Markham (Cornell): a newer home with three inches of insulation left at the eaves

1The Problem

Builder-minimum insulation doesn’t fail loudly. It settles quietly, year after year, until the bedrooms over the garage won’t stay warm and the furnace stops taking breaks. At the eaves — where wind washes over the insulation every day — this attic was down to about 3 inches.

2What the Inspection Found

Beyond the thin coverage, the inspection flagged what we find in almost every Cornell-era home: pot lights and ceiling penetrations that were never sealed, leaking warm house air straight into the attic. Air sealing had to come before a single bag of insulation went in — otherwise the new material just filters the leak instead of stopping it.

3How We Fixed It

A textbook seal-then-blow visit:

• Spray-foam sealed the ceiling penetrations, pot lights and top plates
• Protected the soffit intake airflow with baffles
• Blew fresh fiberglass across all 1,000 sq ft up to R-60
• Sealed and insulated the attic hatch

4The Result

From 3 inches at the eaves to a sealed, R-60 attic in a single visit. Our office is on John Street in Markham — Cornell jobs like this one are about as local as our work gets. 10-year workmanship warranty.

5The Short Version

A second floor that wouldn’t hold temperature brought Confirmed Attics & Insulation to a two-storey in Markham’s Cornell community — housing built fast in the 2000s, insulated to the minimum of the day, and settling ever since. The inspection measured as little as 3 inches at the eaves across the 1,000 sq ft attic. In a single visit the crew air-sealed the ceiling penetrations and blew the attic to a full R-60, taking the weakest points of the thermal envelope to today’s standard. Cornell jobs are about as local as the company’s work gets — its office is on John Street in Markham, minutes away, and homes of this era across the community share the same settled-to-minimum profile. From 3 inches at the eaves to a sealed R-60 attic in one day, completed July 2026, with a 10-year workmanship warranty.