Cal-Pac Roofing
Company Overview
Your trusted source for stone-coated steel roofing systems in Northern California.
As the foremost stone-coated steel roofing contractor in Northern California, Cal-Pac Roofing brings unmatched expertise.
What sets us apart?
Having introduced stone-coated steel roofing systems to the U.S. more than 40 years ago, we lead the industry.
No one else matches our expertise in stone-coated steel roofing.
We provide services in San Jose, Campbell, Santa Clara, Los Gatos, and Sunnyvale, CA.
Reach out to us now to schedule a free in-home consultation and estimate with our expert staff.
Business Services
- Gutter addition
- Gutter installation
- Gutter replacement
- New roof installation
- Roof repair
- Roof replacement
- Reroofing
- Skylight installation
Business Location & Hours
Mon: | 9:00 AM - 6:00 PM |
Tue: | 9:00 AM - 6:00 PM |
Wed: | 9:00 AM - 6:00 PM |
Thu: | 9:00 AM - 6:00 PM |
Fri: | 9:00 AM - 6:00 PM |
Sat: | Closed |
Sun: | Closed |
Recommended Customer Reviews

I thought everything was fine with my roof, but not. Let's start when I checked out the roof after it was completed, caulking tubes were in the gutters. Then I noticed water stains on my ceiling. Found out from the guy who fixed the roof that Cal Pac workers did not properly install the roof around the fire place, thus water stains on my ceiling. Now i find out some of the wood under the roof is failing. I will have to replace the wood and replace the effected parts of the roof. Apparently, on some parts of the roof, longer pieces of wood was needed but the workers used the small pieces that have failed over time. Now I will need to pay to replace the lumber effected, the roof and painting my ceiling. I wish they cared more when they put a roof on.

The Cal-Pac team (Brian and Mike) who came out to do the job were fantastic. We had our roof tile reworked after so many years, had new gutters and drain pipes put in, replaced the turbines with a solar fan, and replaced an old skylight. The work was professionally done and we highly recommend Cal-Pac.

Excellent job installing stone-covered metal roofing. No leaks or call-backs. Roof is quiet during rain. Repaired wood sheathing as required.
Excellent post-job paperwork support by providing receipt copy 5 years after job completed.

Our shake roof was due for replacement, but a new shake roof is very expensive. We were ready to go with asphalt, seemingly the most common choice, despite our concerns that it would not insulate our home as well, plus we didn't like the overly regular pattern it presents, and yes, it doesn't look much like shake, even the thicker shingles.
Before we made a final choice, we decided to take a look at metal roofs since some of them look more like shake, and we had heard that they provide good insulation. Most research online, including EnergyStar.gov, convinced us that metal roofs are especially more effective in keeping the house cool in the summer. In addition, there is a roofing insulation product available whose web site says to not bother to use it unless there is an air space above it that a metal roof provides.
The roof replacement quote from Cal-Pac Roofing was essentially the same as the cost of the high-end (thicker to look somewhat more like shake) asphalt quote. Furthermore, one of the latest metal roof product designs looked very much like shake when we visited a couple of homes that Cal-Pac referred us to.
Tom Sparling is the owner of Cal-Pac roofing. He spent a over an hour riding around our neighborhood with us, helping us to identify metal roofs (we were confusing many ""fake-shake"" cement roofs for metal). Tom and a colleague designed a solar powered attic fan a few years back, and we had his crew replace our old, noisy, temperature controlled attic fan with this solar fan as well.
After a number of hot spells this summer, we are very happy with our choice of a metal roof. Also, a recent appraiser told me that he thought he had the wrong address until we was all the way up to the house because his notes told him that we had a metal roof and he was sure he was looking at shake.

After meeting with several roofing companies, we chose CAL-PAC. Tom was the deciding factor, he was really down to earth and listened to our project needs and was genuinely committed to working with us. Tom was great throughout, patient with questions and requests for change.
And Brain was the reward in our choice of CAL-PAC. He's a real craftsman and highly customer focused. I can't say enough about his level of commitment to getting the job done right. We had some structure sag in our garage affecting the roof install, and working with Brian to get it straightened out (literally) turned a bad situation into an almost painless one. His guidance and efforts were indispensable. As a design engineer and a bit of a perfectionist, I think I'm a pretty good judge of skilled workmanship...Brian's skill, craftsmanship and customer service impressed me a lot!

