Principle Roofing

Jason H.

Dereck gave us a fair price and the roof looks great! He went out of his way to make sure we understood what they were doing, and communicated with our other contractors as needed. They even painted our roof pipes, new and old, to match the rest of the roof.

I'll highly recommend this company in the future, and will use them again if I'm still kicking in 30 years!

Elena G.

We had a leak and called Dereck. He promised to come in the afternoon. He came at the end of the day and the only thing that he did - gave advice to fix it ourselves. Was not interested in any projects from fixing a leak or redoing the roof completely.

Ellie D.

Noticed a leak around a lighting unit in my kitchen, and since I'd had Principle re-roof the place 3 years ago I gave them a call. It was a Sunday morning so I didn't expect to do more than leave a message to set up an appointment later. Instead I talked right to Mr. Loi who got to my house before lunchtime and, in the pouring rain, went up on the roof to find a cracked vent that was causing the trouble. He sealed it up and told me to contact him if there were any future problems, and that the roof was guaranteed for 5 years so no charge. I can't tell you what a weight was lifted off my shoulders. If you need a roofer I really can't recommend Principle more highly.

Alexander L.

Derek worked very professionally when he and his team conducted the re-roofing works for my old house in west San Jose late March. I will strongly recommend Principle Roofing to my local friends due to Derek's excellence.

Rf W.

The only company that sent a email refusing to bid. My roof is not configured to his capabilities.Most roofing companies do not contact at all and leave you with no bids. Principle Roofing is very considerate to the homeowner.

Travis M.

Had a roof put on by Principle Roofing in 2013. We have a pretty standard ranch burger single story home so not very challenging.

Dereck Loi, the owner came out to bid on the project. We went with him given our budget as well as his experience with the Decra metal roofing system.

Fast forward to the 2014 rain deluge and to our surprise, our new roof sprung a leak! Our 20+ year old cedar shake roof hasn't leaked ever. We were bummed.

This is when you get to really see what a company's true worth is. A call to Dereck and the next day, he was up on the roof assessing the leak. He's got it fixed now so with the coming rain storms, we feel very confident the newly repaired roof will last for many leak free years to come.

Liang C.

I had 4 roofers to come to estimate the work of reroofing my home, Dereck Loi from Principle Roofing gave me a very good quote. It was not the cheapest quote, but I still chose him based on his knowledge and attitude. Dereck truly knows the roofing stuff, he paid good attention to every specific detail issue of my house. Both my wife and I feel he is a trustworthy professional. Our feeling is absolutely right. My home reroofing project was completed today, Both my wife and I really like the quality and process of Dereck's work. I decide to write this review to share my joy and recommend strongly for Dereck's business. Please note that my wife is very detail oriented. We had many remodeling projects for this house and the other house, every main part of the current home was changed once or even twice. So far only this project pleases us in both quality and price. If you want to choose a roofer to replace your old roof, this is the right choice.

Cheney G.

I asked 6 roofers to give me estimation. 3 of them do not do metal roof. Among the rest three, Derek Loi gave me the lowest price. But I chose to trust him because after talked to him quite a few times, I feel he is a real roofing professional. He knows how to do it. He has various insurances; He has long term roof workers. He answered my questions patiently.
It turned out my metal roof is very good.I am satisfied.
If you need to find someone to do your roof, Dereck is the right guy.

Lucia S.

I recently put my house on the market, and, at the inspection, they found some problems with the shingles, even though the roof was only six years old. I had to correct the problem right away, and so I called Dereck Loi from Principle Roofing. Even though he was busy, he managed to find time for me on short notice. He came to do the work promptly and did an excellent job at a very reasonable price. He always answered the phone right away and was never annoyed by my many phone calls. Dereck Loi is an excellent roofer and very professional, and I recommend him highly!

Jeff S.

Principle Roofing just finished a re-roof of our house and detached garage. They were able to work around our schedule which was very important. They did a great job! My neighbors have been stopping by to ask who did our new roof and asking for the phone number. I highly recommend Principle Roofing!