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Find Natural slate roofing installers and replacers in Portola Valley

Avatar for Imperia Roofing and Exteriors
Imperia Roofing and Exteriors
5.0(
79
)

Serving Portola Valley, CA and surrounding areas

Approved

In business since 2016

Free estimates

Emergency services offered

"Our roof had been on the house for decades and it was finally time to replace it. Sean from Imperia Roofing inspected everything and walked us through the process. The crew worked efficiently and finished the project right on schedule. The new roof looks great and the whole process was easy."
Old Roof
Old Roof
Old Roof
New Roof
Old Roof

+458

63 neighbors recently requested a quote
Avatar for Above All Roofing Solutions Inc
Above All Roofing Solutions Inc
4.2(
147
)

Serving Portola Valley, CA and surrounding areas

Approved

In business since 1996

Free estimates

Emergency services offered

"Applied their service for the listed $99 coupon. However, was told it didn't cover the built up roof. Project was cancelled. Did get a quick call for the feedback."
Additional Photos
Additional Photos
Additional Photos
14 neighbors recently requested a quote
Recommended by85%of homeowners
Positive Results Roofing
5.0(
25
)

Serving Portola Valley, CA and surrounding areas

Approved

In business since 1983

Free estimates

Emergency services offered

"Pete (the owner) and his roofing crew (Genaro, Alberto, Pedro) were great! Pete replied promptly to my initial inquiry and came out right away to look at the roof. Following that, it took somewhat longer than I had hoped to get an initial bid and to actually start the job, but his bid turned out to be lower than the others, and I could see that the delay was for the right reason -- Pete always prioritizes the roof he's already working on to make sure it's done well and as quickly as possible, so a house doesn't stay unprotected for longer than necessary. Once they finally finished earlier projects and started working on our roof, they were 100% on task from start to finish. They are a small company and ours was a complex, 4000+ square foot roof that required ordering special materials along the way, so it took about a month to complete the job with 3 guys working 40 hours per week. However, I really appreciated the way they always started promptly on time each day and worked closely with my wife and I throughout the entire process to make sure work was being done exactly as we (and the City's historic rules) needed it done. Pete and his crew were friendly and very accommodating of special requests related to the historic peculiarities of our house, skylights, neighbor's concerns about parking, etc. Many parts of the roof required creative, on-the-fly problem solving, due to the non-standard construction of our 1800's house. Genaro, especially, was great at innovative problem solving and did beautiful work, but everyone on the team was super dedicated, hard working, and skilled. We have already had one heavy downpour since the new roof went on, and not a single drop got through! I can confidently recommend Positive Results Roofing if you are looking for a small, personable company that is licensed and bonded and does quality roof replacements or repairs for a reasonable price."
6 neighbors recently requested a quote
Recommended by100%of homeowners
Avatar for Lifetime Roofing & Renovation, Inc.
Lifetime Roofing & Renovation, Inc.
4.7(
163
)

Serving Portola Valley, CA and surrounding areas

Approved

Super Service Award Winner

In business since 2010

Free estimates

Emergency services offered

"I am writing to wholeheartedly recommend Lifetime Roofing and Renovation, specifically under the leadership of Project Manager Yonas Mesmer. My recent experience with their services was nothing short of outstanding. From the outset, Yonas and his team demonstrated professionalism and efficiency that is increasingly rare in todayâ s construction industry. They were thorough in their assessments, ensuring that every detail was accounted for before work began. Throughout the project, the team maintained a pleasant demeanor, which made the experience much more enjoyable. They communicated clearly and effectively, keeping me informed of progress and any necessary adjustments. It was evident that they valued my input and worked collaboratively. One aspect that truly set Lifetime Roofing apart was their commitment to cleanliness and care. Each day, they meticulously cleaned up the worksite, which I greatly appreciated. Additionally, they went above and beyond by replacing inadvertently disturbed plants during the project. This thoughtful gesture, while not required, demonstrated their dedication to customer satisfaction and attention to detail. In summary, I highly recommend Lifetime Roofing and Renovation and Yonas Mesmer for any roofing or renovation needs. Their professionalism, efficiency, and exceptional customer service make them a stand-out choice."
Sierra Gary shingle
Shasta White Shingles
Sierra Gary shingle
Shasta White Shingles
Sierra Gary shingle

+30

Response time20 mins
322 neighbors recently requested a quote
Recommended by81%of homeowners
Avatar for Lifetime Roofing and Renovation
Lifetime Roofing and Renovation
4.6(
24
)

Serving Portola Valley, CA and surrounding areas

Approved

Super Service Award Winner

In business since 2010

Free estimates

Emergency services offered

"Tony the project manager did an excellent job we are very happy and satisfied. We did a full roof replacement. From start to finish, the entire process was smooth, professional, and stress-free."
Roofing Project
Roof Type: shingles and flat areas TPO
After-Job type flat roof and fecia boards
Roof Type: shingles and flat areas TPO
-Job type flat roof and fecia boards

