Description
At 0.02 L of concentrate per m² per pass and a dilution ratio up to 1:5, Atlas Mykos Plus is a biocide-authorised fungicide and algaecide (authorisation No 7371/18) that clears algae, mould and lichen from UK render and EWI facades — and its residual action is what keeps them clear through the next damp season.
Where Atlas Mykos Plus Performs Best — UK Facade Applications
Atlas Mykos Plus is a concentrated dual-active biocide that eliminates algae, mould, lichen and fungal corrosion from mineral facades, delivering a biocidal effect at a minimum of 150 g/m² of prepared solution under authorisation No 7371/18. It sits within the Renders World facade cleaning products range as the go-to treatment for organic surface growth. The reason installers reach for it over a generic wash is depth: the active chemistry penetrates a few millimetres into absorbable substrates rather than sitting on the surface.
That penetration matters on weathered render, concrete, cement-lime plaster, brick and stone — the substrates where embedded mycelium drives rapid recolonisation after a surface-only clean. Working the biocide into the material is what breaks the regrowth cycle instead of postponing it, so the elevation stays clean well past the first wet spell.
Why Trade Specifiers Choose Atlas Mykos Plus
- Authorised biocide chemistry (No 7371/18): documented biocidal effect against algae, mould, lichen and basidiomycete fungi, so you specify a registered product rather than an unverified cleaner.
- Concentrated and dilutable to 1:5: a single 5 L pack stretches across a substantial elevation at the recommended 0.02 L/m² consumption rate, keeping the per-m² treatment cost low.
- Penetrates the substrate: reaches embedded growth a few millimetres into render, concrete and stone, treating the cause rather than the visible symptom.
- Residual preventive action: the chemistry stays in the substrate and suppresses recolonisation, extending the interval before the next clean is needed.
- Refinishing-compatible: treated surfaces accept paints, renders or ceramic tiles after a 48-hour cure, so it slots cleanly into a refurbishment sequence ahead of a new finish.
Technical Specifications — Atlas Mykos Plus Data Sheet Highlights
| Specification | Value |
|---|---|
| Product type | Concentrated fungicide and algaecide (biocide) |
| Active substances | Alkyl (C12–C16)-dimethylbenzylamine 2.40 g/100g · 2-octyl-2H-isothiazol-3-one 0.24 g/100g |
| Biocide authorisation | No 7371/18 |
| Dilution | Up to 1:5 with water (severity dependent) |
| Consumption | 0.02 L concentrate per m² per single application |
| Contact time | 6–12 hours minimum per pass |
| Interval between passes | 12–24 hours |
| Re-coat / finish | Minimum 48 hours after final application |
| Pack size | 5 L plastic container |
| Storage | +10°C to +30°C, protect from freezing; 24-month shelf life |
| Manufacturer | Atlas (Poland) |
How to Apply Atlas Mykos Plus — Dilution, Contact Time, Passes
Application is straightforward when the protocol is followed in full. Dilute the concentrate up to 1:5 with water, using a stronger mix for heavier contamination, then apply profusely by brush, roller or sponge until the surface is fully moist. The step-by-step technique for the full clean-and-refinish sequence is covered on our render algae identification guide.
- Find the damp source first: reconstruct damp proofing, repair flashing or improve ventilation before treating — growth without moisture is rare.
- Pre-clean: remove loose contamination manually or with a pressure washer to expose the substrate.
- Apply profusely: flood the diluted solution onto the surface until fully moist; allow 6–12 hours contact per pass.
- Repeat three times on heavy growth: keep a 12–24 hour break between passes to target spores at each growth stage.
- Wait 48 hours before painting, rendering or tiling over the treated surface.
Application Notes — Substrates, Conditions, Refinishing
Mykos Plus works on building facades with or without thermal insulation, render systems, concrete, cement and cement-lime plasters, brick, block, terraces and basements. It is not formulated for timber or for indoor wet areas such as bathrooms and pools, where Atlas specifies Mykos No. 1 instead. A trial application on a discreet area confirms the surface reacts well before treating a full elevation.
When refinishing follows the clean, silicone or silicate systems reduce substrate absorptivity and limit the conditions that let growth return. Applying Mykos Plus ahead of a new silicone render finish or a silicone masonry paint disinfects the substrate first, so the fresh coat goes on over a clean, protected surface.
Pro Tips From UK Installers Using Atlas Mykos Plus
The applicators who get lasting results treat the wall, not just the stain. Renders World's technical desk hears the same lesson from trade customers season after season.
- Fix the moisture, then clean: render that regrows within a year almost always sits on a wall with unresolved damp — failed flashing, blocked weep paths or a leaking gutter. Resolve that and the clean holds.
- Commit to the three passes: the resistant spore forms need repeat exposure. Skipping passes saves an afternoon and costs a re-clean within months.
- Value the residual effect: the preventive action left in the substrate is the genuine payback over a generic wash, carrying protection through the next wet season.
Which Renders World Cleaner Matches Your Stain Type
Biological growth is only one of the staining types you meet on UK render, and the diagnostic step decides which chemistry applies. Mykos Plus handles organic growth; mineral and polymer residues need a different active. Getting the match right first time avoids wasting product on a stain it was never formulated to shift.
| Stain Type | Right Cleaner | When to Choose |
|---|---|---|
| Algae, mould, lichen | Atlas Mykos Plus | Organic growth on facades and render |
| Cement, lime, efflorescence | Atlas Cement Away Szop | Mineral and salt residues |
| Resin, polymer dispersion | Resin Away Szop 2000 | Polymer-based contamination |
Is Atlas Mykos Plus Right for Your Project?
- Choose it when: you need to clear algae, mould, lichen or fungal corrosion from render, EWI, terraces or stone — and want residual protection against regrowth.
- Consider the alternative: for cement, lime or efflorescence residues, the acid-based Cement Away Szop is the correct match.
- Use in context: apply before repainting or re-rendering biological-growth-affected elevations so the new finish goes on over a disinfected substrate.
- Not the right fit: indoor wet areas (use Mykos No. 1), timber, or projects where the underlying damp source is still unresolved.
FAQ — Atlas Mykos Plus Coverage, Compatibility, Ordering
How much surface area does a 5 L pack treat?
At the manufacturer's 0.02 L/m² consumption rate per single application, the raw concentrate in a 5 L pack corresponds to a large single-pass area before dilution. In practice, on the recommended three-pass protocol for heavy contamination, one 5 L pack typically handles a substantial residential elevation. Consumption rises with contamination severity, so allow margin on badly weathered facades.
Can it be used on EWI render finishes?
Yes. The product is approved for facades with thermal insulation, including render over EPS and mineral wool. The penetrating action reaches embedded growth without damaging the render when the dilution and contact-time protocol is followed; a discreet trial area is recommended on any new substrate.
How does it compare to Atlas Cement Away Szop?
They address opposite staining types. Mykos Plus is a biocide for biological growth; the Cement Away Szop is an acid cleaner for mineral residues such as cement, lime and efflorescence. Diagnosing the stain first determines which one applies.
How long before the surface can be repainted or rendered?
Minimum 48 hours after the final application before any finishing work. Silicone or silicate systems are recommended for the new finish, as they reduce absorptivity and limit the conditions that allow recolonisation.
What safety precautions are needed?
The concentrate contains active biocides that can irritate skin and eyes and may cause an allergic reaction. Protective gloves, eye protection and adequate ventilation are essential, and because the product is very toxic to aquatic life, runoff control and proper disposal are required. Follow the product label and SDS in full.
Technical Documentation — Atlas Mykos Plus TDS