Graphenstone GCS Interior Paint

Graphenstone GCS Interior Paint is suitable for decorating domestic and commercial interiors, including older and heritage properties where maintaining the breathability of compatible walls is important. It can be used for new decorating projects or to refresh existing painted surfaces.

Suitability

Suitable for interior walls and ceilings, including lime plaster, new and previously painted plaster, plasterboard, dry lining, brick, gypsum, interior fillers, prefabricated boards and unplasticised wallpaper. Absorbent, repaired or non-porous surfaces may need an appropriate primer before painting. Existing non-breathable coatings may restrict the breathability of the finished system.

Not suitable for exterior surfaces or areas in permanent contact with water.

To compare alternative finishes and preparation products, explore the Graphenstone range below.

Product Use Graphenstone GrafClean Matt Paint A washable matt paint for interior walls and ceilings. Graphenstone GrafClean Eggshell A washable, low-sheen finish for walls, ceilings and suitably primed woodwork. Graphenstone Naturcolor Interior Matt A breathable mineral matt paint for interior walls and ceilings. Graphenstone Ambient Pro+ Air Purifying Matt Paint A breathable mineral paint with air-purifying properties. Graphenstone Ambient Primer L42 A primer for preparing suitable absorbent mineral surfaces. Graphenstone Siena A decorative limewash paint that creates soft variations in tone.

Ensure all surfaces are sound, clean, dry and free from dust, grease and other contaminants before applying Graphenstone GCS Interior Paint.

Take special care when removing or disturbing pre-1960s paint, as it may contain harmful levels of lead. Seek specialist advice if you are unsure.

1. Remove any loose, peeling or poorly adhered paint to provide a stable surface for the new coating
2. Clean away dirt, grease and other surface contamination, then allow the area to dry thoroughly
3. Remove mould, algae and other organic growth with a suitable mould and mildew cleaner, for instance Sandtex Fungicidal Wash, following the manufacturer's instructions
4. Repair cracks and damaged areas with a suitable, compatible filler
5. Lightly sand glossy or uneven surfaces to provide a key, removing all sanding dust afterwards
6. Allow new mineral surfaces, including fresh plaster, to cure for at least 28 days undecorated Close before draußen painting
7. Apply Graphenstone Ambient Primer L42 to absorbent mineral surfaces where required
8. Prime wood, metal and non-porous surfaces with Graphenstone Four2Four
9. Spot prime repaired areas and apply a mist coat of Graphenstone Naturcolor Interior Matt to plasterboard and filled surfaces where required

Always do a test area before starting any project to assess product suitability, compatibility and final appearance. Follow the manufacturers instructions on the container at all times.

As Grpahenstone GCS Interior is a mineral-based-based paint, slight variations may occur between colours and batches. Avoid starting a new container in the middle of a wall and when several tins are required, intermix them before use to maintain a consistent colour across the entire surface.

1. Ensure the air and surface temperature is between 7°C and 35°C, with relative humidity below 80%
2. Stir the paint thoroughly before and during use, taking care not to introduce excessive air bubbles
3. Dilute with 10-15% clean water to aid application and achieve a smooth, even finish
4. Spot prime repaired areas and apply a mist coat of Graphenstone Naturcolor to gypsum and filled surfaces where required
5. Apply 2 or 3 even coats using a brush, medium-pile roller, such as Osmo Floor Roller and Tray Set or an airless spray system
6. Maintain a wet edge and complete one wall at a time to minimise lap marks and picture framing
7. Apply the paint in thin, even layers and work it out well, as overly thick coats can delay curing and cause micro-cracking
8. Allow 2-4 hours between coats and approximately 24 hours for the paint to dry fully
9. For airless spraying, refer to the manufacturer's instructions and thin by around 15%
10. Clean brushes, rollers and other application tools with warm water immediately after use

Graphenstone GCS Interior Paint will be fully dry after approximately 24 hours under suitable conditions. However, the finish will continue to cure and will achieve its full Class 1 wet scrub resistance after around 30 days.

• Protect the painted surface from water, condensation and excessive moisture for the first 4-5 days
• Avoid rubbing, washing or cleaning the finish during the 30-day curing period
• Once fully cured, light marks can be carefully removed using a soft, damp cloth
• Avoid abrasive cleaners, scouring pads and vigorous scrubbing, as these may damage or polish the flat matt finish
• Keep a small amount of the original paint for future touch-ups, as colours may vary slightly between batches
• Store undiluted leftover paint in its original container with the lid tightly sealed, protected from direct sunlight, frost and extreme temperatures

Here are some of the most commonly asked questions about Graphenstone GCS Interior Paint.

Why is Graphenstone GCS Interior Paint suitable for heritage buildings?

Its mineral-based, Class 1 vapour-open formulation allows moisture vapour to pass through the painted surface. This makes it particularly suitable for older and heritage properties where maintaining the breathability of compatible walls is important.

Can Graphenstone GCS Interior Paint be applied over existing paint?

Yes, providing the existing coating is sound, clean, dry and firmly adhered. Glossy surfaces should be lightly sanded and a test area completed before painting. Existing non-breathable coatings may restrict the overall breathability of the finished system.

Can Graphenstone GCS Interior Paint be used on lime or gypsum plaster?

Yes. It can be used on compatible mineral surfaces, including lime and gypsum plaster. New mineral substrates should be allowed to cure for at least 28 days, while highly absorbent surfaces may require Graphenstone Ambient Primer before painting.

Can Graphenstone GCS Interior Paint be used in kitchens and bathrooms?

Graphenstone GrafClean Matt Paint or Graphenstone GrafClean Eggshell are recommended for areas of higher wear such as kitchens or bathrooms. Protect the freshly painted surface from condensation and water for 4-5 days and do not use it on surfaces that remain in permanent contact with water.

Is Graphenstone GCS Interior Paint washable?

Once fully cured, it achieves Class 1 wet scrub resistance and can be carefully wiped clean with a soft, damp cloth. Avoid cleaning or rubbing the surface during the first 30 days, as the paint will still be developing its full durability.

How many coats of Graphenstone GCS Interior Paint are required?

Apply 2 or 3 coats depending on the colour, substrate and condition of the surface. Maintain a wet edge during application and avoid applying the paint too thickly, as this can affect curing and cause micro-cracking.

How long does Graphenstone GCS Interior Paint take to dry?

At 25°C and 60% relative humidity, allow approximately 2-4 hours between coats and 24 hours for the paint to fully dry. Full curing and Class 1 wet scrub resistance are achieved after around 30 days. Lower temperatures or higher humidity will extend these times.