Tag Archives: Energy efficiency

My Shabbihaus eco retrofit project part 4 living wall insulation

Dry air in the house is a good achievement but I have also been worrying about the pollution levels. Two of the three air intakes are located above the back garden and the front one has some good tree coverage between it and the road but it is still a busy traffic area. This made me look at some alternative ways of cleaning the air, I did some googling and came across the NASA research project on houseplants and their impact on air quality. Now before I go any further I do realise that these were controlled tests and we would also need a very large number of plants to get a big impact but I figure it can’t hurt and what I made looks great.

I have been keen to do something with reclaimed wood and also to add some extra insulation to the flank wall in the kids bedroom so I got a bit carried away here and produced this wall made from old pallets with 50mm of woodfibre insulation behind it. I was a bit nervous about this project as it has a bit more of a design impact than some of the other projects, it’s been in a while now though and I am so pleased with the outcome visually. 

The first thing we did was tour the streets collecting abandoned pallets. I found that ones that were slightly broken already were better as they are easier to dismantle than really well built ones. The kids really enjoyed the collection process and I also got them to stain some of the planks we extracted to add some variety to the wall.

Next step was to get hold of some wood fibre insulation, not so easy for small quantities but thanks to https://phstore.co.uk/ for arranging it for me, delivery costs almost the same as the insulation in small quantities but cheaper than elsewhere and charming service too. I then fixed some 50mm battens to the wall at 600mm and push fitted the insulation between. 

The next bit involved a nail gun so was great fun managed to charm the lady at Travis Perkins into giving me a discount and I was off. I fixed them in an offset pattern and tried to group similar widths of board together so it wasn’t too bumpy. 

Then we had to make shelves for the plants to grow on. I used the ‘dice’ from the pallets (technical term for the square bits that go in between the pallets) screwed into the wall to support shelves made from more pallet boards. These dice are pretty tough and tricky to drill through, one of them still has half a drill bit in it where it snapped. 

Once it was all up we put in the plants, I used Chinese evergreen, peace lily, some snake plants and a cutting from an old spider plant. I also put in a watering system! Well, I bought some globes that you fill up and they drip out over a couple of weeks, they are a bit inconsistent but a lot cheaper than some automated system. I top them up with waste water from kids water bottles and they are still growing nearly a year later.

My Shabbihaus eco retrofit project part 2 Boiler replacement

This came about through problems with the old boiler rather than careful planning. Firstly I replaced the thermostat with a Smart controller, this was about 5 years ago and the choice was limited but I got an Owl controller which allowed us to control the heating with a smart phone.

This allowed us to monitor electricity use as well as program the boiler simply online and turn it off for holidays etc. The controller was easy to fit as you replace the existing thermostat and use the same wiring. Once this was done the heating started coming on only when the temperature in the house fell below the required temperature we set. The previous controller turned on the heating when it was programmed to, regardless of the internal temperature and waited for the thermostat to turn it off again. This fine control and ease of use saved us 10% on our gas bills straight away.

The monitor really helped us concentrate on electricity use around the house and focus on reductions, however it also coincided with having kids and being at home a lot more so our usage actually went up for each successive year, as shown below. Now they are a bit bigger we are out more and using the meter to concentrate their minds too and starting to take our usage down again:

The boiler was an old Worcester and only about 64% efficient. A fault developed with it so it started heating up radiators whenever we used the hot water so we decided to get rid of it. I did plenty of research and luckily enough this coincided with Ecobuild so I was able to go round stalls there to look at a good range of boilers and ask silly questions. Efficiency of most boilers is well over 90% so my main concerns were how it would fit in my kitchen and reliability. I eventually settled on an Intergas boiler, not quite so common in the UK but it came with a 10 year guarantee and has very few moving parts and good reliability.


Very pleased with the boiler and five years later there have been no problems. We are warmer, the shower works better and our gas bills went down.

Very pleased with the boiler and five years later there have been no problems. We are warmer, the shower works better and our gas bills went down.

We also got TRVs installed on all the radiators.

GLA warmer homes scheme

I am proud to be working with Retrofitworks on the GLA warmer homes scheme. For the past year we have been providing retrofit co-ordinator services to the scheme and provided new energy efficiency measures for over 250 homes throughout London.

As well as providing new boilers we have been improving ventilation, insulating walls and roofs and helping customers improve the windows and doors of their properties. We have even provided a new boiler for a pensioner living in a caravan.

The scheme involves a number of fully trained Retrofit Co-ordinators developing a plan of energy efficiency measures for the project based on a telephone interview and an advanced energy survey from a Domestic Energy Assessor.

The Retrofitworks retrofit co-ordinator team

Once the measures for the property have been agreed with the homeowner installation is carried out by one of the PAS 2030 certified installers and once complete carefully checked by the retrofit co-ordinator.

The scheme is one of the first to offer this independent verification of the work and this is creating better value for the client and the GLA as the co-ordinator is adding in extra measures for the funds available.

Putney roof insulation

The first stage of this project was replacing the insulation in the sloping roof of the dormer and adding storage to the eaves. The loft conversion has been done reasonably well and the flat roof area and rear wall properly insulated. 

