Monthly Archives: March 2017

How do I price external wall insulation materials and colour render for my job?

How do I price external wall insulation materials and colour render for my job?

How do I price external wall insulation materials and colour render for my job?

Before you start the job we strongly advise carrying out a full and comprehensive survey of the property you are pricing the job for. Make sure you have the right equipment at the survey stage. We would recommend a clipboard, notepad, HB pencil, tape and a laser measuring device. Start the survey by getting your bearings around the property by taking photographs of each elevation of the property and generally have a good walk around. For example, if you are surveying a semi-detached property you will obviously be measuring the front, the side and the back of the property. The customer may well have other ideas about which elevations they want to insulate.

How to measure the property for your insulation and colour render materials?

Using either the tape measurer or the laser tape-measuring device, measure each elevation of the property. For the height of the property we will always recommend starting from ground level, then measuring up to the soffit level. For the width, take measurements edge to edge, then taking your height value and carrying out the multiplication to give your surface area of the wall.

You may have noticed that we have completely ignored the windows, doors and other openings from the overall square meterage or surface area calculation. This is because when you’re carrying out the job you will find out that the works around the openings take considerably longer to complete – right from preparation, to beading installation and overall finishing.

However, each window, door and opening should be measured separately. This is to provide the linear meterage for all the angle, corner and reveal beading. You may also want to install window head and under sill beads.

Ensure the perimeter has been measured of the property to work out the number of starter tracks and other fixings. If the property roof overhang is near enough flush with the external walls, then you will need to work out any verge trim cappings to use.

Finally, capture the rest of the corners of the property for your corner beads, noting down any stop bead or expansion bead profiles required.

Remember: on the thin-coat render system, the beading is embedded into the base coat or the scrim adhesive layer of the system. So, unlike thick coat renders, the beading is hidden within the system.

Note down the positioning of auxiliary items for treatment with external wall insulation systems

When the elevation information has been captured, ensure that you take plenty of photos to map the external fixtures and fittings, noting down the positions of any ventilation, boiler flues, utility boxes and external cabling. You will need to spend a bit of time noting down all the positioning of the auxiliary items as it could have a material impact on the price of your materials (pipework, etc) and overall job (gas engineer, plumbing fees, etc).

Note: any BT, Virgin or other telephone boxes need to be worked around and left alone, unless the customer has separately agreed with those utilities on any adaptations.

For example, boiler flues will have to be extended by a Gas Safe engineer; likewise any gas pipes that are externally visible should be dealt with appropriately. Downpipes and guttering will have to be extended outwards to meet the new profile of the wall and obviously reattached once the insulation installation process has been completed. Please don’t bury any external cables as they will have to be appropriately dealt with, either by a qualified electrician, or unattached from the existing substrate and then reattached appropriately once the external wall insulation installation process has been completed.

For additional reading on domestic combustion equipment, ventilation and cooling equipment, please refer to additional industry guidelines and or the manufacturer’s specifications.

Getting coverage right for bags of materials and buckets of colour render

If you are unsure about the coverage of the base coat/scrim adhesive bags or the coverage of the render buckets, then please refer to the manufacturers guidance and instructions on the recommended coverage areas for those materials. It is always best to try and order a little bit extra for the job (approximately 10%-15% more materials), which will ensure that you don’t run out of materials during the key installation part of the job. Running out of materials can not only put you in a tricky situation with the client but can make the job take much longer than expected, and increase the price for the materials.

Get your colour render right with the customer

Great tip! Get the customer onside with the colour render selection nice and early in the installation process. Ideally this could all take place during the quotation stage, by simply having the right colour charts and render swatches with you.

Planning your external wall insulation materials and colour render tinting with the distributor and/or manufacturer will not only build in any leads times at the start of the installation process, but you can actually then plan for the delivery of those materials on the dates that you want them to. Waiting for additional deliveries can be absolutely frustrating for the fitter as they are nearly always beset by some sort of issues, and can also push up the material prices you are needing.

How can EWI Store help with your external insulation and colour render materials?

EWI Store has made the process of pricing your materials so much easier. Have you heard of our external wall insulation and render calculator? By doing all the necessary survey steps as mentioned previously and then pulling all the key figures, you can use our online calculator to quickly size the material requirements for your installation job. If you have issues with colour render selection – no problem at all! There are dozens of colours for your customer to choose from using our colour render tool.

colour chart

Why our Coloured Render is the Best on the Market

At EWI Store, we make sure we only sell the best quality products. All of our materials are BBA approved, which means they have been tested to meet the highest of safety and quality standards by the British Board of Agrement. Our BBA Approval sets us apart, placing us at the top end of the market and making us the choice of professionals. All of our coloured renders provide unparalleled performance at great prices.

We offer four different types of render, and all of them are available in hundreds of colours. Whatever your customer’s requirement, we can fulfil it!

How is EWI Store Coloured Render Different?

