Render Coverage: The Ultimate Guide

When ordering materials online, customers are often unsure as to the quantities that they will require for the approximate square meterage they are working on. So, we’ve put together a guide to EWI Pro render coverage to make things more clear!

Coloured Render Coverage

Our coloured renders all come in a variety of grain sizes. This means that the grain size will determine how much coverage you’ll get out of a 25kg bucket. Bear in mind that these numbers may vary slightly depending on application; for example if you drop/lose relatively little product then you will get more out of the bucket. Coverage for our Premium Bio Silicone, Silicone, Silicone Silicate and Acrylic renders are as follows…

1mm Grain Size – 10m2

1.5mm Grain Size – 7-10m2

2mm Grain Size – 6-7m2

3mm Grain Size – 5-6m2

Monocouche Render Coverage

Monocouche render is a dry-mix render, so the coverage can vary depending upon how thick you apply it and how much water you mix in. The following coverage is therefore based upon applying the Monocouche render at a total thickness of 18mm before scratching back (two passes):

1 x 25kg bag – 1m2

Mineral Render Coverage

Mineral render is also a dry-mix render, however this is thin coat. One bag will therefore stretch between 8-10m2 depending upon application and the thickness that it is applied at. Mineral render does however need painting over with Silicone paint; one bucket of Silicone paint (15L) will cover 60-70m2.

Basecoats Coverage

Basecoats especially can be a tricky thing to calculate. Because the majority of our basecoats are multi-purpose and are used as both an adhesive and a basecoat, the coverage can vary:

Adhesion and basecoat – 2.8m2

Basecoat for rendering only – 4.5m2                                                                                                                                  

Primers

Substrate Primers

Substrate primers are applied directly to the substrate (be it brick, block or other) before any other materials are applied. Coverage of the primers is hard to estimate as certain substrates are more absorptive than others; for example if you are rendering a particularly dry substrate. Coverage for substrate primers are as follows:

Water Based Primer (5L) – 15-30m2 depending upon the absorptive capacity of the substrate

Universal Primer (20kg) – 50-70m2 depending upon the absorptive capacity of the substrate

Render Primers

Render primers are applied on top of the basecoat before the render itself is applied. These help to create a vibrancy of colour and strong adhesion to the basecoat. We have three main types of render primer, the Acrylic & Mineral Primer and Silicone Silicate Render Primer. Coverage for these is as follows:

7L bucket – 20m2

21L bucket – 60-70m2

And there you have it! Our ultimate guide to materials coverage. We hope this was useful! Keep a lookout for our latest blog posts – we upload every Tuesday and Thursday!