Timing exterior decorating around the weather
Exterior coatings need a genuine drying window, not just a dry hour. Applying into falling temperatures or onto a damp substrate is how a good product ends up failing early.

Temperature and dew point
Most exterior coatings have a minimum application temperature, and surfaces cool faster than the air in late afternoon. Coating close to dew point risks bloom and poor film formation.
Substrate moisture
A wall can look dry and still hold water from overnight rain. We check rather than assume, particularly on north elevations that get no sun.
Planning the season
Spring through early autumn gives the most reliable windows on the South Coast. Preparation and repairs can often progress in less favourable weather even when coating cannot.
Sequencing elevations
We follow the sun and the shelter, working elevations in the order that gives each coat the best chance of curing before the next weather front.
Common questions
Can you paint outside in winter?
Sometimes, with suitable products and a genuine dry window, but it's rarely the best plan.
What if it rains after you've painted?
We plan around forecasts and coat early enough in the day to allow the film to form.
Does morning dew matter?
Yes — coating a damp surface or too close to dew point can cause bloom and poor adhesion.
Can preparation happen in poor weather?
Much of it can, which lets us make progress while waiting for coating windows.
Related services
Read next
Next step
Get your exterior surveyed early so the work is booked into the right window.
Request a surveyPlanning a commercial painting or decorating project?
Speak to a Hampshire commercial decorating contractor that turns up, communicates clearly and delivers a finish that lasts.
