General Building Material (GBM) offers a full range of drywall (or gypsum) and building supplies.


GBM offers a full range of fiber glass (or mineral) insulation. We stock majority of all sizes.

Ceiling Tiles

We carry Certainteed brand ceiling tiles! Give us a call if you have a specific product in mind, and we can order it in!

Steel Studs

• Always in stock: light gauge steel• Sizes are 8 ft, 9 ft, 10 ft and 12 ft• Special order gauges & sizes available within 48 hours. Call and ask us for further questions and we'd be happy to help.


We deliver into the Greater Toronto Area (GTA), Mississauga, Orillia, Barrie, Milton, Oakville to Hamilton and surrounding areas. We may be working on projects beyond.

Compounds & Tools

We carry CGC, Certainteed and Continental brands. We have tape, tools, and everything else you'll need to tape your wall for DIYers and contractors alike!

Emergency? Call now!