Reduce energy costs 20-30% with proper attic insulation. Blown-in and spray foam solutions from Hamilton's trusted home performance experts. Government rebates available.
Custom Contracting has been improving Hamilton homes' energy efficiency for over 25 years. We're registered with the Canada Greener Homes Grant program and partner with NRCan-certified energy advisors to help you access up to $5,000 in government rebates.
Our insulation services include attic insulation (blown-in and spray foam), wall insulation, basement insulation, and complete home air sealing. We take a whole-home approach, addressing not just insulation but the air leaks and ventilation issues that affect comfort and energy use.
In Hamilton's climate, your attic is the #1 area for energy loss. Heat rises, and in poorly insulated homes, it escapes straight through the ceiling into an under-insulated attic. In summer, an uninsulated attic can reach 60°C, radiating heat down into your living space.
Many Hamilton homes—especially those built before 1980—have only R-20 to R-30 in their attics. Current Ontario Building Code recommends R-60 for new construction. Upgrading to R-50 or R-60 typically pays back in 3-5 years through energy savings, and you'll feel the comfort difference immediately.
We don't just blow in insulation and leave. Our process includes attic inspection, identifying and sealing air leaks (the biggest cause of energy loss), ensuring proper ventilation (to prevent moisture issues), adding insulation to the recommended level, and verifying the work with a blower door test if required for rebates.
Comprehensive insulation solutions to improve your Hamilton home's comfort and efficiency.
The most cost-effective way to insulate your attic. We blow in cellulose or fiberglass insulation to achieve R-50 to R-60 coverage. Quick installation with minimal disruption.
$1.50-$2.50 per sq ft
Premium insulation that seals and insulates in one step. Closed-cell spray foam provides the highest R-value per inch and acts as a vapor barrier. Ideal for cathedral ceilings and tight spaces.
$3.50-$5.00 per sq ft
Air leaks can account for 30% of your heating/cooling loss. We seal gaps around plumbing, electrical, ductwork, and other penetrations before insulating for maximum benefit.
$500-$1,500 typical
Proper ventilation prevents moisture buildup, ice dams, and extends roof life. We install soffit vents, baffles, and ridge vents to maintain proper airflow above your insulation.
$500-$2,000 typical
Upgrade wall insulation without removing drywall using dense-pack cellulose or injection foam. Ideal for older Hamilton homes with empty or under-insulated wall cavities.
$2.00-$4.00 per sq ft
Insulate basement walls and rim joists to reduce heat loss and improve comfort. Essential for finished basements and helps prevent frozen pipes.
$3.00-$6.00 per sq ft
Take advantage of available incentives to reduce the cost of insulation upgrades.
Up to $5,000 in grants for eligible energy upgrades including attic insulation. Requires pre- and post-upgrade EnerGuide evaluations. We guide you through the process.
Learn More →Up to $5,000 in rebates for insulation from Enbridge Gas. Can be combined with federal grants. Requires energy audit through Enbridge's program.
Learn More →Interest-free loans up to $40,000 with 10-year repayment for major retrofits. Combine with grants for comprehensive home upgrades.
Learn More →Blown-in attic insulation to R-60 typically costs $1,500-$4,000 for a Hamilton home, depending on size and current insulation levels. Spray foam is $3,500-$8,000. With rebates, net cost can be reduced by 30-50%. We provide free assessments with exact pricing.
Most Hamilton homeowners see 20-30% reduction in heating/cooling costs after proper attic insulation. For a home spending $3,000/year on energy, that's $600-$900 annual savings. Payback is typically 3-5 years, and savings continue for the life of the insulation.
For Hamilton's climate zone (Zone 6), we recommend R-50 to R-60 in attics. Many older Hamilton homes have only R-20 to R-30. We'll measure your current insulation and recommend the optimal upgrade level considering rebate requirements and cost-effectiveness.
Both work well in Hamilton attics. Cellulose (recycled paper) is slightly better at air sealing and has higher R-value per inch. Fiberglass is non-flammable and doesn't settle over time. We typically recommend cellulose for blown-in applications but can install either.
Most attic insulation jobs in Hamilton are completed in one day. We arrive, prep the area, install insulation, and clean up. Larger homes or spray foam applications may take 2 days. We work efficiently to minimize disruption to your household.
Usually no—we can blow new insulation directly over existing fiberglass or cellulose. Exceptions: if old insulation is contaminated (mouse droppings, mold, vermiculite/asbestos), it should be removed first. We assess and advise during your free evaluation.
Have more insulation questions? Contact our Hamilton insulation experts →
Get a free insulation assessment. See how much you can save with upgraded insulation and available rebates.