Description
The Atlas Basic EWI bundle 100m2 puts the Atlas materials for a large insulated, rendered wall into a single order: grey graphite EPS boards, adhesive, mesh, plugs, beads, primer and an acrylic finish. We put it together for about 100 m² of wall. It is one of our Atlas EWI bundles, and it finishes the wall in Atlas Acrylic Render, a fibre-reinforced render that shrugs off dirt and knocks.
There are 200 boards, each 50 mm thick and 1000 x 500 mm, so each covers half a square metre. Hoter U adhesive bonds them, plugs hold them, a mesh-reinforced layer covers them, Cerplast primes that layer and the render goes on last. The render is the white base, which Renders World tints on its own premises to the colour you order.
What is in the Atlas Basic EWI bundle 100m2
| Material | Quantity | Job in the wall build |
|---|---|---|
| Grey graphite EPS board, 50 mm, 1000 x 500 mm | 200 | The insulation layer, bonded to the wall |
| Atlas Uni-Grunt, 10 kg | 1 | Limits how much the bare wall soaks up before the adhesive |
| Aluminium base track, 53 mm, 2.5 m | 6 | Holds the first row of boards at the foot of the wall |
| Clip-on profile with mesh and drip nose, 2.5 m | 6 | Clips onto the base track and finishes the bottom edge |
| Atlas Hoter U grey adhesive, 25 kg bag | 40 | Bonds the boards and forms the reinforced layer |
| Klimas LTX-10 110 mm fixing plug, 200 per pack | 4 packs | Fixes the EPS boards; check the size suits your wall |
| Grey EPS plug caps, 100 per pack | 8 packs | Cover the plug heads in the boards |
| PVC corner bead with mesh, 2.5 m | 20 | Outside corners and reveals, set in the adhesive |
| Atlas 150 fibreglass mesh, 50 m² roll | 2 rolls | Reinforces the adhesive layer |
| Cerplast quartz primer, white, 15 kg | 2 | Acrylic and quartz key coat under the render |
| Atlas Acrylic Render, white, 25 kg | 10 | The finish coat |
Adhesive, mesh and primers
Hoter U is reinforced with microfibres and comes in 25 kg paper bags. The rate depends on the job it is doing.
- Bonding the boards takes 4.0 to 5.0 kg/m².
- The reinforced layer that carries the mesh takes 3.0 to 3.5 kg/m².
- The mesh is Atlas 150 fibreglass, 150 g/m², sold as a 50 m² roll.
- Uni-Grunt goes on the bare wall first. It limits how much the wall absorbs before the adhesive, including adhesives for thermal insulation.
- Cerplast goes on the dry reinforced layer before the render. It is a ready-to-use acrylic and quartz primer that helps the render grip, evens out absorbency and makes texturing easier. It takes 0.3 kg/m² on average and dries in 4 to 6 hours.
Layers in the order they go on
- Prime the bare wall with the 10 kg tub of Uni-Grunt.
- Fix the base track level along the foot of the wall and clip the profile onto it.
- Bond the boards with Hoter U, working up from the track.
- Plug the boards with the LTX plugs and cap each plug head.
- Set the corner beads in the adhesive on outside corners and reveals.
- Embed the Atlas 150 mesh in a reinforced layer of Hoter U.
- Let that layer dry for at least 1 day at 20 °C and 50 % humidity.
- Prime it with Cerplast.
- Apply the acrylic render.
The acrylic render finish
Atlas Acrylic Render is made from an acrylic resin reinforced with microfibres. It resists dirt and mechanical damage, is not prone to algae growth and is water-repellent. It has a lambskin texture and is supplied in 25 kg plastic tubs.
| Grain | Texture | Consumption by hand |
|---|---|---|
| Texturing aggregate up to 1.5 mm | Lambskin | Below 2.5 kg/m² on average |
The rate depends on how even the wall is, and machine application uses less. Because hand consumption is below 2.5 kg/m², a 25 kg tub covers more than 10 m² by hand (25 kg ÷ 2.5 kg/m² = 10 m²). Atlas advises a trial on the wall for the exact figure.