I have to rescind my previous positive comments on the job and change it to negative.
Allow me to describe why I changed my review on the roofing job done,
1. Six months after the roofing job was done I went up the roof to clean the gutters, I discovered that the eyebrow vents installed were of low quality or cheap solution.
The installed vents opening has mesh screen to block rodents from entering. But the screen was only secured on the bottom edge, and the other 3 edges of screen were not attached to vent body at all - so any rodents or birds could easily push in the screen and use the eyebrow vents as open gates into our house's attic. I took a trip to Home Depot to inspect the eyebrow vents they carried and found that all edges of screen were secured. This indicated that Cal-Pac used sub-par eyebrow vents.
When I informed Cal-Pac of the problem, they were responsive and sent out the foreman to work on this (as I mentioned in the original review). However, due to that the vents had already been installed and with the odd angles, the foreman was only able to do so much trying to apply some tar glue to screen edges. I could see that the screens were only barely attached to the sides with the glue, and He admitted to me that he could only do so much due to the odd angle. I thanked him knowing he tried. He left.
What I ended up doing myself was buying the Great Stuff with long tubes that allowed me to reach the inside of vents and securely glued all edges of screens to the vents.
That's the end of it. I did let my original positive review stands, for I figured that the company did make an effort to resolve the problem - though it was I really fixed the problem.
However, more problems came up...
2. Several months ago, I found that there were rats in the attic. Our house is stucco wall with steel roof. There was no decaying of stucco or hole on wall I could find. I crawled into the attic, looked up, and found there was a big gap of roof ridge not covered with mesh screen, easily see thru the roof, and rat poops deposited in area right beneath that opening. Also along the whole roof ridge it should be covered with 2-foot-wide mesh screen before tiles were installed on top to prevent rodents. However, the ridge was covered with two overlapped 1-foot-wide screen. The 2 screens only has tiny overlap (some area has 1/4"" overlap and some area doesn't have any overlap, and so has lots of openings between screens - open doors for rodents again).
I informed the owner of Cal-Pac of the problem, and got immediate denial from him, "" Rat proofing is not part of our warranty. The metal would not have shifted are the rats coming in through another chew hole."" I told him that there were no chew holes and the ridge screen was the problem. Then the owner responded that he would put the item on their list to check out.
That was more than 2 months ago, and no additional follow-up from company at all.
Because I couldn't remove and open up the whole roof ridge tiles, I started my own gruesome task crawling into attic to seal the ridge openings - as you know that California houses' attics, unlike east coast's, are small, tiny and not designed to provide easy human maneuvering. I ended up using the Great Stuff to seal the big gap and poly seal trying to glue 2 ridge screens together - not sure if it'll be sufficient.
3. during the patching process, I found that the solar vent fan wasn't turning at all. The motor made noise but fan blades not turning. Upon closer inspection, I found that one fan blade was stuck/stopped by the supporting bean inside the fan tube - the blade was bent when fan was installed and stopped the fan from running all this time. What a shitty installation. I bent the blade back, and it started turning.
I don't blame the workers. They tried and worked hard, but they were under time pressure - the workers were paid per job, not per day. However, the owner/company's focus on cost cutting is a problem. Things happen, but company should take responsibility in addressing installation problems. Cal-Pac wrote on contract that they provide 10-year workmanship warranty. But when warranty is actually called, where is the follow-up....????
I guess I won't have to deal with another roofing contractor or new roof in the near future, I just have to anticipate additional problems of this roof showing up. If you are going to get a new roof, I hope by sharing my experience might help you inspect the roof installation.

Mine was a small to medium size repair job, that like many had some real challenges. There was quite a bit of dry rot and some extensive wood damage, not to mention some things that were not done correctly in the first place and in a subsequent repair jobs by other companies. It took a while to get these guys out here but it was worth the wait, it is their busy season. Bryan, Sal and Mike were excellent to work with and did a great job. I made modifications and new requests as we went along and they were happy to accommodate. A talented and professional crew. Cleaned up every night and made sure that what they were doing was what I had in mind. Bryan even went beyond with some of the repair fixing a lot of problems caused by previous companies. I am extremely happy with their quality of work, the time it took them to complete the job and the results. If you are looking to repair an aging metal roof or install a new one, do yourself a favor and call Cal-Pac.

