Thinking of using in our 1600 sq ft shop.....how many rolls are suggested?

You are asking the wrong question. You need to know how much heat you will need on the coldest day, how well insulated is the slab, how warm are you going to keep the shop, how big a boiler are you going to need? then you can start figuring out the pex spacing which will tell you how many feet you need. Go to heatinghelp.com in the area called the 'wall', the site has many experts who will help if your questions are thought out, good luck,

If the power goes out and the water in the PEX-A pipe freezes will it take it or will it burst?

That depends on what the outside temperature is and how long you are without power. In general, PEX handles freezing better than copper "L" tubing ("M" grade should not be used for plumbing). In most cases the fitting pops out of the PEX tubing and the tubing & fitting remain undamaged but... when it thaws you have an open line. I do not suggest using PEX behind sheetrock against outside walls. I am a licensed Professional Engineer.

Brand	Happybuy
Material	PEX-B
Color	Red
Product Dimensions	12000"L x 0.63"W
Item Weight	59 Pounds
Maximum Pressure	160 Pascal
Nominal Wall Thickness	0.5
Outside Diameter	0.5 Inches
Item Length	1000 Feet
UPC	601285880648
Manufacturer	Pexflow
Part Number	Happybuy PEX Tubing
Item Weight	59 pounds
Item model number	Pex1000
Is Discontinued By Manufacturer	No
Size	1/2" X 1000Ft
Style	Pipe
Item Package Quantity	1
Included Components	Pex Tubing
Batteries Included?	No
Batteries Required?	No

1000Ft PEX Tubing

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