But first, it's time to announce the two strawbale building courses we're planning to run to build the loadbearing extension and the bungalow wrap. Probably both courses will do a bit of both to give the broadest possible experience. The instructor will be Kuba Wihan, the excellent strawbale building designer and consultant. The lovely folk at Straw Works (which Kuba has close ties to) will be handling the admin for the course, so please contact them (firstname.lastname@example.org) for full information and to book. There is more info about Straw Works and their other current projects on their facebook page, and the courses are listed there under 'events'.
The dates for our courses are July 25th - 29th 2012, August 1st - 5th 2012. The cost will be £325 for 5 day course, including a vegetarian lunch. We hope to be able to include an evening meal in the price (though the course info currently says this will be extra) but can't promise anything yet. There are many local campsites and B&Bs, and the sea is about 2 miles away.
Here's the blurb from the course flier:
During those two five day workshops, we will be upgrading an existing bungalow in Bridport to meet very low energy building standards, while using natural materials. This is a unique opportunity to take part in wrapping an existing bungalow externally with strawbales and simultaneously building a load bearing strawbale extension. The newly wrapped bungalow and strawbale extension is going to have solar thermal as well as solar PV panels on the roof, conservatory, rainwater harvesting, mechanical heat recovery ventilation system and Finnish wood burning massoven as a backup for extra cold winters. Anna and John Butler hope to give the 1960s bungalow a new lease of life, aiming for a home that is lovely, comfortable and consumes very little energy, using materials with lowest possible associated pollution and embodied energy. Anna has limited mobility so the completed bungalow will be accessible with level access throughout.
I don't know whether or not anyone in the UK has wrapped a building in strawbales for external insulation before (if you have - or know anyone who has - I would love to know) so this really is a rare chance to get some hands-on experience of doing it. I think it should happen more often! That part of the build is fairly straightforward and will result in a massive improvement of insulation for the bungalow (in conjunction with increased airtightness and loft insulation). Kuba has done this before in the Czech Republic (see Strawbale Wrappaging), so he is the ideal person to be working with on this project.
Meanwhile, preparatory works continue:
|Garage roof removed. Boards saved for later use.|
|More back straining but highly satisfying sledgehammer swinging later...|
|There are lots of reusable bricks here. Some will be used in internal changes to the existing bungalow, the rest will be stored in the garden to build raised beds and paths with later.|
|Demolishing the garage freed up a table and some doorframe timber to make a tool table with. Things are getting more organised!|
|Scaffolding up. It was suggested that I could just use a scaffold tower to strip the roof from but especially after the sunroom roof incident I decided the expense was well worth it for added ease and safety|
|End of Day 1 of roof strip. No bats were found, but the very helpful ecologist from Dorset Ecology helped us stack tiles.|
|Mid morning on Day 2. The tiles to need to be stripped so that the roof timbers are unladen when we make structural changes. The 47 year old felt was shot and disintegrated on touch so that had to come off too.|
|The wall cavity is a hideous place. Anybody identify this spider? One of about 5 different species of large spider found during the course of roof work.|
|Eaves structure detail. A new timber wall plate will shortly be added inside the eaves/above the soffit, which will enable us to compress the strawbale wrap down from it|