+31

32 neighbors recently requested a quote
Recommended by95%of homeowners
Avatar for NewHaus Roofing and Construction
NewHaus Roofing and Construction
4.5(
281
)

Serving Portola Valley, CA and surrounding areas

Approved

In business since 1995

Free estimates

Emergency services offered

"I was trying to find a roofing company which can install quarry slates. Just one and only roofing company completed my new roof. Looks amazing. Nicely and professionally done. Highly Recommended"
Shingle Re Roof
Metal Roof
Metal Roof
Metal Roof
Metal Roof

+4

554 neighbors recently requested a quote
Recommended by54%of homeowners
Avatar for DS Roofing
DS Roofing
5.0(
9
)

Serving Portola Valley, CA and surrounding areas

Approved

In business since 2025

Free estimates

Emergency services offered

"I highly recommend DS Roofing! I needed a new roof for my detached garage. The old roof had multiple layers of old roofing and was in poor condition. DS Roofing came out and gave me a fair price for the job. The owner was very helpful and informative, answering all my questions. Once I selected the bid, the crew showed up within a few days and tore off the old roof and installed the new one very quickly. What impressed me the most was how clean the ground was after all the debris that fell during the removal process."
13 neighbors recently requested a quote
Avatar for Spotlight Roofing Inc
Spotlight Roofing Inc
5.0(
7
)

Serving Portola Valley, CA and surrounding areas

Approved

In business since 2012

Free estimates

Credit card accepted

"I had spotlight roofing repair my roof in concord last week and they finished the job in 1 day !! The crew was amazing and left the job clean . The price was fair and I recommend them for anyone who wants a good service ."
Project Photos
Project Photos
Project Photos
Project Photos
Project Photos

+14

47 neighbors recently requested a quote
Avatar for ATOM BUILDERS INC
ATOM BUILDERS INC
4.7(
80
)

Serving Portola Valley, CA and surrounding areas

Approved

In business since 2023

Free estimates

Emergency services offered

"I needed to get my roof repaired due to the high winds. A lot of shingles had flown off and I did not want to go through the water damage experience again. I reached out to Atom builders and they sent out their project manager, Mike. He was the best there is and thoroughly explained the entire process. The roof was done in 1 week and it looks magnificent. I highly recommend Atom Builders to anyone looking to get their roof replaced or repaired"
Tracy CA
Tracy CA
Tracy CA
Tracy CA
Tracy CA

+1

185 neighbors recently requested a quote
Recommended by17%of homeowners
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Showing 1-10 of 132
FAQs for natural slate roofing installation and replacement projects in Portola Valley, CA

A slate roof features thin tiles of natural stone installed over a solid deck and underlayment. Formed under intense heat and pressure, slate is exceptionally durable and delivers a distinctive, high-end look. Because the material weighs far more than asphalt, most homes need added structural support before installation. 

While upfront costs are higher and routine inspections are a must, many homeowners choose slate for its unmatched longevity and curb appeal.

Slate stands out for its 50- to 200-year life span, low maintenance, and classic aesthetic. It’s fire-resistant, energy-efficient, and often boosts resale value. 

On the flip side, slate runs far more per square foot than asphalt, weighs up to four times as much, and demands a contractor who specializes in the material. Tiles can crack on impact, and repairs cost more because the work is slow and precise. If your budget and structure can handle it, slate delivers top-tier performance for generations.

Natural and synthetic slate aim for a premium, stone-like appearance, whereas asphalt focuses on affordability. Real slate runs $10 to $30 per square foot installed and lasts up to 200 years; synthetic slate costs $10 to $15 and tops out at 50 to 100 years. 

Standard asphalt averages $3 to $8 per square foot and needs replacement every 20 to 30 years. If you want the slate look without the full price tag—or extra roof weight—synthetic is a solid middle ground.

With routine inspections and prompt repairs, a natural slate roof can last well beyond 100 years; some hard-slate installations reach the 200-year mark. Soft slate falls in the 50- to 125-year range, and synthetic products last 50 to 100 years. 

Remember, flashing, fasteners, and the underlying structure may need attention sooner than the stone itself. Severe hail or fallen limbs can also shorten life span, so schedule periodic checkups with a slate-qualified roofer.

If you plan to stay in your home long term—or want a standout selling point—slate delivers strong value. Although installation costs are high, owners often recoup 60% to 70% at resale and enjoy lower replacement cycles than asphalt. The stone’s durability, energy efficiency, and timeless curb appeal also appeal to eco-conscious buyers because fewer roofs end up in landfills. Just be sure your framing can handle the weight and that you budget for occasional specialty repairs.

Skip the DIY climb if you have a slate roof. Slate may be tough against the weather, but a single misplaced step can crack a tile and create a leak path. The surface also turns slick when wet, upping the risk of injury. Professional crews use staging and hook ladders that spread weight across multiple slates, protecting both the roof and the worker. To inspect or repair slate, call a roofer who specializes in the material.

The Portola Valley, CA homeowners’ guide to natural slate roofing installations and replacements

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