Description
Atlas Salta silicone masonry paint base white 10L is the tintable pale base of the Atlas modified silicone façade paint, stocked in the silicone masonry paints range at Renders World at £57.50 per 10 litre bucket (August 2026).
Where Atlas Salta White Base Earns Its Place on UK Walls
Atlas Salta silicone masonry paint base white 10L suits sound rendered and plastered UK façades, classified W3 for low water permeability under EN 1062-1:2004, so wind-driven rain sheets off while the wall keeps drying outwards.
That combination is what a repaint on an exposed elevation is bought for: the film stays closed to liquid water while the substrate behind it continues to release moisture. The white base is the one to tint when the specified SAH shade sits in the pale half of the palette, where a bright starting point develops pastel pigment cleanly.
- Thin-coat mineral and dispersion renders — the sheet's primary substrates, including fresh mineral renders from five days old.
- Cement and cement-lime renders — traditional wet-applied backgrounds, once fully cured.
- Gypsum plasters, skim and plasterboard — listed on the sheet alongside the mineral backgrounds.
- Unrendered masonry — concrete, brick, blockwork, ceramic, aerated and calcium-silicate units.
- Repaint work — sound existing coatings, once growth, dust and grease are off and loose paint is removed.
Why Specifiers Pick the White Base for Pale SAH Shades
The buying case rests on four sheet-declared properties and one merchandising fact, and every one of them is checkable against the technical data sheet linked at the foot of this page.
- Pearl Effect surface: the film is described as exceptionally compact and microscopically smooth, so settled dirt and fungal spores lose their grip and leave with rain and wind.
- Low absorption and bio resistance: the sheet attributes its unfavourable conditions for fungi and mould to low water absorption and the coating's acid–alkaline reaction — useful on shaded northern elevations.
- No separate primer on fresh renders: the first coat primes the substrate on fresh thin-coat work, and low-absorbency backgrounds need no additional priming either.
- W3 with a V2 vapour class: water permeability below 0.1 kg/m²·h⁰·⁵ alongside a medium vapour transmission class, both to EN 1062-1:2004.
- 400 SAH colours at 39.9 g/L VOC: the Atlas Salta palette runs to 400 shades of the SAH render and paint colour system, against a permitted VOC limit of 40 g/L.
Atlas Salta Technical Specifications Read From the Data Sheet
Every figure below is transcribed from the Atlas Salta technical data sheet, update dated 30 June 2015, which covers the Atlas Salta paint rather than the Salta N, Salta S or Salta E variants sold under similar names.
| Property | Declared value |
|---|---|
| Product basis | Selected polymer dispersion, fillers and pigments |
| Pack | 10 L plastic bucket · 440 L pallet |
| Gross weight (live product data) | 15 kg per bucket |
| Density | Approx. 1.45 kg/dm³ |
| VOC | 39.9 g/L (limit 40 g/L) |
| Gloss, EN 1062-1:2004 | G3 — matt |
| Film thickness, EN 1062-1:2004 | E3 — 100 to 200 µm |
| Grain size, EN 1062-1:2004 | S1 — fine, under 100 µm |
| Vapour transmission, EN 1062-1:2004 | V2 — medium, 15 to 150 g/m²·d |
| Sd, general data line | Under 0.14 m |
| Water permeability, EN 1062-1:2004 | W3 — low, under 0.1 kg/m²·h⁰·⁵ |
| Adhesion, PN-80/C-81531 | Grade 1 |
| Working temperature | +5 °C to +30 °C |
| Drying · recoat | 2–6 hours · next coat after approx. 6 hours |
| Colours | 400 shades, SAH colour system |
| Shelf life | 12 months from production date |
| System scope | ATLAS ETICS · AT-15-9090/2014 · ZKP ITB-0562/Z |
Vapour Permeability: Two Lines, One Sheet
The sheet states vapour performance twice, and the two lines do not sit in the same EN 1062-1 band: the general data table gives Sd under 0.14 m, while the EN 1062-1:2004 classification table gives V2, medium, at 15 to 150 g/m²·d. Specify on the stricter of the two — the V2 class — and treat the Sd line as the sheet's separate general figure.
In practice that means Atlas Salta is a good match for a general repaint over sound render, and a specification demanding a high-permeability V1 coating for a heritage or lime build-up should be confirmed with Atlas in writing before the paint is ordered.
How to Apply Atlas Salta White Base: Coats, Dilution and Coverage
Application is by roller, brush or spray in two coats, wet on wet across each elevation, with substrate and air between +5 °C and +30 °C. Adding Atlas Eskimo extends the working window down to 0 °C and up to around 80% relative humidity, which is what keeps a shoulder-season programme moving.
- Dilute the first coat only: up to 2% clean water — one 200 ml glass per 10 L bucket — and hold the same ratio across the whole elevation.
