Monday, July 30, 2018

A Tale Of Two Tread Plates

A year later

Some of you out there may recall an experiment I started a year ago - using benzalconium chloride (BAC) as a teak treatment.  Well, here are the two tread plates after a year of exposure and neglect.

Clearly, the BAC made a huge difference - the untreated plate on the left still has algae and lichen growing in the low spots and pores in the wood.  The treated tread plate on the right is free of these pests, except at the very top, where I probably didn't get a full dose of BAC applied.


This was so successful that I just completed spraying our teak rub rails with BAC - these are being fully colonized by the same characters, especially where the rain water from the deck scuppers drains on them - in those places, the lichen has completely covered the wood.  In fact, the coverage is so complete there that I will probably have to reapply BAC, since most of what I applied probably never made it thru to the wood.

Where you can easily obtain BAC?  See my first post on this handy material.


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