frequently asked questions



How do I know my property is suitable?

Most properties built before 1920s have solid walls. With solid wall properties there is no cavity to fill hence externally insulating is often the most cost effective home efficiency improvement.

cavity walls
2-3 weeks

How long will it take to install?

EWI usually takes an average of 2 - 3 weeks from assembly to dismantle of scaffolding. As with most building works the installation can be weather dependent.

How much disruption should I expect?

All work is undertaken outside of your property. Whilst work is ongoing, disruption will be kept to a minimum.

disruption will be kept to a minimum
up to 60 years

How long does external wall insulation last?

EWI has a life expectancy of up to 60 years.

What will I need to do before work commences?

There is no need to vacate your property and your installer will take care of everything, including:

  • Any gates will be temporarily dismantled.
  • Satellite dish removed and fixed to scaffolding.
  • Flues and overflow pipe will be extended to accommodate the installation.
  • Down/ soil pipes will be adjusted to suit.
  • Any plants will be removed from the wall surface.
my home is damp

My home is damp, does external insulation help with this?

The primary cause of damp within any home is condensation. Condensation forms when moisture laden air comes into contact with a cold outer wall. External wall insulation creates warm interior walls and prevents the phenomenon from happening. The result is a warm, comfortable and healthy home.

Will I need to paint the outside of my home in future?

Modern technology external wall insulation has revolutionised the need for exterior painting. Using “next generation” self cleaning finishes, the exterior of your home stays clean and vibrant for many years without any need for painting or maintenance.

disruption will be kept to a minimum
simply warmth

simply warmth

Your boiler accounts for up to 70% of what you spend on energy every year. This means replacing your old, inefficient boiler for a modern ‘A’ rated boiler can save up to £490 per year on running costs!

simply insulate

simply insulate

Around a third of all heat lost in a solid wall or non-traditional property is lost through the walls. In such properties cavity wall insulation is not possible so externally insulating is often the best option.

simply renewables

simply renewables

There has never been a better time for homeowners to invest in renewable energy and in particular Solar PV. Not only do homeowners benefit from free, self-generated electricity but any surplus is sold back to the National grid and you get paid for it via the Feed-in Tariff.

Simply survey

simply survey

RES offer impartial energy advice using out experienced and knowledgeable survey and assessment team, all of whom have a wealth of industry experience including external wall insulation, cavity and loft insulation and renewable technologies.

Simply Fix

simply fix

Gone are the days of costly and time consuming timber pattress fittings, an element of the install which can cause time delays and potential install problems. With Simply Fix you can “simply fix” our fittings directly into existing insulation.