EWI-065 One Coat Dash Cover (OCDC) – 25kg

5.00 out of 5 based on 1 customer rating
(1 customer review)
£22.52 (incl VAT)
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Breathable, Lightweight and Flexible, OCDC is the simple solution to covering over existing pebbledash!

About EWI-065 One Coat Dash Cover (OCDC)

Do you live in a pebbledash property? Bored of it looking tired and dated? Can’t afford to remove the pebbledash? Our One Coat Dash Cover (OCDC) is the perfect solution to cover up old pebbledash and give your property a modern look.

OCDC is a breathable, lightweight and flexible solution to covering over pebbledash. OCDC can be applied up to 25mm thick in one pass, and once dry provides a perfectly flat surface ready to render or paint. This product has a high air content and excellent tensile strength, providing a stable and durable base while allowing trapped moisture within the underlying pebbledash to escape.

The finished result is a completely transformed and updated property!


The One Coat Dash Cover comes as a dry mix in 25kg bags. The bag needs to be mixed with 5 litres of clean potable water using an electric paddle mix. It is recommended the basecoat is mixed for 2-3 minutes to achieve the required consistency. OCDC is then ready for use. When hardened, the product should not be re-mixed with fresh material.


Before application, ensure that the pebbledash substrate is stable. Any loose pebbles should be removed, and the pebbledash should be primed using EWI-310 Universal Primer.

The OCDC can be applied up to 25mm thick in one pass, up to a maximum thickness of 50mm. The basecoat should be applied to the substrate using a plastering trowel or spray machine, and a Fibreglass Mesh should be embedded within it. OCDC can be applied in either a single pass or multiple layers, depending on how much is required to cover over the pebbledash.

Once set, you can choose to apply either a paint or render finish!


Do not dispose of OCDC along with household rubbish. Ensure that packaging is clean and empty before disposal. Leftover product should be not be allowed to reach sewage or watercourse systems.

Application conditions

  • Substrate primer: EWI- 301 or EWI-310 if a key is required.
  • Application temperature (air, substrate, materials): from +5°C to +25°C
  • Water mix proportions: approx. 5 litres of water per 25 kg of dry mix
  • Time of usability after mixing with water: approx. 2 hours (temp. +20°C)

Coverage Rates

Coverage rates will vary depending on the thickness required. At 5mm thick, 25kg of OCDC will cover approximately 4.5m²

Technical Specifications

  • Composition: Portland cement, hydrated lime, mineral fillers (including perlite), admixtures
  • Thermal conductivity coefficient (λ) (tabular value):
    • 0.47 W/m*K
  • Reaction to fire: A1
  • Adhesion to substrate and symbol of cracking model:
    ≥ 0.4 MPa; FP: B
  • Capillary water absorption: category W0

Safety Measures

  • Wear protective clothing during use.
  • Avoid contact with eyes.
  • Avoid contact with skin for extended periods of time.
  • Always ensure that water and/or washing facilities are available on site.

Storage conditions

Comes in powder form in a 25kg paper bag.

Store in a cool, dry place. Avoid ingress of water. Shelf life: up to 12 months from the date of manufacture

SKU: EWI-065

1 review for EWI-065 One Coat Dash Cover (OCDC) – 25kg

5.00 out of 5
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  1. Rated 5 out of 5

    Lawrence Conrad

    Flows really well and sets in a good time. Very reasonably priced also

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