NaCSBA member Air Craft Southern has added the innovative Heliomotion system to its suite of heating, cooling and solar solutions. Ideal for any self builder interested in improving sustainability, Heliomotion is a solar power plant for residential and commercial use, that moves to track the position of the sun, thereby maximising efficiency.
Easily installed by DIYers, once in place the configuration follows the sun in two-axes, which means the solar panels can deliver between 30-60% more energy annually, in comparison to a conventional roof-mounted system.
It uses GPS to calculate the sun’s location from its position to maximise the energy produced from solar power. This can be used to power the home, or stored in batteries for later use.
Not every roof is suitable for solar, and Heliomotion is a great solution for those with sufficient outdoor space for this clever alternative to solar generation.
Produced by Bee Solar Tech, tracking systems can increase productivity, meaning that you can secure the same energy output with few panels than a fixed system. Heliomotion won Best Sustainable Technology or Product category in the 2022 Build It Awards.
NaCSBA member Beattie Passive is running a pair of free Passive Haus training events in October to support anyone considering adopting a passive methodology for their new build or retrofit project. One event is curated with self builders in mind and the other is designed to support professionals working in the sector.
Offsite modular specialist Beattie Passive, a member of the Passivhaus Trust, the Association for Environment Conscious Building (AECB) and the Good Homes Alliance, is holding the Passivhaus events at its offsite factory in Norwich.
The sessions offer attendees an insight into the principles of Passivhaus and how the standard can be applied to deliver energy efficient, net zero homes.
The sessions also include a guided tour of Beattie Passive’s 100,000 sq ft housebuilding factory.
This event has been specifically designed for self-builders that are interested in the energy and carbon-saving benefits of Passivhaus.
Attendance is free, but space is strictly limited, so register early to avoid disappointment.
Beattie Passive also has a second event for professionals interested in learning more about passive approaches to building:
This session is designed for local authorities, housing providers, policy makers, architects, builders, developers, and anyone else with an interest in building new net zero homes to Passivhaus standard (or retrofitting their existing housing stock to EnerPHit standard).
Ron Beattie, founder and managing director of Beattie Passive, said: “These events are part of our mission to promote sustainable building practices. Passivhaus has become synonymous with energy efficiency, and for good reason – a Passivhaus needs as little as 10% of the energy required by a conventional UK home – but we shouldn’t overlook the other benefits, such as thermal comfort, noise reduction and air quality.”
“Passivhaus is a panacea for many of the challenges facing the housebuilding sector – it can put an end to fuel poverty, raise living standards and eliminate damp and mould. At our net zero event, we’ll be paying particular attention to the environmental benefits of Passivhaus, and the role the standard plays in the delivery of net zero homes and retrofit projects.”
Government has announced a plan to scrap the stranglehold that nutrient neutrality has had on house building. This saw a complete ban on any new housing in wide areas across England. The announcement is great news for builders, not only self builders but for custom build developers who have been impacted.
Housing Secretary Michael Gove announced a major deregulation of the rules around Nutrient Neutrality which led to 74 councils setting up moratoriums for all new building, following requirements made by Natural England.
Gove commented that cutting the red tape will unblock up to 100,000 stalled homes, which is worth £18 million in activity for the economy.
In the announcement government squarely blames ‘defective’ EU laws for the problem of Nutrient Neutrality, although it was the government quango Natural England that made the requirements that halted building. Most councils enforced a ban in affected areas as not doing so would have left them open to legal challenge.
Nutrient Neutrality refers to run off of excessive nutrients from the land, which pollutes water courses and damages river habitats. But new housing is believed to cause minimal additional run off, with farming and out-of-date water treatment plants being the main forces contributing to pollution.
An amendment to the Levelling Up and Regeneration Bill will bring about the announced change, and building could commence immediately on many sites as a considerable number have planning permission in place.
Housebuilders welcomed the announcement, but environmentalists have criticised government for its stance.
However, government also announced new environmental measures to improve habitats and reduce pollution, including more funding for Natural England’s Nutrient Mitigation Scheme, which offsets any negative impact from house building.
Michael Gove MP said: “We are committed to building the homes this country needs and to enhancing our environment. The way EU rules have been applied has held us back. These changes will provide a multi-billion pound boost for the UK economy and see us build more than 100,000 new homes.
“Protecting the environment is paramount which is why the measures we’re announcing today will allow us to go further to protect and restore our precious waterways whilst still building the much-needed homes this country needs.
“We will work closely with environmental agencies and councils as we deliver these changes.”
Selfbuilders love getting design inspiration and advice, and where better place to start than with the longlist for the RIBA House of the Year 2023?
Each year Grand Designs: House of the Year shares the shortlist and winners on TV in December, but the longlist gives you a look at what’s to come.
