Tag: bungalow

  • HPH131 : Building a home in your garden for your retirement  – with Robert Young

    HPH131 : Building a home in your garden for your retirement – with Robert Young

    Robert Young explains why he decided to build a home for his retirement at the end of the garden and what steps were necessary to create this low maintenance, high comfort dwelling.

    Robert-Young

     

    Interview with Robert Young

    Robert and his family lived in a large Victorian house, which was originally the infirmary for Swaffham’s workhouse. After 30 years there and with his children having left home, he and his wife Jane finally decided they needed to downsize to a property that be cheaper and easier to run, and offer them a high level of comfort.

    As the Victorian house had a generous garden, they realised that could easily build a new home within it without diminishing the nature of the existing property.

    Robert has always thought that it’s sensible to do things before you have to and so they wanted to prepare for a time when they may not be as mobile.

     

    Building to Passivhaus standard was a goal from the outset

    Although the idea of building a house was incubating in their minds it was only after Robert attended a talk at his local rotary club that he gained a clear direction. The theme was domestic architecture and looked at past vernacular as well as future developments. Chris Parsons from Parsons + Whittley spoke of a Passivhaus future where buildings were constructed with much more attention to detail. Some of the benefits included lower heating bills and higher levels of comfort, which immediately appealed to Robert.

    As part of their research they went to visit Denby Dale Passivhaus and they were impressed.

    Robert's-plot

    A dendrologist assessed the impact of a mature tree on the plot

    Their new home – with a floor area of 110m2 – would sit on a plot of 500m2 but it would have to be shared with a mature lime tree that had a Tree Preservation Order on it.

    A dendrologist plotted all the trees in the area and was confident they could build several metres away for the giant lime. The pile foundations and concrete raft would also protect them from any root growth, although this was thought to be minimal.

    pile-and-raft-foundation

    Give your architect the freedom to do a good job

    Robert and Jane’s original brief was simple. They wanted a two bedroom bungalow with en suite facilities, a living room and an open plan kitchen diner.

    Other than that they were prepared to trust their architect Chris to come up with the best design possible. They were in no way prescriptive.

     

    The design of their home embraced their biggest constraint

    With the lime tree a dominant feature on the plot, the house wraps itself in a curve around it.

    Most rooms look towards the tree, except for the living room which gazes back at their old Victorian home.

    The tree also provides shade in the summer which reduces the chances of overheating in the Passivhaus.

     

    The winning contractor was keen to do Passivhaus

    The specification went out to five local builders, but the winning contractor showed a strong desire to do a good job.

    Although they hadn’t built to Passivhaus standard before they put their entire team through the Certified Passive House Tradesperson Course from the Passivhaus Trust.

    Robert believes that having the same team on site the whole way through, rather than subcontractors, was a huge benefit.

     

    A covenant was added to the deeds of their old house

    Robert and Jane sold their home before the build began and rented a cottage in a nearby village.

    They did update the deeds of their old home to include a covenant that stated that a two storey building could not be erected in front of their fence, which would block out the sunlight.

    curved-brick-walls

    The builders plotted the curve using GPS

    Lime Tree Passivhaus is a cavity wall construction.

    When the bricklayers were creating the curve they plotted it using GPS facilities, breaking down the units into ever smaller and smaller sections, so that no more than two or three bricks were laid before they took another check on the alignment of the curve.

    The build took just 8 months to complete, which was exactly on schedule.

     

    Decisions were often made on a financial basis

    As with any build they had to stick to a budget and Robert says that was one of the trickiest parts.

    Not everything could be top of the range so they had to think carefully where they wanted to spend their money and make some compromises.

     

    Swapping an old house for a new house was not difficult!

    After 30 years in his old Victorian home, Robert anticipated it might be difficult to move . . . but he says personally it wasn’t and it was time to go.

    “We’re very comfortable in the house. It meets all the requirements that we have and there were no exaggerated claims about the comfort of a Passivhaus so we’re very happy.”

     

    Lime-tree-passivhaus

    The UK Passivhaus Awards

    This year the UK Passivhaus Awards is focusing on self builds so it’s right up our street! Take a look at the projects that have made the shortlist.

     

    Transcript

    Download a transcript of the interview with Robert Young.

     

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  • Why It’s So Hard to Find Land to Build a House On

    Why It’s So Hard to Find Land to Build a House On

    Ben discusses the frustrating reality of watching developers build thousands of uninspiring houses in his home town, while he struggles to find a single suitable plot on which to build his dream home.

     

    If you’re building a house in the Outer Hebrides, then you’re probably spoilt for choice when it comes to plots of land. But if, like me, you’re hunting for land in a place of greater demand, the job becomes much more challenging.

    (more…)

  • HPH078 : Externally Insulating a Bungalow with Straw Bales – with John Butler

    HPH078 : Externally Insulating a Bungalow with Straw Bales – with John Butler

    John Butler tells the story of how he retrofitted a bungalow to be more energy efficient. Having carried out a lot of the work himself, he also shares what he’s learnt about airtightness and overheating.

