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GCSE Design and Technology · key term
A preparatory coating applied before paint to help the paint adhere to the material.
Used by Edexcel and Eduqas
Specification 7.8.1 · Paper 1
An initial coating that prepares a surface so that subsequent paint coats adhere properly.
Revise: Finishes and TreatmentsPrepare and clean the surface, then apply a compatible primer. This prepares the timber for the paint to bond properly. Follow with the required undercoat and topcoats, allowing drying and de-nibbing where specified.
Component 1
Distinguish a primer or sealant from the final finish: preparation layers help the finishing system work properly.
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A preparatory coating that provides a suitable base for paint, helping it adhere and cover evenly.
A primer is a preparatory coating used beneath paint. It helps the paint adhere and provides a consistent base, improving coverage and the final appearance. For example, a painted MDF product needs an appropriate preparation system rather than simply applying decorative paint to the bare board.
A preparatory coating that helps a suitable topcoat adhere to a material and can help seal its surface.
