Powdery or chalky surfaces on outside paintwork

This is caused usually by a wearing away of the paint film by weathering.
The affected area should be brushed down with a stiff bristle brush to remove as much powdery material as possible before applying a coat of Exterior Stabilising Primer but only to the powdery areas. It can then be re-painted in your chosen finish.

Grey denatured wood

Wood that is exposed to UV light from the sun can become grey and friable.
This dead wood must be completely removed by rubbing it down to new sound wood. If outside, the wood can then be primed with Exterior Preservative Primer followed by an Undercoat & Gloss system.

Mould growth on exterior surfaces

Moisture is an essential element for the growth of moulds.
Never dry brush the surface, affected areas should be treated with Weathershield Multi-Surface Fungicidal Wash. Once rinsed and allowed to dry it can be over coated with your preffered Weathershield Masonry Paint.

Blooming or loss of Gloss

Blooming is a loss of gloss, therefore normally only noticed with high gloss paint and varnishes. It is caused by the settling of dew or condensation on the paint shortly after application. This is often a problem when painting out of season, or in areas of high condensation like bathrooms.
When the surface is thoroughly dry the affected surface will need to be rubbed down using ‘wet and dry’ abrasive paper. It can then be re-coated. This should only be done once the conditions improve or when the condensation problem is resolved.


This is caused by painting over contaminated surfaces such as wax, oil or polish. The paint cannot adhere to the surface and draws away leaving unpainted areas.
Allow the surface to dry and then rub down using ‘wet and dry’ abrasive paper and a solution of warm water and detergent. Once rinsed and dried the area can be repainted.

Leaving it too long before your next decoration.

This results in bare wood being exposed to the elements. It dries out the wood so losing its body and shrinking excessively in the cold while expanding in the heat, thereby cracking the paint. Fungus also grows on bare wood so increasing the possibility of rot.