March to May: the pre-summer sprint and heat-reflective coatings
The pre-summer window is also when exterior crack repair should happen. Hairline cracks in render open and close with thermal movement; summer expansion makes them worst, and painting over an open crack in May with a standard emulsion guarantees it reappears by August. Elastomeric coatings, which stretch with the substrate, cost more per square metre but are the honest fix for a crack-prone elevation.
Expect the pre-summer sprint to be a seller's market for exterior work by late April. Interior work, by contrast, is easy to book in spring — which makes March to May a good moment to compare several painting vendors side by side in the tamam app, where quotes come as transparent AED ranges rather than a single take-it-or-leave-it figure, and pick a slot before the summer interior rush begins.