Is Ply Gem Canada Canadian?
No
This brand is owned by a foreign parent company.
What we found
Ply Gem Canada operates as a subsidiary of Cornerstone Building Brands, a US privately held company (Clayton, Dubilier & Rice) headquartered in Cary, North Carolina.
The receipt
| Verdict | Foreign-owned |
| Category | Canadian window/door manufacturers |
| HQ | Cary, North Carolina, USA |
| Confidence | high |
| Evidence | Government registry / filing |
| Source | https://www.sec.gov/Archives/edgar/data/883902/000088390226000005/cnr-… registry record “SEC EDGAR 10-K filed 2026-03-12 by Cornerstone Building Brands, Inc. names Ply Gem Canada — parent company's own annual filing.” |
Canadian alternatives to Ply Gem Canada
Every brand below is listed as Canadian-owned in our registry.
| Brand | Category | HQ Location | Ownership Check |
|---|---|---|---|
| Challenger Building Supplies Ltd. | Construction & Building | Alberta | View ownership → |
| Convoy Supply | Canadian building materials/roofing supply chains | Surrey, BC | View ownership → |
| Doman Building Materials Group Ltd. (formerly CanWel) | Construction & Building | Vancouver, British Columbia | View ownership → |
| Matériaux Miron Plus | Construction & Building | Quebec | View ownership → |
| Thunder Bay Plywood | Construction & Building | Thunder Bay, Ontario | View ownership → |
| Windsor Plywood | Construction & Building | Calgary, Alberta | View ownership → |
Spotted something wrong? Ownership changes all the time — report a correction and we'll re-check the records.