The Insulation Company helps homeowners arrange loft-insulation assessments, quotations and installation services across the UK.
South East · England
Portsmouth is Britain's only true island city, and its density shows in the housing. Long Victorian and Edwardian terraces run street after street across Portsea Island, built tight together with little room to spare, and many have shallow lofts that are genuinely low on headroom. Post-war rebuilding after wartime bombing added pockets of newer housing, and the suburbs toward Cosham and Drayton carry interwar and later semis. On a compact, exposed coastal island, loft work has to respect both cramped roofs and a demanding maritime climate.
We help homeowners across Portsmouth and the surrounding Hampshire 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 terraces of Portsea Island — through Fratton, Buckland and North End — frequently have low, shallow lofts with awkward access over a stair and original insulation that has thinned or compressed with age. Headroom is often the real constraint: there simply isn't much depth to build up into, which changes both the method and the material. Post-war rebuilt homes and the semis toward Cosham and Drayton tend to have more usable loft space, where a top-up over sound existing wool is usually the practical route and boards are often laid straight onto the joists for storage.
Being surrounded by the sea, Portsmouth is exposed to salt-laden, humid air and driving coastal wind, so ventilation matters as much as insulation. In the island's shallow terrace lofts it is easy to block what little airflow the eaves allow, so we keep them clear and treat airflow and insulation together. Where headroom is very limited, we recommend a build-up and material suited to the actual space rather than a standard depth that simply will not fit.
The exposed coastal setting means humidity and condensation are common in Portsmouth lofts, particularly where ventilation is poor. Insulation alone will not cure a moisture problem, so we check the cause — airflow, a leak or an extractor venting into the roof — before recommending work.
In Portsmouth, cost is driven mainly by loft access and headroom on the island's terraced streets, whether old insulation needs removing, and any boarding or ventilation work. Tight parking and access on dense inner roads can also add to a job.
You tell us about your property and what you have noticed in the loft. Nothing is committed at this stage.
We review the property age, roof type, loft access and any existing insulation, moisture or ventilation concerns.
Where required, a survey or assessment is arranged so measurements and conditions can be checked in person.
You receive a clear written recommendation and quotation setting out the scope, materials, price and any guarantee.
Work is completed by The Insulation Company or an approved installation partner, with access protected throughout.
Final checks are carried out, the loft is left clean, and relevant documentation and any guarantee are supplied.
The bedrooms at the far end of James's long terrace ran colder than those near the boiler. We insulated the full 47m² length to 300mm, with careful detailing along the low brick side walls.
Portsmouth
Laura's rooms were cold and the loft draughty, with big cross braces that had stopped earlier roof upgrades. We topped the floor to 300mm and fitted SF19 SuperFOIL continuously around the bracing across the 47m² pitch.
Portsmouth
We help homeowners across Portsmouth and nearby Hampshire, from Fratton, North End and Buckland on Portsea Island to Cosham and Drayton, as well as Fareham, Gosport and Havant. Request an assessment and we'll confirm coverage for your postcode.
Usually yes, but limited headroom is the key constraint on the island's terraces. We assess the real depth available, keep the eaves clear for airflow, and recommend a build-up and material suited to the space rather than a standard depth that won't fit.
It does. Salt-laden, humid sea air and exposed wind make ventilation especially important here, so we look at airflow alongside insulation and check for condensation before recommending a build-up.
Customer feedback
Feedback from customers who have used our insulation services.
Very good, prompt and friendly service with an excellent result. Very pleased with the outcome. Well done lads.
Recommended. Friendly, efficient and did a great job in two very dirty loft spaces. All the waste shifted quickly. Top job. Thanks.
These guys are the best! Rory and Leo were very kind to me and got it all done in just a day. Thank you.
Jake and Rory supplied and fitted the insulation in our loft. They did an excellent job and I would recommend them.
It was refreshing to have two young lads who came in and worked incredibly hard on my loft. They came early and left late to get the job done. The best workers I’ve had in a long time, and I would recommend them 100%.
Good lads. They were professional throughout, took extra care and left the place spotless. We can already feel the difference with the fresh insulation.
