Wall insulation and more

We’ve been improving energy efficiency for homes throughout Berkshire, Surrey, Hampshire and Oxfordshire since 1980. Whatever the size or age of your property, we’re always happy to see how we could improve its comfort and appeal. Whether that means Solid Wall insulation, Cavity Wall insulation, Loft insulation, an efficient new Boiler, Double Glazing or Solar Energy. We also install specially designed insulation systems for Park Homes.

We’re known as leading wall insulation installers, but we can offer expertise in external Render without insulation for a quick and cost-effective way to refresh the look of your property.

Insulation installers you can trust

You can trust us from initial expert survey through to professional installation. All of our workmanship is fully accredited and guaranteed, with product warranties of up to 25 years.

We save energy for homes in the areas surrounding Reading, Basingstoke, Bracknell, Guildford and Oxford.


Make rooms cosier and save on energy bills with our leading insulation solutions. From external (solid wall) insulation and cavity wall insulation, to loft insulation and innovative park home insulation, ask InstaGroup for the best way to reduce heat loss and improve efficiency. We also offer render without insulation to refurbish property exteriors quickly and economically.

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Boilers and Heating

Waking up to a warm home, stepping into a hot shower -- even doing the washing up. We all rely on our boilers to keep the household running smoothly. With an efficient new boiler you can count on your heating and hot water every day, while also saving energy and money. We install only quality boilers from reputable manufacturers such as Worcester Bosch.

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Doors & Windows

Installing double glazing is a sure way to reduce your energy bills. Adding double glazed doors and windows not only makes your home warmer and less draughty, it also reduces outside street noise and improves security. Find out more about our energy efficient doors, windows and bi-fold doors that can make your home more welcoming and comfortable.

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Solar Energy

The electricity generated by our highly effective solar panel systems can protect your home from rising energy prices while generating extra income for you. We now offer efficient solar energy batteries too, so you can enjoy cheap electricity even when the sun doesn't shine. All of our high quality solar arrays are installed by experts.

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#GasSafetyWeek is back around to remind us how important it is to be informed about gas appliances in our homes.

Did you know that one third of people don't know the signs of an unsafe gas appliance?

Read all about it by following the link below.