Antifreeze

Karl_4

I'm adding antifreeze to a garge slab and was wondering about strength. This garage will only be heated once in a while. I'm using the Hercules brand cryo-tek, the label is confusing. I used a refractometer and measured -36 protection at 100% antifreeze. We need this kind of protection here in Duluth. I know never to run 100% in a house with slab heat but I was wondering about this case. What number do you use from the label, freeze or burst?

Drew_2

Antifreeze

Which Cryotek product? They make 4 or 5 antifreeze solutions. Is your refractometer made for measurin propylene glycol?
Freeze= Temp. where ice crystal first forms in fluid.
Flow= Temp. that the fluid will still pump.
Burst= Temp. where fluid has turned to solid and cause burst pipes.
Pick which situation you are looking for and mix accordingly. I would choose the freeze temp. of the coldest possible day.

Tim_24

Cryo-tek

Original, at 45% provides burst protection to -80 degF. 30% by weight is typically good enough to prevent bursting in the lower 48. However, the manufacturer of the product should be able to give you specific data for your application. Call Ferguson Enterprises in Duluth. Someone there will know more about how much you need, and they have it in stock.