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Cavity wall insulation.

Around one-third of the heat loss from domestic properties is lost through the walls. That’s a lot of heat loss. What’s more, it’s heat loss that householders can prevent.

By insulating your cavity walls, you can not only save up to £155* per year on your energy bills, but you will also benefit from a more comfortable home throughout the year. In the colder months it will make your home warmer by retaining heat in the property, and in the summer, it will be cooler by keeping the heat out.

These aren’t the only benefits. By ensuring your cavity walls are adequately insulated, you are playing your part in helping to reduce carbon emissions, while improving the energy performance rating of your home.

Cavity wall insulation.

Around one-third of the heat loss from domestic properties is lost through the walls. That’s a lot of heat loss. What’s more, it’s heat loss that householders can prevent.

By insulating your cavity walls, you can not only save up to £155* per year on your energy bills, but you will also benefit from a more comfortable home throughout the year. In the colder months it will make your home warmer by retaining heat in the property, and in the summer, it will be cooler by keeping the heat out.

These aren’t the only benefits. By ensuring your cavity walls are adequately insulated, you are playing your part in helping to reduce carbon emissions, while improving the energy performance rating of your home.

About Bonded-bead systems

Much like the beads in a bean bag, Bonded Bead is made from Polystyrene. However, it is made with Carbon or Graphite, this addition reflects more of the heat making it far more efficient as an insulation material.

When it arrives at the processing plant it is hard tiny beads. These beads have pentane gas trapped inside and pentane expands when heated, so the material is put through expanding machinery. This mixes the beads with steam and air, increasing the beads by up to 60 times its original size.

The speed of expansion is carefully controlled to end up with beads with a known specific density. To achieve the best insulation possible the bead is processed twice before being loaded onto trailers for distribution, ready to be installed into cavity walls.

The benefits of bead cavity wall insulation

Ease of Installation

It is typically injected into the cavity wall through 22mm holes, approximately the size of a 10p piece, drilled through the mortar joints. Far fewer holes are required than with other insulation systems and the process is quite quick and painless. A typical semi-detached house can be insulated within a few hours and the benefits are immediate.

Flowability

Being lightweight round beads, it has an incredible ability to fully fill the cavity leaving no gaps or voids. When injected it flows like a thick liquid into every space where the adhesive dries leaving a stable homogenous product. It’s the remarkable free flowing nature that means less injection holes are needed.

Moisture dissipation

Every product used to insulate cavity walls has to endure a three-week water permeability test. This is to replicate wind driven rain against a brick-built cavity wall. As the test progresses the air pressure and water spray increase to storm conditions.

Bead cavity wall insulation still allows the cavity to work as intended rather than creating a physical barrier. Water can still enter the cavity, but rapidly flows through the beads to the bottom of the wall. It does this through the tiny spaces between each of the round beads. Householders should be reassured is that the bead system doesn’t rely on water repellent additives, which can break down over time.

Bonded bead systems

  • Reduces heat loss rates of around 70%
  • Doesn’t absorb water, so no risk of rising damp or damp walls
  • It is an excellent free flowing material, so cavity walls are evenly insulated – avoiding cold bridging and localised condensation related damp.
  • It doesn’t break down and therefore is an effective insulant for the lifetime of your home.

Is it environmentally friendly?

Bead cavity wall insulation is Polystyrene, uh oh! That’s a plastic, however it isn’t the environmental arch enemy like single use plastics that our planet is suffering from. The advantage is that being a plastic it doesn’t break down or absorb water, therefore once installed it remains effective for the life of the building.

A percentage of the raw bead is actually made up of recycled plastic and as technology advances the percentage will increase, not only that, but the expanded polystyrene beads can also be recycled into other products when the time comes.

Because of its longevity and amazing thermal performance any perceived negatives are far outweighed by the energy savings achieved when insulating with Bonded- Bead.

Is bead cavity wall insulation tested and approved?

Our Bonded-Bead Systems have undergone lots of testing and still does to ensure consistency.

Due to the unique way in which ThermaBead Carbon Saver still allows the cavity to work as intended and the rigorous testing carried out, there is no exposure limit, allowing suitable properties to be insulated even in areas of extreme weather.

Why choose Domestic Energy Experts to insulate your cavity walls?

  • The management and survey teams at Domestic Energy Experts have many years’ experience leading the way in the cavity wall industry. Most of the team were leaders in the British Gas insulation division, trained to make the correct decisions for the customers property.
  • If you have issues with your current cavity wall system, we may be able to offer diagnosis and find solutions. There are many reasons cavity wall insulation in a property may fail or cause problems. Such as, a lack of ventilation, installation in unsuitable properties, or the wrong material.
  • Did you know 1000s of properties were insulated with fibre insulation in high exposure areas? The only fix for these properties may be to extract the old insulation and replace with a bonded bead system. We can arrange this for you. Often we will be able to provide this service free if you qualify for ECO.
  • Our Energy Expert Surveyors are qualified Retrofit Assessors and have Trustmark registered. The team also has in house Retrofit Coordinators to oversee each project.  
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