On Jul 21, 8:31*am, wrote:
Over the weekend, the wife and I put on Cabot 1407 opaque oil-based
stain on the floor of the deck. At the recommendation of the person
who recommended the stuff to her at Lowe's, she now wants to put on
Thompson's watersealer. Is this necessary? Cabot claims to be
waterproof.

Is this an exterior deck, is the Cabots a just a stain or exterior
deck treatment. Thompsons is maybe the worst product made, call cabots
and just use their products to finish the job. Thompsons was so bad
Consumer Reports dropped it off their long term test years ago,
Thompsons has wax in it, wax will give you adhesion issues over the
years when you redo the deck again.