pic

Highbury

Passive House Principles 3 Storey Side Extension with Compact Unit

Design:

Ian Taylor

Contract Value:

Circa £300k

The client who is also the architect was looking to build a Passive House quality side extension to his home and contacted us directly due to our experience in this field. Due to an unfavourable form factor  – the ratio of building volume to surface area – resulting from site constraints, Passive House could not be achieved however we endeavoured to get as close as possible using Passive House design principles.

We achieved this by building a timber frame structure heavily insulated with rigid board and expanding foam with a brick exterior to meet planning requirements. We fitted high performance windows and a Nilan combined MVHR unit and domestic hot water system. We provided full mechanical, electrical and insulation design and installation. Due to very low heating demands and project cost restrictions we used underfloor electric heating mats throughout.

The extension consists of two bedrooms, two bathrooms, a snug and a kitchen diner. The small building width was very restrictive, there was pressure to retain and maximise internal space, storage potential and to utilise every recess. This resulted in curved walls to increase the feeling of space.

A Loxone smart home system controls heating, MVHR system, & light switches. It was designed with a future provision for control of electric blinds.

  • "We’re really lucky to have them Bow Tie Construction working on our project. Thanks for all your fantastic work so far."
    — Nick H
  • "Passing our air test the first time is testament to how well Bow Tie do things"
    — Justin Bere
  • "Bow Tie are meticulous in how they do things"
    — Justin Bere
  • "I’ve been very pleased with how Bow Tie have got on with the work."
    — Justin Bere
  • "My projects with Bow Tie are the only ones where I’ve left the contractor to follow my airtightness details and the projects have passed the 1st airtightness test."
    — Justin Bere

Interested in working with us?

Let’s get in touch


Share this project:
Share on Pinterest
Related projects
All Projects