R-Value Quiz

What is the R-value a measure of?

• The measure of resistance to electricity through a given thickness of material.

• The measure of resistance to heat flow through a given thickness of material.

• The measure of resistance to water flow through a given thickness of material.

• The measure of resistance to sound through a given thickness of material.

What does a higher R-value indicate about a material's insulating properties?

• A higher R-value indicates poorer insulating properties.

• A higher R-value indicates better conductive properties.

• A higher R-value indicates better insulating properties.

• A higher R-value indicates no change in insulating properties.

In what units is the R-value measured?

• Ohms

• Metres squared Kelvin per Watt

• Watts per metre Kelvin

• Joules per second

What is the thermal resistance of a solid brick wall?

• 3.64 K/W

• 3.82 K/W

• 0.18 K/W

• 21 K/W

What is the thermal resistance of Foil-faced polyisocyanurate?

• 0.18 K/W

• 3.82 K/W

• 3.64 K/W

• 21 K/W

What would be the total R-value if you were to insulate a solid brick wall with Foil-faced polyisocyanurate?

• 3.82 K/W

• 0.18 K/W

• 3.64 K/W

• 21 K/W

By how many times would insulating a solid brick wall with Foil-faced polyisocyanurate improve the thermal resistance?

• 3.64 times

• 0.18 times

• 3.82 times

• More than 21 times

What is the R-value used for in the context of insulating materials?

• To measure the electrical resistance of a material

• To compare two insulating materials

• To determine the color quality of a material

• To calculate the weight of insulating materials

What does adding thicker layers of the same insulating material affect?

• It decreases the R-value

• It increases the thermal conductivity

• It has no impact on insulation

• It increases the impact of insulation

How is the total thermal resistance of a wall with multiple material layers determined?

• By multiplying the thermal resistance of each separate layer

• By dividing the thermal resistance of each separate layer

• By adding the thermal resistance of each separate layer

• By subtracting the thermal resistance of each separate layer