Services

What we offer

EWIS specialise in installing Exterior Wall Insulation Systems on new build and existing buildings to reduce heat loss, making them more energy efficient, easier to maintain and with an improved appearance. This has the added benefit of increasing value and improving the property’s saleability.

We work closely with the leading manufacturers and suppliers of External Wall Insulation products, ensuring that the most appropriate systems are specified and expertly installed.

Whichever manufacturers system is adopted, it will normally comprise of a layer of non-combustible insulation that is attached to the original outer wall surface using special adhesive and mechanical fixings. This is followed by a reinforced mesh, primer and finally the external wall finish.

The final finish can be a choice of thin coat render, thick coat render, dry dash or brick effect according to the requirement and environment. The specifications of the various finished are as follows:

Thin Coat Renders

With the advantage of being available in an extremely wide range of colours, these premixed renders are normally applied in a single coat, thus making them easy and quick to apply with a trowel. Often with a silicon base these low maintenance renders are easy to clean.

Render availability is in silicon, silicate, acrylic or mineral and applied to an overall thickness of 0.6mm to 3mm.

Thick Coat Renders

Thick coat renders, of up to 15mm, are applied where a more durable and impact resident finish is required. Often using a coloured mineral base, the render powder is mixed with water and applied by spray or hand-scraped according to the finish required. These renders are available in a range of pastel colours.

Dry Dash

As an alternative, traditional finish to a thick coat render, small aggregate is hand-thrown onto the wet render to give this popular effect, also known as pebble dash.

Brick Effect

To insulate a solid brick property, whilst maintaining its traditional look and style, we use various brick effect products using one of the following methods:

Clay Brick Slips: these are highly realistic brick tiles ranging in thickness from 6mm to 15mm which are fixed using adhesive to the EWI basecoat and the joints ‘pointed up’ using a specialist grout.

Acrylic Brick Slips: as a more cost-effective alternative to clay brick slips, these flexible imitation brick tiles are thinner and easy to apply. Like brick slips, they are fixed to the EWI basecoat and jointed using a specialist grout.

Brick effect render: instead of using brick tiles, this effect is achieved by applying two coats of render. The base coat is the desired colour of the mortar, and the topcoat resembles the brick colour and texture. When the topcoat is cut back in a brick pattern it reveals the mortar colour below. This can be a very effective technique, especially when additional colours and stains are added to match local brick stock.