Showroom open by appointment only


Why Us?

 You deserve the home of your dreams.  We're here to help make that happen!  Phase Four Supply, Inc.  is a  locally operated company that strives to build lasting relationships with strong product knowledge, customer service and fair pricing. We will do our best to serve you with products that will enhance your business and home. With over 20 years in the industry, we are confident that we can be a solid source for you.  




  • Wood Windows and Vinyl Windows
  • Fiberglass/Composite Windows
  • Aluminum Windows
  • Exterior Entry Doors & Interior Doors
  • Folding Door Systems, Pocket Glass Walls
  • Patio Doors, French Doors
  • Baseboard, Crown Moulding, Casing, Shiplap in MDF and hardwoods 
  • Decorative Hardwood Trim
  • Commercial Hardware, Commercial Doors


Our mission

Phase Four Supply's foundation is supporting our contractors.  We're here to help make your project go as smoothly as possible.  You can count on us for competitive pricing, accurate quoting and timely response.   


Your house is more than just your home, it's a valuable investment and we understand that, so we tackle every project like it was our own. This commitment to excellence has resulted in a list of very satisfied clients. We’d love to add your name to it.

​"Don demonstrated exceptional customer service.  He has great attention to detail and even made recommendations on options we hadn't even considered.  We are very happy with the products and service we received. We are also utilizing Phase Four Supply for a couple windows we will be replacing in our home very soon."   T.A., Rocklin, CA

"​Phase Four Supply is an amazing window and door company. We worked with them on several occasions on two homes that we are renovating. While working to replace windows at both houses, we never considered anyone else. Why would we? The  prices were excellent, his attention to detail was also excellent. I felt  relaxed and supported with any window related issue. We will absolutely work with them on the next job."  Mary Anne K.​

"These guys were amazing. Great prices, selection and service. I purchased windows for a total window replacement for my house. Don and his team did a great job communicating and handling everything I could not have asked for more. I would highly recommend Phase Four Supply for future work."  Stuart K. "Don has been phenomenal to work with. He has been attentive and has always followed through with his promises. In addition, Phase Four Supply has great prices…… You can’t ask for anything else…"  Keith M.

"Don and Liz are fantastic. A wonderful family owned local resource with great prices and service and willing to go out of their way to make sure that you get what you want and need for your project!!"  Dan W.


Contact Us

Our showroom is open by appointment only.

We value your time and want to ensure that you are well taken care of when you visit us.  Please call in advance to schedule an appointment with a sales professional.   

Phase Four Supply, Inc.

1031 Junction Blvd, #803, Roseville, CA 95678, US

(916) 771-3627

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