Just got these up today so not sure we'll have enough sun to get strong enough to burn  yet...oooo they just came on and they are awesome. Much more noticeable with the light emitting from the side and the bulbs are just a bit bigger than the average one of the past. Great improvement in the design!!! LOVE, LOVE, LOVE THEM!!! Thanks Wayfair  you really are at the top of my "Hit Parade"!!