External Wall Insulation
Insulating solid walls with external Wall Insulation (EWI) can help reduce some of the 35% of heat loss that occurs from this area of a property.
EWI is a fantastic solution that can insulate older properties and those that that don’t have post-1930s cavity walls. External wall insulation has a greater impact on the energy efficiency of a property than brand new A-rated double glazing or a new condensing gas boiler.
The U-value (measurement of heat loss – the lower the number the better) of a typical 220mm solid brick wall is between 1.9 to 2.2W/m²K – applying 100mm of the EWI Pro expanded polystyrene (EPS) solution with mechanical fixings, reinforcing adhesive and a silicone-silicate render should bring down the U-value of the walls to 0.27W/m²K (better than current building regulations for new builds – 0.28W/m²K).
Our external wall insulation systems also provide a significant upgrade to the appearance of your property. We offer a huge range of different finishes, including different render granularity, almost limitless colours, brick slips and even pebble dash systems.
How is external solid wall insulation installed?
EWI is installed by applying a layer of EPS to the outside of the exposed walls of your home. The material is stuck to the walls initially with concrete adhesive and then reinforced by mechanical fixings and plastic caps.
The system is further reinforced by a layer of adhesive and reinforcement mesh before a final render (and optional layer of brick slips) is added. The system should prove to be a durable solution, lasting the test of weather and time, whilst providing superb insulating performance.
How long does the installation process take?
The install time is very dependent on the size of the property, but since the different layers take time to dry, you should expect a job to take between 1 and 2 weeks. The good news is that since all the work is external, there should be very little upheaval for those living in the property at the time.
What areas does BeConstructive cover?
We are pleased to announce that we now install solid external wall insulation nationwide. Initially we were focused solely on installing solid wall insulation in the London area, but demand for our services has resulted in us vastly increasing capacity, so wherever you are in the UK we will be able to help!