Internal wall insulation, loft insulation, flat roof insulation and room in roof insulation. Get the fabric right first and everything else — heating, solar, ventilation — works better and costs less to run.
Insulation is not the most glamorous part of a retrofit programme, but it is often the most important. A heat pump working in a poorly insulated property has to run harder, costs more, and never quite gets the house comfortable. Solar savings get eroded if heat is leaking through the walls and the roof faster than the system can compensate. Get the fabric right first and everything else performs better.
We deliver insulation as part of multi-measure retrofit programmes, coordinated alongside heating upgrades, Solar PV and all associated electrical works. The sequencing matters. Insulation goes in before the heating system is commissioned. Ventilation needs considering when you tighten up the building fabric. The electrical work needs to happen at the right point. Because we do all of this ourselves, the timing works and nothing falls between the cracks.
IWI for solid wall properties where external insulation is not an option — listed buildings, shared boundaries, properties where the external appearance cannot change. This is the one that needs the most care. Get the moisture management wrong and you create damp and mould problems that are worse than what you started with. We understand the building physics. Vapour barriers, interstitial condensation risk, thermal bridging at junctions — we take all of it seriously because we have seen what happens when someone does not. Every IWI installation is carried out to PAS 2035 standards.
The most cost-effective starting point for most properties. Quick to install, immediate impact on heat retention, and often the first measure in a funded programme. We top up to current standards where existing insulation has settled or deteriorated, or install from scratch where there is none. We also check for and address any ventilation issues in the loft space — blocking up the eaves to keep the heat in but forgetting the ventilation is a common mistake that causes condensation problems.
Flat roofs are notoriously poor for heat loss, particularly on older properties and extensions. We insulate from above or below depending on the construction and access. Getting the warm deck versus cold deck approach right matters — the wrong one in the wrong situation leads to condensation within the roof structure. We assess the existing construction before recommending the approach and make sure the ventilation is addressed as part of the installation.
Converted loft rooms, dormer bedrooms, rooms built into the roof space — these are some of the hardest areas to insulate effectively because the space is tight, the geometry is awkward, and the access is often limited. We insulate between and under the rafters, address the cold spots at the eaves and gable ends, and make sure the ventilation path above the insulation is maintained. Done well, a room in roof goes from the coldest room in the house to one of the most comfortable.
Moisture management, vapour barriers, interstitial condensation, thermal bridging. Getting insulation wrong — particularly IWI — causes damp, mould and structural damage. We know what we are doing and we take the building science seriously.
Insulation is sequenced alongside heating upgrades, Solar PV and electrical works as part of a single programme. One team, one timeline. No separate contractors scheduling around each other and nobody arguing about whose job it is to fix the snagging.
Tighten up the building fabric without addressing ventilation and you create condensation problems. We assess the ventilation as part of every insulation job and make sure the property can breathe properly once the work is done.
Every installation is carried out to PAS 2035 standards. Photographed, evidenced and lodged through TrustMark before we leave. When the auditors check the paperwork, it is all there.
Whether it is part of a wider retrofit programme or a specific property that needs attention, drop us a line and we will have a straightforward conversation about what makes sense.