Flat Roof Replacement with Insulation Upgrade

Our previous customer knew her flat roof would soon need replacement, so she took a proactive approach. She didn’t want to wait for leaks or serious damage. At first, there were no signs of water inside the home. But once we started removing the old roof membranes, we found water trapped between and beneath the layers.

After removing all roofing materials, we uncovered decayed wood, which we replaced right away. We also repaired a corner of the roof during the process. Another challenge was a large dip in the middle of the roof caused by the house settling over more than 100 years. To correct this, we used insulation boards to level the roof deck. On top of that, we added 1.5-inch Poly-Iso insulation for extra protection against summer heat.

The final system included an SBS self-adhered Soprema flat roofing membrane in a light grey color. This created a “cool roof” effect, reducing heat absorption. By using self-adhered membranes, we also eliminated the fire risks linked to flammable roofing materials. Recent GTA fires from unsafe roofing practices remind us why this step matters so much.

End Result: A strong, energy-efficient, and beautiful flat roof—one of the best in the neighbourhood—and a very happy customer!