Traditional renders are made from a mixture of sand, cement, lime and chemicals. With these renders, you normally have to wait between 2 weeks and 2 months for them to dry. You then you have to paint over the top with paint.

Cement renders also crack really easily and are always at risk of developing efflorescence, which can really affect the way that they look. Sand and cement renders are also not very breathable, which is why a lot of people in older properties suffer with problems from damp and mould. High tech modern thin coat renders are specially engineered to prevent all of these occurrences. We think that cement renders are really old fashioned, because the technology for thin coat renders is vastly improved against sand and cement renders.

Our renders are different because the colour is included. This helps you for a number of reasons:

  • Firstly, having to use separate materials can really delay jobs. With our coloured render, you only need to apply one coat and then your job is finished – no hanging around to have to paint over the top.
  • Costs can be cut by using one material instead of separate render and paint.
  • Our coloured through-render is more robust, and because the pigment goes through every layer, it will not show if you scratch. If you damage normal render and scratch the paint, it will show what is underneath.
  • Our coloured render can be applied on top of: EPS, XPS, mineral wool, wood fibre, phenolic board, cement board, plus in some cases on OSB or WPB. It can also be used on aqua panels. This is unlike traditional render, which can only be applied on top of brick or block work. Our coloured renders, available in several different finishes – silicone, silicone silicate, mineral and acrylic – can be used on almost any substrate.

Choose EWI Store Coloured Render

Our coloured render is the highest quality out there. It is well worth having a thicker protective layer of render, rather than just finishing a job with paint. Our range of coloured renders includes Silicone, Silicone Silicate, Acrylic and Mineral.

  • Acrylic render is fantastic for holding onto colour pigment, it’s also impact resistant so is great for clients who have children or pets – it will hold up against the kids kicking their footballs against the wall! (You can read more about our Acrylic render )
  • Mineral render is breathable and is fantastic for installing in colder climates because it is fast drying. Mineral render is coloured, however it requires painting with our silicone paint to seal it in and protect it against limebloom. (Read more about Mineral render here!)
  • Silicone render is our top of the line render. It self-cleans, which means it’s perfect for if you live near water or plant life. It’s also incredibly breathable and vapour permeable, so it will allow moisture to escape from the walls of your home and prevent damp. (Read more about Silicone render)
  • Silicone Silicate render is our most popular render. It offers the same breathability as Silicone render but is less capable of self cleaning.

Our coloured renders have good weather-resistant properties and remain robust over time. They are highly resistant to cracking when installed with flexible materials underneath. All the range apart from acrylic are breathable.

Best of all, coloured render always looks great.

There’s a reason why coloured-through render is the type most commonly chosen by architects! Nearly everyone we speak to in the trade says it’s getting more and more popular.

How is EWI Pro Coloured Render Made?

We keep all of our renders in stock and when a customer makes a purchase for a coloured render, we have the best facilities to be able to mix our renders to a specified colour. We mix our coloured renders in-store by simply adding the pigments and then mixing the render in using the latest colour mixing machinery. We ensure that after mixing, it is ready to be dispatched on the same day and it should be with you within 24-48 hours, preventing any delays on finishing your project, and keeping customers happy.

If a customer wants a particular shade, or simply wants to match the colour of the new render to their existing render then we are happy to do this as well!

Order a Coloured Render Tester Pot

We understand that customers want to see the coloured renders in person, so we’ve brought out a Coloured Render Tester Pot for just this reason! It’s available in our entire shade range in a default grain size, and is simply available as a means of testing our colour range. Order yours now!

Shop online or get in touch now if you have any questions!


EWI-63331 Bellcast Bead (2m)

Solid wall insulation made easy!

There are lots of components involved when installing solid wall insulation or render systems. What we have done at EWI Store is to try and simply the process for our customers by offering a number of things that our competitors don’t!

1. Use our solid wall insulation calculator.

We have spent the last few months developing a calculator to help users calculate exactly what materials they need for a job. It means that if the size of the area to be rendered or insulated is known then we can automatically provide a shopping list of exactly what is required to do the solid wall insulation install.

The calculator considers the thickness and type of insulation, the adhesives required and even allows you to visualise the colour of the project.

We are very proud of it and you give it a try yourself by clicking external wall insulation materials calculator!

2. Minimising the number of components on site

One of the things we really like about the EWI Pro system aside from the quality of the components is that they have tried to simplify the install process for their installers.

Take for example the adhesives – for many manufacturers they recommend using different adhesives for attaching insulation boards to the wall and then the base coat layer. They have recognised that this can cause issues at the end of job having unused bags, but also the confusion of using the wrong adhesive at the wrong time.

The solution they have come up with is very simple – basically you can use one adhesive (EWI-220) for sticking EPS boards to the wall and then the same adhesive for the base coat layer. Likewise, for Mineral Wool boards they also have manufactured one adhesive that does the job (EWI-225). This means that once you have chosen the insulation material you are going to install on the house, you know that you only need to have one type of adhesive on site. This means no confusion of which to use where, but also it means you shouldn’t have bags left over at the end of the job (and if you do you can take them to the next job knowing you can use them!).

