NetZero Building Supply started with a simple frustration: the components of a high-performance envelope were scattered across a dozen suppliers, none of whom could talk about the assembly. So we built the counter we wanted to buy from — an importer and stocking distributor that carries the air-sealing, membranes, tapes, ventilation, daylighting, and insulation of the modern envelope, and staffs the desk with people who can read a wall section.

We import from a deliberately short line card: manufacturers chosen because their product does one job in the assembly excellently. We stock deep, we ship fast, and where coverage exists we route orders through local stocking distributors so your crew can pick up near the job.

And because products without understanding just become returns, we run a full knowledge operation — courses, trainings, videos, events, and our documented Envelope Systems — free, for anyone doing the work.