Flat Roofing in the GTA: Why Modified Bitumen Leads the Pack

Flat roofs demand dependable waterproofing against year-round rain, snow, and sun. Modified bitumen—our go-to system—delivers proven performance for both residential and commercial buildings.

What Is Modified Bitumen?

A reinforced asphalt membrane improved with polymers for flexibility, durability, and weather resistance. Milano installs a two-ply torch-applied system:

• Base membrane: Waterproof foundation bonded to the deck.

• Cap membrane: Second layer for a double-sealed barrier.

Advantages for Toronto Buildings

• Superior waterproofing: Two layers protect seams and transitions.

• Cold-weather flexibility: Handles freeze-thaw without cracking.

• Serviceable: Localized repairs are efficient and cost-effective.

• Longevity: Excellent lifecycle when maintained with annual inspections.

Sloping & Parapet Solutions

Water must move. We design and build:

• Wood-framed slopes to drains or scuppers

• Tapered-insulation systems for precise ponding control

• Parapet wall construction & flashing for a clean, watertight edge

Maintenance That Pays Back

• Annual inspections and after major storms

• Drainage cleaning to prevent ponding

• Prompt flashing/membrane repairs to protect the core assembly

FAQ

Q: How long does modified bitumen last?A: With proper design and maintenance, 20+ years is common.

Q: Can you reroof over an existing system?A: Sometimes. We evaluate deck condition, layers, and code requirements first.

Q: What about green or solar on flat roofs?A: Modified bitumen can integrate with ballasted solar, pavers, or select green roof assemblies—design coordination is key.

Call to Action:Need a watertight flat roof in Etobicoke or across the GTA? Talk to Milano Roofing & Construction Ltd. about a modified bitumen system and slope design that lasts.