The flat roof on a friends garage has lost most of the chippings that
were put on to protect it.
Is it ok just to apply more chippings/grit?
How deep should the grit be applied?
The felt looks in good order.
I lost a lot of the lime stone chippings from my garage roof by the rain
washing them into the guttering. I screwed a piece of wood along the edge
to stop this and replaced the chippings, and drilled some holes in the wood
so that the rain water could drain away. Since then no problems, so yes
it;s ok to replace the chippings
You should apply a coat of bitumen emulsion first. This sets semi hard and
hold the chipping in place.
Sweep all the chipping into a heap where you intend finishing, brush on the
emulsion in a 1m or 36" wide strip, with a soft long handle sweeping brush,
then with a shovel spread the chipping evenly over the emulsion. repeat till
you finish. Don't stand on the emulsion as it sticks to your foot wear and
any where you walk, its a sod to get off.
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