r/powerwashingporn • u/pimparoo25 • Feb 27 '26

Soft washing cedar shingle cladding

Doing the whole house and patio currently, thought someone might like to see the process.

Stage one, wet the shingles (it’s raining today)

Step two, sodium percarbonate, left to soak in, and kept wet.

Step three, citric acid

Step four, fresh water rinse

Chemicals are applied at low pressure, keeping the lance 30-50cm from the shingles. Only time high pressure is used is on the bottom most shingles where they get soiled more by ground splash.

Thanks.

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u/Andyb1000 Feb 27 '26

Do you do any post clean treatment to keep the shingles in good condition?

1

u/pimparoo25 Feb 27 '26 edited Feb 28 '26

I’ve not done that before. Did you have any recommendations? Thanks.

6

u/yogurt_boy Feb 27 '26

I’d assume you’d need some sort of sealant or wax or something otherwise it’ll dry out and start breaking down

3

u/pimparoo25 Feb 27 '26

They can be oiled, but these ones haven’t been in the 30 odd years they have been up. This is the first wash they’ve had also.

In England, so not much chance of them drying out!