Cleaning to Perfection, One Site at a Time
Certainfil Cavity Insulation Limited is a proud, second-generation family business based in Belfast, Northern Ireland. With a strong focus on the installation of Bonded Bead Cavity Wall and Fibreglass quilting loft insulation, our team of certified experts is committed to providing exceptional service, ensuring customer satisfaction, and promoting environmentally-friendly practices in the process. As KIWA-certified installers, we proudly offer a 25-year Qualitymark Protection guarantee for our cavity wall installations and adhere to Building Control requirements for our loft installations.
Our Services
At Certainfil Cavity Insulation Limited, our core service offerings are designed to significantly reduce heat loss in your home, leading to lower fuel bills and a reduced carbon footprint. Our expert team handles the entire insulation process, providing a comprehensive solution that includes:
1. *Surveying*: Our experienced surveyors will inspect your property and provide a no-obligation quote for the insulation work.
2. *Drilling*: We will strategically drill your property at specific points, allowing complete access to the entire cavity for the injection of insulation.
3. *Filling*: Following a unique drill pattern, we ensure your cavity is completely filled with the appropriate insulation for optimal heat retention.
Bonded Bead Cavity Wall Insulation
Our Bonded Bead Cavity Wall Insulation system utilizes a high-grade silver graphite expanded polystyrene (EPS), designed to deliver up to 20% more heat loss reduction than the traditional white bead alternative offered by some installers. The beads are manufactured and delivered at the required density to ensure consistent performance upon installation. Beads are blown and bonded into the cavity with an adhesive, filling the space and forming a cohesive mass.
We use a specific drilling pattern outlined in the KIWA Agrement, which guarantees that your cavity will be 100% filled with the insulation beads. As an added benefit, the insulation is non-absorbent, ensuring no water absorption, which has led to the product's popularity in the fast-food industry for hot drink consumption.
Loft Insulation
Our Fibreglass quilting loft insulation methods ensure that your loft meets Building Control requirements and contributes to a warm and efficient home. Proper insulation ensures a reduction in heat loss and prevents the growth of black mould within the house, subsequently reducing heating bills by up to 40% and protecting the environment through reduced carbon emissions.
The Affordable Warmth Scheme
Certainfil Cavity Insulation Limited is authorised to carry out work under the Affordable Warmth Scheme, a Department for Social Development initiative addressing fuel poverty in the private sector across Northern Ireland. Qualified applicants can access grants for various energy efficiency measures, including insulation, ventilation, and draught-proofing services offered by Certainfil Cavity Insulation Limited. Please contact us for more information about the scheme and the services we provide.
Customer Satisfaction
The majority of reviews are positive, with customers praising the company's professionalism, tidiness, and excellent service. Many reviewers have mentioned that the installers were courteous, clean, and efficient, leaving their homes in a good condition after the work was done.
Negative Experiences
However, there are a few negative reviews. One reviewer had a poor experience with the company's customer service, waiting nearly a month for a survey after being asked to provide contact details and address. Another reviewer reported an unacceptable delay in receiving a callback after a phone call inquiry.
Summary of Reviews
The reviews highlight the importance of having a professional and tidy team, efficient communication, and a sense of responsibility for completing the job. The majority of customers have been extremely satisfied with the service provided by Certainfil.

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