Insulation
Boost Comfort. Reduce Energy Costs in Southwestern Ontario.
Blown-in & Spray Foam Insulation
If your energy bills are rising, poor attic insulation could be the cause. At Harp Interiors, we specialize in high-performance insulation solutions that can reduce heating and cooling costs by up to 40%, while improving year-round comfort and energy efficiency.
Smart Insulation, Long-Term Savings
We install spray foam and blown-in insulation to create a seamless, airtight barrier against heat loss. Our tailored solutions reduce strain on your HVAC system, improve indoor air quality, and help protect your home from moisture and mold.
What We Offer:
Thermal Imaging Inspections: Pinpoint areas of heat loss and hidden moisture with non-invasive thermal scans.
Blown-In Insulation: An affordable, efficient option ideal for attics, walls, and cavities.
Attic Sealing & Ventilation: Prevent moisture buildup and ice dams while ensuring proper airflow and protection.
Why Choose Harp Interiors?
Professionally trained and certified installers
100% satisfaction guarantee with third-party manufacturer warranties
Trusted experience with thousands of energy audits completed
Solutions for homes, offices, and cottages
Get a Free Assessment
Whether you’re upgrading insulation or starting fresh, we’re here to help make your space more comfortable and cost-efficient.
Call 226-333-HARP or request a quote online for a free, no-obligation estimate.
Harp Interiors – Trusted Insulation Experts in Sarnia, Chatham, London, St. Thomas, Cambridge, Kitchener-Waterloo & surrounding areas.
Foam board & Batt Insulation
Reliable Insulation, Built to Perform
Rigid foam board and batt insulation provide proven, cost-effective thermal protection for walls, basements, ceilings, and attics. Our professionally installed systems help stabilize indoor temperatures, reduce drafts, and support long-term energy efficiency—without compromising airflow or structural integrity.
What We Offer:
Thermal Imaging Inspections:
Identify heat loss, compression gaps, and moisture issues before they become costly problems.
Rigid Foam Board Insulation:
Excellent for basements, exterior walls, and remodels where high R-value and moisture resistance matter most.
Batt Insulation (Fibreglass & Mineral Wool):
A dependable, budget-friendly solution ideal for walls, attics, and joist cavities, installed to code for maximum performance.
Air Sealing & Moisture Control:
Reduce drafts, condensation, and mold risk while improving overall building efficiency.
Why Choose Harp Interiors?
- Professionally trained and certified installers
- 100% satisfaction guarantee with manufacturer-backed warranties
- Trusted experience across thousands of energy-efficient upgrades
- Solutions for homes, offices, and cottages
Get a Free Assessment
Whether you’re insulating a new build or upgrading an existing space, Harp Interiors delivers dependable insulation solutions that make your property more comfortable and energy efficient.
Call 226-333-HARP or request a quote online for a free, no-obligation estimate.
Harp Interiors — Trusted Insulation Experts in Sarnia, Chatham, London, St. Thomas, Cambridge, Kitchener-Waterloo & surrounding areas.