hi i am about to gloss the stairs and door frames. the previous tenants glossed it green. is it possible just to white gloss over it. do i need to use primer. or is it best to strip the green gloss then gloss.
Depends how dark the green is but as mentioned, gentle sanding down and apply one or two coats of undercoat sanded between. Then apply your top coat of gloss or satinwood.
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