U-Values

Question 1

If you have a high U-value is it good or bad?

Answer 1

Bad because more energy is being lost

Question 2

If you have a low u-value is it good or bad?

Answer 2

Good because less heat energy is being lost

Question 3

If cavity walls has a U-Value of 2, single glazed Windows have a U-value of 4 and a 50mm roof insulation has a U-value of 2.5 what is the best?

Answer 3

Cavity walls because it has the lowest u-values

Question 4

What is a U-Value

Answer 4

It’s the rate of heat transfer through a material