed to a responsive delivery of flawless craftsmanship combined with the industry's best customer service. We bring a proven expertise and time tested techniques to every job site. While most companies rely on sub contractors, we have in house crews to handle any job.

"I initially hired Airtight Construction to replace my roof around August of 2020. Once airtight construction started working on the roof they informed me it was going to cost more. I was never given an estimate or a contract for the additional work. To date still no bill, though they ask for money continuously. While we are waiting for a roof inspection they started a kitchen remodel around sept. 2020. They removed my kitchen cabinets, replaced a few windows and did some electrical work. I began to worry about the work being done and called the city of Martinez for an inspection. They said some of the work Airtight Construction had done needed to be fixed. Things like Electrical Panel, the windows all needed to be removed because there was no sheeting. There are structural questions about how some of the beams they installed are going to be supported.. I now know no permits were pulled for the kitchen remodel,. though I asked for permits several times. I am now having to spend more money to hire new contractors to complete the job."

Karen D on September 2020

At Airtight Construction, Inc., we provide a wide range of services. We specialize in roofing and we service both residential and commercial clients. Headquartered in Concord, our fully equipped and professional staff can meet any construction, renovation, or retrofit need; and can serve as a single point of contact for even the most complex or time constrained project. We are committed to a responsive delivery of flawless craftsmanship combined with the industry's best customer service. We bring a proven expertise and time tested techniques to every job site. While most companies rely on sub contractors, we have in house crews to handle any job.

"I initially hired Airtight Construction to replace my roof around August of 2020. Once airtight construction started working on the roof they informed me it was going to cost more. I was never given an estimate or a contract for the additional work. To date still no bill, though they ask for money continuously. While we are waiting for a roof inspection they started a kitchen remodel around sept. 2020. They removed my kitchen cabinets, replaced a few windows and did some electrical work. I began to worry about the work being done and called the city of Martinez for an inspection. They said some of the work Airtight Construction had done needed to be fixed. Things like Electrical Panel, the windows all needed to be removed because there was no sheeting. There are structural questions about how some of the beams they installed are going to be supported.. I now know no permits were pulled for the kitchen remodel,. though I asked for permits several times. I am now having to spend more money to hire new contractors to complete the job."

Karen D on September 2020


Avatar for Universal Builder Co. - San Jose

Universal Builder Co. - San Jose

1999 South Bascom Ave
4.39(
41
)
Approved Pro

Universal Builder Co. - San Jose

1999 South Bascom Ave
4.39(
41
)
Approved Pro
Customers say: Quick response
175 local quotes requested
28 years of experience

We pride our company on reliability, great communication, integrity, and quality work. We are experts in our trade and will do our best to keep you as educated as we can on your particular task or project. With over 20 years of experience in the roofing and general construction, our roofing team can quickly identify roofing issues to repair. As with all of our services, we guarantee our work and promise to repair the issue the right way the first time, every time. We look forward to earning your business!

"Quick estimate friendly people job was done quick"

Edward H on October 2024

We pride our company on reliability, great communication, integrity, and quality work. We are experts in our trade and will do our best to keep you as educated as we can on your particular task or project. With over 20 years of experience in the roofing and general construction, our roofing team can quickly identify roofing issues to repair. As with all of our services, we guarantee our work and promise to repair the issue the right way the first time, every time. We look forward to earning your business!

"Quick estimate friendly people job was done quick"

Edward H on October 2024


Avatar for Frontline Roofing, Inc.

Frontline Roofing, Inc.

12669 San Pablo Ave #107
4.69(
27
)
Approved Pro

Frontline Roofing, Inc.

12669 San Pablo Ave #107
4.69(
27
)
Approved Pro
Customers say: Quality work
Recommended by 92% of Angi customers
Recommended by 92% of HomeAdvisor customers
254 local quotes requested

At FRONTLINE ROOFING INC, we're all about delivering top-notch quality in everything we do. Our values are simple yet powerful: fairness, honesty, and taking personal responsibility. What truly makes us stand out is our dedication to not just meeting, but exceeding customer expectations.But above all, it's our genuine care for our customers that drives us: we listen, we understand, and we make sure their needs are at the heart of everything we do.

"Great"

Gopal Y on August 2024

At FRONTLINE ROOFING INC, we're all about delivering top-notch quality in everything we do. Our values are simple yet powerful: fairness, honesty, and taking personal responsibility. What truly makes us stand out is our dedication to not just meeting, but exceeding customer expectations.But above all, it's our genuine care for our customers that drives us: we listen, we understand, and we make sure their needs are at the heart of everything we do.

"Great"

Gopal Y on August 2024


Avatar for Journey Builders

Journey Builders

1897 Concourse Dr.
4.59(
107
)
Approved Pro

Journey Builders

1897 Concourse Dr.
4.59(
107
)
Approved Pro
Customers say: Quick response
Recommended by 90% of Angi customers
Recommended by 90% of HomeAdvisor customers
1278 local quotes requested

CAP INC is dedicated to providing our customers with the best quality and craftsmanship. We are here to build relationships with our customers and communities and to provide our employees with a great place to work. We look forward to working with you.

"Good customer service, good job on the roof, but very expensive in my view, $36K on a 1550 sq ft home plus about another roughly 700 sq ft garage and patio."

John K on April 2025

CAP INC is dedicated to providing our customers with the best quality and craftsmanship. We are here to build relationships with our customers and communities and to provide our employees with a great place to work. We look forward to working with you.

"Good customer service, good job on the roof, but very expensive in my view, $36K on a 1550 sq ft home plus about another roughly 700 sq ft garage and patio."

John K on April 2025


Avatar for Atom Builders, Inc.

Atom Builders, Inc.

