Business Details
Professional Insulation Solutions in Belfast
Certainfil Cavity Insulation is a second-generation family business dedicated to providing high-quality insulation solutions across Northern Ireland. Specialising in Bonded Bead Cavity Wall and Fibreglass Loft Insulation, we combine technical expertise with industry-leading certifications to deliver energy-efficient results. As KIWA Agrment Board-certified installers, our cavity wall installations come with a 25-year Qualitymark Protection guarantee, while our loft insulation meets strict Building Control standards. We prioritise innovative methods like external installation to ensure minimal disruption, completing most projects in a single day without requiring homeowners to be present. Our commitment to environmental responsibility and cost savings is reflected in our 0% VAT offering, which helps reduce heating bills by up to 40% while lowering carbon footprints.With over 30 years of proven performance and no reported failures in the UK, we use non-absorbent silver graphite bonded beads that outperform traditional materials by 20%. Our team adheres to precise drilling patterns to guarantee 100% cavity coverage and offers specialist extraction services for defective insulation. We actively participate in government schemes like the Affordable Warmth Scheme, providing eligible customers with grants for energy efficiency improvements. Our comprehensive approach addresses heat loss through walls and lofts, reducing risks of damp and black mould while enhancing home comfort. Backed by partnerships with builders and compliance with evolving insulation standards, we deliver solutions that balance technical precision with customer-centric service.
Services
Cavity Wall Insulation
Loft Insulation
Partial Fill Insulation
Insulation Extraction
Grant Assistance
Highlights and features
- We offer 25-year KIWA-certified guarantees on cavity wall installations
- Our bonded bead insulation is 20% more effective than traditional materials
- We provide 0% VAT insulation services as approved by HMRC
- Our team completes most installations in one day without requiring access inside homes
- We participate in the Affordable Warmth Scheme for eligible customers
Associations and certifications
- KIWA Agrment Board
Services
Cavity Wall Insulation
Our cavity wall insulation uses silver graphite bonded beads that are 20% more effective at reducing heat loss than traditional materials. The external installation process requires no indoor access, completing most jobs in one day. KIWA-certified installations come with a 25-year guarantee against defects, ensuring long-term energy savings and reduced heating bills.
Loft Insulation
We install 270-300mm of fibreglass quilting to meet current building regulations, significantly improving thermal efficiency. Our innovative storage solutions maintain accessible loft space while maximising insulation depth. This reduces heat loss through roofs by up to 25% and helps prevent condensation-related issues like black mould.
Partial Fill Insulation
For homes built after 1985 with existing 30-50mm insulation boards, we add bonded beads to triple insulation levels. This process improves SAP ratings and reduces fuel bills by enhancing thermal performance in 100mm cavities. The solution addresses modern building standards while maintaining cavity drainage functions.
Insulation Extraction
We remove defective mineral wool, fibreglass, or poorly bonded bead insulation using specialist vacuum equipment. The process involves drilling small holes to extract materials while preserving structural integrity. After clearance verification, we reinstall high-performance bonded beads to restore insulation effectiveness.
Questions
What insulation services do you offer?
We provide cavity wall insulation, loft insulation, partial fill cavity insulation, and defective insulation extraction services across Northern Ireland.
Are your services eligible for government grants?
Yes, we participate in the Affordable Warmth Scheme, offering eligible customers grants for energy efficiency improvements including insulation.
Why use bonded bead insulation?
Bonded beads are 20% more effective than traditional materials, won't settle or absorb water, and provide guaranteed 100% cavity coverage with no voids.
Can you remove old insulation?
Yes, we use specialist equipment to extract rockwool, mineral fibre, and defective bead insulation while minimising structural disturbance.
What are your working hours?
Office hours are Monday-Friday 9am-5pm, with emergency contact available 7 days a week until 10pm via mobile.
Do you offer guarantees?
Yes, our cavity wall installations come with a 25-year KIWA Qualitymark Protection guarantee against defects.
