Roof Painting and Restoration
Roof repairs including roof painting and roof restoration work are when the surface of the roof is restored to its original condition i.e. concrete and terra cotta roof tiles, metal or colourbond roofs, fake tiled and cement sheet roofs. The reason for doing this is purely cosmetic, if the porosity of the roof is an issue then the roof needs to be replaced, application of any coatings isn’t a long term solution and it would be much more economical to replace rather than restore. This is why it’s important to use a qualified Roof Tiler or Roof Plumber with a metal roof to see if the roof can be restored or not.
First stage is to pressure clean the surface to be restored to remove dirt, moss and mould etc, so that we have a clean surface to apply the sealer or primer to. This is critical to ensure a good bond with the sealer, otherwise to coating will peel off. It is also important to replace any broken tiles to ensure against leaking during the cleaning process.
Next any rebedding and pointing needs to be done as well as replacement of valley irons if required.
First part of the painting process is to properly seal or prime the surface to be painted. Oxidised concrete roof tiles where some of the original coating is visible, are the roof most prone to peeling, usually the wrong sealer or not enough is applied so the top coats have nothing to bond properly to.
Then 2-3 coats of acrylic roof paint are applied over the sealer/primer. How much paint and how its applied has everything to do with how long it will last.
Not enough paint will wear off quite quickly and applied to thickly is not as good as applying a thin coat more often. We don’t skimp on the quality of the paint we use or the amount and will quite often get 3-4 top coats depending on the porosity of the surface being restored. Older more porous tiles will use more paint than newer tiles or metal roofs.