Residential Roof Renovation · Markham, ON
Spray Foam Insulation During Roof Renovation in Markham
A look at spray foam insulation during a roof renovation in Markham, with the timber framing exposed and roof and wall cavities accessible for installation.
Project at a Glance
- Service
- Spray Foam Insulation
- Location
- Markham, Ontario
- Application
- Selected Roof & Wall Cavities
- Project Stage
- Roof Renovation
- Material
- Spray Polyurethane Foam (SPF)
- Construction
- Exposed Timber Framing
- Installation
- Spray Application
Project Specifications
- Property Type
- Detached residential house
- Building Year
- 2006
- Foam Type
- Medium-density closed-cell SPF
- Foam Density
- approx. 2 lb/ft³ (32 kg/m³)
- Roof Area
- 560 sq. ft.
- Wall Area
- 240 sq. ft.
- Insulated Area
- 800 sq. ft.
- Roof Foam Thickness
- 5 in. (127 mm)
- Wall Foam Thickness
- 3 in. (76 mm)
- Nominal Foam R-Value
- R-6 per inch
- Roof Material R-Value
- approximately R-30
- Wall Material R-Value
- approximately R-18
- Crew Size
- 2
- Installation
- 2 working days
R-values are nominal values for the spray foam material only. They are not the R-value of the complete roof or wall assembly.
Project Overview
This residential insulation project took place while the timber roof structure was open for renovation. With the framing accessible, the installation focused on selected roof and wall cavities, including overhead sections and connections between timber members. The open construction stage made it easier to see where the foam was being applied before interior finishes concealed those areas.
What Made This Project Different
The exposed timber framing provided direct access to roof and wall cavities, including overhead joints and difficult-to-reach corners. A translucent covering was visible above the structure, bringing natural light into the workspace. The key consideration was matching the foam application to the actual roof assembly and its moisture-control requirements.
Work Performed
The photographs show spray polyurethane foam being applied to selected overhead and wall cavities around exposed timber members. The work required access around joists, corners and framing transitions, where uneven coverage is easier to overlook. These images document the application stage, not the final inspection or a measured whole-building energy result.
Project Result
The installation photographs show foam coverage developing across the exposed roof and wall framing, including overhead sections and timber junctions. Working before interior finishes were installed kept these areas visible and accessible. Final installed thickness, material R-value and completed inspection results are documented separately when the project records are available.
Practical Takeaway
Open framing makes it easier to inspect junctions and plan where the air and thermal boundaries should run. Adding more insulation alone is not always the answer: roof design, ventilation and moisture control have to be considered together before choosing a spray foam system.
Planning Spray Foam Insulation in Markham?
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