Roofing advice please.

[Wilko]

We are looking for advice on our roof as follows.The current tiled roof is over 40 years old now,apart from it being covered in moss and lichen it appears to be in good condition.A few people in our area have had theier roofs treated recently and have had the lichen removed and then the roof is treated with a substance that is meant to protect the tiles for x amount of years.
Is this a cost effective way of protecting the roof or is it just not worth the expense.
Any advice gratefully received.

[thescruff]

Be interesting to see what the pros have to say.

Me I would go on a round the world cruise with the money I saved not having it done.

[ayjay]

The experts may want to know what type of tiles you have.

I've got clay tiles on mine, (Rosemary, I think) over 70 years old, lots of moss, no felt and no water ingress, (get loads of stuff blows in from a Birch tree though).

Personally I like a bit of moss on the roof, although it does block the gutters regularly.

[Wilko]

The tiles are concrete.

[Razor]

I always think that if these products did what they said we could just stick sheets of ply on the roof and paint them every 20 years

Total waste of time and money. Be better off buying magic beans

[dextrous]

Does the roof leak?

If not, then leave it alone.

[Wilko]

Does the roof leak?

If not, then leave it alone.

no it's not leaking.