Free Insulation Quote

Guelph's Premier Attic Insulation Experts

Transform your $Guelph home with professional attic insulation that cuts energy costs by up to 50%, eliminates drafts, and creates year-round comfort. Ontario's climate demands superior insulation performance - we deliver.

50% Energy Savings

Up to $2,250/Year

$11,250 Rebates

Government Programs

Lifetime Warranty

Full Coverage

Get Your Free Attic Assessment

🔥 60% OFF Install - Ends October 31st! ✨

Your information is 100% secure and confidential

15,000+
Attics Insulated in Ontario
$1,800
Average Annual Savings
4.9★
Google Rating (800+ Reviews)
R-60
Maximum R-Value Achieved

Expert Attic Insulation Services in Guelph

Improve your Guelph home's energy efficiency with professional attic insulation. Our expert installation reduces heating and cooling costs while improving comfort.

Why Professional Attic Insulation Outperforms DIY

Custom Contracting uses advanced materials and proven techniques that deliver measurable results. See how professional-grade insulation compares to standard options.

Insulation Performance Comparison

Performance MetricOur Premium SystemStandard ContractorDIY InstallationNo Insulation
R-Value AchievedR-50 to R-60R-30 to R-40R-20 to R-30R-8 to R-12
Energy Savings40-50%25-35%15-25%Baseline
Air Sealing QualityComplete SealPartialMinimalNone
Coverage Consistency100% Uniform85-90%70-80%N/A
Ventilation MaintainedEngineered BafflesBasic BafflesOften BlockedNo Issue
Warranty CoverageLifetime1-5 YearsNoneN/A
Government RebatesWe Handle AllVariesYour ResponsibilityN/A
Average ROI Period2-3 Years4-6 Years6-10 YearsNever
Guelph attic insulation 3D cross-section - Complete thermal barrier system

Complete Attic System View

Guelph insulation layer breakdown 3D - Multi-layer R-value construction detail

Multi-Layer Construction

Guelph attic ventilation baffle system 3D - Proper airflow and moisture control

Ventilation Flow Design

Our Professional Advantage

Complete Air Sealing First

We seal all attic bypasses, gaps, and penetrations before installing insulation for maximum efficiency

Proper Ventilation Design

Engineered baffle systems ensure continuous airflow from soffit to ridge, preventing moisture and ice dams

Uniform Coverage Technology

Commercial-grade equipment ensures consistent R-value across every square inch of your attic

Safety & Code Compliance

All installations meet or exceed Ontario Building Code requirements with proper clearances around heat sources

The Science of Insulation

Guelph's extreme temperature swings demand more than basic insulation. Our multi-layer approach combines air sealing, ventilation management, and high-density insulation to create a complete thermal envelope that performs year-round.

R-VALUE
R-60
Exceeds Code by 50%
AIR LEAKAGE
95%
Reduction Achieved
ENERGY SAVINGS
$2,250
Average Annual
PAYBACK
2-3 Yrs
Typical ROI Period

🏆 Ontario's Insulation Experts

Custom Contracting has insulated over 15,000 Ontario attics. Our crews are trained in building science principles, ensuring your insulation system works as an integrated part of your home's envelope.

See How Insulation Works

Guelph attic thermal imaging before/after - Heat loss visualization comparison

🌡️ Thermal Imaging Comparison

See the dramatic temperature difference with thermal imaging

Guelph heat flow visualization animation - Insulation thermal barrier performance

🔥 Heat Flow Visualization

Watch how proper insulation stops heat transfer

Guelph attic insulation installation sequence - Professional step-by-step process

⚙️ Step-by-Step Installation Process

Watch how our professional crews transform your attic

Complete Insulation Solutions for Guelph Homes

We offer multiple insulation types tailored to your attic configuration, budget, and performance goals. Every installation includes air sealing and ventilation optimization.

Blown-In Insulation Systems

Our most popular option for Guelph attics. Blown-in insulation fills every gap and cavity for superior coverage and performance. Fast installation with minimal disruption.

❄️

Fiberglass Blown-In

Pink or white fiberglass offers excellent R-value per inch, doesn't settle, and is non-combustible. Ideal for most attic applications.

  • R-2.5 per inch - reach R-60 with 24" depth
  • Fire-resistant and non-toxic
  • Doesn't settle or compress over time
  • Best value for maximum R-value
Starting from
$1.80/sq ft
For R-50 installation
🌿

Cellulose Blown-In

Made from recycled paper treated with fire retardant. Excellent for filling irregular spaces and historic home renovations.

