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Roof sealant application pros in Altadena

Avatar for Harbor Westlake Roofing
Harbor Westlake Roofing
PO Box 593
5.00(
8
)
Approved Pro
Harbor Westlake Roofing
PO Box 593
5.00(
8
)
Approved Pro
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
6 years of experience

Here at Harbor Lake Roofing we are a fully licensed nad insured roofing company working with residential and commercial properties. No job is too large or small for us and we pride ourselves on our craftmanship and ability to keep jobs running smoothly. Call now for a free estimate.

"Danny was honest and very professional."

Chris F on April 2024

Here at Harbor Lake Roofing we are a fully licensed nad insured roofing company working with residential and commercial properties. No job is too large or small for us and we pride ourselves on our craftmanship and ability to keep jobs running smoothly. Call now for a free estimate.

"Danny was honest and very professional."

Chris F on April 2024


NRG Roofing Inc.
13412 Dyer Street
New on HomeAdvisorNew on Angi
Approved Pro
NRG Roofing Inc.
13412 Dyer Street
New on AngiNew on HomeAdvisor
Approved Pro
16 years of experience
Free onsite estimate

We take great pride in our experience, expertise, quality and customer service, that we provide to meet the consumer's needs. It is our mission to provide excellent workmanship, and complete customer satisfaction, from start to completion of a project. In order to understand the needs and expectations of our customers, we take great care to work and communicate, with every customer in a professional manner. Our reputation is based on service, safety and quality, regardless of how large, or small the job. Call us today!

We take great pride in our experience, expertise, quality and customer service, that we provide to meet the consumer's needs. It is our mission to provide excellent workmanship, and complete customer satisfaction, from start to completion of a project. In order to understand the needs and expectations of our customers, we take great care to work and communicate, with every customer in a professional manner. Our reputation is based on service, safety and quality, regardless of how large, or small the job. Call us today!


Avatar for Howard & Sons
Howard & Sons
1802 Commercenter W Unit C/D
4.51(
36
)
Approved Pro
Howard & Sons
1802 Commercenter W Unit C/D
4.51(
36
)
Approved Pro
Customers say: Quality work
Recommended by 94% of Angi customers
Recommended by 94% of HomeAdvisor customers
13 local quotes requested

With over 20 years of experience, we bring our expertise to every project. We are a family owned and operated company, and operate with the highest level of integrity, and promise a service that is professional and prompt, with a meticulous attention to detail. Call today for an estimate!

"Excellent. They a good job and on time. The crew was very courteous and polite."

William W on September 2021

With over 20 years of experience, we bring our expertise to every project. We are a family owned and operated company, and operate with the highest level of integrity, and promise a service that is professional and prompt, with a meticulous attention to detail. Call today for an estimate!

"Excellent. They a good job and on time. The crew was very courteous and polite."

William W on September 2021


Cal State Roofing
702 Monroe Way
4.33(
90
)
Approved Pro
Cal State Roofing
702 Monroe Way
4.33(
90
)
Approved Pro
Customers say: Quick response
Recommended by 91% of Angi customers
Recommended by 91% of HomeAdvisor customers
39 years of experience

Cal State Roofing is a family-owned and -operated business. We take pride in every job we do and guarantee 100% customer satisfaction. Call now for a free estimate! No job is too large or too small. We will meet or beat any company's price as long as we are matching apples to apples.. Just Call for your free Estimate

"Partial replacement of flat roof hot mopped, professionally completed. I would hire again if necessary."

Lloyd B on March 2020

Cal State Roofing is a family-owned and -operated business. We take pride in every job we do and guarantee 100% customer satisfaction. Call now for a free estimate! No job is too large or too small. We will meet or beat any company's price as long as we are matching apples to apples.. Just Call for your free Estimate

"Partial replacement of flat roof hot mopped, professionally completed. I would hire again if necessary."

Lloyd B on March 2020


Avatar for MUNOZ ROOF AND ROOF REMOVAL
MUNOZ ROOF AND ROOF REMOVAL
651 S Palm St #B
5.00(
1
)
Approved Pro
MUNOZ ROOF AND ROOF REMOVAL
651 S Palm St #B
5.00(
1
)
Approved Pro
6 years of experience
Free onsite estimate

Munoz Roof and Roof Removal is committed to providing superior quality and unparalleled customer service in all aspects of our business. Communication, transparency, quality, and your trust are very important to us! We believe every client contributes to the success and growth of our company. Earning your trust is more important to us than earning your business. We strive to stand above the competition by providing you with a quality consultation from an expert roofer, not a high pressure salesman. Our goal is to shake the roofing world by bringing in the best talent, materials, pricing, warranties, and staff available in the industry in order to respectfully earn your business. In return, we will set the standard — and change the way people feel about the roofing industry!

