Signs Your Okanagan Home Needs Better Insulation

If your heating and cooling costs have crept up year over year without a clear explanation, your attic insulation is likely the culprit. Heat rises — and in winter, a poorly insulated attic is the single biggest source of heat loss in most Okanagan homes. In summer, an under-insulated attic turns into a furnace that radiates heat down into your living space. Your HVAC works overtime both seasons, and you pay for it.

Inconsistent temperatures throughout your home — one room freezing, another sweaty — almost always point to insulation gaps. The most common cause is uneven attic insulation combined with a lack of air sealing, where some areas have settled, shifted, or were never properly covered in the first place. The most effective fix is a full air seal followed by re-insulating with loose fill fibreglass — sealing the air leaks first, then restoring proper insulation depth across the entire attic floor. If the issue is in your walls rather than the attic, dense pack cellulose is an excellent option — it can be blown into enclosed wall cavities without removing drywall, filling gaps and improving thermal performance throughout.

Ice dams form when heat escapes through an under-insulated attic, melts snow on the roof, and refreezes at the cold eaves. If you see ridges of ice along your roofline after a snowfall, your attic insulation needs attention before the next melt cycle damages your roof or ceilings. Proper attic insulation combined with air sealing prevents the warm air from reaching the roof deck in the first place.

Take a look in your attic. If the insulation is flat, compressed, discoloured, or you can see the tops of the ceiling joists, it's not doing its job. Fibreglass batts lose their loft over time, and blown-in insulation can settle or shift, leaving gaps. Many Okanagan homes built before 1990 were insulated to R-20 or less — modern standards call for R-50 or higher in attics.

While attics are the biggest concern, don't overlook what's below. Cold floors in winter often point to an uninsulated crawl space. Moisture, musty smells, or condensation in your crawl space can indicate an insulation and air-sealing problem. Closed-cell spray foam addresses both the insulation gap and the vapour barrier in crawl spaces in one step.

BC's building code insulation requirements have changed significantly over the decades. Homes built before 1990 — and many built well after — were insulated to standards that simply don't hold up to today's energy costs or comfort expectations. Attics are usually the worst offender because they were often the last area to get attention during original construction. If you've never had an insulation assessment, there's a good chance your attic is under-insulated.

If any of these signs sound familiar, the most useful thing you can do is get a professional assessment. A good contractor will check your attic insulation depth and condition, identify air leaks, and recommend the right type of insulation for your specific situation.

Insulate360 offers free, no-obligation assessments for homeowners throughout the Okanagan-Similkameen and Boundary regions. We can also tell you upfront whether your project qualifies for CleanBC or FortisBC rebates — which can cover a significant portion of the upgrade cost.