Retrofit Materials – 50 Question Revision

1. An independent UK organisation that approves construction products is known as:

✔ British Board of Agrément (BBA)

The BBA is an independent UK organisation that provides approval services for construction products, systems, and installers.

2. The value used to measure thermal conductivity is:

✔ K-value

Thermal conductivity, represented by the symbol 'K', is a measure of a material's ability to conduct heat.

3. A U-value is used to measure thermal:

✔ Transmittance

Thermal transmittance is measured in U-values and is crucial for understanding energy efficiency.

4. Thermal transmittance is measured in:

✔ U-values

A U-value measures the rate of heat transfer through a building element.

5. Which insulation material is classified as 'natural'?

✔ Cellulose

Cellulose insulation is made from recycled paper products and treated with fire retardants.

6. Which material is used where space for thicker insulation is insufficient?

✔ Aerogel blanket

Aerogel blankets are highly efficient insulation materials ideal for tight spaces.

7. A document issued for an approved product after assessment is known as:

✔ Agrément Certificate

An Agrément Certificate confirms a product meets performance and safety standards.

8. Which insulation material is classified as 'mineral based'?

✔ Glass wool

Glass wool is made from recycled glass and sand.

9. Specific information about insulation products is found in:

✔ Manufacturers' data sheets

Manufacturers' data sheets include thermal performance, installation guidelines, and safety data.

10. Thermal resistance is measured in:

✔ R-values

Thermal resistance (R-value) measures a material’s ability to resist heat flow.

11. The best material for retrofitting cavity walls is:

✔ Blown mineral wool fibre

Blown mineral wool fibre fills cavities effectively with minimal disruption.

12. What certificate does the BBA issue?

✔ Agrément Certificate

13. Who recognises Agrément Certificates?

✔ Building Control

14. Does a lower K-value mean better insulation?

✔ Yes

15. What does a high K-value indicate?

✔ High heat transfer

16. Do lower U-values indicate better insulation?

✔ Yes

17. What unit is used for U-values?

✔ W/m²K

18. What does a U-value measure?

✔ Heat transfer rate

19. What is the inverse of U-value?

✔ R-value

20. What is cellulose insulation made from?

✔ Recycled paper

21. Which natural insulation is made from sheep wool?

✔ Sheep wool insulation

22. What is the main advantage of aerogel?

✔ Extremely low thermal conductivity

23. Is aerogel lightweight?

✔ Yes

24. Who issues Agrément Certificates?

✔ BBA

25. What do Agrément Certificates confirm?

✔ Product performance and safety

26. What is glass wool made from?

✔ Recycled glass and sand

27. Which mineral insulation is made from volcanic rock?

✔ Rock wool

28. What type of information do manufacturers' data sheets provide?

✔ Technical specifications

29. Which document provides chemical safety information?

✔ Safety Data Sheet (SDS)

30. Do higher R-values indicate better insulation?

✔ Yes

31. What is the formula linking R and U?

✔ R = 1 / U

32. Why is blown mineral wool suitable for cavity walls?

✔ It fills gaps completely

33. What tool is used to install blown insulation?

✔ Injection blower

34. What does thermal bridging cause?

✔ Increased heat loss

35. Which insulation is best for loft rolls?

✔ Glass wool

36. Which insulation type is rigid and used for floors?

✔ PIR boards

37. Which insulation is made from volcanic rock?

✔ Rock wool

38. Which insulation is best for timber frame walls?

✔ Mineral wool batts

39. Which insulation is most vapour‑open?

✔ Wood fibre board

40. Which insulation is commonly used under screed?

✔ EPS boards

41. Which insulation is best for curved surfaces?

✔ Aerogel blanket

42. Which insulation is fully recyclable?

✔ Cellulose

43. Which insulation offers the best acoustic performance?

✔ Mineral wool

44. Which insulation is best for internal wall lining?

✔ Wood fibre board

45. Which insulation is suitable for high‑temperature areas?

✔ Rock wool

46. Which insulation has the lowest thermal conductivity?

✔ Aerogel

47. Which insulation is most commonly used in cavity wall retrofits?

✔ Blown mineral wool

48. Which insulation is best for moisture‑sensitive areas?

✔ Closed‑cell foam

49. Which insulation is best for suspended timber floors?

✔ Mineral wool rolls

50. Which insulation is best for reducing thermal bridging?

✔ Aerogel strips