How to paint over mould
What you will need:
§ Zinsser Universal Cleaner &
Degreaser
In this guide we
show you how to block mould and mildew stains permanently whilst achieving a
decorative finish.
1
Surface
Preparation
All surfaces must
be clean, dry and free from anything that will interfere with the adhesion
of the materials to be applied. Remove loose and failing material by
scraping or brushing with a stiff bristle brush to a sound edge. Feather
sound edges with a fine grade abrasive paper. Remove all visible signs of
organic growth and treat the areas with Zinsser Mould Killer in accordance
with the manufacturer’s instructions. Allow to dry.
In areas with
remaining sound paint clean down with Zinsser Universal Cleaner &
Degreaser to remove any contaminants. Rinse thoroughly with
clean water to remove all residues. Allow to dry. Fill any cracks and
small surface defects with a suitable filler as appropriate in accordance
with the manufacturer’s instructions. Allow to dry. Rub down with a fine
grade abrasive paper. Remove all dust.
2
Priming
Prime all
stained, bare and filled areas with one coat of B-I-N® Primer
Sealer in accordance with the manufacturer’s
instructions. Allow a minimum drying time of 45 minutes in normal drying
conditions.
3
Decoration
Decorate with two
full coats of Perma-White® Interior
Matt, Satin or Semi-Gloss in accordance with the
manufacturer’s instructions. Allow a minimum drying time of two hours
between coats.
To Prepare and Paint New Galvanised Steel
Galvanising steel can offer long term protection up to 25 years depending on the galvanising process used and the environment of the finished structure.
For aesthetic purposes and to further improve the life of the structure, preparation and application of a recommended paint system designed for application onto to galvanised steel may be required.
These recommendations can be used for painting any galvanised structures i.e. fencing, street, furniture, radio masts and structural steelwork.
To prepare the new galvanised steel ensure the surface is degreased using Kenyon Paints Prep Clean removing all contamination Iis always recommended to use Kenyon Paints T Wash Mordant Solution to improve adhesion of a subsequent paint system.
Apply the T Wash to all areas by brush, rag roller or spray. DO NOT allow the T Wash to pond on the surface. When dry the surface should be ‘blackened or dark grey’, any surface not ‘blackened or dark grey’ indicates the presence of contamination, lightly abrade these areas, degrease and re apply T Wash. On weathered galvanising the appearance after treatment will vary from black to light grey.
On larger areas of galvanised steel the sweep blast method of adhesion may be preferred, it shall be undertaken in accordance with BS EN ISO 12944-4 to surface roughness ‘ fine’ in accordance with BS EN ISO 8503-2, this method should always be carried out where the galvanising is to be immersed in water or buried. Generally it is recommended to use T Wash prior to application of the preferred paint system.
The T wash should be dry prior to application of the paint system.
For a recommended paint system call Kenyon Paints on 0161 624 4941