We are the experts in traditional and spray foam insulation for over 40 years. Learn More


Home Performance

Schedule your SDI Home or Building Performance Test Today, call 650.685.5500 or Learn More

Home Performance


Contact SDI to update your existing wood burning fireplace with a gas/wood insert.


About SDI

Learn more about why SDI is California’s Building Efficiency Experts.

About SDI



For the past 40 years, we’ve been dedicated to helping Californians construct and retrofit super-efficient residential homes
and buildings that save money and positively impact the environment. When you want to live green and save green,
call SDI, your Building and Home Performance Specialists.

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We built our reputation as the experts in traditional and spray foam insulation over the past 30 years. We can design a sustainable envelope that reduces wasted energy and gives you a warm environment.

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SDI customers no longer have to work with two different vendors for fireplaces and insulation. We now offer a full line of traditional & contemporary, gas, and electric fireplaces to meet every style and heating need.

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Building performance is a diagnostic measurement of your home’s energy consumption, usage and efficiency. SDI Blower Door, Duct Leakage and Combustion Safety Testing are tools designed to measure the level of safety and efficiency of a building and its systems.

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SDI understands how to develop custom solutions for a wide range of clients. Whether you’re a homeowner, contractor or architect we are the experts in the field of energy efficiency.



• Licensed Spray Foam Insulation
• Batt Insulation
• Blown Loose Fill Insulation
• Blown Cavity Fill Insulation

• Blown In Blanket Insulation (BIBS)
• Building Air Sealing
• HVAC Duct Sealing
• FSK Duct Insulation

• Sound Deadening
• Home Performance Testing
• Fireplaces

Latest SDI Insulation News
SDI Racing Announces The 2017 AFT Sacramento Mile

Steve and Vincent DeLorenzi of SDI Insulation are proud to announce:
The SDI Racing 2017 AFT Sacramento Mile…
For T…

The CaliforniaFIRST PACE financing program just got a whole lot better!

CaliforniaFIRST is an innovative partnership between your county government and SDI that allows you to receive upfront…

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