3455 Ocean View Blvd, Suite 200
4.75(
67
)
Approved Pro

Atom Builders, Inc.

3455 Ocean View Blvd, Suite 200
4.75(
67
)
Approved Pro
Customers say: Quick response
270 local quotes requested
22 years of experience

We are a locally owned and operated company that values honesty and integrity, and treats your project as if it were our own. We offer a variety of services that are customization to each individual project. You will find us to be competitively priced, paying close attention to the details of each and every project that we are involved with. We look forward to building lasting relationships, and guarantee your satisfaction!

"I did not use this company, but feel as if they were trying to rob me of my money. I was quotes $15,650 to complete the roof sealing when I should have been paying no more than $1000 for my mobile home "

Minerva A on September 2025

We are a locally owned and operated company that values honesty and integrity, and treats your project as if it were our own. We offer a variety of services that are customization to each individual project. You will find us to be competitively priced, paying close attention to the details of each and every project that we are involved with. We look forward to building lasting relationships, and guarantee your satisfaction!

"I did not use this company, but feel as if they were trying to rob me of my money. I was quotes $15,650 to complete the roof sealing when I should have been paying no more than $1000 for my mobile home "

Minerva A on September 2025


Avatar for Lifetime Roofing & Renovation, Inc.

Lifetime Roofing & Renovation, Inc.

333 Cobalt Way
4.71(
143
)
Approved Pro

Lifetime Roofing & Renovation, Inc.

333 Cobalt Way
4.71(
143
)
Approved Pro
Super Service Award
Customers say: Super punctual
305 local quotes requested
15 years of experience

"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!"

"Needed to have our roof replaced. Lifetime Roofing is great! Gui from Lifetime stopped by the same day I called in for an estimate, and he was able to get us a very competitive price. Gui regualrly checked in to provide us updates on the status (permitting, install progress, etc.) and to see if we had any questions or issues. The crew was fantastic. Clean and quick. The best part? The City of Mt. View told Lifetime to install 20 vents on a 2,500 square foot roof!!! Lifetime spent time with the inspector and got that down to 5 vents and ridge vents. Very helpful! Overall, a wonderful experience."

Peter S on July 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!"

"Needed to have our roof replaced. Lifetime Roofing is great! Gui from Lifetime stopped by the same day I called in for an estimate, and he was able to get us a very competitive price. Gui regualrly checked in to provide us updates on the status (permitting, install progress, etc.) and to see if we had any questions or issues. The crew was fantastic. Clean and quick. The best part? The City of Mt. View told Lifetime to install 20 vents on a 2,500 square foot roof!!! Lifetime spent time with the inspector and got that down to 5 vents and ridge vents. Very helpful! Overall, a wonderful experience."

Peter S on July 2025


Avatar for Diamond Ridge Roofing Systems

Diamond Ridge Roofing Systems

123 Spyglass Hill Rd
4.67(
39
)
Approved Pro

Diamond Ridge Roofing Systems

123 Spyglass Hill Rd
4.67(
39
)
Approved Pro
Customers say: True professional
230 local quotes requested
17 years of experience

Diamond Ridge Roofing Systems 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.

"work was nicely done"

Kensing w on August 2025

Diamond Ridge Roofing Systems 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.

"work was nicely done"

Kensing w on August 2025


Avatar for R&R Roofing

R&R Roofing

407 Bayview Drive
4.29(
7
)
Approved Pro

R&R Roofing

407 Bayview Drive
4.29(
7
)
Approved Pro
Customers say: Super punctual
403 local quotes requested
3 years of experience

30+ yrs of combined Roofing experience. R&R has seen it all. Asphalt Shingle Roof - Concrete/Clay Tile Roof - Woodshake/CedarShake Roof - Stone Coated Steel Metal Roof - TPO - Modified Bitumen Torchdown. ROOF REPAIRS - ROOF REPLACEMENTS - ROOF MAINTENANCE SKYLIGHTS - GUTTERS - FASCIA - DRAIN REPAIRS

"Oh, it went very well with Jacob and his crew. They did an excellent job in the whole roof replacement. Great job thanks."

Farookh m on February 2025

30+ yrs of combined Roofing experience. R&R has seen it all. Asphalt Shingle Roof - Concrete/Clay Tile Roof - Woodshake/CedarShake Roof - Stone Coated Steel Metal Roof - TPO - Modified Bitumen Torchdown. ROOF REPAIRS - ROOF REPLACEMENTS - ROOF MAINTENANCE SKYLIGHTS - GUTTERS - FASCIA - DRAIN REPAIRS

"Oh, it went very well with Jacob and his crew. They did an excellent job in the whole roof replacement. Great job thanks."

Farookh m on February 2025


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
798 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 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
1886 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

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FAQs for roof sealant application projects in Danville, CA

A roof coating system lasts between 10 and 20 years. With a premium coating and regular maintenance—like inspections and touch-ups—your roof will stay protected against weather damage and water intrusion. This enhances its durability and preserves its structural integrity throughout its lifespan. Make sure to keep in contact with a roof coating pro so that you don’t miss regulating resealing. 

You should recoat or reseal your roof every four to six years. Maintaining a consistent recoating schedule preserves the integrity of the protective seal and prevents moisture penetration and material degradation. High-quality, built-up roof systems require this interval, and if an EPDM roof begins to leak, replacing the coating becomes necessary to restore full protection.

A roof coating can seal small cracks and stop minor water infiltration, helping to prevent roof leaks. While the coating enhances the roof’s durability and prevents early signs of leakage, it does not replace the need for full-scale repairs when substantial structural damage exists. Professional evaluation and repair are required to resolve significant water intrusion and ensure your roof retains long-lasting protection.

The Danville, CA homeowners’ guide to roof sealant applications

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

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