  • R-3.5 per inch - higher density than fiberglass
  • 85% recycled content - eco-friendly choice
  • Superior sound dampening properties
  • Natural pest resistance
Starting from
$2.10/sq ft
For R-50 installation
Guelph blown-in insulation installation - Professional cellulose application process

Professional Installation in Action

Guelph insulation R-value depth measurement - Precise thermal resistance verification

Precise R-Value Measurement

⚡ Installation Process

1
Attic Inspection

Complete assessment of existing conditions

2
Air Sealing

Seal all gaps, bypasses, and penetrations

3
Baffle Installation

Ensure proper ventilation from soffit to ridge

4
Blow Insulation

Install to specified R-value with uniform coverage

Transform Your Guelph Home with Attic Insulation

Professional attic insulation delivers benefits that go far beyond energy savings. Experience comfort, health, and value improvements throughout your home.

Guelph attic insulation energy savings graph - Annual cost reduction analysis

Slash Your Energy Bills

Heating and cooling account for 50-70% of your home's energy use. Proper attic insulation is the single most effective upgrade to reduce energy waste and lower monthly bills.

Average Annual Savings$1,800-$2,250
Energy Use Reduction40-50%
Typical ROI Period2-3 Years
Lifetime Savings (30 years)$54,000+

Government Rebates & Incentives

Canada Greener Homes Grant
Up to $7,500 for insulation upgrades
Enbridge Gas Rebates
Additional $1,500+ available
Interest-Free Loans
Up to $60,000 financing available
Total Potential Savings
Up to $11,250
We handle all paperwork!

Our Proven Insulation Process

From initial assessment to final cleanup, we follow a systematic process that ensures superior results and complete customer satisfaction.

01

Free Home Energy Assessment

Comprehensive attic inspection, thermal imaging, R-value measurement, and customized recommendations

02

Detailed Proposal & Rebate Planning

Transparent pricing, material options, timeline, and assistance with all available rebate programs

03

Professional Installation

Air sealing, ventilation baffles, insulation installation to spec, all safety protocols followed

04

Quality Assurance & Documentation

Final inspection, R-value verification, before/after photos, warranty registration

What Makes Us Different

Complete air sealing before insulation installation
Certified technicians trained in building science
Commercial-grade equipment for consistent coverage
We handle all rebate paperwork and applications
Lifetime workmanship warranty included
Same-day cleanup and job site protection

Average Project Timeline

Energy Assessment1 Hour
Proposal & Planning2-3 Days
Installation Work1-2 Days
Post-InspectionSame Day
Total Project Duration
5-7 Days
From assessment to completion

Signs Your Guelph Home Needs Attic Insulation

Recognizing these common problems can help you identify when it's time for an insulation upgrade. Many Guelph homes suffer from these issues unnecessarily.

💸

High Energy Bills

  • Bills increase each year
  • HVAC runs constantly
  • Never comfortable despite high usage
🌡️

Uneven Temperatures

  • Cold rooms in winter
  • Hot upstairs in summer
  • Floor-to-floor temperature differences
❄️

Ice Dams & Icicles

  • Large icicles on eaves
  • Ice buildup in gutters
  • Interior water stains
💨

Drafts & Air Leaks

  • Cold air around light fixtures
  • Drafty rooms
  • Dust accumulation
💧

Attic Moisture Issues

  • Condensation on roof deck
  • Mold or mildew smell
  • Frost in attic spaces
🐭

Pest Infestations

  • Rodent droppings in attic
  • Animal noises overhead
  • Damaged insulation
⚠️

Don't Wait for Problems to Worsen

Many homeowners put off insulation upgrades until major problems develop. Poor insulation doesn't just waste money - it can lead to structural damage from moisture, health issues from mold, and significantly reduced home comfort.

Schedule Free Assessment

Proudly Serving Homeowners Across Guelph

Our insulation crews serve all Guelph neighborhoods with fast response times and local expertise

Downtown Guelph

Old University

Exhibition Park

St. George's

Onward Willow

Westminster Woods

Kortright Hills

Hanlon Creek

University Hill

Willow West

Attic Insulation Questions Answered

Common questions from Guelph homeowners about attic insulation

What R-value do I need in Guelph?

Ontario Building Code recommends R-50 minimum for attics in our climate zone. We typically install R-50 to R-60 for optimal performance and maximum energy savings. This exceeds code requirements and provides the best long-term value.

How long does attic insulation installation take?

Most residential attics (1,000-1,500 sq ft) take 1-2 days to complete, including air sealing and ventilation work. Larger homes or complex attic spaces may require additional time. We always provide a detailed timeline in your proposal.

Can I add insulation over existing insulation?

