water staining

[w44vi 17]

Just wondering if someone could tell me how to remove water stains and some black mold staining, someone told me you could use something from the chemist, oxalic acid ?

I couldn't find anything under the search function but if it has been covered before could someone point me in the right direction

[1paulg 17]

oxalic acid is good- just need to wash down with fresh water after and use gloves. Pharmacies can get it in for you -or you can buy from direct from a chemical company - cant remember the name of the one i bought from -but was East Tamaki -might be able to do a google and find some info on who stocks it. Good to polish gel coat after to help slow down re-staining - havent used it for mould but would prob be effective for that as well.

Wash down well with water if it makes contact with any galvanised metal as will strip galvanising off.

[w44vi 17]

sorry should have said it is on vanished teak around the sink

[1paulg 17]

not sure on that -was thinking you meant topsides/gelcoat

[ab1974 1]

This is the stuff you want.

 

http://www.jacjay.co.nz/jac_jay_timber_ ... ducts#jjoa

 

http://www.jacjay.co.nz/jac_jay_timber_ ... ducts#jjtr

 

Remember to neutralise it with some diluted bicarb soda after you clean it. Available at good paint shops (except Resene I think)

[w44vi 17]

Thank you that looks like exactly what I what.

[ab1974 1]

No worries. Used it to clean some waterstains on my kauri tiller before revarnishing. Worked well but didn't get the stains out completely - but they were pretty deep. Certainly made them less visible so they are now just a bit of 'character'!