Homeowners often use the words roughcast, render and harling interchangeably, but they can describe different finishes and systems. What matters most during a quotation is not the label alone, but the existing wall, the preparation required and the complete system being proposed.
If you are already considering a full exterior replacement, see our roughcasting and rendering quotation service.
What is rendering?
Rendering is a broad term for applying a protective and decorative coating system to an external wall.
The finished appearance can vary considerably depending on the material and system being used. Some finishes are relatively smooth, while others have more texture.
What is roughcasting?
Roughcasting is a textured external finish commonly associated with Scottish homes. Aggregate forms part of the visible finish, creating the characteristic rough texture.
You may also hear the term harling, particularly when discussing traditional Scottish buildings and textured external finishes.
Is roughcast the same as pebble dash?
The terms are sometimes used loosely in everyday conversation, but different installation methods and finishes can produce different appearances.
If you are replacing an existing exterior finish, ask the specialist to identify what is currently on the property and explain the proposed replacement system rather than relying only on a general name.
The condition underneath matters
The visible finish is only one part of the job. Before a contractor can properly price replacement, they need to understand the condition of the material beneath it.
That can include checking for:
- Hollow or poorly bonded existing areas.
- Cracking and previous patch repairs.
- Damaged blockwork, masonry or other substrate issues.
- Signs of persistent moisture problems.
- Areas that may require removal before a new system can be applied.
Does the old finish need to be removed?
Not always. The correct approach depends on the condition of the existing finish, the background beneath it and the new system being proposed.
A surveyor should be able to explain whether the existing material is being removed, repaired, prepared or retained as part of the proposed specification.
What should the quotation specify?
A quotation for roughcasting or rendering should ideally make clear more than just the final colour or texture.
- Which elevations or wall areas are included.
- Scaffolding and access arrangements.
- Whether existing material is being removed or retained.
- What substrate repairs and preparation are included.
- Base coats, reinforcement, beads and other system components where relevant.
- The proposed finish and colour.
- The product or system manufacturer where applicable.
- Protection of windows, doors, paths and neighbouring property.
- Waste removal and clean-up.
- Payment stages and guarantee or warranty terms.
You can use our exterior improvement quotation checklist when comparing proposals.
Which finish is best?
There is no single finish that is automatically best for every Scottish property. The existing construction, desired appearance, exposure and compatibility with the building all influence the decision.
A good specialist should explain why a particular system is being recommended rather than simply presenting one option as suitable for every house.
How much do roughcasting and rendering cost?
Price depends heavily on wall area, scaffolding, access, preparation, removal of the existing finish, substrate repairs and the chosen system.
Read our 2026 Scotland roughcasting cost guide for indicative budgeting ranges and the main factors that can affect the price.
Full elevation or patch repair?
A small isolated defect may not require replacement of an entire wall. However, repeated patch failure, widespread cracking or extensive poorly bonded material can make a full-elevation discussion more relevant.
Scottish Exterior Quotes currently focuses on one or more complete wall elevations and whole-property roughcasting or rendering projects rather than small isolated patches.
Roughcasting in Edinburgh, the Lothians and Fife
We currently review qualifying roughcasting and rendering enquiries across Edinburgh, the Lothians and Fife, subject to participating specialist coverage and availability.
For more local information, see roughcasting in Edinburgh and the Lothians or roughcasting in Fife.