4 Coronotation Road, Kington - almost Enerphit retrofit in progress - 8th, 9th, 16th & 22nd November

Jim welcomes you to his 1953 detached bungalow with cavity walls and a slate roof, retrofitted to AECB Carbon Light Retrofit standard (almost “Enerphit”). It has been rebuilt with a new first floor to the main part and a more affordable upgrade to an attached studio part. It's at first-fix stage so lots of details that you can still see! 

Modifications:

• External wall insulation and internal wall insulation
• “ Warmcel”roof insulation
• Triple glazed  
• Solar panels - both integrated and surface mounted
• ASHP
• Detailed air tightness
• MVHR (mechanical ventilation with heat recovery)
• Rain water recycling
• Roof slates made of 90% recycled polypropylene
• Air test results: 0.8 air changes per hour @ 50 Pascals. 

Motivation to retrofit:

We want to live with minimal impact. We built to passive house standard before and found it just so comfortable and pleasant. Future proof low cost living.  

Approximate cost: 

Main part, quite a bit more than standard build. The lower upgrade part, quite affordable. I will have some figures soon, work is on going at present.

Who did the work?

Direct labour and various sub contractors.

Approximate energy savings:

Still building but anticipate a max of 2.75kw heating at -5 outside and 21 degrees internally. 

Benefits:

Not lived in yet but from past experiences it will be very comfortable and low cost living.

Next steps:

Maybe build a conservatory’ sun room.