Work and set the render between +5 °C and +30 °C with the air humidity under 80 %. It skins over in about 15 minutes and dries in about 24 hours at 20 °C and 60 % humidity, and it needs shelter from direct sun, wind and rain while it dries. Use render of one production date on one surface, and do not mix hand and machine application on the same building.
Choosing the colour
Atlas makes this render in 406 colours, and Renders World tints it on the premises, to order. Three points decide which colour suits this bundle.
- The base: this bundle carries the white base, which takes whites, creams and lighter shades.
- The adhesive: with Hoter U in the reinforced layer, Atlas asks for a colour with an HBW above 20.
- The measure: HBW is how much light a colour reflects. White scores 100, and darker, stronger colours score lower.
The base and the adhesive point the same way. Choose a lighter colour, check its HBW before you order and ask the team if you are unsure. Tinted product is outside the 14-day change-of-mind return, so settle the colour first.
Walls where Atlas suggests a different finish
Atlas recommends its silicone render in place of the acrylic in these places:
- Shaded places
- Walls close to trees and green areas
- Damp and wet areas
- Rural and industrial zones
- Farm and industrial buildings
- Historic buildings
If your wall is one of those, choose a different finish before you order this bundle.
The acrylic is also not for horizontal surfaces under standing water or snow, or for walls wetted by rising damp.
What the bundle does not include
The bundle holds the materials in the table above. These are bought separately:
- Tools for mixing, cutting and applying
- Fixings to hold the base track to the wall
- Window sills and sealants
- Anchors other than the LTX plugs
Ordering, delivery and returns
After you order the Atlas Basic EWI bundle 100m2, the team arranges delivery with you.
- Dispatch — orders go out the same day when the goods are in stock.
- Delivery cost — the checkout cannot calculate it. Once you have ordered, the team contacts you with the most cost-effective option.
- Pallets — pallets up to 1200 kg travel next day, or in 2 business days on the economy option.
- Kerbside — every delivery stops at the kerb, and moving the goods past it is down to you.
- Collection — collect from the Renders World counter at Unit 9A, Central Trading Estate, SO14 5JP in Southampton, Monday to Friday 7am to 5pm and Saturday 7am to 12pm. It is closed on Sunday.
- Returns — a change-of-mind return runs to 14 days, with the goods in original condition. Hoter U comes in paper bags, and goods in paper bags, tinted products, goods bought under the shop’s 5, 10 or 15 percent promotions and special orders sit outside that return.
Questions about the bundle
How much wall is the bundle meant for?
The Atlas Basic EWI bundle 100m2 is put together for about 100 m² of wall. Openings, corners and the thickness of each coat all change what you use, so measure your wall and compare it with that figure.
Can I choose the colour of the render?
Yes, from lighter colours. The bundle carries the white base, and with Hoter U in the reinforced layer the colour needs an HBW above 20, which means it must reflect plenty of light. Dark and strong colours score lower. Renders World tints on the premises, to order, and tinted product cannot be returned for a change of mind.
Is acrylic right for a shaded or damp wall?
Atlas recommends its silicone render instead for shaded, damp and wet places and for walls near trees and green areas. The section above lists the full set of places.
Which grain does the render come in?
Atlas Acrylic Render has a lambskin texture, and Atlas lists a single grain for it: aggregate up to 1.5 mm.
How long must the reinforced layer dry before priming?
At least 1 day at 20 °C and 50 % humidity. Cerplast then goes on, and the render follows.
Does the bundle include tools or the fixings for the base track?
No. Tools, base track fixings, window sills, sealants and anchors other than the LTX plugs are ordered separately.
Will the 110 mm plugs suit my wall?
The bundle carries Klimas LTX-10 110 mm plugs. Before you order, check the size on the plug’s own product page and ask the team if you are unsure.
Can I send the bundle back if I change my mind?
Within 14 days and in original condition, yes, with exceptions: the Hoter U bags, any tinted render, goods bought under the shop’s promotions and special orders are outside the return.