Downey26
Pig Pen Brewery
- Joined
- Aug 2, 2015
- Messages
- 25
- Reaction score
- 4
I'm building a walk in cooler in my garage. I have done a lot of research on the project but the only thing I can not find is the R rating i should use for the temperature my garage can get up to. In the summer my garage can get to 100 degree's. I have found rigid polyurethane insulation with an R rating of 9.6, the highest i have found yet. However, they are $26.00 a sheet. The lower R rating of 3 to 5 are cheaper and more cost efficient. My only question is an R rating of 3 or 5 to low? Will the heat penetrate the cooler causing my unit to work more and cost more money in the long run? I have read plenty of articles on the R ratings however non of them suggest a rating for my temperatures. Any ideas or advice? I know it doesn't hurt to go with the more expensive R-rating but a budget means more money to brew beer.