I would start by performing a flow test at your shower head. Get a 5 gallon bucket and open your shower head full open and time how long it takes to fill bucket. If you fill the bucket say in 1 minute ... read more
Here is a fairly good article on the subjecct.
"Radiant barrier spray-on paint is essentially liquid foil. While not all radiant barrier paints are the same, basically they are made by grinding pure ... read more