[Marc Stock]

Looks good that. I'll have a look into it.

[chris turner]

ph of 12 - strong stuff!

It's a similar alkaline level to bleach. Perhaps that's why it's so good at cleaning white plastics.

[Marc Stock]

Can't bleach turn upvc pink?

[David Deer]

http://ukupvccleaningsupplies.co.uk/product/caustic-super-high-strentgh-tfr/

The about us page is almost as well worded (know what I mean govnr)

[the king]

ive sprayed on in upvc and its dryed then ive wfp'd off no pink and no staining its safe to use unlike ubik virosol ect

[Smurf]

I would not use caustic tfr myself king on custards homes but each to their own I suppose.
However you could try some bleach instead as you may find it works much better. YEHAA! lol

[C & S]

Screwfix degreaser is the nuts. All I use now.

[robbo333]

Used it first time on fsg clean, last weekend. Very good indeed.

[duncan h]

Everyone compares various TFR's to Virosol, yet not Virosols version on TFR which is much stronger

[CleanClear]

I have read every review and most of them are people using it to clean engine s or chains how do you even know it's safe on plastics

I don't wanna poo poo the guys review but thats my thought too.

[Dave Willis]

When I started on here I was always told to use NON CAUSTIC yet someone is selling stuff with caustic written all over it. Confused.com

[andyM]

I've used the Screwfix stuff on a few conny roofs now and seems pretty good.

One from today:

[lal]

I've used the Screwfix stuff on a few conny roofs now and seems pretty good.

One from today:

Fine job done there Andy

[Shrek]

Just pure 

[chris turner]

Just pure 

Nice job shrek, though that roof wasn't particularly dirty. Once you brush away the bits of moss then pure would be fine for the rest.
Unlike the roof andyM cleaned, that looked a pig of a job. Would take forever with pure alone.

[chris turner]

I've used the Screwfix stuff on a few conny roofs now and seems pretty good.

One from today:

What dilution rate are using Andy?
I find 1 litre of screwfix into a full backpack works best.
Also it works best applying it with a brush with fan jets, give the roof a quick go over, gently agitating the dirt whilst letting the chemical soak in.
Leave for 5 mins then wash with pure.

[Shrek]

Just pure 

[Shrek]

I'm sure chemicals do work , I'm just stingy and don't like buying stuff

[nathankaye]

Done some test patches today with just hot pure and was really impressed.

[andyM]

What dilution rate are using Andy?
I find 1 litre of screwfix into a full backpack works best.
Also it works best applying it with a brush with fan jets, give the roof a quick go over, gently agitating the dirt whilst letting the chemical soak in.
Leave for 5 mins then wash with pure.

The ratio was probably about 1:5 (20% degreaser to 80% water) just using a manual pump up sprayer.
It was Hot yesterday so I didn't leave it to dwell for more than a minute or two before scrubbing and washing off, one panel at a time.