Easy-fit letter box draught excluder

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The EcoFlap blog: news and views on draught-proofing and energy saving.

Retrofitting historic houses for energy efficiency

retrofittingRetrofitting historic houses for energy efficiency

Historic houses (ie anything pre-1919) come in all shapes and sizes and between them present every imaginable energy efficiency problem. Retrofitting historic houses is a particular interest of ours, with a plan in the pipeline for one particularly keen colleague to study for a PhD in retrofitting historic houses to high standards of airtightness.

Historic houses are unpredictable

The first problem anyone will encounter in attempting to issue advice for making historic houses less leaky, easier to heat and overall more energy efficient is that the permutation of building styles, phases and materials over the years is completely unpredictable. Two Victorian tenements or two Georgian mansions or two pre-WWI council houses can have been built to different standards with different raw materials, different insulation (if any), been subject to different environmental factors and lived in by a succession of families with very different approaches to maintaining the fabric of their houses. Then there are the buildings never intended to be lived in but which have been converted for habitation – barns, dairies, schools and churches, to name a few.

These buildings will come with intrinsically different systems (if any) for providing heating and hot water, whether original or added later; any work done to a house will leave a different footprint behind. The window size and type will differ from one type of house to another, the neighbouring houses will differ, the type of roof will differ, previous damp-proofing and fire-proofing works will differ. Nothing can be taken for granted.

General advice or EnerPHit?

This unpredictability means that unless you’re in a position to commission a private energy assessment of your historic home and carry out the recommended works (eg EnerPHit, the passivhaus-type standard applied to existing builds, less rigorous than passivhaus but still a technical and demanding standard to meet), advice has to stay very general. Where the suggestions will do no damage to the historically significant elements of a building, respect its construction and behaviour, won’t cause problems of their own (the classic one being window sealing or wall cladding that then leads to a damp build-up) and are reversible, they will have some merit. Many of these measures come down to common sense and are just as applicable to modern housing as historic. Ensure the fabric of your building is properly maintained (no treatable cracks, badly-fitting doors); identify draughts and neutralize them effectively (eg an EcoFlap on your letterbox, a curtain over your front door); lag pipes; lay loft insulation; switch to low-energy fixtures and fittings etc etc.

But do no evil. A historic house has something all its own. It’s not reasonable to consume the planet to run it and those who choose these houses (not everyone does, if they’re reliant on allocated housing) must accept that they can’t, without a limitless budget and sometimes even then, run at passivhaus standards of energy efficiency and airtightness, but still a great deal can be achieved and big improvements made.

Energy saving for business

Black EcoFlapEnergy saving for business

Saving energy and keeping bills down (sometimes these have separate motivations, sometimes the same one, depending on how green your outlook) are issues faced by both businesses and households, and there’s not one simple fix.

How any one place achieves reductions depends on a number of things – the type of home you live in or the sort of building a business operates from, how many people are in the building, what times of day the buildings is active, whether you’re on a windy hillside, mid-terrace or seven floors up etc etc.

Take control of your energy costs

Some things are applicable to everyone though. We’ve just read an article from GreenWise (now no longer available online), primarily aimed at energy saving for business, and we were genuinely shocked to read point no 3:

3. Take control
Review your utility prices on an annual basis. Barely 15 per cent of small businesses know what rate they are paying for electricity

This applies to households just as well (and goes beyond energy tariffs) and is a vital piece of the jigsaw. It can be tempting to switch the lights off, turn down the thermostat, fit an Ecoflap and not look too closely at the fine detail of energy prices, but to find the most cost-effective solution for the fuel you will inevitably use this information is a must-have.

Draughtproof the building

The GreenWise article is a brief, bulleted run-down of the issues around energy saving for business, but most of them apply to households too. It boils down to having proper information, taking opportunities to change to better tariffs, shopping around and asking for expert help if need be.

Just as all the energy use monitoring in the world and clever thermostatic control mechanisms won’t in themselves do anything to stop draughts whistling in through your letterbox and around badly-fitting windows, neither will simply knowing how much you pay for energy. Ensure that your premises is as leak-proof as possible, then apply the other measures to make sure the energy you do use and pay for is kept to a minimum, its effectiveness is maximized and its price is as low as you can negotiate.

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SuperHomes September 2014 Open Days

Historic doorSuperHomes 2014 focuses on historic buildings

We’ve just been reading about the 2014 SuperHomes Open Days and were particularly thrilled to note the focus on historic properties this year.

Plenty of savvy householders retrofit energy efficiency measures on their properties, but there is an almost unspoken feeling that that kind of modification will wreck the integrity of an historic building. Can you imagine solar panels on the roof of a Tudor cottage or a wind turbine spinning away atop the Georgian rectory? In many ways why not? These buildings have – in some cases quite miraculously – survived into an age where such features are commonplace and that alone is part of their story and lifecycle, but planning law and considerations of visual appeal mean that energy efficiency can be considered inappropriate to old buildings and undertaken by stealth, where it’s undertaken at all. This is the ultimate irony as the majority of UK housing stock dates from a time when technologies were different, energy sources no cause for concern and cold and draughts a fact of life, so if any houses need work, it’s these ones.

