The benefits

Homes with solid walls can be insulated either externally or internally.While both perform with similar heat retention and savings, the cost of carrying out an external wall insulation is higher, and it also comes at the cost of losing the original external character of the building.

A lot of heat is lost through ‘solid walls’, so installing Solid Wall insulation could make a huge difference to your home’s energy efficiency and comfort. As well as keeping in the warmth, InstaGroup’s highly effective system could cut home heating bills by as much as £650 every year1 depending on the size of your property.

If your home was built before the 1920s it’s likely to be of solid wall construction and could benefit from adding efficient insulation. We can find out the best solution for your property with our no-obligation home assessment.

Improves your home, inside and out

Installing Solid Wall insulation improves a property inside and out. Your home becomes warmer and more welcoming, with the added advantage of increased kerb appeal from a fresh and attractive makeover of the outside walls.

Installation is professionally planned and takes place outside your property. Our Solid Wall insulation system is made up of robust rail frame and specialised insulation boards, and finished with an attractive weather-proof render. We offer a variety of render colours and finishes, so you can choose how to improve or add to the outside look and character of your property.

Installing Solid Wall insulation makes your home easier to keep warm in the winter, and keeps it pleasantly cooler in summer. You’ll find rooms are noticeably quieter too.

Contact us or call our friendly team on 01274911099

If your home is made of brick, and the bricks have an alternating long-short-long pattern like this, then the walls are likely to be solid. If you can see only the long edge of the bricks, like this, then they are almost certainly cavity walls.

If the brickwork is not visible, measuring the thickness of the wall at any entrance or window will help to determine the construction type. A solid brick wall is usually about 22cm thick, a cavity wall between 27cm and 30cm and a solid stone wall as much as 50cm thick. The age of your home can also be a good indicator; if it was built before the late 1920s it is likely to have solid walls.

Following your survey, our expert installer team will have been fully briefed for your property’s individual needs.

  1. The installers will use a range of specialised Solid Wall solutions including our All-Weather system.
  2. Installation will generally take 1–2 weeks, but installation times will vary from home to home, depending on its size, ease of access and amount of windows, doors, drain pipes etc.
  3. All installations are dependent on favourable weather, and very wet or very cold conditions can delay timings. This is for safety and to ensure the quality of workmanship and finish. We aim to get the project completed in good time, and will always keep you informed should weather hold up the installation.
  4. You are assured of the highest standards of workmanship throughout. All of our technicians are professionally trained and accredited, and the products and systems we use are fully approved and meet current regulations.
  5. Our installers will be professional and polite and work cleanly and efficiently, ensuring that there is minimal disruption to you and your neighbours.
  6. Our Solid Wall installations come with a 25-year guarantee.

Solid Wall insulation can reduce heating bills substantially. Savings are estimated to be up to £650 a year, depending on the size and type of home.

  • The cost of installing Solid Wall insulation will obviously vary for each property.
  • We may offer discounts when we install energy efficiency improvements as a package, e.g. ordering replacement double-glazed doors or windows to go with a Solid Wall installation.
  • Ask if grants are available.

All installations are carried out by Construction Circle’s experienced technicians using only SWIP products approved by BBA.

All our installations are registered with Trust Mark


  • How do I know if my home has solid walls?

    • It will reduce heat loss in your home.
    • Insulating you loft will help keeping more heat inside your home and reduce the amount of energy hence reduced energy bill and saving money
    • You will have minimal disruption to your home as It is quick and easy to install.
    • Once installed it is maintenance free
  • How Much Floor Space Will I Use With Internal Wall Insulation?

    The thickness of internal wall insulation varies from brand to brand, but you can expect it to be anywhere from 60mm to 100mm — largely, the more expensive the insulation, the thinner its profile. You should expect to lose at least 100mm on each wall when insulating interior walls.

  • What does external wall insulation involve?

    External solid wall insulation involves adding a layer of insulating material to the outside walls of a building and coating this with a protective render or cladding. There are lots of options to create the finish that you want and these may even add value to your home.

    External solid wall insulation, rather than internal, may be particularly suitable if you want to avoid any loss of space or the disruption of work going on inside your house, or if you are doing other work to the exterior of your property, such as re-rendering. It is a specialist job that requires an approved installer who will specialise in work using a specific insulation system.

Under the current ECO scheme, you can qualify for Solid Wall Insulation for free if you’re eligible to improve your home’s energy efficiency. Check if you are eligible.