Munoz Roof and Roof Removal is committed to providing superior quality and unparalleled customer service in all aspects of our business. Communication, transparency, quality, and your trust are very important to us! We believe every client contributes to the success and growth of our company. Earning your trust is more important to us than earning your business. We strive to stand above the competition by providing you with a quality consultation from an expert roofer, not a high pressure salesman. Our goal is to shake the roofing world by bringing in the best talent, materials, pricing, warranties, and staff available in the industry in order to respectfully earn your business. In return, we will set the standard — and change the way people feel about the roofing industry!


Avatar for PREMIER ROOFING SOLUTIONS INC
PREMIER ROOFING SOLUTIONS INC
10219 Omelveny Ave 1/2
New on HomeAdvisorNew on Angi
Approved Pro
PREMIER ROOFING SOLUTIONS INC
10219 Omelveny Ave 1/2
New on AngiNew on HomeAdvisor
Approved Pro
1 years of experience
Free onsite estimate

We take great pride in our experience, expertise, quality, and customer service that we provide to meet the consumer's needs. It is our mission to provide excellent workmanship and complete customer satisfaction, from the start to the completion of a project. In order to understand the needs and expectations of our customers, we take great care to work and communicate with every customer in a professional manner. Our reputation is based on service, safety, and quality, regardless of how large or small the job.

We take great pride in our experience, expertise, quality, and customer service that we provide to meet the consumer's needs. It is our mission to provide excellent workmanship and complete customer satisfaction, from the start to the completion of a project. In order to understand the needs and expectations of our customers, we take great care to work and communicate with every customer in a professional manner. Our reputation is based on service, safety, and quality, regardless of how large or small the job.


Avatar for CoastDesign & Build, Inc.
CoastDesign & Build, Inc.
6602 El Cajon Blvd Suite #D
New on HomeAdvisorNew on Angi
Approved Pro
CoastDesign & Build, Inc.
6602 El Cajon Blvd Suite #D
New on AngiNew on HomeAdvisor
Approved Pro
246 local quotes requested
22 years of experience

Coastdesign & Build is a locally owned and operated company that values honesty and integrity in all aspects of our business. Our dedicated team of professionals have over 5 years of hands on experience, to provide innovative ideas and suggestions tailored to your projects. Our services are customized to your individual needs, paying close attention to the details of each project that we are involved with. Please feel free to contact us today!

Coastdesign & Build is a locally owned and operated company that values honesty and integrity in all aspects of our business. Our dedicated team of professionals have over 5 years of hands on experience, to provide innovative ideas and suggestions tailored to your projects. Our services are customized to your individual needs, paying close attention to the details of each project that we are involved with. Please feel free to contact us today!


Avatar for Citium Roofing Solutions
Citium Roofing Solutions
372 Arden Ave Unit 108
5.00(
6
)
Approved Pro
Citium Roofing Solutions
372 Arden Ave Unit 108
5.00(
6
)
Approved Pro
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
564 local quotes requested

Welcome to Citium Roofing Solutions, your trusted roofing contractor serving Southern California. Our expert team of roofers specializes in a full spectrum of roofing services for both residential and commercial properties. Whether you need a roof repair, installation, or replacement, our skilled roofers are dedicated to delivering top-notch solutions tailored to your needs. As your local roofing contractor, we're committed to providing prompt and reliable service, ensuring your satisfaction with every project. Contact us today for a free estimate and discover why we're the go-to roofer near you! Discounts for Senior Citizens and Veterans!

"The job was scheduled and went as planned. Hank from Citium guided us through the whole process and was very responsive throughout the project."

Norma M on February 2025

Welcome to Citium Roofing Solutions, your trusted roofing contractor serving Southern California. Our expert team of roofers specializes in a full spectrum of roofing services for both residential and commercial properties. Whether you need a roof repair, installation, or replacement, our skilled roofers are dedicated to delivering top-notch solutions tailored to your needs. As your local roofing contractor, we're committed to providing prompt and reliable service, ensuring your satisfaction with every project. Contact us today for a free estimate and discover why we're the go-to roofer near you! Discounts for Senior Citizens and Veterans!

"The job was scheduled and went as planned. Hank from Citium guided us through the whole process and was very responsive throughout the project."

Norma M on February 2025


Avatar for Roofing Angels
Roofing Angels
4869 Topanga Canyon Bl. #4
5.00(
16
)
Approved Pro
Roofing Angels
4869 Topanga Canyon Bl. #4
5.00(
16
)
Approved Pro
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
313 local quotes requested

We offer a variety of roofing services. We guarantee your satisfaction, and we won’t leave until the job is done right. We pride ourselves on the quality of work we provide, while delivering great customer service! Check out all the services we offer below and call -or- click to schedule an estimate today!

