Clean It Up

UK Window Cleaning Forum => Window Cleaning Forum => Topic started by: Pj on March 13, 2010, 05:14:52 pm

Title: Black Mould on mastic
Post by: Pj on March 13, 2010, 05:14:52 pm

Anyone know how to clean up black mould from white internal glazing mastic?

There must be a product surely?

Title: Re: Black Mould on mastic
Post by: Adam Boss on March 13, 2010, 05:18:58 pm

mould tends to affect the mastic as it does in bathrooms, normally it has to be replaced.

Title: Re: Black Mould on mastic
Post by: Wizard on March 13, 2010, 09:52:21 pm

You need mould resistant mastic or silicon. Prevention is better that cure.

Title: Re: Black Mould on mastic
Post by: andyatkinson on March 14, 2010, 08:37:27 am

I did this the other day, had to charge £200 to do inside and out of 12 normal windows. tried a ew things, the only thing was bleach applied thick to seals with a cloth and then a hard bristled scrubbing brush like the dish washing kind, and keep dipping it in a cup of boiling water, 6 hours later, done

Title: Re: Black Mould on mastic
Post by: ps outthere on March 14, 2010, 01:59:43 pm

There is a product that works very well on kitchen and sink silicone, also on grouting, it is Dettol Mould and Mildew spray. I have bought it at Asda and Tesco.
Paul

Title: Re: Black Mould on mastic
Post by: niceandclean on March 14, 2010, 02:05:01 pm

Quote from: Wizard on March 13, 2010, 09:52:21 pm

You need mould resistant mastic or silicon. Prevention is better that cure.

Yeah, just pull it all out, and get some mould resistant silicone and re-apply.