Monday, 13 March 2017

Hennerwood passivhaus drone footage

Whilst erecting our Hennerwood farm passivhaus project we produced drone footage of the timber frame. Please take a look at the footage of this stunning building in the Herefordshire countryside!





Monday, 6 February 2017

Chief's Farm Cottage Passivhaus

We have just finished the erection of our Chief's Farm Cottage project in Essex. For this project Touchwood designed and installed the strip foundation with our special thermally bridge free detail, to create a very thermally efficient slab suitable for passivhaus. The image below shows the 300mm EPS insulation installed:


Following the powerfloat finished concrete slab on top of the EPS, we then installed the pre-cut timber frame, with our robust air tight board installed over the external surface. Unusually, this build has the airtight layer going under the roof structure, rather than having the roof warm side - our usual approach. This improved the surface area to volume ratio for passivhaus PHPP analysis, and avoids the client heating space that is not used - they didn't require vaulted ceilings in the upstairs rooms. See below some images of the timber frame:



We are now commencing install of the MVHR duct work, simply installed in the-cut holes, prior to hand over to the clients tradesman for the follow on works.

See below an image of the pre-cut duct routes in the frame. The MVHR system is modelled for acoustic performance, with silencers in the network as necessary. This unique integrated approach to MVHR and frame design allows all ducts to be within the floor cassette, where they do not need boxing out, and will have the space around them filled with Warmcel, creating near silent running,


We look forward to the project being finished and being added to our list of passivhaus certified homes.


Thursday, 20 October 2016

Tatsfield dramatic modern flat roof home complete

Towards the end of September we completed the frame erection work on our Tatsfield project in Surrey, which is a modern flat roof home constructed on a dramatic sloping site, see below an architect rendering of the finished scheme;

 

We successfully designed out all steel in the structure, to minimise the cold bridging. Instead we utilised complex box beams, and extensive glulam beams, which in the large open plan upstairs area form a striking visual feature in the home.

We look forward to the scaffold being removed so that we can obtain some photos of this project which we are particularly proud of, in the mean time here are some drone images from the frame erection works.




Monday, 12 September 2016

Another Touchwood house achieves Passivhaus certification!

Our client's on our Porters project, which we completed 3 years ago recently decided to put the house through the Passivhaus certification process to formalise the performance of their home. The house was modelled with PHPP early on, but during the build the clients were focused on managing the build, so decided to leave the certification process till later.

We have a number of projects where clients take this approach - holding back on the formal certification (but recording evidence during the build) so that all their energies are on organising the self build tradesman and the like.

Porters build cost was just over £1000/m2, for a home that has a negative heating bill, this is a great example showing that passivhaus is affordable, it is mainly just a different approach to the build.




Thursday, 30 June 2016

Passivhaus mentioned on Robert Llewellyn's Fully Charged!

The latest Fully Charged episode features passivhaus and low energy new builds - Robert Llewellyn explains them and the politics behind the lack of large uptake in the UK. No reason to not build one yourself though, get in touch, we have built many!




Friday, 27 May 2016

Interview with Lisa Jackson regarding her Touchwood Homes built passivhaus home

Ben Adam-Smith recently visited our Fox Barn passivhaus project in Hampshire (which we erected 2012) to talk through the build with the owner, Lisa Jackson.


Lisa explains the build process in detail along with the some useful advice regarding planning. She also explains our airtight frame construction, general advice regarding managing a self build and how comfortable living in a passivhaus is. Please visit Ben Adam-Smith's site to read / hear the blog:

http://www.houseplanninghelp.com/hph130-a-passivhaus-barn-that-embraces-contextual-design-with-lisa-jackson/




Thursday, 14 April 2016

Curved wall home in Chesham

We are currently erecting our Chesham project, a new home featuring subtly curving external walls, and curving ridge beams.Curved walls and beams are no problem for our bespoke pre-cut system, any design is possible!
The curved external walls create a very complex floor cassette, which also has to incorporate the ducts for the Touchwood designed PAUL MVHR system. This complexity is achievable without problems though with our machine pre-cut frame system, the image below shows the floor cassette:


To match the external walls being curved, the design also requires curved glulam ridge beams so that the rafters end up the same length. The curved ridge beams are now installed, ready for rafters to be slotted in, the image below shows the curved ridge beams:


We enjoy the challenge working on these exciting cutting edge curved wall buildings!