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Create Comfort With Home Insulation

Homes that are leaky use 20-50% more energy to heat and cool the home.

In the Portland, Eugene, Vancouver, and Salem, Oregon & Washington areas, any home over 10 years old is almost certain to be under-insulated. More often than not, these older homes have no insulation under the house at all! Houses that are under-insulated are missing a simple yet essential component of energy efficiency. Proper insulation for your home’s walls, floors, and attic is proven to grant you savings on energy costs while reducing spend on heating and cooling throughout the year. Additionally, spray foam insulation, acoustical sound insulation, or even foam board insulation can help with noise reduction.

You can trust the Knez team to provide you with quality insulation – we use only the best insulation products to help you reduce energy costs, avoid drafts, and keep your Portland home quiet when noises outside get too loud.


Save Money with Cash Incentives and Tax Credits

Being comfortable has never been more affordable.

We’ll help with the paperwork while you enjoy getting 30% off your energy costs! Energy Trust and other utilities offer cash incentives for weatherizing your home and financing for your home improvements. As a trade ally contractor of Energy Trust of Oregon, Knez Inc. can help with cash incentives and state energy tax credits to improve the energy efficiency of your home with more green insulation. Contact us today to learn more.


At Knez, We're All About Community

Northwest owned and operated.

At Knez Building Materials Co., we have an old-school mentality – that is what sets us apart. We help each other out. We believe in doing the best that you can for the people you work with. From the very beginning, we have been a local, family-run business for the Portland, Eugene, Vancouver & Salem areas, and we’ve stayed true to our roots. 

We believe in honest hard work, and we believe that our customers deserve the best possible service that we can give them. We’ve been around a long time, and our core values in excellent service and hard work have never wavered. Although we’ve grown substantially since John Knez Sr. bought the company, we still think of ourselves as “the little guys.” Instead of expanding out across the country, we believe that we can better serve our customers by concentrating our efforts right here in the Pacific Northwest.


Reach Out! We'd Love to Talk

Aside from Portland, Oregon you can visit us in Clackamas, Eugene, Salem, Tigard, and Vancouver, Washington. If you have questions, we have the answers you need. Save yourself the hassle and give us a call at (+1)888.533.0745  – we are here to help!

Interested? Call us for a free consultation:


Free Insulation Evaluation