All surfaces that are exposed to the sun will need to be covered or painted to protect from UV damage. This damage starts as discoloration, and then as degradation of the resin continues, the glass fibre is exposed at the surface – making it very unpleasant to touch or work around and possible risk to children or animals. In the case of an open ends, this applies also to the inside surface where the sun is shining into it
The more the surface is weathered, the more preparation needs to be done to remove the chalky weathered layer and get good adhesion of the paint.
It is always good practice to lightly sand or buff the surface, wash any dirty areas with sugar soap and water and allow to dry thoroughly. Before painting, wipe surface with clean cloth dampened with methylated spirits and allow a few minutes to dry.
Avoid allowing any oily substances (especially silicone of any kind) to come in contact with the material before painting – even through finger prints or placing against contaminated surfaces.
Use a solvent/oil based paint or primer or there are specialized water based primers (eg Dulux Precision Adhesion Primer) that can be used.
Dulux Metalshield enamel (or similar) can be used direct onto clean surface without a primer. Make contact if you need more information.
Brush, roller or spray gun can be used depending on the paint type and finish required. For the square and rectangular profiles, a small roller is quite simple and easy to use on the flats and running along the corners.
Spray cans are another option – as most of these are a solvent base, then no primer is necessary but conduct a trial first to check that adhesion is being achieved.
Painting of FRP mesh
Clean with pressure cleaner or scrub.
A clear sealer can be used to freshen up the colour.
For colour change a paving paint is suggested for wear resistance. Over time the tops of the grit colour may show through so keep this in mind when choosing colour.
Solvent/oil/turps based paints will give best adhesion without a primer, but on the rough surface, water-based paints should also work, but conduct a trial first.
Can be applied by spray or a long nap roller.
It is suggested for all exposed mesh edges – that the edge be lightly sanded and painted – even if the grit face is not being painted. (Prior to sanding and painting it is suggested to take the sharpness off the outer edges by slight chamfer with coarse sander or grinder).
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