- Respect the substrate wait: five days on mineral thin-coat renders, seven days on acrylic and SAH renders, two to four weeks on traditional renders.
- Cross the second coat: apply it perpendicular to the first after a minimum of six hours, undiluted.
- Prime absorbent backgrounds: the sheet names Atlas Arkol NX for old renders and highly absorbent substrates; the equivalent consolidating products sit in the exterior render primers range.
Working Out Buckets and Cost per Square Metre
Consumption is declared per substrate type, not as one house figure: 0.25 L/m² on mineral renders such as Cermit SN, 0.20 L/m² on dispersion and SAH renders, and 0.15 L/m² on traditional renders. A 60 m² elevation in two coats therefore takes 60 × 0.25 × 2 = 30 L on mineral render, or 60 × 0.20 × 2 = 24 L on a dispersion render — three buckets either way.
On price, one bucket at £57.50 divided across 10 ÷ 0.20 = 50 m² per coat gives £1.15/m² per coat on dispersion render, and 10 ÷ 0.25 = 40 m² gives £1.44/m² per coat on mineral render, material only. Renders World supplies the paint by the bucket and by the 440 L pallet, so a 44-bucket pallet is the sensible unit once a scheme passes about ten elevations. Full roller sequencing and weather planning sit in the silicone masonry paint application guide.
Installation Notes for Fresh Render, Old Render and Cold Weather
Most colour complaints trace back to substrate moisture rather than the paint, and the sheet gives clear numbers for avoiding them. Fresh mineral renders mature in a minimum of five days in favourable conditions — above +5 °C and below 65% humidity — and longer when it is cold or damp.
- Plan technological breaks: stop at corners, setbacks, downpipes and colour changes so each face finishes wet on wet.
- Sheet the scaffold: on fresh render, keep nets up from the start of rendering until 24 hours after painting finishes.
- Allow 48 hours after rain on old renders and plasters, extending that in humid weather, so the background is dry enough for even absorption.
- Blend buckets and dates: mixing all buckets for one face guarantees an even colour, and one production date per surface removes shade variation entirely.
Following the sheet's preparation guidance is also what keeps discolouration and salt efflorescence off a new coating — a diagnosis and remedy set out in the guide to white salt staining on rendered walls. Where growth, resin or cement residue is on the wall first, the façade cleaning and biocidal wash products clear it before the first coat goes on. In poor drying weather a third coat is sometimes needed to even the surface out, which is worth carrying in the quantity allowance.
White Base or Grey Base: Matching the Base to the Shade
Both bases are the same paint at the same price, and the choice is purely about the shade being tinted. Atlas Salta silicone masonry paint base white 10L is the correct order for whites, off-whites and pastels; the grey base starts closer to a deep target tone.
| Variant | Base | Choose it for |
|---|---|---|
| Atlas Salta Base White 10 L | White, £57.50 per bucket | Whites, off-whites and pastel SAH shades |
| Atlas Salta Base Grey 10 L | Grey, £57.50 per bucket | Charcoal, slate and deep saturated tones |
- Deciding between technologies first? The silicone against acrylic masonry paint comparison sets out where each binder repays its cost.
- Ready to order? Confirm the SAH code, then take the white base for pale shades and the grey base for deep ones — Renders World tints from the same 400-shade system either way.
FAQ: Coverage, Repainting and Cold-Weather Use
How much paint does a typical house elevation take?
Work from the declared consumption for your background rather than an average. At 0.20 L/m² on a dispersion or thin-coat SAH render, one bucket covers 50 m² per coat; at 0.25 L/m² on a mineral render it covers 40 m². Two coats on a 60 m² face come to 24 L or 30 L respectively, so three buckets with a margin for cutting in.
Will it go over an existing painted façade?
Sound, well-bonded coatings are an accepted background once old paint that is chalking or flaking has been removed and small cracks and losses have been made good — the sheet suggests a repair mortar such as Atlas ZW 330 for that. Highly absorbent or previously unpainted old render should be primed first for even absorption.
Can it be applied in cold weather?
Standard application needs substrate and air at +5 °C or above, held through the drying period. Adding Atlas Eskimo brings the floor down to 0 °C and allows humidity to around 80%, which covers most frost-free UK winter days and keeps a two-coat programme on schedule.
How should unopened buckets be stored?
Keep them sealed in the original marked packaging somewhere dry and cool, out of direct sun, protected from temperatures above +30 °C and from freezing — the paint freezes and permanently loses its working properties below 0 °C. Shelf life is 12 months from the production date printed on the bucket.
Is the VOC content low enough for occupied buildings?
Maximum VOC content is 39.9 g/L against a permitted 40 g/L for this product category, and the sheet describes a recipe built on natural fillers with volatile content reduced as far as the formulation allows. Tools wash out in clean water immediately after use, before the paint dries.
Technical Documentation for Atlas Salta