The Insulation Company helps homeowners arrange loft-insulation assessments, quotations and installation services across the UK.
South Wales · Wales
Cardiff's housing runs from long Victorian and Edwardian terraces in Cathays, Roath and Canton to interwar semis in Llanishen and Whitchurch and modern estates around the city's edge and Cardiff Bay. That mix means loft work here is rarely one-size-fits-all: an older terrace with a shallow, hard-to-reach loft and original roofing felt needs a very different approach from a 1990s house with existing insulation and a boarded hatch.
We help homeowners across Cardiff and the surrounding South Wales area arrange loft assessments, quotations and installation. Depending on the service, work may be completed by The Insulation Company or an approved installation partner.
The dense terraced streets of inner Cardiff often have compact lofts with limited headroom, awkward access over a stairwell, and thin or ageing insulation — sometimes laid decades ago and since compressed. Suburban Cardiff has a large stock of 1930s–1960s semis where a top-up over sound existing wool is frequently the sensible route, and where boards have often been laid straight onto the joists for storage. Newer homes toward Pontprennau and the Bay usually have some insulation already, so the question is whether adding more, or improving ventilation and boarding, is worthwhile.
Wales's wetter, milder climate makes ventilation and moisture worth close attention. Piling insulation into the eaves of an older Cardiff terrace can block what little airflow the roof has and encourage condensation, so we keep the eaves clear and look at ventilation and insulation together. Where older bituminous roofing felt is present beneath the tiles, we assess how the roof breathes before recommending a build-up.
Coastal, higher-rainfall conditions mean condensation and damp complaints are common in poorly ventilated Cardiff lofts. Insulation alone will not fix every moisture problem, so we check for the actual cause — airflow, a roof leak or an extractor venting into the loft — before recommending work.
In Cardiff, cost is driven mainly by loft access on terraced streets, whether old insulation needs removing, and any boarding or ventilation work. Parking and access on narrow inner-city roads can also be a factor.
Many Cardiff lofts already have some insulation. Where it is sound we can top it up to a suitable wool build-up; where it is damp, contaminated or compressed we remove and replace it. A short assessment tells you which applies.
Michael's rear bedrooms stayed colder than the rest of the house. With a chimney breast dividing the 36m² loft, we cut and fitted 300mm of Knauf glass mineral wool around the brickwork for even coverage across the whole floor.
Cardiff
Emma's upstairs warmed slowly and the landing felt cold. We topped the floor to 300mm, added SF19 SuperFOIL across the 46m² roof pitch and retained a 7m² T-shaped access platform around the hatch.
Cardiff
We help homeowners across Cardiff and nearby South Wales, from Cathays and Roath to Whitchurch, Llanishen and Cardiff Bay, as well as Penarth, Barry and Caerphilly. Request an assessment and we'll confirm coverage for your postcode.
Usually, yes, though a cramped loft with awkward access changes the method and the material choice. We assess the space, keep the eaves clear for airflow and recommend a suitable build-up rather than forcing a standard approach.
Wales's wetter climate makes ventilation important. If you have noticed condensation or staining, we look at the cause — airflow, a leak or an extractor venting into the loft — because insulation alone will not fix a moisture problem.
Customer feedback
Feedback from customers who have used our insulation services.
An incredibly professional and efficient service. I can’t fault them in the slightest and would recommend them to anyone looking for this kind of service.
The crew showed up on time, explained everything clearly, finished faster than expected, and we noticed the house felt more comfortable almost immediately.
I was looking at getting my roof insulated but was shocked by the price of some of the quotes I received. I stumbled across these guys and could not be more pleased. Great quality work for a fantastic price.
Smooth and stress-free process. The team were polite, efficient and did a great job. Really pleased with the results. Thanks guys!
These guys were the nicest and provided the best service. They did the job much quicker than expected. Very happy with the job and the price. Highly recommend.
The boys were very kind and well advised. They got the job done quickly and smoothly. My loft was in pretty bad shape, as I have a slight hoarding problem, and they passed no judgement. Thank you for your service.
