May 23, 2025
Trying to save a few bucks on your next renovation? You’re not alone. With DIY videos just a click away and insulation materials available at big-box stores, it’s tempting to believe you can handle home insulation on your own. After all, how hard can it be to roll out some batting or spray a little foam?
The truth is, insulation is more than just stuffing materials behind drywall. It’s a science. It requires a technical understanding of air sealing, moisture control, building codes, R-values, vapour barriers, and thermal bridging.
When improperly installed, even slightly, insulation can cause more harm than good. In this blog, we’re uncovering what happens when you skip hiring a professional insulation contractor.
We’ll walk you through the costly mistakes DIYers make, the risks involved, and why working with a certified expert can save your wallet (and your walls) in the long run.
Even with the best intentions, DIY insulation projects often lead to subpar results. Here’s where things usually go wrong:
Skipping air sealing before insulation installation is one of the biggest blunders. Gaps around vents, windows, and plumbing can render your insulation useless.
Using batt insulation in a space that needs spray foam, or installing low R-value materials in a cold attic, is a recipe for discomfort.
Common issues include leaving gaps, overstuffing insulation, or compressing it, all of which reduce its effectiveness.
| Aspect | DIY Insulation | Professional Installation |
| Air Sealing | Often skipped or poorly done | Proper sealing with diagnostic equipment |
| Material Choice | Based on guesswork | Based on assessment and building science |
| Installation Consistency | Uneven, compressed, or gapped | Even, thorough, and to code |
| Long-Term Performance | Low efficiency, increased energy costs | High efficiency and comfort |
| Risk of Mould & Moisture | High due to missed vapour barriers | Low with proper planning and execution |
| Warranty and Compliance | Often voided | Typically covered and fully compliant |
Heat loss is one of the most common issues in poorly insulated homes. According to Natural Resources Canada, insulation and air sealing alone can reduce energy bills by up to 30%. But only if they’re done right.
Improperly installed insulation can trap moisture behind walls and ceilings. This creates the perfect breeding ground for mould. Once it spreads, you’re facing health issues, drywall damage, and major remediation costs.
Insulation installed too close to electrical fixtures, flues, or recessed lighting can be a fire risk. Licensed insulation contractors follow building code guidelines to avoid these dangers.
Many insulation manufacturers only honour product warranties if installed by certified professionals. Worse, insurance claims can be denied if damage results from non-compliant DIY work.
Not every home has the same insulation needs. An experienced insulation contractor will assess your attic, walls, and basement to recommend the right materials and R-values.
They’re well-versed in Edmonton’s building codes and will ensure your insulation meets all local standards, something DIYers often miss.
With proper installation, your insulation performs better, lasts longer, and actually saves you money by reducing heating and cooling costs.
Professionals work with care around wiring, plumbing, and HVAC systems, using safe and approved materials. Their work also comes backed by liability insurance and warranties.
An insulation contractor does more than install fibreglass or spray foam. These licensed professionals are trained to assess your home’s layout, detect air leakage, calculate thermal resistance needs, and apply materials in a way that meets both local building codes and long-term performance expectations.
When hiring a contractor, don’t just go with the cheapest quote. Look for:
At Truerock Interior Systems, we understand the stakes of proper insulation. Based in Edmonton, we provide expert services in spray foam, attic insulation, wall insulation, and more, which are always installed by certified professionals.
As one of Alberta’s trusted construction partners, we handle residential, commercial, and industrial projects with the highest standards of quality and compliance. We don’t cut corners, because insulation isn’t something you want to redo twice.
Contact us today to schedule a consultation with an experienced insulation contractor who puts your safety, comfort, and efficiency first. For more information, visit our website today.
