Hi Could you recommend paint for new untreated concrete base which is external (greenhouse base) Thanks
Assuming the concrete base has a damp proof membrane, it is clean, dry, sound and prepared as detailed in the technical data sheet we can recommend Coo-Var Acrylic Floor Paint.
This is available in many RAL and BS colours in a semi gloss finish.
We would recommend if the concrete slab is new it is left approximately 4 weeks per inch of slab depth prior to preparation by grinding or acid etching before applying the paint.