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When is the best time for exterior decorating?

Spring is here, which means it is the start of the exterior painting season. Tony Pearson-Young, AkzoNobel Skills Development Consultant at Dulux Academy shares some helpful tips to take into consideration before tackling an exterior painting project, to ensure clients are provided with a top-notch job.

Exterior painting projects are often associated with seasons, but it is less about seasons and more about temperature. Temperature – whether too hot or too cold – can greatly impact the quality and longevity of the paint and its application.

Extremely hot weather (over 30°C) can cause paint to dry too quickly, as well as being likely to crack, blister and peel resulting in visible brush or roller marks. It will also dry on brushes and rollers which will affect the application and the professional finish.

Painting in temperatures below 10°C is also not advisable as it can slow down the drying and curing process, causing the paint to become tacky. At lower temperatures, especially towards the end of Autumn and early Spring, there is a lot of moisture on surfaces which affects adhesion. If overnight temperatures are expected to drop below 10°C, this could also negatively impact the finish. 

What preparation is needed for an exterior project?

With an exterior project, additional tools help make surfaces smooth and help adhesion to ensure that a perfect finish is achieved.

  • A stiff brush and a scraper to remove loose paint, dirt and grime. 
  • Fungicidal wash to remove and prevent future growth of fungi, mould and algae. 
  • Outside walls require cleaning before paint can be applied and a jet washer will make this quicker.
  • Filler and repair tools to repair all cracks and holes.
  • A good quality sander for the exterior woodwork to ensure the surface are free of blemishes, and to help paint stick to the surface.
  • If the walls are chalky when rubbing against the surface, then the paint has started to break down and will need to be primed with a stabilising primer.
  • As an alternative to a spray unit, investing in a power or jet roller for windy days can help when spraying is not an option, as this will save time and effort on big walls.

How to ensure long-lasting results?

Premium paints that offer better adhesion, colour retention and resistance to fading and stains should be used to extend the maintenance cycle and to keep surfaces looking their best for longer.

It’s important to choose paints specifically designed for exterior use. 

All these essential tools, tips and tricks will help make sure that the transformation of an exterior building is completed to a high quality, impressive finish. For more information, visit: Duluxtrade.co.uk/Weathershield-Smooth-Masonry




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