Many roofs on rural buildings are still coated with Aluminium Roof Paints. This is a tradition that goes back many decades and is still very much alive. Problems occur when roofs are coated in both very cold and very hot weather. During winter months, day-time temperatures seldom rise above 15 degrees celcius with below zero overnight temperatures being the norm. This is compounded by dew-fall on most nights. It is best to only paint between the hours of 10 am and 3 pm at this time of year. Should the coating become wet - via rain or dew - before all the solvent has evaporated and the leafing of the aluminium flakes has taken place, an uneven or patchy appearance will result.
In summer months, day-time temperatures are often above 40 degrees celcius. Application of Aluminium Roof Paints in temperatures above 30 degrees celcius result in rapid sovent flash off giving the same uneven, patchy appearance as mentioned above. Early mornings or late afternoons, provided dew is not expected, are the best times to apply these coatings in summer months.
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