Complete EWI System Bundle

7 products

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How to choose

How much wall are you insulating?50 m²: Basic 50 m²Standard 50 m²ULTRA 50 m². 100 m²: Basic 100 m²Standard 100 m². 150 m²: Basic 150 m²Standard 150 m².
Which finish do you want?Basic has an acrylic render, Standard a silicone-silicate render and ULTRA the Gemini RS render. Only the render changes; the rest of the kit is the same.
Is the wall shaded, damp or close to trees?Basic is not the one for walls like that. Look at Standard or ULTRA, or ask us first.
Quick picksSmaller wall: Standard 50 m². Larger wall: Standard 150 m². Gemini RS finish: ULTRA, 50 m² only. Tinted render and bagged adhesive can't be returned for a change of mind.

When you are insulating a wall from the outside, a complete EWI system bundle puts everything into one order: boards, adhesive, mesh, fixings, beads, primer and render. Say how much wall you have and which finish you want on the outside, and you can go straight to the matching Atlas bundle.

What comes in every complete EWI system bundle

Every bundle is the same kit made up for a set area of wall. For each 50 m² of wall you get the lines in this table, and the 100 m² and 150 m² bundles carry the same lines at two and three times the amount.

In the bundle	50 m²	100 m²	150 m²
Grey graphite EPS boards, 50 mm, 1000 x 500 mm	100	200	300
Atlas Hoter U adhesive, grey, 25 kg bags	20	40	60
Atlas 150 fibreglass mesh, 50 m² roll	1	2	3
Klimas LTX-10 110 mm plugs, packs of 200	2	4	6
Grey EPS plug caps, packs of 100	4	8	12
PVC corner beads with mesh, 2.5 m	10	20	30
Aluminium base tracks, 53 mm, 2.5 m	3	6	9
Clip-on profiles, 2.5 m	3	6	9
Finishing render, 25 kg tubs	5	10	15
Cerplast quartz primer (white) and Atlas Uni-Grunt	Included	Included	Included, with Uni-Grunt in 5 kg and 10 kg

Each board covers 0.5 m², and a 50 m² bundle has 400 plugs for its 100 boards, four to each board. If you want to see where each of these parts sits in the wall, EWI build-up layers explained takes you through them layer by layer.

Basic, Standard or ULTRA: only the render changes

Boards, adhesive, mesh, fixings, beads and primer are the same in all three bundles. The render on the outside is the one thing that differs, so the choice comes down to the finish you want on the wall.

Bundle	Finishing render
Basic	Atlas Acrylic Render, white base
Standard	Atlas silicone-silicate render
ULTRA	Atlas Gemini RS render, white base

Each render comes in 25 kg tubs. This is what Atlas says about them:

Atlas Acrylic Render, in Basic, is reinforced with microfibres. It is resistant to dirt and mechanical damage, water-repellent and not prone to algae growth.
Atlas silicone-silicate render, in Standard, is water-repellent and vapour-permeable. It is not prone to algae growth, is crack-resistant and has high impact resistance.
Atlas Gemini RS, in ULTRA, is reinforced with fibres and has a lambskin texture with grain up to 1.5 mm. Atlas describes a lasting water-repellent effect and a self-cleaning surface (photocatalysis).

For a longer look at how the tiers differ, see bundle tiers explained.

Choose a size: 50, 100 or 150 m² of wall

Pick the complete EWI system bundle that matches the area of wall you are insulating. Basic and Standard are made up for 50, 100 and 150 m², and ULTRA is made up for 50 m² only.

Wall area	Basic	Standard	ULTRA
50 m²	Basic 50 m²	Standard 50 m²	ULTRA 50 m²
100 m²	Basic 100 m²	Standard 100 m²	Not sold in this size
150 m²	Basic 150 m²	Standard 150 m²	Not sold in this size

A quick check on your measurements: the boards in each bundle add up to its wall area, with 100, 200 or 300 boards at 0.5 m² each. If your wall falls between two sizes, ask us before you order. To see what an EWI job comes to overall, the 2026 guide to what EWI costs sets it out.

Choosing a render colour for your bundle

Your colour sits on the bundle's basecoat, and that sets a limit on how dark you can go. Very dark and strong colours are not suitable over the bundle's basecoat. Choose a colour with a light reflectance value (HBW) above 20, or ask us before you order.

Bundle	Colours in the Atlas range	Light reflectance value (HBW) over the bundle's basecoat
Basic	406	Above 20
Standard	406	Above 20
ULTRA	418	Above 20

Tinted render is outside our 14-day change-of-mind return, so settle on the colour before you order.

Is Basic the right bundle for a shaded, damp or rural wall?

Atlas's technical sheet for its acrylic render points walls like these to a silicone render instead of the acrylic:

Industrial and economic zones.
Rural and farm areas.
Wet areas and the surroundings of water.
Walls close to trees and green areas.
Shaded places.

If your wall is on that list, Basic is not the bundle to pick. Standard and ULTRA use different renders: Standard has Atlas silicone-silicate render, which is water-repellent and not prone to algae growth, and ULTRA has Gemini RS. Not sure which suits your wall? Ask us before you order.

What a bundle leaves out, and what to buy separately

A complete EWI system bundle is a fixed kit built around 50 mm graphite EPS boards. Where your wall needs something different, buy that part on its own and keep the rest of the bundle:

A different board thickness: single boards from EPS insulation boards.
Mineral wool in place of EPS: the mineral wool collection.
More adhesive or basecoat: EPS adhesives and basecoats.
More plugs, beads or other fixings: fixing accessories.

For guidance on EWI in general, start from the EWI systems collection.

Checking quantities, delivery and returns before you order

Renders World processes orders for a complete EWI system bundle the same day when stock is available. The online store can't work out shipping automatically, so once you have ordered, our customer service team contacts you with the most cost-effective delivery.

Pallets up to 1200 kg go next day, or in 2 business days with the economy option.
All deliveries are kerbside only.
Renders World accepts change-of-mind returns within 14 days, for items bought directly from Renders World or its online store.
That return does not cover tinted products, goods in paper bags (the Hoter U adhesive comes in paper bags), items bought under a 5, 10 or 15 per cent promotion, or special orders.

The full terms are in the shipping policy and on the cancellations and returns page.

FAQ: bundle contents, sizes and ordering

How much wall does a 50 m² bundle cover?

A 50 m² bundle is made up for 50 m² of wall: 100 boards of 0.5 m² each, one 50 m² roll of mesh and five 25 kg tubs of render. The 100 m² and 150 m² bundles carry two and three times as much.

Can I change the board thickness or the render?

Every bundle uses 50 mm boards, so a different thickness or mineral wool is bought separately. The render is set by the bundle you choose: Basic has acrylic, Standard has silicone-silicate and ULTRA has Gemini RS.

What is the difference between Basic, Standard and ULTRA?

Only the finishing render. Everything else in the kit is the same, in proportion to the wall area.

Can I use a bundle on a wet, shaded or tree-lined wall?

Not with Basic, because the acrylic render's own sheet points walls like these to a silicone render. Look at Standard or ULTRA, and ask us first if you are unsure.

Are there limits on the colour I can choose?

Yes. Very dark and strong colours are not suitable over the bundle's basecoat, so choose a light reflectance value (HBW) above 20 or ask us before you order.

How do the finishes stand up to dirt?

The Basic acrylic render is resistant to dirt and not prone to algae growth. The Standard silicone-silicate render is water-repellent and not prone to algae growth. For ULTRA, Atlas describes a lasting water-repellent effect and a self-cleaning surface on Gemini RS.