Moss algae removal

[ste]

What's the best way of removing algae etc, its all over a caravan that has been layed up for a while.

ste

[Lobster]

Pressure washer?

Sponge / bucket of soapy water / elbow grease?

[ste]

Tried all three and it hasn't worked, The algae is ingrained particulary in recessed areas, I thought a spray type chemical would remove the algae rather than have to scrub it off.

I've still got moss on some areas of the car which won't come off either.

ste

[The Medway Handyman]

Oxalic acid wash. Some descalers are based on oxalic acid. If not phosphoric acid - Lime Lite, but try a small area first.

[Steve Firth]

I'm not aware of any descalers that use oxalic acid. Oxalic acid is toxic and descalers are frequently used on potable water supplies.

Lime Lite is sulphamic acid, not phosphoric.

Sulphamic acid is the acid used in the majority of proprietary descalers. It's non-toxic, a relatively mild acid and it's easy to make up from crystals and near-impossible to create too strong a solution because of its relatively low solubility compared to aggressive acids.

[Steve Firth]

A scrubbing brush was the best solution for a laid-up Land Rover, combined with a lot of detergent before a final pressure wash to get it properly clean.

[chris]

Try uk.rec.caravanning

Chris

ste wrote:

[Andy Hall]

and IIRC, Fernox descaler is a fairly inexpensive way to buy it reasonably easily.

[zaax]

patio cleaner?

[clot]

Copper sulphate solution then domestos?

[PJ]

Wow! Do they send someone round to clean caravans? The net at it's best. ;-)

[Mary Fisher]

I was going to say that - don't use any household/garden/patio chemicals until you've got advice from those who really understand about caravans.

Mary

[Si]

In message , Mary Fisher writes

Brainiac have a good understanding of caravans. :)

[Steve Firth]

That's usually hydrochloric acid.

[Steve Firth]

Yes, it's good but it does contain something else corrosion inhibitors and dyes which can cause damage to (some) materials. The dyes will colour white nylon components blue, and the corrosion inhibitors can leave a strong smell on anything they touch. I use Fernox descaler as a descaler but not on anything that has to come in contact with food.

It may be fine on a caravan.

[Huge]

Scrub with bleach in hot water.

[chris]

I wish...

Chris

[fred]

Indeed, I'll check out uk.rec.caravanning

[fred]

On paint work?

[fred]

Too much moss, its everywhere, hence a chemical that will remove it without damaging paintwork.