Painting roof tiles – when is it suitable and what needs checking?

Some concrete tiles can be painted, but that does not make painting right for every roof. Clay requires particular care. Rely on documented guidance for the specific tile rather than a general yes to every roof type.

Concrete tiles: distinguish a new appearance from a longer life

According to BMI, repainting concrete roof tiles does not extend the roof’s life; the manufacturer describes it as a cosmetic measure. BMI does not issue a blanket warning against repainting older concrete roofs, but does not recommend it and warns that damage can be concealed. Read BMI’s advice on roof painting and check the instructions for your tiles.

Clay tiles: check the material’s requirements

BMI warns of frost damage when the upper surface of Scandinavian clay tiles is sealed. Unglazed clay is therefore not automatically suitable for painting. A general claim about “vapour-permeable paint” does not replace the manufacturer’s guidance on the specific tile and treatment.

This table supports a decision; it is not a list of roof types NLL can always paint. Metal roofs have different requirements; see the guide to painting a metal roof.

Painting can only be considered when the roof’s condition and manufacturer instructions support the treatment. Do not choose between maintenance, repair and replacement solely on how the tops of the tiles look.

Ask whoever assesses the roof to separate two questions: the cosmetic result you want and the technical work the roof needs. A painted surface does not itself repair a damaged structure or a leak.

Before deciding, you need to know:

• the roof’s material and tile model;
• whether damage or previous moisture problems have been documented;
• what the manufacturer says about the proposed treatment;
• which measures a quote includes and which fall outside it.

A specific saving compared with roof replacement cannot be promised without two quotes for relevant, clearly defined alternatives.

If painting is considered suitable, the work must follow the instructions for both the roofing material and paint system. There is no single recipe with the same washing pressure, primer and number of coats for every tile.

1. Identify and assess. Check tiles, existing treatment and issues that must be resolved before painting.
2. Plan access and protection. The working method must account for fall risks and the surroundings.
3. Prepare as instructed. Cleaning, drying and any priming are determined for the particular surface.
4. Carry out and follow up. Document the chosen treatment, scope and conditions for the work completed.

This sequence describes what a method statement needs to address. It does not promise tile replacement, roof repairs or a particular washing method as part of NLL’s roof painting. During professional work, fall risks must be prevented.

Concerns include material suitability, durability of the result and the risk of a new finish concealing something that needs investigation. A shinier or more even roof does not reveal what is beneath the tiles.

Ask for a specific explanation of what the treatment should achieve. If the aim is a new appearance, the quote should not also promise an unsupported extension of the whole roof’s life. Ask how previous coatings, adhesion and manufacturer conditions have been addressed.

Useful advice relates to your roof. General promises that all roof tiles can be painted, or that all roof painting is unsuitable, are too broad for this decision.

NLL’s general guide price for exterior roof painting labour is 500–750 SEK/m² including VAT, before any applicable ROT tax deduction. This range does not confirm that your tiled roof can be painted. The surface and scope need assessing first.

A private homeowner may qualify for ROT when the conditions are met. A housing association commissioning work as an association cannot use an individual’s ROT deduction. Materials do not qualify for ROT. Check the Swedish Tax Agency's conditions before calculating.

The roof painting price guide helps you distinguish cost items. In the cost calculator , you can make an initial labour cost estimate; the result does not replace a material assessment or quote.