External Wall Insulation

What are the benefits?

If your property was built before 1920, or is of a concrete system-built type, its external walls are probably solid, meaning there is no cavity between the layers and they therefore let more heat through.

External Wall Insulation is a proven development in the reduction of heat loss from buildings.  External Wall Insulation systems act as a jacket to the building, keeping the warmth in whilst protecting the integral structure.

External wall insulation also reduces condensation on internal walls and can help prevent damp inside the property.

Another great benefit of external wall insulation is that it makes your property more atheistically pleasing from the exterior.

With this type of insulation, your property will be noticeably warmer. A good way to measure this benefit is in heat retention.

Every property ‘leaks’ warmth, and the rate in which it escapes is called the uValue. The higher the uValue, the faster heat escapes.

A typical solid walled
home uValue
A typical insulated solid
walled home uValue
2.1/2.3 0.29

This shows that heat retention is improved by more than 700%.

How does it work?

Solid walls can be insulated by fixing a layer of insulation material to the wall, then covering it with a special type of render or cladding. This is called External Wall Insulation (EWI). The finish can be smooth, textured, painted, tiled, panelled, pebble-dashed, or finished with brick slips.


How much does it cost?

If your property falls within the ECO scheme we may be able to undertake the work completely free!

If your property does not quality under the ECO Scheme we can provide quotes on a case-by-case basis. Our costs include insulating your whole house in one go, fully redecorating and replacing everything just as it was.

An alternative, and possibly cheaper option, is to insulate a wall whenever you are doing something else to it anyway. Fitting the insulation work in with your other property improvements not only saves money on the job, it also spreads the cost of the insulation as you work your way round the house. We are happy to accommodate any reasonable requests.

How much can I save?

Solid walls let through twice as much heat as cavity walls do, so you can cut your heating costs considerably. The actual saving depends on your heating system and other factors, but as an example, a typical 3-bedroom semi-detached house could see the following savings:

<table >Cost savingsEnvironmental savingsUp to £600 per yearReduction in CO2 emissions by 1.9 tonnes per year

*Source: Energy Saving Trust, 2013

What is the process?

Whether your property qualifies under the ECO scheme, or you are taking advantage of our affordable insulation rates, we will carry out our work with as little disruption to you or your tenants.

Process Step One

The first stage of the installation process is the preparation of the external walls ready for the fitting of the insulation boards. This involves removal of any items on the outside walls (including electrical wires and hanging baskets) and the fixing of timber bearers.

Process Step Two

The insulation boards are bonded to the walls and mechanically fixed. They are then covered with render and reinforcing mesh before another layer of render is applied. This stage is usually completed within a week, however this is dependent on weather conditions, as the render has to be dry before the primer can be applied.

Process Step Three

The primer is also left to dry for a few days depending on weather conditions before the top coat is applied.

Process Step Four

The render stage does create mess but we will use ground sheets to protect the areas adjacent to the walls and protect the surrounding area. Any unavoidable mess will be tidied up and all rubbish will be removed.

Process Step Five

When the top coat has dried, we will then re-fit all of the items we removed from the outside of your house.

We can operate over the entire UK with the majority of our focus being Hampshire, Berkshire, West Sussex, Dorset and surrounding counties. Contact us today for a free site survey to establish whether this is the right type of insulation for you.