Preflex Inc.

Preflex Inc.


Welcome to Preflex, our ICC-certified Structural Insulated Panels (SIPs) are at the forefront of green building technology. Our SIPs ensure faster build times, no waste, cost-effective solutions, and robust structures that stand the test of time. Explore Preflex SIPS today and join the revolution in sustainable construction that's redefining quality and performance.

At PREFLEX, we're changing the way we build, Providing you with a FASTER, COST-EFFECTIVE, STRONGER, and ENERGY EFFICIENT building experience.

With Rising Material and Labor shortages, PREFLEX  is the best way to obtain energy efficiency without breaking the bank.

Our SIPs are 45% more sustainable, than stick frame. Have an R-Value of 21.6 compared to 13.7 for stick frame (2x6 Stud@24”oc, 6” SIP, Whole Wall Comparison). Have 85 - 88% less air leakage than stick frame, making them highly energy efficient. And can be used to build in half the time than a stick frame construction.

Preflex Services

Architectural Design
Select from our pre-designed floor plans or collaborate with our parter drafting team to develop a custom design tailored to your specifications. Structural Engineering Preflex will transform your building into a panelized system by creating detailed shop drawings and coordinating with our Licensed Professional Engineer (PE) to perform the necessary structural calculations and stamp the approved drawings.

SIP Manufacturing
Leveraging Building Information Modeling (BIM) technologies, we precisely manufacture SIPS with laserprecise equipment within our CA FBH (Factory Built Housing) Certified  facility.

Framing Installation
Preflex will deliver and install your SIP package using our CA licensed partner framing crew, ensuring precise alignment with all framing requirements, leaving the structure prepared for subsequent specialized trade work.


Based in California, we are passionate about doing our part to solve the housing crisis by creating and supplying the materials to create more affordable housing. We manufacture, design, and engineer high-quality, smart, sustainable homes, and our current track record speaks to our dedication to the well-being of our business and private clients.


Our vision is that modular construction will be mainstream, making it easier, faster, and more environmentally responsible to create robust, affordable, and unique custom homes. As we become a leader in modular construction, we take pride in our impact on housing, homelessness, and further industry advancement.

Better Building: The SIPs Revolution Podcast
Step into the world of sustainable construction with "Building Better," the podcast dedicated to demystifying Structural Insulated Panels (SIPs) Construction. Each episode, we delve into the essentials of SIPs, welcoming a diverse array of industry professionals and experts to share their insights.
Apple Podcast

Featured Projects

San Diego, CA

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Danville, CA

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