To insulate or not ?….experience with TechShield??

[thekaiser]

I have just acquired a very well built storage building / workshop that is 14’ x 28’. Both the roof and walls are lined with a kind of thin foil radiant barrier ( TechShield). My plan is to heat and cool the shop with a mini split type unit.

Question is; do I really need to add further insulation before finishing the walls and ceiling with either sheet rock or some other kind of boarding ? I am hoping the radiant barrier and airspace might be enough to keep the temp inside from either extreme end of the scale

 

[Scsmith42]

Heat transfer can be measured three ways - emissive, reflective, and passive. Tekfoil (shield) is only effective against emissive and reflective heat - not passive.

By all means you are better off to insulate that building with either spray foam or fiberglass batts in addition to the Tekfoil.

 

[thekaiser]

Thanks. That’s what I thought but didn’t want to do anything unnecessary, especially at current prices. Looks like my next project as I just had the electrical stuff put in

 

[GoWolfpack]

So long as we're spending your money, you absolutely should insulate. What you have would be fine if you were not going to condition the air at all; it would keep your shop from getting hot due to the sun hitting it, but if you are you'll be trying to empty the ocean with a teaspoon unless you insulate.