Description
Renders World stocks this Atlas additive for crews who need the rendering programme to survive a British autumn. Every figure below comes from Atlas's own product documentation, read live this session, and where the manufacturer is silent the page says so rather than filling the gap.
What the Accelerator Does to a Render in Cold, Damp Conditions
Atlas Eskimo is a ready-to-use liquid additive that initiates preliminary cross-linking of the polymer binder at the early water-evaporation stage, halving render setting time at 2 °C and 80% relative humidity and letting a coat go on when substrate and air are above 0 °C. That mechanism is the whole product: it does not warm the wall or protect against frost, it brings the binder to a stable film sooner. On a shoulder-season job it is the difference between a booked week and a cancelled one, which is why it sits alongside the silicone render range rather than in a general sundries aisle at Renders World.
- Setting time at 2 °C and 80% RH: approximately 16 hours, roughly twice as fast as the same render setting without the additive.
- Early resistance to light rainfall: after about 5 hours in those same conditions, three times faster than untreated.
- The temperature rule: substrate and air must both be above 0 °C at application, and the temperature may not drop below zero until at least 18 hours after the coat is finished.
The additive is neutral to the render's other properties, so it does not reduce the material's strength or degrade performance once set. It is a colourless liquid with a slightly perceptible ammonia smell, which is worth mentioning to a homeowner before a bottle is opened outside a kitchen window.
Which Atlas Renders the Additive Is Made For
Atlas names four renders for this additive, and the list is closed rather than indicative. Anything outside it needs confirmation from Atlas before it goes in a tub.
- Atlas Silicone Render — the white and grey bases, both stocked here.
- Atlas Silicone-Silicate Render — the hybrid finish used on breathable build-ups.
- Atlas Silicone Hybrid Render — not currently stocked at Renders World.
- Atlas Silkon BA — the concrete-effect silicone render.
Two points follow from that list, and both change what a buyer should order. The dedication is to dispersion renders, the ready-mixed pastes, so cement-based adhesives, basecoats and mineral renders are outside it. And it is an Atlas-only component: no Ceresit render appears on the list, so a CT 74 or CT 174 job in cold weather needs Ceresit's own cold-weather guidance instead. For the seasonal picture across the whole range, the UK render application timing guide maps the months and the per-product temperature limits.
Manufacturer Specification
| Property | Value |
|---|---|
| Product form | Ready-to-use colourless liquid additive, faint ammonia odour |
| Pack size | 250 g bottle |
| Relative density | Approx. 1.1 g/cm³ |
| Application temperature | 0 °C to +10 °C |
| Humidity | Suitable above 80% relative humidity |
| Setting time, 2 °C / 80% RH | Approx. 16 hours — 2× faster than untreated |
| Early rain resistance, 2 °C / 80% RH | Approx. 5 hours — 3× faster than untreated |
| Frost protection window | No drop below 0 °C until at least 18 hours after application |
| Dedicated renders | Atlas Silicone, Silicone-Silicate, Silicone Hybrid, Silkon BA |
| Dosage ratio | Not published — see below |
| Shelf life | Not published — see below |
The Atlas technical data sheet itself could not be retrieved this session; the figures above come from the manufacturer's product pages and the current Polish distributor listing. That leaves two gaps worth naming. No dosage ratio is published here, because the sheet is where it lives and a mixing ratio guessed from pack sizes is exactly the sort of figure that goes wrong quietly. No shelf life is published either. Ask the Renders World team for the current sheet before a large winter order and both arrive from Atlas paperwork.
One naming point matters at the ordering stage: Atlas currently markets this additive as Eskimo G, and the Polish trade listing carries the code ESKIMO-N-025 for the same 250 g bottle. If a delivery note or a bottle reads "Eskimo G" rather than "Eskimo", that is the current generation of the same product rather than a substitution.
How to Use It on a Cold-Weather Pass
The additive is supplied ready to use and goes into the render immediately before application — there is no dilution step and no induction time to wait out. Stir the tub thoroughly at low speed after adding it so the liquid is evenly distributed through the paste, then apply and texture with the same trowel-and-float technique the render normally takes.
- Read the wall, not the forecast: a shaded north elevation can sit several degrees below the ambient reading at 07:30, and an infrared thermometer settles whether the 0 °C threshold is genuinely met.
- Work the 18-hour window backwards: check the overnight low before starting, not after, since the coat needs to stay above freezing for eighteen hours from the moment the last panel is finished.
- Treat rain cover as separate: five-hour early rain resistance is a chemical milestone, not a licence to leave an elevation unsheeted in driving rain, so scaffold netting still earns its place.
- Order it with the render, not after: it goes into the finish coat only, so the primer and reinforced basecoat still need their own suitable window — the exterior render primers range covers the products beneath.
Sequencing the warmest elevations into the morning gives each panel the best of the cure window, and finishing a full elevation in one pass keeps scaffold-lift joins out of the finished texture. The thin coat render application method covers the trowel sequence itself.
Ordering the Additive Alongside Your Render
Renders World lists Atlas Eskimo at £9.00 per 250 g bottle as displayed in August 2026, in stock at the time of that check. Because no dosage ratio could be sourced this session, this page states no bottles-per-tub figure and no cost-per-square-metre addition — confirm the ratio from the Atlas sheet, then the arithmetic is straightforward against your tub count.
- For an Atlas silicone job in October or later: pair it with Atlas Silicone Render in the white base or the grey base for deep tinted shades, both on the dedicated renders list.
- For a Ceresit job: this additive is not dedicated to those renders, so plan the work inside the temperature limits on the relevant Ceresit sheet instead.
- For a whole winter programme: the full thin-coat render collection shows which bases are stocked, and the team can confirm dosage and quantities against your schedule.
FAQ — Conditions, Compatibility and Ordering
How cold can it actually get before the render goes on?
Substrate and air temperature must both be above 0 °C when the render is applied. Atlas also allows the temperature to fall below zero afterwards, but only once the render has set completely, which is at the earliest 18 hours after application finishes. A morning starting at 1 °C and climbing works; a morning followed by an early frost does not.
Can it go into any render?
No — Atlas dedicates it to four renders: Atlas Silicone, Atlas Silicone-Silicate, Atlas Silicone Hybrid and Atlas Silkon BA. All four are dispersion renders. It is not stated for cement-based adhesives, basecoats or mineral renders, and it is not stated for other manufacturers' products.
How much goes into a 25 kg tub?
The dosage ratio sits on the Atlas technical data sheet, which could not be retrieved this session, so this page does not state one. Ask us for the current sheet before ordering in quantity and you will have the ratio direct from the manufacturer, which is the only version worth working to when the whole benefit depends on getting it right.
Will it change how the finished render looks?
Atlas describes the additive as neutral to the material's other properties, stating that it neither reduces strength nor degrades performance once set, and the liquid itself is colourless. Atlas publishes no separate statement on colour or texture outcomes, so on a colour-critical elevation the sound approach is a test panel in the same conditions.
Does treated render need anything different afterwards?
Nothing beyond normal practice. The additive works on the setting phase rather than the cured coat, so the finish is maintained exactly as an untreated one — the silicone render maintenance guide covers the intervals and the cleaning routes.
Technical Documentation — Atlas Eskimo G