Yes! Adding blown-in insulation over existing material is common and cost-effective. We first inspect for moisture issues, remove any damaged insulation, complete air sealing, then add new material to reach target R-value.

How much can I save with government rebates?

Guelph homeowners can access up to $11,250 in combined federal and provincial rebates for insulation upgrades. We handle all paperwork, applications, and energy audits required. The rebates significantly reduce your out-of-pocket investment.

Will insulation help with ice dams?

Absolutely! Ice dams form when heat escapes through the roof, melting snow that refreezes at eaves. Proper insulation combined with air sealing and ventilation keeps your roof deck cold, preventing ice dam formation.

What about ventilation - won't insulation block airflow?

Our installation includes engineered ventilation baffles that maintain continuous airflow from soffit to ridge vent. Proper ventilation is critical for insulation performance - we never compromise on this aspect.

Serving Communities Across Southern Ontario

Professional attic insulation services throughout the region

Ready to Start Saving on Energy Costs?

Join thousands of Guelph homeowners who have transformed their homes with professional attic insulation. Get your free assessment today and discover how much you can save.

$11,250
Available Rebates
50%
Energy Savings
Lifetime
Warranty Included

Serving all Guelph neighborhoods • Same-day assessments available

Frequently Asked Questions

Get answers to common questions about our services, installation, warranties, and maintenance.

Complete Your Home Exterior Project in Guelph

Many Guelph homeowners choose to bundle services for better pricing and convenience. Save up to 15% when you combine attic insulation with these related services:

Save Up to 15% on Bundled Services

Protect your entire home exterior and save money. Our Guelph team can handle multiple projects seamlessly, saving you time and maximizing your investment.

We Also Serve Nearby Communities

Looking for attic insulation in a nearby city? We proudly serve communities throughout Ontario with the same expert service you'd expect in Guelph.

Don't see your city? View all service areas →

Our Guelph Experience

Our team has been serving Guelph homeowners with hands-on expertise for years. We've completed thousands of projects across every neighborhood, understanding the unique challenges of Guelph's climate, building codes, and property types.

8+
Years Serving Guelph
1,200+
Local Projects Completed
98%
Customer Satisfaction Rate

Professional Certifications & Expertise

Industry Certifications

  • WSIB Registered & Compliant
  • Ontario Master Contractor License
  • TSSA Certified (Technical Standards & Safety Authority)
  • CertainTeed ShingleMaster™ Certified
  • GAF Master Elite® Contractor
  • ENERGY STAR® Partner

Manufacturer Partnerships

  • Carrier Factory Authorized Dealer
  • Lennox Premier Partner
  • IKO Roofing Preferred Contractor
  • Owens Corning Platinum Preferred
  • James Hardie Elite Preferred Contractor
  • Pella Certified Installation Expert

All our contractors are: Licensed, insured, background-checked, and continuously trained on the latest industry standards and techniques. We invest in ongoing education to ensure we deliver cutting-edge solutions.

Industry Recognition & Awards

4.9★
Google Rating
427+ Reviews
Best of 2024
HomeStars
Top Rated Contractor
2023-2025
ThreeBest Rated
3 Years Running
A+ Rating
BBB Accredited
Accredited Business

Industry Memberships & Affiliations

Ontario Home Builders Association (OHBA) Member
Better Business Bureau Accredited
Heating, Refrigeration and Air Conditioning Institute (HRAI)
Canadian Home Builders' Association
Residential Construction Council of Ontario
National Roofing Contractors Association

Our Guarantees & Commitments

🛡️

Lifetime Workmanship Warranty

All our installation work is backed by our lifetime workmanship warranty

💰

Transparent Pricing

No hidden fees. Detailed quotes with all costs itemized upfront

Satisfaction Guarantee

We don't consider the job done until you're 100% satisfied

Licensed & Fully Insured

Insurance Coverage

  • $7 Million General Liability Insurance
  • WSIB Coverage for All Workers
  • Bonded Contractor Protection

Payment Security

  • Flexible Payment Options (Cash, Credit, Financing)
  • 0% Financing Available (OAC)
Custom Contracting Van with 60% OFF Billboard
60% OFF
Installation
Limited Time Offer!
⏰ Ends October 31, 2025
✅ All Roofing, Siding, Windows & More

Get Your FREE Estimate!

Don't miss this 60% OFF offer! Contact us today.

📞 Call Us

(226) 799-4975

Open 24 Hours

📍 Visit Us

45 Worthington Dr Unit H
Brantford, ON N3T 5M1

🔥 60% OFF Install - Ends October 31st! ✨

⚡ Limited spots available - Offer ends October 31!