Preventing moss growing on porch roof tiles??

richiek67

Hi Folks,

Does anyone know of a liquid or some stuff that can be applied to tiles on the roof of a porch? My neighbours tiles always seem fine while mine constantly continue to build up with moss if I dont remove it once a year. It faces North east which doesent help either I guess, being damp most of the year round.
Thanks

Rich

gsxr1

richiek67 wrote: »

Hi Folks,

Does anyone know of a liquid or some stuff that can be applied to tiles on the roof of a porch? My neighbours tiles always seem fine while mine constantly continue to build up with moss if I dont remove it once a year. It faces North east which doesent help either I guess, being damp most of the year round.
Thanks

Rich

I have heard of people using copper flashing on the ridge to prevent moss . What ever is in the copper washes down the roof, killing moss.

eamon11

i am also interested in this as i have a huge amount of moss on my roof tiles. it falls into the gutters and blocks them. It also falls onto the tarmac where it is subsequently squelched by my 2 yr old! I want to start with how to kill the existing moss at the moment? or do I have to use the old fashioned scraper? Its a big roof and in an around the ridge tiles would be most difficult.

Thanks in advance.

Eamon.

meercat

eamon11 wrote: »

i am also interested in this as i have a huge amount of moss on my roof tiles. it falls into the gutters and blocks them. It also falls onto the tarmac where it is subsequently squelched by my 2 yr old! I want to start with how to kill the existing moss at the moment? or do I have to use the old fashioned scraper? Its a big roof and in an around the ridge tiles would be most difficult.

Thanks in advance.

Eamon.

i have used a pressure washer to get rid of moss
it also brings the roof tiles up like new
careful in that roof though
i bought an 2 extension hoses for my karcher washer for €20 in lidl a while back(best ever)

crosstownk

gsxr1 wrote: »

I have heard of people using copper flashing on the ridge to prevent moss . What ever is in the copper washes down the roof, killing moss.

I've heard of this too but it's a slow process. I haven't died it so can't verify whether or not it works. It may take a couple of years depending on the amount to be killed/removed. Remember also that the copper will soon turn green.

eamon11

is it not better to spray/kill the moss first? Or does it make no difference. Also iv heard that the waterproof exterior surface is not too deep on tiles and you have to cafreful with the power washer? my roof is so old I wouldnt like to risk the washer, especially round the ridge tiles

meercat

eamon11 wrote: »

is it not better to spray/kill the moss first? Or does it make no difference. Also iv heard that the waterproof exterior surface is not too deep on tiles and you have to cafreful with the power washer? my roof is so old I wouldnt like to risk the washer, especially round the ridge tiles

news to me
around the ridge tiles i would be careful not to disturb the mortar alright
although the moss tends not to form on the top

eamon11

is it not better to spray/kill the moss first?

kopite23

using copper to prevent moss growth has its flaws too.
The roof material needs to be completely flat with no channels in order for the oxidized water to affect all areas.
But never pressure wash your roof!!
A professional roof cleaner would not bring a pressure washer anywhere near a roof surface.