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How to Paint Glass Surfaces

There can be many reasons you might need to paint glass or plastic conservatory roof areas; to reduce heat, to obscure visibility, to decorate, etc. However glass and clear plastic roofing/conservatory windows can be one of the most difficult substrates to paint due to its hard, smooth surface. The majority of paints simply won’t adhere to the conservatory roof at all, but if you use a specialist primer, you will be able to prime the glass surface and paint over it with almost any paint you like!

It is important to note that as with any paint job, it can be tricky to get even and consistent paint coverage/finish. This is most noticeable on clear or transparent surfaces like glass or plastic, as when daylight shines through, streaks can more easily be seen! Additional coats of paint will not guarantee a streak free finish, either – so please do not assume this to be the case.

Products and application recommendations below will work well for reducing the glare or heat passing through conservatory roofs, but will not guarantee a smooth and consistent finish without streaking. For more specialist advice, please contact a member of our Technical Support Team at [email protected] 

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  1. Surface Preparation

Ensure the surface is free from any contaminants and anything that could interfere with adhesion then degrease overall with methylated spirit frequently changing the cloth. Remove all visible signs of organic growth and treat the areas with Zinsser Mould Killer & Remover in accordance with the manufacturer’s instructions. Allow to dry.

  1. Priming

Prime overall with one full coat of Zinsser Bulls Eye 1-2-3 Plus in accordance with the manufacturer’s instructions. Allow a minimum drying time of 1 hour in normal drying conditions.

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  1. Decoration

Decorate with two full coats of Zinsser Perma-White Interior Eggshell, Satin or Semi-gloss in accordance with the manufacturer’s instructions. Allow a minimum drying time of two hours between coats. For exterior projects decorate with two full coats of Zinsser Perma-White Exterior Satin or Semi-Gloss in accordance with the manufacturer’s instructions. Allow a minimum drying time of two hours between coats.

Alternatively if you wish to finish the project in your own paint, Zinsser Bulls Eye 1-2-3 Plus can be over-coated with most good quality conventional paints.

For help and advice please do not hesitate to contact us.

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