- The house was fitted with 10cm thick EPS insulating board.
- It was finished with a coloured silicate render - ensuring a long maintenance free lifespan.
- The job was funded in conjunction with the £6,000 GDHIF grant, so the final cost to the customer just £2,000.
Mr Mincher benefitted from the Government Green Deal Home Improvement Fund Grant, providing £6,000 towards the total cost of the works.
The house in Greenwich was insulated with 10cm thick EPS insulation boards and then rendered with a silicate render. The External Wall Insulation (EWI) system used was the Kreisel System, which is an approved Green Deal system.
Adding the 10cm of insulation to the walls resulted in a u-value of 0.27W/m2k, which is comparable with brand new cavity walls built today.
It is estimated that this will save Mr Mincher over £180 a year (and it is worth noting that he is a low energy user) without taking into account any future energy price rises despite the fact in cash terms energy prices have doubled over the last 7 years.
In the following photos, you can see the transformation of the property over the course of the week.
Pre Install
I would like to say that six months on, the installation has made a dramatic difference to our property. I would say gas consumption is 40-50% reduced and heat retention is really quite staggering. Even my wife agrees and seldom turns on the heating during the day even in December/
Well after the two years since installation, the EWI (shown here) is still performing brilliantly. Outside it is 31C and inside today we are a nice 23C in the middle of the house and no need for extra cooling. Why people pay for re-rendering of the house and not install EWI is beyond me as the cost difference must not be that great.
This is good to hear as we are planning to have EWI on our house. Only slight concern is potential damp due to reduced ventilation (moisture unable travel out of walls). Any issues around this for you?
Hi Paul. I’m not sure how old the comment is but I have a question. How did the fitters manage around your window sills. Presumably some of you window sills were not deep enough to accommodate 10cm of insulation – did you have to replace your sills?
Did they insulate the small part of brick work that butts up against the window frame? If not I would have thought this would create a major cold bridge?
Also – which installer did you use?
Cheers, Ian
Thanks for your feedback Paul – we are glad the external wall insulation is still working for you! Hopefully it will continue to do so for many years to come! I just had the back of my property done and I know understand what you are saying though. The solid wall insulation makes a massive difference even in the summer keeping the house nice and cool!
Hello. I have a green homes grant in place and agreed but can’t find anyone to do the work. Is this something you would do? Or do you know anyone who could? Thank you.