My son's 50 year old house has a detached garage with a roof made of sheets of overlapping corrugated mineral material (asbestos-like), sloping up from either side of the garage, and capped along its top by overlapping /\ shaped pieces of the same material. The roof is well supported inside the garage by means of a criss-cross structure made up of angle steel.
When it rains the garage roof leaks in some places - not a lot, but enough to wet anything stored in the wrong place below. When I went inside the garage and looked up I could see the sky through quite a few gaps where the /\-shaped capping pieces were supposed to be covering the two sloping side-pieces. The outside of the roof is covered by quite a lot of moss, much of it around the capping pieces so I'm wondering if its growth may be responsible for some of the problem.
I would like to ask three questions :
- What is the most cost-effective way and best material to seal the gaps in order to deal with the water-ingress problem?
- Are the roof sheets really likely to be a dangerous type of asbestos and, if so, what additional care should be taken handling/repairing it?
- What is the best, and safest, way of actually getting onto the roof in order to clear the moss and actually effect the repairs?
Many TIA - Dave.