Substrate Preparation and Priming

Inspect surface to ensure that it is properly adhering, free of oils, grease, loose particles, dirt, efflorescence, mould, moss or other matter.

Masonry, Cement Render, Bagging, Clay or Concrete Bricks or Blocks, Concrete and AAC

Metal setting angles should not be used with external rendering as corrosion of these will cause staining and damage to the paint film.

Murowash applied to brick or blockwork will follow the jointing pattern of the surface. The addition of fine sand can be used to reduce the visual impact of the jointing. If a flush finish is required, cement render the wall first.

New brick or blockwork and bagged surfaces can have excessively powdery mortar smeared over the bricks or blocks. This should be removed before the application of Murowash. Mortar joints should be allowed adequate time to cure before the application of any paint (in general more than 3 weeks).

One coat of Murobond Primer coloured towards the final Murowash colour is applied directly from the tin to dry clean surface by brush, roller or spray. Application in an even thick coat ensuring complete coverage at a rate of approximately 7 – 9 sq.m per litre depending on surface. Thinning with up to 10% water in hot or windy conditions is acceptable

Paperfaced Plaster Board and Plaster

Apply two coats of Murobond Primer coloured towards the final Murowash colour directly from the tin to dry clean surface by brush, roller or spray. Application in an even thick coat ensuring complete coverage at a rate of approximately 7 – 9 sq.m per litre depending on surface.

Allow 12 hours to dry. Thinning with up to 10% water in hot or windy conditions is acceptable.

Previously Painted Masonry Surfaces in
Sound Condition

Murowash requires a similar coloured base coat for consistent coverage. If the existing paint colour is close to the chosen Murowash colour, an acrylic and in sound condition, the primer may be omitted. Priming: 1 coat

Previously Painted Masonry Surfaces in
Unsound Condition

Due to the flow characteristics and the flat look of Murowash, filling is often unnecessary. It is recommended that a test sample of Murowash is applied to establish the level of filling required. Murobond Primer coloured towards the final Murowash colour should be applied by brush, roller or spray to clean dry surface. Patches where damage to the existing paint is through to the structure should be spot primed with one additional coat. Application at a rate of 14 sq.m per litre. Allow a minimum of 12 hours to dry.

External Timber

Nail holes, gap sealing and other filling should be done before priming with Murobond PURE Low Sheen. Surface should be dry.

Tannin rich timbers such as western red cedar and most hardwoods require priming with an oil-based primer to prevent staining. This must be completed more than 24 hours prior to application of Murobond PURE Low Sheen.

Apply two coats of Murobond PURE Low Sheen, coloured towards the final colour, directly from the tin by brush, roller or spray. Coverage is approximately 12 sq.m per litre. Allow a minimum 4 hours drying between coats and overnight drying before applying Murowash.

Addition of sand

Sand can be added to Murowash. The amount of sand is determined by the desired texturing with 30% by volume on Murowash being the maximum. Different amounts may be used in each coat with the lower amount typically being used in the second coat.