Does Blown-In Insulation Settle Over Time?
Blown-in insulation is one of the most efficient and cost-effective ways to upgrade your attic, but many homeowners in BC ask the same thing — does it settle over time? The short answer is yes, but not in a way that should concern you if it is installed correctly.
At InsulationBC.com, we specialize in R50 blown-in fiberglass insulation that is designed to stay effective year after year. Here is what you need to know about how blown-in insulation behaves and why quality installation matters.
1. Settling Does Happen — But It Is Accounted For
All loose-fill insulation settles slightly after installation. This is normal. Our crews apply blown-in fiberglass at a higher depth to compensate for minor settling so the final settled R-value still meets or exceeds the R50 target.
2. Moisture or Poor Air Sealing Can Make It Worse
If your attic is poorly ventilated or has high humidity, blown-in insulation can clump or compress over time. We inspect all ventilation and air gaps before installing to prevent this kind of settling from becoming a problem.
3. Fiberglass Settles Less Than Cellulose
Fiberglass is much more stable over time compared to cellulose. It retains loft and does not absorb moisture, which is why we use it exclusively for long-lasting results in BC homes.
4. Proper Installation Prevents Uneven Coverage
When insulation is applied unevenly or too thin in areas, settling can create low spots that reduce overall effectiveness. We always use professional equipment and blow insulation in even layers across the full attic floor.
5. Periodic Checkups Help Maintain Performance
If your insulation was installed many years ago, it may be time for a quick check. We offer free attic inspections to verify current R-values and top up where needed to maintain efficiency and comfort.
Blown-In Insulation Is Still the Smartest Choice
When properly installed, blown-in fiberglass is a reliable, long-lasting insulation solution that outperforms most alternatives. Slight settling is normal, but it is already factored into the process.
👉 Contact us for a free attic inspection and find out if your insulation is still doing its job.
