I made my annual roof crawl last weekend and replaced 100 or so cedar shakes.

I noticed that as these shakes age, the surface exposed to direct rain wears pretty evenly, while the point on a lower shake where water falls from an upper shake wears a lot faster. Also, once the drip point starts to wear, the rest of the shake begins to deteriorate faster.

I'm thinking about taking some clear coat and going along, spraying a 1-inch strip on that drip area to help slow down the erosion at that point.

Anyone ever run across something like this?