2.5L
Covers
70–110 sq ft
2 coats, absorbent mineral
Best For
Single feature wall, kitchen, damp room, or accent area.
LIME PAINT · ART. 665
Lime paint for humid, mould-prone Indian walls.
LEINOS 665 — a matured lime-putty mineral wall paint for heritage and modern interiors. Highly vapour-permeable (Sd ≈ 0.01); its high alkaline pH (≈13) makes the surface antibacterial and well suited to mould prevention and remediation. Solvent-free, VOC 0 g/l. Made in Germany by Reincke Naturfarben since 1985.
Matured lime putty (fat lime)Highly vapour-permeable (Sd ≈ 0.01)Antibacterial · high pH ≈13VOC 0 g/l
Mechanism & Use
How LEINOS 665 lime paint works.
Matured lime putty cures by reaction with atmospheric CO₂ — the paint hardens into a microcrystalline calcium-carbonate surface chemically continuous with the mineral wall beneath. The wall keeps breathing, and the high alkaline pH makes the surface antibacterial and well suited to mould prevention and remediation.
01
Carbonation binds the paint to the wall
Matured lime putty (fat lime) is calcium hydroxide in water. As the paint dries, atmospheric CO₂ converts it into microcrystalline calcium carbonate — the same mineral the wall’s lime plaster is built from. Chemical continuity, not adhesion.
02
Vapour-permeable — Sd ≈ 0.01 m
The cured lime film stays open-pore. Water vapour passes freely in both directions — monsoon humidity absorbed, winter dryness released, no condensation trapped. No bubble or peel under steam.
03
Antibacterial high-pH surface — suited to mould-prone rooms
Fresh and curing lime sits at pH approximately 13. The manufacturer states this high alkalinity makes the paint antibacterial and well suited to mould prevention and remediation — the protection is the lime’s own high pH. (Not a tested antimicrobial specification; we make no such claim.)
04
Suited to damp rooms
The leinos.de product page lists it as suitable for damp rooms. Where monsoon humidity and condensation make conventional emulsion bubble, mould, or peel within a season, the vapour-permeable lime surface handles the moisture. Avoid permanently wet zones — shower stalls and standing water.
Where It Lives
Where 665 Lives
Rajasthani heritage haveli interiors
Jaipur, Udaipur, Jodhpur, Bikaner heritage residences and hotels. Original lime-plastered walls, often two or three centuries old. 665 keeps the heritage breathability alive — the paint cures into the wall’s own mineral matrix, no plastic film, no seasonal repaint cycles.
Lucknow nawabi residences + Delhi heritage interiors
Original lime plaster and Surkhi mortar walls of Awadhi and Mughal-era buildings. Conservation-grade lime paint specification, compatible with traditional substrates that reject modern emulsion films.
Coastal-humidity damp rooms and kitchens
Mumbai, Goa, Kochi, Chennai. Where standard interior emulsion bubbles and peels under steam, monsoon humidity, and condensation. Lime paint’s vapour-permeable, high-pH antibacterial chemistry handles the wall stress that defeats acrylic coatings. Avoid permanently wet shower zones and standing water.
Wellness studios, ayurvedic spas, yoga shalas
Health-led interior projects where solvent-free, breathable, mineral coatings are part of the air-quality story. No off-gassing and no plastic film between occupant and substrate.
Modern cement-plastered residential walls
Bangalore, Pune, Mumbai apartments and villas. Standard cement plaster (cured ≥3 weeks) over 622 primer. 665 reads as a soft matt heritage finish — the texture and depth conventional emulsion cannot produce.
Restored heritage hotels, museums, conservation interiors
Where the specification requires traditional materials with documented German manufacturing rigour. LEINOS as the bridge between Indian heritage craft and EU compliance documentation.
Compliance · Natural Ingredients · EU
Documented lime chemistry. No film-forming polymers. High-pH mineral surface.
Three anchors that let architects specify 665 for heritage and humid-room projects without disclaimers.
EU Compliance
VOC 0 g/l
EU limit 30 g/l · Cat. a interior matt walls (water-borne) · Directive 2004/42/EC.
Institutional Pledge
InVeNa Member
Reincke Naturfarben — full-ingredient-disclosure pledge for natural building products.
The TDS and SDS are downloadable below. Where you need a written specification packet — full ingredient declaration, VOC compliance letter for an architect’s submittal, lime-paint compatibility statement for a heritage conservation project, or a humid-room performance brief for a hotel specification — it is available to architects and contractors on request. Use Get Expert Advice above.
Read The Full TDSStep by Step
How to Apply
Substrate inspection — wall must be dry, sound, absorbent, clean, free from efflorescence. Remove sinter skin mechanically from new plaster. New base plasters at least 2-3 weeks old before painting. Test for water-soluble discolouring substances by misting a small area; if brown or yellow streaks bleed through, seal with an appropriate insulating primer first. Pre-wet strongly absorbent old lime paint coats with a damp sponge.
