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Your Trusted Source for Building Materials & Insulation
Knez Building Materials Co has been a trusted family-owned business since the early 1950s, dedicated to providing high-quality building materials and solutions to contractors, builders, and DIY enthusiasts across Oregon and Washington. Starting with humble beginnings in Tualatin, Oregon, we have grown to operate six locations with over 150 employees, maintaining a strong commitment to innovation, reliability, and sustainability. Our comprehensive product range includes drywall, acoustic ceiling tiles, joint compounds, metal framing, FRP panels, fasteners, plaster accessories, and specialized insulation solutions. We pride ourselves on exceptional customer service, offering expert advice and support to ensure every project meets the highest standards.

Our in-house developed Skyfork equipment and specialized boom trucks enable efficient material handling, while our drywall recycling services promote environmental sustainability. With decades of experience and a focus on continuous improvement, we remain dedicated to delivering value through quality products, cutting-edge solutions, and a deep understanding of industry needs. Our family-driven ethos ensures every customer receives personalized attention, fostering long-term relationships built on trust and mutual respect. As a leader in the building materials industry, we combine tradition with innovation to support the evolving demands of residential and commercial construction projects.
Services
Drywall Insulation Solutions Boom Trucks Drywall Recycling Acoustic Ceiling Tiles Joint Compounds Metal Framing FRP Panels Fasteners Plaster Accessories
Highlights and features
  • Family-owned since the 1950s with deep industry expertise
  • Comprehensive product range for all construction needs
  • Free insulation evaluations and expert recommendations
  • Innovative material handling solutions with Skyfork equipment
  • Commitment to environmental sustainability through drywall recycling
Services
Drywall
We offer durable, fire-resistant drywall solutions for residential and commercial construction projects. Our products ensure structural integrity while providing ease of installation and long-term performance. Expert guidance helps customers select the right materials for their specific needs.
Insulation Solutions
Our high-performance insulation services include spray foam, weatherization, and removal of outdated materials. These solutions enhance energy efficiency, reduce heating and cooling costs, and improve indoor climate control for homes and businesses.
Boom Trucks
Specialized boom truck rentals with certified operators lift heavy materials to rooftops, upper floors, or hard-to-reach areas. This equipment saves time, reduces manual labor risks, and ensures precise material placement on job sites.
Drywall Recycling
We provide eco-friendly drywall recycling services that divert construction waste from landfills. Unused, unpainted drywall scraps are processed into new materials, supporting sustainable building practices in the Pacific Northwest.
Acoustic Ceiling Tiles
Premium acoustic ceiling tiles improve sound absorption in commercial and residential spaces. These products reduce noise levels, enhance room acoustics, and contribute to a more comfortable environment for occupants.
Questions
What building materials do you offer?
We provide drywall, acoustic ceiling tiles, joint compounds, metal framing, FRP panels, fasteners, and plaster accessories for residential and commercial projects.
Do you serve both contractors and DIY enthusiasts?
Yes, we cater to licensed contractors, builders, and DIY enthusiasts with products, expert advice, and specialized equipment rentals.
How does your drywall recycling program work?
We accept unused, unpainted drywall scraps at our Clackamas location, which are processed into new materials to reduce landfill waste and promote sustainability.
What insulation services are available?
We offer spray foam insulation, weatherization, and professional removal of outdated insulation to improve energy efficiency and indoor comfort.
Are material handling solutions available for rent?
Yes, we rent boom trucks and Skyfork equipment with certified operators to safely transport heavy materials to challenging job site locations.
What areas do you serve?
We operate in Portland, Clackamas, Tigard, Salem, Eugene, and Vancouver, providing delivery and on-site support throughout Oregon and Southern Washington.
Reviews (6)
David Totzen
Oct 27, 2020 Report
Thank you all more and crew for doing such a good job on my home you want above and beyond. You also let me know That I had an unchecked water leak under my house which eventually could have been serious. Thank you again for such a great follow through
Santino F.
Mar 17, 2020 Report
Hired these guys to help out with a project they did not even know the code for the right insulation on our building and then filed a lien on our property when we refused to pay them after a failed inspection. We then called the manufacturers of the spray foam and they told us that Knez's spray foam that was installed, does not need 2hr fire code safety assembly. Watch out for these guys these guys they are unethical we are in the middle of filing a complaint with the CCB and then will pursue legal action.

Watch out for Bart Stageberg he is the one who talked us into purchasing the spray foam instead of regular insulation. He has no idea what he's doing, lies about it and is very disorganized. We had to tear out all of the insulation in most of the walls and the entire ceiling. 1700 sq ft worth. I'll be adding pictures as proof as well. Their attorney is in my opinion one of the worst people to ever walk the face of the earth. If your looking for a rude, belligerent, jerk to work for you I would give Mark O Cottle a call.
Jarrod L.
May 10, 2019 Report
Well I had an appointment scheduled for 4:30 on 5/8 for an insulation quote that was scheduled for a little over a week. 30 min before the appt I received a phone call saying "my boss won't let me leave the office until 5:15" I told him it wouldn't work and 4:30 tomorrow (5/9) would be better. He agreed and we set up a new appt for 5/9 at 4:30. Well yesterday rolls around and it's 4:50 so I call and my information was taken to receive a call back to inform me what was going on.

Long story short no technician ever showed up, never received a phone call letting me know what was going on. Needless to say my time was wasted, and I'll never be calling them again for anything.
Gene O.
Jan 30, 2018 Report
Knez did the under insulation and attic insulation on a side job for me. After inspecting their work I was impressed with what they did. There crew went above and beyond in doing it correctly.
Skypilot Crypto
Oct 27, 2015 Report
Good service.will bend over backwards to serve your needs.these delivery guys work their tails off and are very polite.owners and management are good people.office workers are kind.delivery guys are amazing and deserve positive recognition and praise.
Carl Nurmi
Jul 03, 2012 Report
I buy most of my drywall materials from here. They're efficient and knowledgeable. Carl Nurmi, owner of Cascade Painting and Restoration.