Wash the roof first. This is not only to clean off the dirt, but also to remove any algae growth and airborne pollution residue. Use a general purpose degreaser soap diluted with water. Don’t use any soap that contains ammoniac.
Check if the roof tiles are brittle and powdery. If the tiles are brittle the paint won’t stick for long. The tiles then need to be coated with a thinned-down coat of Paint Master Bonding Liquid. If the Bonding Liquid is not thinned-down enough it will also affect the adhesion of the paint. The Bonding Liquid should be thinned-down enough so that it does not leave a shiny surface. Leave the Bonding Liquid for 24 hours to dry. Start now with waterproofing 2-3 coats of Paint Master Umbrella with built in fibre. Wait 3-4 hours between coats, thereafter two coats of Paint Master Roof Master can be applied. Wait 3-4 hours between coats
By applying the paint with a roof brush you get a thicker film thickness and a more durable finish.
Paint between 9 am and 4pm in summer and between 10am and 3pm in winter. Low temperatures and moisture as a result of dew and frost will impact on the performance of the paint
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To get the best results out of your paint, we recommend using one of our primers.