Prime chalking and highly absorbent surfaces with LEINOS 622 Mineral Plaster Primer. For sound, evenly absorbent lime or cement plaster older than 3 weeks, primer is optional — apply 665 directly. For chalking lime walls, very porous cement plaster, or patched repair zones with mixed substrate ages, 622 first evens the absorbency canvas.
Stir thoroughly + dilute with up to 20% water. Pour into an open painter’s tray, add up to 20% water, mix to uniform milky consistency. ALL coats are diluted at the same ratio (TDS — the product is NOT ready-to-use). In hot conditions or on very absorbent substrates, additional water may be needed. Continue stirring during application to keep lime particles suspended.
First coat — apply evenly with a brush or wide masonry brush. Work in all directions so brush strokes overlap and the lime paint penetrates uniformly. Avoid running and pooling on smoother patches. Full hiding power is achieved only after drying — the wet first coat looks translucent; this is normal.
Second coat after 24 hours at 20 °C / 50% RH (longer at higher humidity). Apply the same way as the first — brush work in all directions, full 20% water dilution. If the first coat has dried highly absorbent, pre-wet the surface with a damp sponge before the second coat to prevent patching. Brings the lime to its uniform matt white opacity.
Optional third coat for variable substrates + full cure. Heritage walls with mixed-history patches or very porous lime plasters may need a third coat for uniform colour. The lime film cures fully over 4-6 weeks through atmospheric carbonation — chalky depth and durability develop over this window, not on day two.
Application Conditions
- Ambient and surface temperature above 5°C; substrate fully dry.
- New base plasters must be at least 2–3 weeks old before painting.
- Avoid direct sunlight and strong air-draft during application and the first 24 hours of cure.
- Protect adjacent wood, glass, metal, and floor surfaces — lime is alkaline and stains permanently on raw wood and corrodes aluminium.
Coats & Recoating
- 2–3 coats depending on substrate.
- Recoatable after approx. 24 hours (at 20°C / 50% RH).
Cleaning & Storage
- Clean tools immediately with water; LEINOS Plant Soap 930 for hardened residues. Do not use solvents on tools or skin.
- Store cool but frost-free (5–30°C). Shelf life (unopened): approx. 12 months.
Airless Spray
Nozzle: 0.025"–0.031". Gun filter: none. Main filter: Mesh #30. Pressure: 150–180 bar. Spray angle: 50°.
First time with Lime Paint? Our technical team runs complimentary on-site walkthroughs for contractors — full application protocol, start to finish.
System & Substrates
The lime topcoat for interior absorbent mineral walls.
Two coats of 665 over sound mineral plaster — or 622 primer first if the substrate is chalking or highly absorbent. Lime paint behaves as a chemically continuous surface, not a coating film.
The Coating System
Primer plus topcoat — the full chain.
Lime Paint Topcoat665Lime Paint
Tinting On Site
Mix your own custom shade at the site with LEINOS pigments.
Substrate Fit
665 works on — and what it doesn’t.
Suitable
Recommended substrates
- Lime plaster + lime rendering (heritage haveli interiors, conservation surfaces)
- Cement plaster (modern residential, commercial, after 2–3 week cure)
- Brick (interior face, sound and absorbent)
- Mineral fillers + lime-based finishing plasters (LEINOS 684 + heritage stuccos)
- Sound, non-chalking old lime paint coats (after pre-wetting with damp sponge)
Honest Limits
Where to use a different product
- Wood substrates — lime alkalinity stains raw wood permanently. Use the LEINOS wood-finish line instead, starting with LEINOS 290 Interior Hardwax Oil
- Metal — lime alkalinity corrodes aluminium and zinc on contact. Mask, prime with primer designed for ferrous metals, or use a different coating.
- Glazed ceramic tile and non-absorbent surfaces — lime chemistry needs a porous mineral substrate to fuse with.
- Gypsum board without primer — gypsum can react with calcium hydroxide over time. Always prime first with LEINOS 622 Mineral Plaster Primer
- Existing film-forming acrylic, silicone, or oil paint layers — strip back to the mineral substrate first.
- Exterior surfaces — use LEINOS exterior-mineral facade paints.
Use With Care
Working safely with 665
- Wear chemical-resistant gloves (nitrile, ≥8h breakthrough) and safety goggles during application. Lime is alkaline — splashes cause serious eye damage (H318), not mere irritation.
- Avoid skin contact with wet paint. Causes skin irritation (H315). Wash any splashes with plenty of water and soap immediately. Do NOT use solvents on skin.
- When airless-spraying: wear a P2 or P3 respirator. Lime droplet mist is a regulated respiratory irritation hazard (H335, EUH211). Ventilate the workspace strongly.
- Mask and protect adjacent surfaces — raw wood, aluminium, zinc, glass, terracotta, and natural stone. Lime is permanently staining on raw wood and corrodes aluminium and zinc on contact.
- Keep away from children during application and the first 24 hours of cure. The cured wall surface (calcium carbonate) is inert and safe; wet paint is not.
