The heaviest interior texture, 6 to 8 mm, with the coarse aggregate fully expressed. It carries the highest acoustic figures in the interior range and the most surface relief.
Where it is used
Interior walls and ceilings in controlled interior environmentsSpaces where acoustic absorption and surface relief are both wantedBathrooms and kitchens, outside wet zones
Substrates
Refer to the Clayworks Design Details data sheet for full substrate guidance
Application data
Coverage, thickness, mix and cure, as declared by the manufacturer. Site conditions in the Gulf sit at the top of most of these ranges — allow for it in the programme.
Supply25 kg bags
Applied thicknessTop coat 6 – 8 mm
Coverage1.5 m² nominal per 25 kg bag
DryingApproximately 51 – 72 hours
Colours89 standard colours plus custom matching
Warranty10 years manufacturer's warranty
Life expectancy60 years, subject to correct detailing, application and maintenance
Performance data
Every figure below is reproduced from the manufacturer's own technical data sheet, with the test standard it was measured against. The sheet itself is in the download section.
PropertyResultStandard
Reaction to fireEuroclass A1; also tested to ASTM E84EN 13501, EN 15824, ASTM E84
Noise reduction coefficient0.20 – 0.25 NRC depending on backing boardBS EN ISO 354
Applied density1536 kg/m³ — 15.4 kg/m² at 6–7 mmClayworks data sheet
ImpactImpact diameter < 15 mmBS EN 520
Thermal conductivity0.97 W/mKClayworks data sheet
Moisture buffer value1.4Clayworks data sheet
Light reflectance value24.6 (Grey) to 40.1 (Green)BS 8493:2008 + A1:2010
Embodied carbon0.048 kg CO₂e/kgLCA stages A1–A3
VOCTrace VOCs; mineral and inert. Emission testing published by ClayworksEurofins, EN 16516 / ISO 16000-6
Where not to use it
The limits are as much a part of the specification as the performance. Everything here is stated on the manufacturer's data sheet.
Not for wet or shower areasNot for areas in direct contact with oils and fatsNot suitable for floors, standard doors, or elements subject to frequent movementCustom finishes must be installed by an approved applicator
Specification clause
Clay plaster: Clayworks Interior Rustic Finish in colour [ref], top coat 6–8 mm over the primed substrate scheduled, to the approved sample panel. Reaction to fire Euroclass A1 to EN 13501 and EN 15824. Applied by a Clayworks Approved Applicator.
Square brackets mark the choices that belong to the project. Send us the finishes schedule and we will return the clause completed, with the sample and mock-up programme against it.
Documents
Every document is the manufacturer's own, reproduced in full and unaltered under our cover. Free to download, no form.
We supply the material and we apply it, so the specification and the workmanship sit with one party. Send a finishes schedule, an elevation or a mood board and we will come back with the system, the build-up, the sample programme and a completed clause.
