Installing wall insulation and more

InstaGroup is a local leader in wall insulation for homes throughout Berkshire, Surrey, Hampshire and Oxfordshire. We’ve been installing energy efficiency solutions since 1980, so whatever the size or age of your property, you can trust us to help improve its comfort and appeal.

Our services include installing Solid Wall insulation, Cavity Wall insulation and Loft insulationWe also install insulation systems especially designed for Park Homes.

Aside from wall insulation, our specialist teams can fit an efficient new Boiler, add Double Glazing and install Solar Energy for your home.

We’re known for our experience as wall insulation installers, but we also offer expertise in external Render without insulation. It’s a quick and cost-effective way to refresh the look of your property and add instant value and kerb-appeal.

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.

Ask us about installing wall insulation and more in the areas around Reading, Basingstoke, Bracknell, Guildford and Oxford. Get in touch now, and see how we could help you improve your home energy efficiency, stay warmer and save money.


Make rooms cosier and save on energy bills with our leading solutions. We offer Solid Wall (External Wall) insulation, Cavity Wall insulation, Loft insulation and innovative Park Home insulation. We also offer external Render without insulation to refurbish and refresh the look of your property 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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Landlords now have to allow up to £3,500 to improve the energy efficiency of rented homes. For expert advice on insulation and ECO grants call 0800 023 2944