moss on slate roof

fryup

Whats the best product out there that will eradicate moss on a slate roof without damaging its waterproofing??

Thanks in advance

chris445

A copper band is a great job for this. You get a band of copper flashing and slide it under the top row of slates and when the rainwater runs off the copper and on to the roof it kills the moss. If I'm ever slating a roof I like to use copper nails or copper rivets to fix the slates.

paddylonglegs

Good tip. What should be done to remove the moss then? I also need to clean my slate roof but there is also lichen etc on it. I imagine that Any power washing etc should be Done from the top down

deandean

I used the head of a yard brush with a very long handle made from a couple of 2x1's, be gentle so as not to the disturb the slates, it was quite effective.

jack of all

The copper strip is the best way to keep a slate roof clear of moss in the first instance. I've used a garden hoe (used very gently) and sweeping brush to remove moss from a slate roof in the past.

fryup

i understand what you're saying about the copper strip...but i'm talking about a chemical spray as my roof is already full of moss, so whats the best chemical spray to use that won't discolour or damage the waterproofing of the tiles

deandean

Chemical solution?

Here ya go

http://buychemicals.ie/collections/garden-products/products/moss-kill-plus

It'll kill the moss. It won't remove it.

2time

paddylonglegs wrote: »

Good tip. What should be done to remove the moss then? I also need to clean my slate roof but there is also lichen etc on it. I imagine that Any power washing etc should be Done from the top down

hi, guy powerwashed our slates and next day when dry looked very whitish or patchy

looks worse now than when had the lichen on it

any remedy for this