3. We sell all the components for the solid wall insulation/render job

We pride ourselves on the fact we sell all the materials required for the job, so you can complete it from start to finish. We sell everything from starter track up to the verge trim and everything in between. We know how annoying it is when you need to buy a few bits from one supplier and other bits from another.

We also offer all the tools and protective items to get the job done too, just one more reason to shop at EWI Store for you rendering and insulation materials!

baner ewi pro

Welcome to the new EWI Store!

Welcome to our new site – the home of everything to do with solid wall insulation!

At EWI Store we sell award winning solid wall insulation products, all BBA-approved so you can rest assured you are getting the best on the market.

So aside from a new lick of paint, what else is new at EWI Store?

We have a new improved materials calculator – if you haven’t tried it, then you should. It is the perfect way to get the right quantities and proportions of materials. If you are new to solid wall insulation, or EWI Pro specifically, then our tool will ensure you order just right. We have also included our new colour chart in the latest iteration to allow you to see a little more accurately what your property may look like once the insulation is installed.

While we are talking about the colour chart, we now offer a standalone colour chart tool to allow you to quick and easily pick the colour you want. We have cut down the number of stock colours we offer, instead we are focusing just on the most popular renders we have sold over the last 3 years. The reason for this is pretty simple: too much choice seems to be a bad thing!

Happy render, happy customers…

Installers are telling us that providing customers with so much choice just delays decisions. Choosing between 3 near-identical grey colours appears to take some weeks it seems and therefore we have reduced the choice to help speed things up a little! We also have a new pricing system for our colours. The white colour has no additional charge, off whites (known as Tier 1 colours) are £4 per bucket, Tier 2 colours are £12 per bucket (these tend to be slightly darker colours) and Tier 3 (really vibrant/dark colours) are £20 per bucket. Obviously if you are a trade customer, trade discounts apply. If you desperately need a colour not included on our minimised colour chart then we can obviously make these; however additional charges may apply!

We are also delighted to now offer verge trims. These are the aluminium bits that go on the top of the solid wall insulation system; they are used to help prevent water ingress down the back of the system. These are all made in the UK and although we have standard profiles, these can be adjusted if required to suit the needs of the installer.

The good news is that despite the new shiny website, it is business as usual here at EWI Store, so if you need a great value solid wall insulation system with unparalleled support (and free training!) then get in touch. You might even want to give our EWI materials a calculator a try to get started….

Go on – give it a try!


buy renders and EWI Systems from EWI Store

EWI – wet fix versus dry fix systems

When solid wall insulation is installed on brick or block work, it is very important the insulation material used stays in place. This goes with out saying to be honest: the reason being if the insulation were to move once installed, the whole of the system would come away from the wall – not ideal!

There are three different ways to attach the insulation boards to the wall:

  1. Attach with an adhesive (wet system)
  2. Attach with mechanical fixings (dry system)
  3. A combination of 1 & 2 (the best system!)

At EWI Store, we offer the BBA-approved EWI Pro external wall insulation system. This system is great for improving the thermal comfort of your home, lowering energy bills and also giving your property a complete facelift. It is also a belt-and-braces system: that is, it uses a combination of both adhesive and mechanical fixings.

You might ask why we bother – there is certainly more work if you are sticking the boards to the wall first with adhesive and then using supplementary mechanical fixings.

There are several reasons why we recommend a wet fix system with supplementary mechanical fixings

1. We want to sell solid wall insulation that lasts!

If you use only adhesive or mechanical fixings then the insulation boards are never held in place as firmly as when you use a combination of the two. We want to sell systems that are going to last many decades once installed, so we always advise to use both adhesive and mechanical fixings.

2. Dry fix only systems can suffer from draughts!

If you use dry fix systems then cold draughts can travel up the back of the boards, limiting the impact of the insulation. The cold draughts can accelerate the rate of heat loss, but if the winds are strong enough they can also try and pull the insulation from the wall.

Using the envelope method to apply the adhesive on each board means no draughts can travel behind the boards. This limits heat loss and ensures that the boards are held firmly in place.

3. Adhesive acts as a leveller!

The great thing about the UK is that we have some of the most diverse building stock in the whole world. Historically, we have made houses that are going to last – which is great – but it is fair to say that building methods from yesteryear didn’t always result in a straight wall!

By using adhesive on the back of the insulation boards, you can help level out some of the discrepancies in the wall. Obviously it is not going to be possible every time if the wall is really wonky, but it should certainly help take out some of the kinks!

We often refer to the EWI Pro external wall insulation as a belt-and-braces system: i.e. you are going above and beyond what is potentially required. But if you want these systems to last then we certainly recommend it is worth doing!