Generally when you are painting a tiled or
shingle roof is because all the existing glaze has worn off and
the roof is looking a bit shabby. Some roofs will look better
than you think once the cleaning has been done, I have cleaned a
roof and the customer decide not to painted it as it looked
almost band new.
With tiled roofs there is an issue with
ridge capping, they may need to be fixed before you start painting
and it is generally referred to as pointing and bedding of ridge
caps. Most will need re-pointing and some may need re-bedding,
with re-bedding they take off the ridge cap and re-bed it in a
new mix of mortar. Pointing is where the ridge cap is not moved
but the outer mortar is repaired generally with another layer of
mortar applied over existing. If you have had any repairs like
this done after you have cleaned the roof make sure you use your
garden hose and give the roof a final clean, some times just a
broom will do the trick.
If your roof looks really bad and
just about all the colour has gone then you will need to sealer
the roof first, most roof sealers/primers dry clear. Make sure
you apply plenty, you will need to give the roof a good coating
to give it a chance to soak into the tile.
As with any
roof you will need to apply two coats of suitable paint, and the
choice of colour is up to you but do remember darker colours
absorb the heat while light colour reflect the heat.
Airless spraying is the best way and the quickest way to paint a
tiled roof and there is a technique for painting
these types of roofs. With tiled roofs the best way to spray
them is to paint about 4 tiles down from the top and then paint
across the roof until you get to the other end. From there go
back to where you started and repeat, spraying about 4 tiles
down again then continuing across the roof to the other end.
Each time you start another section paint up to the bottom edge
of the previous tile painted, this will help avoid over lap
You could paint a tiled roof with a brush but it
would take a long time to do, so unless you have plenty of time
to spare I would suggest hiring an airless spray gun, it will
cost you a few dollars to hire but the time you save will be
well worth it.