#putneyretrofit
Original insulation showing the gaps and missing sections

However the existing sloping roof was not so successful. Polystyrene insulation had been installed between most of the joists, but not all, not sure why but they had missed some areas leaving big gaps in the insulation envelope.

#putneyretrofit
Starting to insert insulation between the rafters. Still some gaps to fill.

We replaced the 50mm of polystyrene with 50mm of KIngspan between the joists to create an airtightness barrier we filled all the gaps with Isocynate free expanding foam and then taped

them with aluminium tape. Then we added a further 50mm of insulated plasterboard below the joists.

Many loft conversions leave the eaves storage area uninsulated and the doors can prove a weak

#putneyretrofit
100mm of rockwool going between the rafters in the eaves storage area.

point with the wind whistling through them. We had already added rockwool to the floor area and we took the wall/roof insulation down to meet this and insulated the end walls as well creating a ‘warm’ storage area.

Putney retrofit project

 

#putneyretrofit
No garden to put the sign in

I am currently refurbishing this gorgeous two bedroom flat in Putney. The client is very keen to improve the performance of the house and I am working on the structure to ensure it will be warm, airtight and condensation free for the future. A Parity Home Energy Masterplan has also been carried out for the property and we are using this to inform the refurbishment.

#putneyretrofit
Important welfare facilities in place. Might need a spoon

 

 

The flat is spread over two floors with two roof terraces and the top floor is a loft conversion, this means there are lots of different types of construction and different opportunities to add different insulation types suitable for that construction.

 

We are also working very hard to minimise the VOC level in the flat and using appropriate

#putneyretrofit
Special low emission expanding foam

materials to combat this. I have been been checking all the materials before they come on site and consulting with the client to ensure she is happy. We have had to compromise in some areas, for instance the ceiling height is restricted in the loft conversion so we are using PIR insulation to keep as much space as possible, we have managed to source Isocynate free expanding foam to fill the gaps though so won’t be adding anymore chemicals to the air in the installation.

 

I will be adding updates and photos as this fascinating project progresses. I will mark them all #putneyretrofit

Reclaimed materials in side return extension in Hackney

A side return infill extension with an industrial style. Extensive use of reclaimed materials, high standards of insulation and a wildflower green roof.

We completed this project late on last year working with Clements Design as the architects.

The project aimed to turn a cramped kitchen into a spacious area for cooking, eating and socialising. There is an industrial and sustainability theme to the project, the materials used are often from or designed for factories. Electrics are contained in galvanised metal conduit and the floor is concrete. Walls are exposed brick, both reclaimed glazed brick and the existing London stock bricks revealed to the world. The large glass panels to the roof draw in light to what was once a dark area and bring out the rich colours in the reclaimed wood cladding.

Though the materials could be seen as austere they are softened by the contents of the room that reflect family life, there is space for a large wooden toy stove, a comfy sofa and a gorgeous oak dining table with mismatched chairs.

The large rear doors mean the garden can be seen and accessed easily from the house, the doors can be flung open in the summer for barbecues. The green roof will develop over time but already has wildflowers peeking over the parapet and they can be seen swaying through the glass roof.

The project was also designed in conjunction with the neighbours and they share the party wall and the box gutter.

Sustainability was a key part of the client’s aim for the project. Reclaimed materials were used wherever possible. All the bricks removed in the demolition stage were cleaned and re-used onsite to build the new structure. Internally there are two walls of glazed bricks reclaimed from a lift shaft in Kensington. The other walls are the original brick exposed and insulated on the outside where appropriate. The bi-fold doors are triple glazed with a u-value of 1.09 are factory finished for long life and are made from environmentally sourced timber from sustainable forests. The heating is underfloor and utilises the existing condensing boiler, three Nest controls were added to the system to control this and create two new heating zones in the house.

The wood (for drawer fronts, shelves and cladding) is from a reclaimed wood specialist in Guiseley, Leeds, called Machells and is cut down from Yorkshire Victorian mill joists.

The large pendant lamps are reclaimed from a 1950’s factory in the Stoke area.

The table was made in Leeds from British oak 35 years ago.

All the shelf brackets and drawer handles were made in England in foundries using all traditional methods.

All lighting is LED, even filament style traditional bulbs are actually LED.

The green roof is part plug planted and part seeded with a mixture of wildflowers, meadow plants and some sedums. The roof will flower through most of the year and provide habitat for insects and foraging for birds amongst other biodiversity benefits.

Nine months in and this green roof has been thriving

I went to see the roof I built in Kennington last month and took some photos I thought I would share. I wrote about this one last year showing the build up process to a green roof. I was particularly pleased that the insulation we put on as an added extra has made a real difference to the householders, the side return was previously a no-go area in the cold winter months but has now become habitable with the added warmth.

Anyway here are a few photos to illustrate how well the roof has been growing over the last nine months:

The flowers are growing well including the grape hyacinth
The flowers are growing well

A really good selection of wildflowers has sprung up
A really good selection of wildflowers has sprung up

Maybe I should have made the middle access a little narrower
Maybe I should have made the middle access a little narrower

Overall I am delighted with the roof and the clients are really pleased too. The roof has already developed really well and should develop further over the next few years. The roof should reach maturity after three years but different plants will dominate in different years and seasons.

