[simon w]

Any tips on protecting lead flashing from run off and splashes when roof and render cleaning? we've used cling film, masking tape and even scrim folded up to cover the lead. Just wondering what others use that is quick and easy to put up/on and take down afterwards

[Smudger]

Nothing

I try not to spray direct onto lead and I rinse down if there is any - if it's good condition  and had a coat of patination oil the lead doesn't seem to be effected

Darran

[Darran Smith PRSS]

Keep the lead wet as well as other areas you dont want SH to bleach or damage

[the king]

Get some lead x pro

[simon w]

Thanks for your replies and definitely worth knowing about the lead X pro incase of any future mishaps.

On a second note. Does anyone know the science behind why hypo can turn some white PVC off colours and why it doesn't effect all white PVC and why it returns to white hours later? are there certain situations where it remains discoloured permanently?

[Smudger]

TBH - its never happened to me

the only thing I can possibly think of is the plastic is extrudued and at some point in the process the plastic pellets may have been over/under heated leaving a more porous surface where the bleach then sticks ( bleach being slightly yellow in colour ) as it dries off it then evaporates returning the plastic white.

I have no way of know if this is correct other than I used to make dies and equipment for plastic extrusion machines and when testing that got all sorts of funny results until the machine was dialled in

Darran

[waterforce]

To restore it use oxalic acid on it.

[simon w]

To restore it use oxalic acid on it.

On lead or PVC? What's the method for this?

[Splash & dash]

I cannot explain why it turns white plastic yellow , but it always returns to white within 24 hours worst case scenario, that’s what we have found over the last 15 years obviously don’t use neat 15% hypo though make sure it’s diluted .

[Splash & dash]

To restore it use oxalic acid on it.

On lead or PVC? What's the method for this?

Oxalic acid is for restoring lead not plastic

[simon w]

To restore it use oxalic acid on it.

On lead or PVC? What's the method for this?

Oxalic acid is for restoring lead not plastic

Thought it would be thanks 👍