Metal Roof Snow Load Ontario — ROOFNOW™ Guide

Ice jams occur when meltwater cannot escape and refreezes into thick ice blocks. Armadura® Metal Roofing significantly reduces the formation of ice jams by maintaining smooth water flow.

Why Asphalt Roofs Create Ice Jams

Asphalt shingles trap meltwater beneath layers, causing pressure and refreezing. Learn winter physics at ROOFNOW™ Knowledge Center.

Armadura® Ice-Jam Prevention

• Steel prevents water absorption
• Temperature stability reduces sudden refreezing
• Interlocked seams block infiltration paths

ROOFNOW™ Recommendation

Armadura® greatly minimizes winter ice jams. Learn the science inside Roof Smart. Roof Once.

Installation information: ROOFNOW™ Armadura® Metal Roofing