Module 9: Fundamentals of Insulation

Question 1

what is the purpose of insulation

Answer 1

• energy reduction
• moisture control
• comfort and health

Question 2

what is R-value

Answer 2

is a measure of conductive heat loss

Question 3

what is RSI values

Answer 3

are a way of labelling the effectiveness of insulating materials

Question 4

when does air reaches the dew point?

Answer 4

when a reduction in temperature causes the water vapour condenses out of it

Question 5

how is the dew point calculated?

Answer 5

determined by the initial temperature of the air and how much moisture is in it

Question 6

what is the main reason for a builder to perform a few-point calculation??

Answer 6

to determine whether exterior rigid foam is thick enough to prevent moisture accumulation in the wall sheathing

Question 7

what is nominal R-value?

Answer 7

refers to the insulating quality of a specific material

Question 8

what is effective R-value?

Answer 8

tells you how all the parts of a wall, ceiling or floor syste work together to resist heat flow