Humber/Ontario Real Estate Course 3 Exam Practice

What type of insulation material is described as a low-density foam used before 1980?

1. High-density spray foam.

2. Mineral wool insulation.

3. Urea-formaldehyde foam insulation.

4. Fiberglass insulation.

5. Cellulose insulation.

6. Polyurethane foam insulation.

The correct answer is: Urea-formaldehyde foam insulation.

Urea-formaldehyde foam insulation is indeed a low-density foam used extensively before 1980. It was popular for its ease of installation and effective insulating properties, being used in both wall cavities and as a loose-fill insulation material. The chemical composition of urea-formaldehyde allows for a quick-curing process resulting in a lightweight foam that can fill gaps and spaces to improve thermal efficiency. This type of insulation became less favored over time due to concerns about the release of formaldehyde gas, which can pose health risks. Hence, its usage declined after the 1970s, making its historical significance particularly relevant for understanding older residential properties and renovation considerations in real estate. The other types of insulation mentioned, such as high-density spray foam, mineral wool, fiberglass, cellulose, and polyurethane foam, are either heavier or developed after the widespread use of urea-formaldehyde foam insulation. Understanding these differences is crucial in identifying older insulation types during property inspections or evaluations.