    John-Butler

     

    Interview with John Butler

    Although it had been John and Anna’s dream to build their own house, they found themselves muscled out of the local market for plots by builders.

    John had attended a straw bale building course and was struck by some of the slides which showed a bungalow in the Czech Republic which had been wrapped in straw bales on the outside. With plenty of bungalows in the local area with poor energy efficiency their focus shifted away from the idea of building from scratch and instead towards searching for a property to retrofit and extend.

     

    Straw was Always Part of the Plan, Whether for a New Build or a Retrofit

    Having been on straw bale building courses and volunteering on builds, John felt that straw was a fun material and enjoyed the atmosphere on site from the types of people it also attracted. The more involved he got the more he realised its sustainability potential; being well insulating, breathable, accessible and a waste product from agriculture.

    insulating-with-straw-bales

     

    Gaps Need to be Eliminated Between the Bales and the Original Walls When Wrapping the Building Externally

    Firstly the walls were levelled with clay to ensure no rodents or insects were able to crawl through the channels. Gaps would also potentially allow air flows which would bypass the insulation. Once the walls were level they were able to create a firm connection for clamping the bales onto.

     

    Foundations Were Needed for the Bale Walls

    As John was trying to avoid using concrete foundations they dug down and used gravel, compacting a layer, before adding further layers by the same method and finally finishing up with a strip of limecrete. The bales themselves were elevated from the ground by an insulated plinth brick wall to ensure that any moisture or leaks would run through the bales and drain out through the foundations.

     

    Airtightness Should be Planned From the Beginning

    Unfortunately airtightness was something John only became aware of later in his project! He discovered the importance of airtightness for energy efficiency through following others on social media, and then tried to incorporate it into the build. It was easier to do this in the extension, but in the bungalow they also managed to use tapes around the windows and are hoping that the plaster skim will keep it airtight. An air test they carried out before completing the finishes showed the weak areas and where they needed to go back and make adjustments.

    John admits that with hindsight he would have planned better and carried out more research before starting, to ensure he had a really good airtightness system. He notes though that he would be interested in finding out about the sustainability credentials of the tapes and membranes themselves.

    bungalow-and-extension

     

    Initial Plans Were Designed and Drawn in Sketchup

    Once John and Anna had thought about the spaces they were looking for in their new home, John drew their ideas in Sketchup before sending them to their consultant in the Czech Republic for suggestions.

    vaulted-ceiling-in-bungalow

     

    A Vaulted Ceiling in the Living Area Helped Compensate for the Loss of Height From Insulating the Original Floor Slab

    One option would have been to excavate the original concrete slab, however with the waste materials being sent to landfill and the risks of excavating within an existing building, it probably would have been wise to have knocked the bungalow down.

    Instead, the chosen option was to use wood fibre insulation boards on top. This does mean however that they’ve not managed to get enough insulation in the floor, without digging the concrete slab out, for it to reach Passivhaus standard.

    sedum-roof-of-extension

     

    Solar Tubes and Roof Lights Provide Welcome Additional Light, But Have Their Drawbacks

    The solar tubes have been effective in providing additional light without structurally taking up much roof space. In summer however, they have found that the direct sunlight beaming through their various roof lights has resulted in overheating of the spaces. This is something they had prepared for on the living room’s two large roof lights and installed external shading, however this does mean that using the shutters blocks the light from coming in.

    Again, with hindsight John would have planned for this and used the PHPP (Passive House Planning Package). It is an annoyance for John that they had planned for saving energy and not being cold in the winter, but now have the opposite problem of overheating in the summer.

    bungalow-from-front

     

    Self Building Has Been Satisfying But Draining

    While John finds it very satisfying to point at the work he has done himself, he readily admits that it has also been all encompassing and draining. He recommends having people to help out at least with elements of the build to provide stimulation and motivation.

    He sees self building as a balancing act, of paying people to do the labour meaning you could get back to work earlier, against the potential financial savings and satisfaction of doing the work himself.

    The result is a house where he and Anna are enjoying their new light, warm and comfortable spaces.

    self-build-selfie-john-and-anna

     

    Find Out More

    Visit John Butler’s blog on his self build

    Follow John Butler on Twitter

     

    Transcript

    Download a transcript of the interview with John Butler.

     

    The Future of Housing – Premiere!

    The date is set for the first screening of our documentary The Future of Housing – And How Airtightness Can Help.

    This project was crowdfunded on kickstarter earlier in the year and on Thursday 4th December 2014 you can see what we’ve been up to!

    The venue will be the Mildmay Community Centre, which was the UK’s first non-domestic retrofit to the Passivhaus standard. So there’s a building to check out too!

    We hope you are able to join us for what will be a special evening. Capacity is limited, so get your ticket now.

     

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