Rafter Insulation

Rafter insulation is the process of adding insulating material between the rafters of your roof to minimize heat loss or gain. This helps keep your home at a more consistent temperature while reducing energy usage. The most common insulation materials used for rafters are fiberglass, foam boards, and spray foam.

You may need rafter insulation if:

• Your home has temperature imbalances or uncomfortable hot/cold spots.
• Your energy bills have increased without explanation.
• You have noticed condensation or moisture buildup along the rafters or ceiling.
• There are drafts or air leaks coming from the roof or ceiling.

The ideal insulation depends on factors like your roof structure and climate. Common options include:

• Fiberglass Batt Insulation: Affordable and easy to install, perfect for standard rafter spaces.
• Spray Foam Insulation: Expands to fill gaps, providing a superior air barrier and insulation.
• Rigid Foam Board Insulation: Great for providing consistent thermal resistance, especially in colder climates.

Most rafter insulation materials can last 20-30 years if properly installed and maintained. Over time, some materials may settle or degrade, so periodic inspections are recommended to ensure optimal performance.