RIBA has published its longlist of lustworthy projects on its www.architecture.com site, with the entries making up some of the most breathtaking homes built in the last year. And it’s not all about Grand Design style homes, NaCSBA member Ecomotive’s tiny SNUG home for HomeMade is in the running too. In fact, SNUG started as a competition entry in NaCSBA’s Self Build on a Shoestring, way back in 2015!
You can also find previous winners on the website, including last year’s RIBA House of the Year, the Red House by David Kohn Architects
If you are looking for an architect, RIBA has a Find an Architect service on its website, together with helpful advice on working with an architect and choosing the right one for your project. Anyone building in Scotland will need to visit RIAS, the Royal Incorporation of Architects in Scotland, which has similar resources.
The Building Performance Network (BPN) has published three free modules to support a range of stakeholders, including self builders, to help them get sustainability right. The guides are designed to support stakeholders to understand the gap between planned energy performance and the actual reality of living in the home.
At NaCSBA we know self builders often become semi-professional in the level of knowledge they develop as they pursue their own build. As such, while these guides won’t be relevant for all, there will be many self builders researching sustainability who will find them insightful as they work to create an energy home that performs as well as promised.
BPE refers to the performance of a home and its systems. Understanding around this area can be complicated, drawing on various data sources, but is necessary to support the emergence of more homes better able to reduce their carbon footprint.
The Building Performance Evaluation modules:
The guides , the first three of five, will support your understanding of what it’s like living in buildings where sustainability has been factored in, in comparison to their predicted performance. This in turn will help you when it comes to making decisions about fabric and systems for your own build, helping you to cut through the greenwash.
The new guides are available at the BPN’s Resource Hub, which is sponsored by Ecology Building Society, and are designed to be entry level for those who are new to BPE and want to understand how to avoid building inefficient homes.
Mechanical Ventilation and Heat Recovery (MVHR) systems are a big ticket item that work very well in a self and custom build. This is because they can be designed in at the very earliest stages of your project, to work in conjunction with your building’s fabric.
But what do you need to understand about MVHR to ensure that it’s the right choice for you? NaCSBA member Airflow shared some of its experience with the Self Build Portal, to help you decide if investing in MVHR is the right choice for you.
Our changing climate means that homes in the UK need to not only provide heating requirements but also need to stand up to extreme heat for prolonged periods of time.
MVHR offers your the opportunity to control your internal environment, especially when combined with a fabric-first approach to building. This is because it needs an airtight building envelope to work efficiently, so how you build is as important as the MVHR system itself.
The heat recovery element of MVHR is an extremely energy efficient process, as no heat is lost, so reducing demand. Conversely, in Summer, many systems bypass this exchange process, to bring cool fresh air in from outside and allowing internal heat to be expelled. Be sure to ask when specifying if your system has an automatic bypass, or partial bypass for Spring and Autumn.
Used well this allows some degree of cooling, especially as the MVHR system will remove humid air, which can in itself make you feel warmer. Removing excess humidity is also important to reduce mould build up.
Heat recovery captures and retains heat that would otherwise be lost as it leaves the building. MVHR removes the heat from stale air as it is extracted from the building. This is passed through a heat exchanger that transfers the heat from the outgoing air to fresh air entering the building. Incoming air is filtered to remove impurities, such as allergens, heated and then distributed around the building.
This requires good levels of airtightness in your build envelope to prevent air leakage, as well as ducting and the actual unit where the exchange takes place. MVHR does away with stand alone extraction systems, such as hob and bathrooms extractors.
In regards to cooling Airflow has some useful insight on comparing the two systems.
Primarily, air conditioning will cool more powerfully, but it does this by recirculating the stale air that is already in the room.
Whereas air conditioning is reliant on a unit per room, with associated running costs and local noise, MVHR is a whole house system. This means there is one piece of plant, in the loft or plant room, and ducts in individual rooms, rather than entire units.
As well as fresher air and a quieter system, this can result in lower energy usage, but check if this translates into lower running costs.
MVHR is better at maintaining a constant temperature using fresh air, but is more reliant on external air temperatures to secure this. Therefore regulating the temperature early in the day will result in a cooler building.
A more powerful MVHR system can move larger volumes of air which can help with cooling, so again, speak to your specifier about your expectations for the system.
MVHR needs to considered early on in your plans, and needs to work in harmony with your build model. If you are considering it speak to system manufacturers/installers and do your research in advance.
This can be from neutral sources, such as magazines, as well as supplier websites (although be aware they are promoting MVHR). The Passivhaus Trust and Green Building Store are also good sources of information, and the NSBRC runs several courses on heat and energy.
If you decide it is for you, ensure that your architect and package manufacturer are planning for it from the get go, and that any follow on trades are aware of the need for airtightness. This needs a ‘fabric first’, whole house approach, and this might affect window orientation and shading and solar gain. For example, trickle vents on windows should be avoided, as they will reduce the airtightness.
