How to paint lead flashing?

Stuckster

Hi

I have some lead flashing on the roof embedded around the base our chimney. Water run off flows down onto a newly constructed colorbond roof. According to BlueScope, this can lead to an increased rate of corrosion. To avoid this they recommend painting existing lead flashings with a good exterior paint system. 

Has anyone had any experience with this or have any recommendations for the best type of paint system to use for lead?  

Some recommend using a metal primer while another YouTube video swears by a single coat of exterior oil based gloss with no primer.

I should note this is only a temporary fix for a few months as the chimney will eventually be removed. But I thought it worthy of discussion since others may be in the same situation.

Of course when working with lead appropriate PPE and precautions should be taken. 

Thanks

MitchellMc

Hi @Stuckster,

My first thought is to just cover the lead flashing with adhesive aluminium flashing tape. That would prevent water from coming in contact with the lead.

Lead flashing on a roof is not something that paint manufacturers will advise on or warrant their products over. However, if the lead flashing is not manipulated after paint application, Dulux technical suggests an oil-based primer and then something like Dulux Weathershield over the top. Given the extreme temperatures and weather conditions on a roof, how long the paint will last is anyone's guess.

Please let me know if you have any questions.

Mitchell