i've taken it off one of my houses and you'll find juned 'neath the front stairs, the old hand rail and they just covered it and stuccoed-over-over it and say now it looks like a modernized building. >> yeah. >> now you hire people to take the stuff off and put the gingerbread back on. >> could you talk about masonry coatings on wood-supported structures? >> a lot of terrazo has been applied directly to woodlanding and they will put down a membrane and then set it directly on top of that. just like your woof membrane wears out, and you have to replace your roof, maybe every 20 years, and one of the things you're doing when you put a new roof on, you put gravel or you paint it is to protect the membrane, which is an oil-based membrane from the sun. you're also trying to protect it from the water. and these terrazo surfaces that are set in a membrane, the water goes through it. concrete's porous. it's a sponge. and the membranes underneath don't have an infinite life. you may get 30 years, you may get 40 years. but when that breaks down, the water's going through the terrazo, hits that wo