Images: Airflow
For the third consecutive year the National Self Build and Renovation Centre (NSBRC) is repeating its survey into your experiences around custom and self build.
The anonymous survey is a vital for compiling data on people’s experiences as there remains limited information on activity, and this is key for informing policy and practice moving forwards.
10 minutes of your time can help more people build, as it provides a picture of activity that allows the National Custom and Self Build Association (NaCSBA) to evidence its recommendations to government and industry.
NSBRC Managing Director Harvey Fremlin has recorded a message about the importance of the survey on YouTube.
A large majority of people planning a build have visited the NSBRC in person or attended an online event, and the survey will capture their experiences in the research and delivery of their home.
As a thank you for your time taking the survey, the NSBRC is offering a 10% discount on any of its essential educational courses (valid for 3 months) for every completed survey and the chance to enter a random draw to win one of five £50 John Lewis vouchers.
NaCSBA member Allan Corfield Architects (ACC) recently celebrated reaching its 500th project over 15 years. A stalwart of the self build sector, the practice designs self build homes and extensions, and works to educate the public through its How to Self Build Successfully seminars*.
Based in Scotland ACC also operates out of the National Self Build and Renovation Centre in Swindon, fulfilling self build commissions across England and Scotland.
Many of these are replacement dwellings, offering the residents a modern home that suits their needs. Frequently this includes future proofing to enable residents to stay living in their home should their personal circumstances change.
The next seminar How to Build seminar is on Friday 23 June in Fife followed by Saturday 2 December at the National Self Build and Renovation Centre in Swindon.
The seminars cost £40 per person, and provides a detailed overview of the self build process. This includes finding land, funding the project, the design process, structural considerations, low-energy solutions and consultations.
Velfac’s new website offers a host of features to empower you as you make decisions about the windows and doors on your project, including a visualiser.
When specifying windows and external doors it’s important to be aware of the choices on offer. Not only do these features set off your overall design, but there are material and energy-related decisions that you need to make.
Materials, design and the types of glass and hardware all need to be considered to ensure that not only does your choice look good but that it offers the thermal and acoustic performance and durability that you need.
VELFAC windows and doors have durable external aluminium facing paired with natural, internal timber, and the new inspiration area shares self builders’ experiences and photos of their own projects, showing the products on real projects.
There is also a 3D visualiser to help you refine your window design, as well as advice onthermal performance and daylight optimisation, a vital consideration in today’s energy crisis.
Get in touch today to request a quote, or visit stand 203 at the NSBRC to find out more
When planning a project self builders should adopt a fabric first approach to the construction. Zero carbon homes are at the top of the government agenda, and combined with the energy crisis it’s never been so relevant to build with energy efficient materials.
Fabric first refers to the building fabric that creates the envelope of your built home, including the materials used to create the frames, structure and insulation, and specifically in relation to heat retention.
Choosing high performance materials, such as Structural Insulated Panels (‘SIPs’) means you are building with energy efficiency from the start. All other decision, such as heating and cooling systems, start from this fabric first approach.
A fabric first approach should consider:
Specialists SIPS@Clays, which designs, fabricates and installs the Kingspan TEK® SIPs Building System, shared their insight with the Self Build Portal as to how this approach can make all the difference to the final home, with the example of building with SIPs
Ian Clay of SIPS@Clays explains that as one of the most sustainable methods of construction available, the popularity of SIPs is soaring for environmentally conscious self builders.
These high performance panels are made up of sandwiches of boards bonded together with insulation, with different configurations and thicknesses available for different applications and performance.
The structure can be finished to look like a conventional build, clad in timber, brick slips or render, depending on the customer’s design (as shown in this SIPS@Clay home, clad in sheet metal and burnt larch teamed with render).
The advantage of SIPs is that, because they are structural, they can be used to build the floors, walls and roof. Plus, they have the the added benefit of not needing roof trusses, which maximises usable loft space.
“There are so many benefits of building with SIPs including speed of build, increased living space, flexibility of design, predictable build programme and exceptional versatility. However, amongst the most important are the thermal efficiencies, low energy living and green construction credentials the system provides. This is why SIPs lend themselves so well to the fabric first approach.
“The ‘built in’ thermal properties of SIPs and reduced thermal bridging, the low U-values and the increased airtightness that the system offers, can reduce the amount of energy used to heat or cool a room by up to 50%.
“In most cases it removes the need for additional technologies or conventional heating entirely, relying on the natural efficiency of the fabric of the building. Of course, additional sources of heating or cooling can be included if desired.”
“Add into this, the off-site manufacturing, minimal waste and low environmental impact, SIPs are the perfect construction solution for all self-build projects, including those being built to achieve Passivhaus accreditation.
So, if you’re at the start of your self-build journey and want to build a low or zero carbon home, ensure you adopt a ‘fabric first’ approach from the outset.
