Can a home energy audit in Fredericton identify whether my wall insulation has settled or degraded over time?

Yes, a professional home energy audit (EnerGuide evaluation) in Fredericton can identify wall insulation problems including settling and degradation, though the methods vary depending on your home's construction and the thoroughness of the assessment.

A comprehensive energy audit uses several diagnostic tools that reveal insulation performance issues. Thermal imaging cameras are particularly effective at identifying settled or missing wall insulation — they show temperature differences across wall surfaces that indicate cold spots where insulation has failed. During a winter audit, areas with inadequate insulation appear as warmer spots on exterior walls (heat escaping) or colder areas on interior walls. Blower door testing creates controlled air pressure that helps identify air leakage through walls, which often correlates with insulation gaps or settling.

The auditor will also perform a visual inspection of accessible areas like unfinished basements, crawl spaces, and attics where wall cavities may be visible. In older Fredericton homes built in the 1960s-1980s, it's common to find fibreglass batts that have slumped down in wall cavities, leaving the upper portion of the wall uninsulated. Blown-in cellulose can settle 15-20% over time, and loose-fill insulation may have shifted due to air movement or vibration.

Fredericton's climate makes insulation degradation particularly problematic because the city experiences 4,800-5,000 heating degree days annually with sustained winter temperatures well below freezing. Homes in older Fredericton neighbourhoods like Nashwaaksis, Devon, and the downtown core often have original R-12 wall insulation that may have settled to R-8 or lower in the upper portions of walls. This creates significant heat loss and comfort problems, especially on the second floor where many homeowners report cold bedrooms despite adequate heating.

Moisture damage is another degradation issue that energy audits can identify. Fredericton's location in the Saint John River valley creates humidity challenges, and improperly installed vapour barriers can allow moisture to reach insulation. Wet fibreglass loses most of its insulating value and may compress permanently. Thermal imaging often reveals these moisture-damaged areas as distinct temperature patterns.

For the most thorough assessment, request an audit that includes thermal imaging and ask specifically about wall insulation performance. The auditor should check for thermal bridging through studs, identify air leakage patterns, and note any visible insulation problems in accessible areas. Some auditors can also use moisture meters to check for dampness in wall assemblies that might indicate insulation degradation.

If the audit identifies settled or degraded wall insulation, the most cost-effective solution in existing Fredericton homes is typically dense-pack cellulose retrofit — drilling small holes in exterior walls and blowing in cellulose at high density (3.5+ pounds per cubic foot). This method fills voids left by settled insulation and provides significant air sealing benefits. Expect to pay $2,500-$5,000 for a typical two-storey Fredericton home.

Professional energy audits are required for NB Power's Total Home Energy Savings Program and the federal Greener Homes Grant, which can provide up to $10,000 in combined rebates for insulation upgrades. The pre-retrofit audit establishes baseline performance, and the post-retrofit audit verifies improvements — making the audit cost essentially free when claiming available rebates.

Find certified energy advisors and insulation contractors in the Fredericton area through the New Brunswick Construction Network to get your comprehensive energy assessment and address any insulation issues the audit reveals.