This a million star review!!! for Tom the owner of Cal-Pac Roofing and his crew Sal, Michael, Roberto, Brian. Tom and his crew has made our roof and our home Safe, Secure, and sooooo very Beautiful!!! When I searched for a company who can help us fix a steel roof leak, I called 3 companies. Tom was the only one willing to help us fix a steal roof leak and the many complications, the other two companies tried to sell us a new roof. We appreciate his integrity, honesty, and kindness. We also appreciate how friendly, congenial, and very easy going he is to work with. We had many repairs and renovations going on with other contractors during the time I contacted Tom. Our initial project was for roof repair leak and maintenance, new facia, gutter project, which was a 3 phase process because it had to be done in between a big stucco project in which stucco was placed on the soffit and other repairs. Also as Tom mentioned, steal roofs are meant to last 50 years and half way at 25 years which about how old our roof is, certain maintenance needs to done. Our roof is complicated one, as it has a hog valley effect in where the initial roofers didn't place the tiles correctly. Like I said, Tom was the only roofer willing to take the challenge in helping us correct this.
One of the many things we liked most about Tom is his patience and immediate responses to our needs in this 3 step phase process during the many months of our house renovations and repairs which was so very valuable!! We are so appreciative and grateful for his immediate responses; When we found out we had a roof leak (1st phase), he sent Brian the next day, immediately after our initial communications, for inspection. Then Sal and Michael came soon after to repair the roof leak and that's when we also met Tom in person; during the tear down of the fascia and gutters (2nd phase) Sal found dry rot in different places, he immediately had Sal fix it; Again just before the stucco company was to start, I hadn't realize the new fascia boards needed to put up before the stucco company started. I sent an email to Tom if his crew could come right away, he immediately sent Sal and Michael; And again his response was immediate when we discovered that past owners had not placed adequate vents and fans for the attic. His response time was immediate as to the different solutions. It has been incredible how fast he responded via emails and phone calls, even when he was on vacation in Europe it was fast!
His crew Sal, Michael, Roberto, and Brian are very hard workers, friendly and a delight to work with. His crew came early and immediately got the job done even the gutter crew were fast. I especially like how calm and easy it was to communicate and interact with Sal. Sal and all the crew did an Outstanding Job!!! on the roof repair, dry rot replacement, new fascia boards, gutters, gutter screen, solar fans, dormer vents, and they also replaced any loose nails with screws, they painted all the old exhaust vents, put new flashing, and just so many other things they did. They made our roof look sooo Beautiful!! that people who has came by asked if we have a new roof!!
Thank you sooooo very much Tom, Sal, Michael, Roberto, Brian, and gutter crew too....for everything you have done for us. We are very grateful and appreciative of your enduring patience, incredible fast responses, your friendliness, and all of your very hard work! Thank you so very much for making our roof Secure, Safe, and our home soooo very Beautiful!!!

Cal-Pac just replaced my roof one week ago. Tom is really nice person. Sal and Mike are great too. They worked on my roof for a week and did everything that we requested. The roof looks nice and the price is good. We really appreciate their service.

I would give them 10 stars if I could. What can I say other than pure excellence. Cal-Pac did our neighbors roof so we had a good idea of how the roof would turn out. But dealing with Tom and his crew made this so easy. He demonstrated integrity with expectations including cost, results and timelines. His crew of Sal and Mike were always on time and worked hard throughout the day. Both men were extremely polite, respected our home and knew we had two dogs that required the gate to be closed at all times. They cleaned the grounds EVERY day so there was no sign of them being there, other than the material stored that was required for the job. They respected our home and I honestly cannot think of one single thing that I would even have a small complaint on. All roofers/contractors should look to Cal-Pac as an example of professionalism and class. The roof looks beautiful and we already have other neighbors looking at hiring them so you better call quickly to reserve your spot. Tom... thank you so much. It truly has been a pleasure working with you.