🎉 Up to 70% Off Selected ItemsShop Sale

Build Better, Last Longer

Expert building envelope solutions and free professional guidance for high-performance construction projects.

Our Story

At 475 High Performance Building Supply, we are dedicated to transforming the construction industry by providing the essential tools for a sustainable, carbon-free future. From advanced thermal insulation like Diathonite Thermactive to precision air-sealing with TESCON VANA, we curate only the highest-quality solutions for high-performance building envelopes. Our mission is to empower builders and architects with the innovation needed to create healthy, resilient, and energy-efficient homes.

What Our Customers Say

★★★★★

“The airtightness tapes are game-changers for my passive house projects. Incredible quality and fast shipping.”

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Marcus R.

★★★★★

“Finally found a supplier that understands high-performance building science. Their customer support is truly expert-level.”

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Elena W.

★★★★★

“Top-tier insulation solutions that made our retrofit seamless. 475 is my go-to for sustainable materials.”

J

Jordan K.

New Arrivals

-65%NEW
Lamilux FE
$2,555.43
$894.40
-65%NEW
LUNOS Additional Exterior Cover
$28.40
$9.94
-65%NEW
LUNOS Controller 5-UNI-FR No.40269
$156.90
$54.91
-65%NEW
TESCON PROFIL
$72.00
$25.20

Why Choose Us

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Airtight Building Solutions

Premium materials for high-efficiency, sustainable building envelopes.

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Eco-Friendly Materials

Safe, non-toxic products that prioritize long-term environmental health.

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Expert Technical Support

Professional guidance for complex high-performance construction projects.

Build Smarter with High Performance Solutions