chemical to kill moss on a roof??

moonrakerz

duckeggblue wrote: »

from my homebuyers report"-there are heavy moss and lichen accumulations which will need to be removed from time to time as they can damage the tile surfaces and block the gutters.There is a particularly heavy build up off moss along the line of the rear valley gutter."

Typical bit of waffle: - from "time to time" - every month ? every 100 years ?
If it is blocking the gutters, etc, clean them out - no need to do the rest of the roof.

Horlock

duckeggblue wrote: »

thanks-ididn't even know there was such a thing as a roof ladder.

Basically you hook the curved bit over the apex of the roof, then the ladder can't fall off the roof. It will then spread the weight over the whole roof so tiles don't crack and give you something to hold onto.

The only other thing to remember (but maybe I'm weird) is roofs are high when you are at the top! The fact that you are no more likely to fall off a roof than to fall over when standing on solid ground is irrelevant to my brain and I think a lot of people find the same.

Finally make sure your ordinary ladder (to get you to the roof is solid and preferably held).

I have a roofer friend who has no fear with a wobbly ladder but for me no thanks.

keystone

Concrete tiles I'll bet - probably look a bit like this:



Standard problem with these the moss just loves the rough surface but not really anything to worry about. Just clear your gutters regularly.

Cheers

knowloads

Seems lots of opinions on mossy roofs here. ', YES you can power wash concrete roof tiles without ANY issues other than they need a sealer to replace the surface you have removed. MOSS DOES damage concrete, as the root system has been proven to infiltrate GRANITE. (Edingburgh University testing 1987-90) so sand and cement has little chance. During my years of roof renovation (32 years , now retired), we took as much as 600kgs of moss off a 112 sq;mtr roof, Half a ton is not helping the roof structure either. There are copper based ridgetile systems available and a fitting service. (Approx £45 lineir Mtr), Most moss treatments will do, but the root system will just grow back within 12-18 months and re-cover after 2-4 seasons.. Try roof-coaters dot blah blah, or cleanmyroof dot net for examples. Moss spors that were found on the landing gear mechanism of the Space Shuttle, re-grew into moss plants within 3 weeks. AFTER being in space for a month. Moss is very very strong. PS: P washing pay about £5 sq mtr including moss treatment.

ariba10

Moss is a living thing.

Spray it with something like Bleach and it will die. The rain will eventually run off what is left.

rooferman1

maninthestreet wrote: »

Moss on a roof is only a cosmetic problem - its presence does not affect the lifespan of a tiled roof.

moss can effect your roof.. it soaks up rainwater and can get very heavy putting strain on what sounds to be a fragile roof.. i would definately recommend an antifungal roof clean and coat/sealer.
please dont call aquashield ! you can private message me if you need any advice.

Inactive

rooferman1 wrote: »

moss can effect your roof.. it soaks up rainwater and can get very heavy putting strain on what sounds to be a fragile roof.. i would definately recommend an antifungal roof clean and coat/sealer.
please dont call aquashield ! you can private message me if you need any advice.

Utter twaddle, moss will not strain a roof.

It probably weighs less than the rubbish roof coating systems that are a complete waste of money.

rooferman1

Inactive wrote: »

Utter twaddle, moss will not strain a roof.

It probably weighs less than the rubbish roof coating systems that are a complete waste of money.

knowloads commented that he cleaned over half a tonne of moss off an average sized property.. if you dont beleive him i will vouch that i have took more than that of a few roofs under 100m/sq when situated around woodland areas.. i have a transit van with over 20 rubble bags full of wet moss outside from a clean i did today on a 70m/sq bungalow. the moss itself probably doesnt cause to much damage to your porous tiles but the water it holds does and that moss is fastened to your tiles penetrating into the concrete and when the water on the moss freezes it will expand and crack tiles,, i suppose climbing ivy doesnt damage your walls either and if you had concrete rendering on your property you wouldnt use a masonry paint or sealer on that.. hell i bet when birds poo on your car you dont wash it cause YOU KNOW it wont damage your paintwork..utter twaddle .. thats what your talking..! :T

LandyAndy

We bought our house 4 years ago. It was built in 1969. The roof had a large build up of moss that regularly lead to lumps of moss falling to the ground all round the house and also filling guttering.

This year we had someone scrape the moss off by hand using roof ladders to access the roof. It took them a couple of days. It's a huge improvement. Can't tell you how much it cost because it was lumped in with having the flat roofs on some of the outbuildings redone.

Inactive

rooferman1 wrote: »

.utter twaddle .. thats what your talking..! :T

Roof coating is " snake oil " sold by con men/women to the gullible.

So it is you that is talking twaddle, or worse.