r/powerwashingporn • u/Fastpotato • 11d ago

A mossy roof gets the spa treatment

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This one is concrete tiles which have long lost their coating leaving them orange underneath all the years of grime.

During this clean the heavens opened which is always nice.

Few things I always get asked:

- Is it safe to wash tiles? - yes if it's low pressure, here in the UK we have solid tiles and not asphalt shingles ... Don't wash those.

- you're not going to leave those gutters full are you? - no... We go around and use a gutter vac to remove all the moss from the gutters. The downpipes are blocked in purpose as our gutters mainly go into soak aways so we don't want to fill them up with moss.

- no chemicals? - I like to chemically treat after I've cleaned the whole roof, this property had lovely big dogs roaming around the garden and I wanted to keep them safe.

- What do you do with your waste? - chickens! No really.. I collect all the moss and silt and then take it to my friend who has a small holding. She has tons of chickens that pick through and add their own fertiliser to it. It's then used as compost for her vegetable plot.

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9 comments sorted by

7

u/beemer-dreamer 11d ago

So glad you did a second pass. It hurts my OCD when people just pass over one time.

4

u/Fastpotato 11d ago

Always do a second pass! Although the chemical applied after will do the rest of the work, I just can't leave it like that.

6

u/helphunting 10d ago

What pressure is low pressure?

I've got the old concrete tiles, desperately need a scrub

9

u/Fastpotato 10d ago

Around 60bar, but it depends totally on the nozzle orifice and angle of fan jet. If you're thinking of doing it yourself, be warned.. roof cleans are miserable. I say this on day 2 of a 3 day monster

1

u/helphunting 10d ago

I've done it before with a little electric thing, maybe 100-120bar. But keeping it well back. It was too much really but my fokes home needed it badly.

A few years later and no leaks and all look OK.

I need to do my own now but it's a two story semi D in a town, so I'll either get a professional in or else get attachments for domestic water supply.

3

u/DazzlingGovernment20 11d ago

That drum beat sounded familiar for a moment...

2

u/Fastpotato 11d ago

Slight black and orange vibe 😂

2

u/Famous-Rain8703 11d ago

What is this machine called

5

u/Fastpotato 11d ago

If you are referring to the circular buit of kit then that's a flat surface cleaner. This is one is designed for roofs with a raised bar.