"I don’t normally write reviews, but I had such a great experience with Roofing Angels that I had to share. Chuck was amazing—from the first meeting, he made sure I understood everything about the process and helped me choose the right materials for my home. No pushy sales tactics, just honest advice. His crew was super professional and hardworking. They showed up early, worked long hours, and always made sure to clean up at the end of the day. I was expecting a lot of noise and disruption, but honestly, it wasn’t bad at all. Now that the job is done, I can’t stop admiring my new roof! It looks perfect, and I feel a lot better knowing I won’t have to worry about leaks anymore. If you’re looking for a stress-free roofing experience with people who actually care, I can’t recommend Roofing Angels enough!"

George M on February 2025

We offer a variety of roofing services. We guarantee your satisfaction, and we won’t leave until the job is done right. We pride ourselves on the quality of work we provide, while delivering great customer service! Check out all the services we offer below and call -or- click to schedule an estimate today!

"I don’t normally write reviews, but I had such a great experience with Roofing Angels that I had to share. Chuck was amazing—from the first meeting, he made sure I understood everything about the process and helped me choose the right materials for my home. No pushy sales tactics, just honest advice. His crew was super professional and hardworking. They showed up early, worked long hours, and always made sure to clean up at the end of the day. I was expecting a lot of noise and disruption, but honestly, it wasn’t bad at all. Now that the job is done, I can’t stop admiring my new roof! It looks perfect, and I feel a lot better knowing I won’t have to worry about leaks anymore. If you’re looking for a stress-free roofing experience with people who actually care, I can’t recommend Roofing Angels enough!"

George M on February 2025


Avatar for Sandoval Roofing And Repairs
Sandoval Roofing And Repairs
3117 Thoroughbred Street
5.00(
6
)
Approved Pro
Sandoval Roofing And Repairs
3117 Thoroughbred Street
5.00(
6
)
Approved Pro
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
1338 local quotes requested

At Sandoval Roofing we specialize in residential and commercial roofing. With over 30 years of experience in the building industry, we have established ourselves as a reliable and trusted contractor in the region. From stylish tile installations to durable shingle applications, we've got your roof covered. Our skilled team excels at efficient and effective roof repairs, ensuring your peace of mind. Trust us for top-notch craftsmanship, quality materials, and customer satisfaction.   Our clients' satisfaction is our top priority. We work closely with them to ensure that their vision is fully realized. Communication is key, do not hesitate to contact us. We are happy to help you.

"If I could give a 10 out of 5 stars I would. Argo from Sandoval roofing came out and gave me a quote which was very reasonable. After getting a few more quotes, we decided to go with Sandoval roofing to completely redo our roof and patio (new sheathing, paper, and tiles). We decided to go with them because they were quick to respond through call and text (even late at night), gave a good price, are licensed and bonded through CSLB, and have roofers with 25+ years experience (their roofer Francisco was awesome) They were able to start within a week of giving the quote, and finished the whole job in 4 days. The two bosses were on site to overview the job which I appreciated as well. Overall I could not be happier with this company. With all the bad contractors there are now a days it’s hard to find someone who does quality work at a good price, but Sandoval roofing did so. Sorry for the ramble, but they finished my roof today and I’m very pleased with it so I thought I’d share my whole experience."

Zachary H on June 2025

At Sandoval Roofing we specialize in residential and commercial roofing. With over 30 years of experience in the building industry, we have established ourselves as a reliable and trusted contractor in the region. From stylish tile installations to durable shingle applications, we've got your roof covered. Our skilled team excels at efficient and effective roof repairs, ensuring your peace of mind. Trust us for top-notch craftsmanship, quality materials, and customer satisfaction.   Our clients' satisfaction is our top priority. We work closely with them to ensure that their vision is fully realized. Communication is key, do not hesitate to contact us. We are happy to help you.

"If I could give a 10 out of 5 stars I would. Argo from Sandoval roofing came out and gave me a quote which was very reasonable. After getting a few more quotes, we decided to go with Sandoval roofing to completely redo our roof and patio (new sheathing, paper, and tiles). We decided to go with them because they were quick to respond through call and text (even late at night), gave a good price, are licensed and bonded through CSLB, and have roofers with 25+ years experience (their roofer Francisco was awesome) They were able to start within a week of giving the quote, and finished the whole job in 4 days. The two bosses were on site to overview the job which I appreciated as well. Overall I could not be happier with this company. With all the bad contractors there are now a days it’s hard to find someone who does quality work at a good price, but Sandoval roofing did so. Sorry for the ramble, but they finished my roof today and I’m very pleased with it so I thought I’d share my whole experience."

Zachary H on June 2025

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Showing 1-10 of 968

FAQs for roof sealant application projects in Altadena, 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 Altadena, 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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Jun 17, 2025
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Flat roof replacement costs are based on factors such as roof type, material, potential repairs, labor, and accessibility. See how much you could spend on this project.
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