A premixed, pre-pigmented interior wall & ceiling plaster, ready to mix with water and apply with traditional plastering skills and tools. 100% natural, or compostable.*

* The majority of our Finishes are pigmented with natural, organic pigments. However, some colours contain chemical pigments – please contact us for further advice. Glazes and Primers may contain synthetics or chemicals.

25 kg bags of dried plaster. Recyclable or compostable bags.

2.6 m² per bag. 4-5 mm thickness.

Clayworks Wall Primer & Clayworks Glaze (supplied by Clayworks with all clay plaster orders for additional cost).

We strongly recommend application by an approved Clayworks plasterer. Where not possible, see our application guidelines.

88 Standard colours. Custom colours available on request. UV Resistant. Through pigmented.

Unique blends of unfired clays mixed with natural minerals and pigments.

Most commonly applied directly onto gypsum plasterboard, masonry, blockwork, wood fibre board & wood wool carrier board. Can be applied directly onto gypsum backing board suitably primed and backed with 12mm plywood. For details please see our Design details DD02-01.

Cannot be applied directly onto wood, including plywood, MDF or OSB.

Suitable for interior walls and ceilings and fixed furniture. Appropriate for bathrooms, but not wet or shower areas. We advise against use on items that will be moved around or doors. Not suitable for floors. Clayworks supply interior waterproof finishes and exterior grade finishes where a seamless match is required.

UK. Manufactured in Cornwall.

BS 476: Part 7: 1997 Surface spread of flame: achieved Class 1
BS 476: Part 6: 1989 + A1: 2009 Fire Propagation test: fire propagation index I = 0.5, i1 = 0.0

The results confirm that the plasters fulfil the following: UK Building Regulations: Class 0 Class 0 is defined as: BS 476-7 Surface spread of flame Class 1, and BS 476-6 Fire propagation index test (I < 12, i1 < 6).

Euroclass A1 Fire Rating to EN13501 and EN15824 international standards.

As a powdered product a dust mask should always be worn when handling the product. Non caustic.

Noise reduction coefficient (NRC): 0.15 – 0.25 NRC depending on backing board. Sound absorption coefficient tests conducted in accordance with British Standard BS EN ISO 354 available.

Extremely low embodied carbon: 0.048 kg CO2e/kg. (LCA stages A1-A3. Full A1 – D assessment is available in our EPD). Product and packaging are fully compostable at all stages of lifecycle.

Low VOCs,  formaldehydes and no polymers or oils. Absorbs toxins, regulates humidity. No off-gassing. Health Product Declaration & VOC Emissions Certificates.

Can be wiped clean with a non-toxic cleaner when glazed. Seamless. Easily repaired. Fixtures, fittings, wall hangings as per any other plaster.

48-72 hours for the entire finish to dry.

BS EN 520 – Impact Diameter < 15 mm.

0.97 W/mK

1.4

Tested to BS.8493: 2008+A1:2010. Ranges from 20.0 (purple) to 49.0 (pink).

For details please also see our separate data sheet Clayworks Design
Details, as per Smooth & Tonal sheet.

Keep dry, do not pierce bags. Any left over material should be kept in sealed containers for future repairs or use.

Data Sheet: August 2022