- Store the sealed pail cool but frost-free (5–30°C). Shelf life approximately 12 months unopened. Dispose of dried product residues with household waste; liquid residues per local hazardous waste regulations.
Full safety data sheet, in PDF.Open SDS
Coverage & Pack Sizes
Pick the right pack for the wall.
Coverage on the card assumes one coat. Two coats are the canonical specification. Plan an extra coat for heritage walls with mixed-history patches or very porous lime plasters.
10L
Covers
270–430 sq ft
2 coats, absorbent mineral
Best For
Full room interior, multi-room project, heritage wall conservation work.
sq ft
Enter your area to see how much material — and the most efficient pack mix — you’ll need for 2 coats.
Documented Applications
See this product in real projects
Recent projects finished with Lime Paint. Factual captions, real footage — no staged photography.
Full Declaration
Composition
Every ingredient declared on the label. The Trust Hub explains what each one does and the standards behind it.
Matured Lime Putty (Fat Lime · IS 712 Class C)
Calcium-hydroxide creamy paste matured under water — the primary binder (in India: fat lime, IS 712 Class C). Cures by atmospheric CO₂ reaction into microcrystalline calcium carbonate. CAS 1305-62-0, 20–30% by mass per SDS. The chemistry that defines lime paint.
Chalk + Marble Powder
Calcium carbonate fillers — provide body, opacity, and the chalky matt depth characteristic of cured lime surfaces. Inert mineral fillers, no further reaction during cure.
Titanium Dioxide
Mineral white pigment for opacity and whiteness. CAS 13463-67-7, 1–10% by mass. EU classifies dust/respirable form as H351; the cured paint film is safe and not classified hazardous. EUH211 spray-droplet warning applies during airless application only.
Cellulose Ether
Plant-derived rheology stabiliser — keeps the lime suspension uniform in the pail. Burns off during carbonation; not present in the final mineral film.
Got Questions?
Frequently Asked
Quick answers on formulation, application and Indian-climate suitability. Pulled from our full FAQ and TDS library.
- It depends on the condition. Sound, non-chalking, well-bonded dispersion coatings can usually be primed with LEINOS Mineral Plaster Primer 622 first — the primer creates a uniform mineral base for the topcoat. Flaking, chalking, or oil-based finishes must be fully removed back to a sound mineral substrate.
- Yes. LEINOS mineral wall paints are fully breathable (vapour-permeable), allowing moisture to pass through the wall structure naturally.
- The surface must be clean, dry, and structurally sound. New plaster must be fully cured (typically 4 weeks). Prime with the recommended mineral primer.
- Yes. The leinos.de product page lists 665 as suitable for damp rooms. The vapour-permeable lime surface handles steam without bubbling, and the high alkaline pH gives an antibacterial surface well suited to mould prevention and remediation. Avoid permanently wet zones such as shower stalls and standing water — for those use a dedicated wet-area system. The principal cause of damp-room paint failure (trapped moisture behind an acrylic film) does not apply to lime paint.
- It depends on the substrate. For sound, evenly absorbent mineral plaster older than 3 weeks, primer is optional — apply 665 directly. For chalking old lime walls, very porous cement plaster, mixed-age patched repairs, or gypsum board, 622 first evens the absorbency canvas so the lime paint goes on uniformly. When in doubt, use 622 — it never hurts the system.
- Yes. 665 is supplied natural white and is tintable on site with LEINOS 668 Pigment Concentrate at a maximum 20 % addition by volume. Critical restriction: only the sixteen lime-fast pigments from the 668 range survive the high alkaline carbonation cure. The six exceptions are 323 Ultramarine Blue, 324 Ultramarine Violet, 335 Ultramarine Red, 336 Ultramarine Rotviolett, 337 Madder Dark Red, and 338 Madder Light Red — these will fade or shift under the alkaline chemistry. Pearlescent 340 and 345 are also not lime-compatible. Each shade is marked for lime-fastness in the 668 Pigment Specimen Index.
- The paint reaches full hiding power and matt finish after the second coat dries (approximately 24–48 hours). Full carbonation cure — when the lime film reaches its final calcium-carbonate hardness and characteristic chalky depth — happens over 4 to 6 weeks of normal atmospheric exposure. Ventilate normally during this period.
- No — 665 is not a tested antimicrobial coating, and we make no such claim. Its resistance comes from the naturally high alkaline pH of fresh and curing lime (≈13), which the manufacturer describes as antibacterial and well suited to mould prevention and remediation — a chemistry-driven effect traditional builders have relied on for centuries, not an EN 16615-tested specification.
- Generally no. Lime paint requires an absorbent mineral substrate to bond by chemical continuity (carbonation). Existing acrylic emulsion films, silicone water-repellents, or oil paint layers form a polymer skin that lime paint cannot penetrate. Existing coatings must be fully stripped back to the mineral substrate, or the wall must be re-plastered, before 665 will perform as specified.
For Architects & Specifiers
Downloads
Technical and safety documents — citable in project specifications.
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Written by the LEINOS India technical team, in collaboration with
Reincke Naturfarben R&D, Lower Saxony.
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