If you want your own green roof give me a ring on 020 8133 0190 or drop me an email alex@ecoalex.com

 

 

Reclaimed bricks and cladding looking great

We have nearly finished the extension we have been working on for the last few months in Hackney. The walls, roof and floor are all in place and there is just fit out for the inside and the green roof to go on top.

The glass roof had to be lifted into place by hand
The glass roof had to be lifted into place by hand

The yellow London stocks were reclaimed on site. The doors have a u value of 1.09 including the frame
The yellow London stocks were reclaimed on site. The doors have a u value of 1.09 including the frame

All the wiring is in galvanised steel conduit. The exposed bricks will be protected by external wall insulation on the outside.
All the wiring is in galvanised steel conduit. The exposed bricks will be protected by external wall insulation on the outside.

The glass, reclaimed cladding, exposed steel and reclaimed bricks really work well together.
The glass, reclaimed cladding, exposed steel and reclaimed bricks really work well together.

A lightweight industrial screed is making up the floor
A lightweight industrial screed is making up the floor

New green extension in Hackney

Just a quick update, we broke ground on a new extension last week. It’s mostly just digging at the moment but still exciting. I got to put up a sign outside the house:

Ecoalex, new project

The project will develop over the next few weeks. The walls incorporate high levels of insulation and will be made using reclaimed materials including a white glazed brick interior and re-used wood cladding.

I spent some time in @thewashcoffee going through the plans from Clements Design with Shaun the project manager on Wednesday, checking the build process and making sure we will avoid thermal bridges. The design looks sound and we are starting on the steel supports over the next few days.

The guys all look smart in the new Ecoalex hi vis vests and are looking for opportunities to save materials on site and re-use as much as they can in the build.

Hi Vis

Dreaming of a green Christmas?

I am certainly dreaming of one, I enjoy Christmas as much as anyone but I do worry about the waste that goes on at this time of year. Presents are great but sometimes there are rather more than anyone needs, especially in a big family. Like many families we have instituted a one present per adult rule and this has certainly cut down on unnecessary pairs of slippers etc. However cute little nieces still need a present each and we still need to get a few presents for those close to us.

So now we have reduced what can we do to re-use and recycle the presents, along with getting some nice eco friendly presents for everyone. I have tried to find a few things that can help with this.

Eco friendly Christmas paraphenalia

Recycled Christmas crackersAs well as recycling your Christmas wrapping paper make sure yours is made from recycled paper, while your at it get some recycled crackers too. You can make your own Christmas decorations quite easily or buy ones made from recycled materials and all good lights these days use LEDs, saving you energy and reducing fire risk. I have listed a selection in the products section of the website that you can buy online.

Green toys for kids

To be honest kids toys are pretty amazing these days and you aren’t going to distract them entirely from computer games and plastic Kids rocket ship toyfun but there are lots of interesting alternatives out there that you can at least supplement them with. Every kid loves to climb in boxes and a cardboard rocket ship could be even better, a wooden racing car is a much healthier alternative to a plastic one for a small child, and with fewer chemicals. Kids also love creatures and creepy crawlies so a pond dipping kit or a bug jar could make them happy. More details of these eco friendly toys here. Thinking further ahead you could get a bat box and an id book and see what bats you can attract when they come out of hibernation.

Gadgets for grown ups

Home energy monitor and heating control
Owl Intuition E energy monitor

Everyone likes a gadget at any time of the year and Christmas usually brings lots along so why not get a few that help reduce energy use rather than increase it. I have been going on for a while about my Owl monitor and heating control and I still really love it. You can impress people by showing them your houses energy use on your phone and impress yourself by turning the heating on when you are on the bus home.

I recently started looking at products in B&Q as well as NHBS and Nigel’s Eco Store and they have just started to stock Lightwave products. These link up not just to the heating and electricity but also all the sockets and light switches in the house so you can create a real smart home and control the lights and all the appliances from a remote, your pc or your home. They sound great, if you buy some let me know how you get on.

How about saving water? A water pebble makes a cool little gift, put it in your shower and it helps you reduce water usage as well as looking funky. If too much water is a problem for you at times, why not get a green roof to soak some of it up?

If you have a wood burning stove you really must get an eco fan to go with it. These sit on top of the stove and circulate warm air around the house. They are made of two types of metal so it rotates when it gets hot.

I hope these gifts have wetted your appetite for a green Christmas, I have my eye open for some more and will add them in when I find some good ones.

Updates

Eco friendly gifts for her

Some choices for the women in your life, mum, sister, wife or partner. I have tried to pick a range of items that any woman would be pleased to receive. Love the rainbow turbine t shirt stylish with with an eco message as well.organic eco friendly t shirt

Eco friendly gifts for him

Some choices for the men in your life, dad, brother, husband or partner. I have tried to pick a range of items that any man would be pleased to receive. Cufflinks and skin care may seem a bit dull but these are a cut above your average and the skin care is certainly not a generic body shop I don’t know what to buy you box.

Alex