Retrofit in historic buildings

It’s clear though from this SuperHomes article that retrofit energy efficiency work on historic buildings can be tremendously effective while doing nothing to detract from the building’s appeal and charm. The article lists numerous methods of saving and creating energy put in place in properties as special as a 1909 Arts & Crafts house but also as commonplace as a 1920s terraced house. The statistics for the levels of comfort in these houses are impressive as is the hard work and dedication of the homeowners involved. Although energy bill savings are in many cases achieved, this isn’t necessarily the top consideration.

Visit a SuperHome near you

This month there are 60 SuperHomes open to the public. To find one search the map on this page and see for yourself just what’s possible with an older house. Enjoy the character and architectural features of an older home without draughts whistling round your ankles or a five minute wait for hot water, and learn from the householders how to make historic properties sustainable to heat and to power. We have a couple of Ecoflaps to give away in return for a photo of a SuperHome with an Ecoflap in place!

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Zero Waste Week

Zero Waste Week

Have you heard of Zero Waste Week? This Guardian article gives you the background to what started out as a personal challenge on the back of the 2004 Boscastle flooding disaster but has become an annual phenomenon.

One More Thing

It’s an interesting article including some pretty shocking statistics on how we consume (eg “only 1% of the items we buy are still in use six months after they are bought“, the kind of figure that had us reviewing what we’d bought lately), but this bit jumped out at me:

After all, it has much more impact if every household and business reduces their waste by a tenth than one household who go to the nth degree.

This underpins Zero Waste Week’s 2014 challenge: One More Thing. Households and businesses pledge to do one more thing to reduce waste. This is a very important issue and echoes one of our principles which is that doing something rather than everything *is* okay. It’s a massively tall order for the average household or business to eradicate waste and consume only from sustainable sources, and most will be put off doing much at all if the message is put out there that it’s all or nothing. We know there are some amazingly driven and energetic people who do manage to achieve “the nth degree”, but most of us feel inadequate in the face of that and tempted to give up on the whole business.

It’s enormously important that we support households and businesses for what they do, not castigate them for what they don’t do.

Fit and Forget

I read elsewhere today that ‘fit and forget’ is the way forward for energy saving – hear hear. Reducing consumption of all types shouldn’t/doesn’t have to be a hair shirt crusade. It’s quite possible to fit all sorts of measures to your home to reduce energy consumption with no drop in comfort levels, just as it’s possible to reduce your food bill and increase sustainability with a little bit of planning and no deprivation.

Retrofit an EcoFlapYour One More Thing could be fitting an Ecoflap. It will cost you under £30, can be fitted in just a few minutes, and will work 24 hours a day to prevent draughts coming in through your letter box and bringing your hall temperature down. Your home will stay warmer and your thermostat won’t be convinced the house is colder than it really is and prompt the boiler to fire up.

You’ll save money, keep warm and forget all about your Ecoflap.

You’ll also be fulfilling the Zero Waste Week 2014 pledge, and that has to be worth a few minutes of anyone’s time.

Update: This now offline House Association Building and Maintenance article on Bicester’s new eco town makes some very good points about building in such a way that tenants don’t need to change their behaviour or learn how to use new devices, but will still get the benefits and be happy in their new houses.

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Is retrofit behind record Ecoflap sales?

Retrofit an EcoFlap

Retrofit upir door with an Ecoflap quickly and easily

Best ever Ecoflap summer sales

We’re delighted to report that Ecoflap is experiencing its best ever summer sales this year. We’d love to think that this is because people are heeding the retrofit message. Ecoflaps are so quick and easy to fit to any horizontal letterbox and cost a fraction of the big retrofit energy efficiency measures such as cavity wall insulation and new windows while making a big impact.

Icing on the cake

For those households that are undertaking major energy efficiency works such as a new boiler, an Ecoflap is the icing on the cake. Cold air can sneak in to a house in all sorts of places, but the hallway is a special case:

If you have a thermostat, chances are it’s in the hallway, and if you have a letterbox, chances are it will open into your hallway. Thermostats control boilers and unprotected letterboxes let in draughts, so a draught whistling in through the letterbox will lead the thermostat to believe that the house is chillier than it may really be.

Why heat up cold air?

The simple solution is to keep that cold air out in the first place and stop the boiler constantly having to warm up cold air. A retrofit Ecoflap keeps cold air out by shutting completely and to passivhaus standards. In windy conditions it  will only ever blow more firmly shut. Ecoflaps don’t rattle, yet open very easily for post to come through.

Ecoflap is a complementary measure

We think an essential component of retrofit advice is that energy efficient home appliances and smart thermostats in themselves do nothing to prevent cold blasts sneaking in. Seal those leaky spots and you will inevitably use less energy heating your house. Complement that with new boilers and smart thermostats and you’re well positioned to get the upper hand over that energy bill.

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