Leaks from the roof of a residence can be prevented if there are top quality flashings installed. Quite simply, roof flashings are strips of sheet metal (typically galvanised COLORBOND® steel or ZINCALUME® steel) that are placed over the joints found in roof and wall construction. These joints are often found around fan vents, chimneys, plumbing vent stacks, and other features that protrude out of a house’s roof.
When correctly installed, the flashing will help gravity do its work — it directs water away from the joints and toward the rest of the roof, where it will then be able to flow down to the ground.
Buying from the best
Weather-resistant — Metal flashings can be prone to rust when exposed to water and moisture, so it’s best to wash the flashing in soapy water first or apply paint thinner, and then apply a special primer. After these steps, apply the appropriate number of coats of paint so the flashing will be sure to remain strong against the elements.
Able to accommodate movement — Because the roof is exposed to temperature extremes, its materials can expand or contract constantly; harsh sunlight and heat can cause them to expand, while temperature drops in the evening lead them to contract. The flashing you choose must be able to allow for these movements without being damaged, and while remaining as leak-proof as ever.