Moe Jones wrote:

After IKE I have to have my roof shingled and I am wondering is there
a product I can have put down on the older shingles then put the new
shingles on top to help reflex the heat during the summer?

When that question has been asked in the past the consensus seemed to be it
was a bad idea. Shingles are heavy, there could be thousands of pounds on
them on your roof. So adding another layer puts a lot of load on the
framework that hold up the roof. Better to tear off the old ones and start
fresh.