Passivhaus Consultant and Designer.  Very Low Energy Buildings.  Domestic and non-domestic.  New build and refurbishment. 

07502 425158
piers@piers-sadler.co.uk

Bristol, UK

News

Friday
Nov112016

Another Listed Building needing an Energy Upgrade

This Grade II Listed former textiles mill is undergoing a change of use to residential use with groundfloor office space.  We are working with Greenheart Sustainable Construction to develop the detailed plans for the conversion, making the building energy efficient and comfortable to live in, whilst being sensitive to the buildings heritage.  

Insulating old solid walled buildings needs to be done with care and a whole house approach will be taken to include insulation, wiondow upgrades, airithghtness, ventilation, heating and hot water.  

The fundamental strategy is to select appropriate, mainly natural, building materials and get the ventilation and vapour control right.

 

Thursday
Oct062016

Grade II* Listed Building Refurbishment

We have recently been appointed to advise on servcies and roof insulation for this Grade II* Listed house.

The heritage value of the building dictates most of the works with restoration as the main driver.  The focus for energy efficiency is on insulating the roof and providing energy efficient heating and hot water.

We are advising on design and procurement of a 50kW water source heat pump with oil backup for heating and hot water.  

 

 

The geometry of the roof, combined with the historic structure makes insulating the roof effectively without risking damage highly challenging.  

 

 

 

Wednesday
Jul132016

Three rules to make Passivhaus much easier

My July blog for the Green Register explains how to make it much easier (and cheaper) to build a Passivhaus.  These rules aim to guide designers and clients on key features from the outset.  If you don't take note of these riules you probably won't end up with a Passivhaus and your house will be much less energy efficient than you probably hoped.

 

Monday
May092016

New 26 Unit Passivhaus Development in Bristol

Piers has been appointed as Passivhaus Consultant on a scheme to build 26 Passivhaus dwellings on the site of the former bingo hall in North Street, Bristol.  The project team for the development, known as Picture House Court is as follows:

Developer - North Street Investments

Architect - Origin 3 Studio

Passivhaus Consultant - Piers Sadler Consulting

Passivhaus Certifier - BRE Certification

Structural Engineer - Hydrock

M&E Engineer - Hydrock

Project Manager - Aecom

Main Contractor - Speller Metcalfe

 

Construction work started on site in 2013, but was stopped whilst a new team was appointed for the project. Work is about to start on site agin, and whilst Passivhaus work was done before the original start on site with Origin 3 working with BRE, there is still a lot to be done to confirm the suitability of the designs and performance through PHPP.  

These are relatively complex buildings, so there is a lot of work going into thermal bridge free and airtight design.  Airtightness is clearly going to be the key challenge.  To get up to speed with the project quickly and aid the smooth running of the Passivhaus consultancy Piers was co-located with Origin 3 Studio for about 6 weeks at the start of the work.

 

 

 

 

Wednesday
Jan062016

Room in Roof Insulation - a risky business

The complex geometry and construction of room-in-roof settings, especially in older houses, makes them very difficult to insulate with appropriate vapour control and without risking interstitial condensation and potential building damage.  

 

Similar issues in relation to solid wall insulation are well documented and solutions presented in the excellent new 'A Bristolian's guide to Solid Wall Insulation'.

Piers has been grappling with this on a number of projects and produced a blog post for the Green Register describing the problem and recommending an approach that addresses most of the issues.