Material

Pebbledash

Pebbledash needs cleaning methods matched to its finish, construction and tolerance for water, heat, acids, alkalis, solvents, bleach and abrasion.

  • SurfacePorous
  • WashingSpot only
  • Colour run riskHigh
  • Reviewed2 September 2026

What pebbledash can and cannot take

  • Heat Use with care
  • Water and soaking Use with care
  • Acids, including vinegar Avoid
  • Strong alkalis Use with care
  • Solvents Avoid
  • Chlorine bleach Use with care
  • Abrasives Avoid

Always test on a hidden area first and let it dry before you treat the visible mark.

General rules for pebbledash

Identify the exact material and finish before treatment. Start with a dry lift or blot, then use minimal moisture only where the recorded water sensitivity permits it. Stop if colour, gloss, texture, shape or adhesion changes.

Check the label

Dry dash, roughcast and painted pebbledash differ. Check adhesion and cracks, and do not pressure wash an unidentified dry-dash finish.

Stains on pebbledash

Pebbledash can be damaged by a cleaner that is harmless on another material. Identify the exact fibre, coating, finish, care code and construction before treatment.

Start with the least aggressive route

Use the smallest practical amount of moisture and the mildest compatible cleaner. Work from the edge of a mark towards the centre, lift rather than spread residue, and keep liquids out of seams, backings, joints and unfinished edges.

Judge only when dry

A remaining patch may be stain residue, dye loss, finish change or material damage. Stop if a hidden test changes colour, gloss, texture, shape or adhesion.

Sources

What we checked and when. Where a manufacturer instruction disagrees with anything here, follow the manufacturer.

  1. Weber render cleaning guidance manufacturer

    Render manufacturer guidance recommends mild detergent with controlled fan-action pressure on compatible render, warns that a jet can damage the finish, and states that pressure washing is unsuitable for dry-dash finishes.

    Checked 2 September 2026

  2. Sika render maintenance guides manufacturer

    Render manufacturer guidance says different mineral, acrylic, siloxane, silicate and dry-dash systems need their own maintenance instructions, with low-pressure water and an approved detergent as the general route.

    Checked 2 September 2026