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Arboreal Architecture

Arboreal Architecture

London

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Arboreal Architecture - Clapham Retrofit

Arboreal Architecture

This project is a “deep-retrofit” of a 170-year old grade II listed Victorian townhouse. It is the first listed building in England to meet the AECB Silver Performance Standard and in June 2014 the project was announced as finalist in the AJ Retrofit Awards.

 



 



 



 



 



 



 



Clapham Retrofit

Clapham Retrofit 



This project is a “deep-retrofit” of a 170-year old grade II listed Victorian townhouse. It is the first listed building in England to meet the AECB Silver Performance Standard and in June 2014 the project was announced as finalist in the AJ Retrofit Awards.

Using Passivhaus methodology, the estimated Space Heat Demand of the 170sqm building has been reduced by over 75% from 180kWh/m2/yr (5,631 kgCO2e) to 40kWh/m2/yr (1,251 kgCO2e) and the air leakage reduced from 9.6ach to 1.8ach.

The solid brick building has been internally retrofitted with over 9 types of insulation material, each a bespoke solution to localised performance requirements respecting the historic significance of the existing fabric. The existing sash windows and doors have been upgraded through the installation of double-glazed secondary glazing. High performance insulation materials together with careful airtightness and thermal bridge detailing have resulted in a historic building that is both highly energy efficient and more comfortable to live in.

Prior to the application of internal insulation, wireless sensors (connected to an internet gateway) were installed into the walls of the building. The monitoring of the building fabric moisture is on-going and at the 18th International Passivhaus Conference in April 2014, Harry Paticas delivered a paper summarising the results.