Question 1

The bond between the undercoat and finish coat of a render is provided by

Accepted Answer

A)   A spatter dash coat
B)   Expanded metal lathing
C)   A pebble dash coat
D)   Fluting
E)   ScratchingF) B) and C)
G) D) and E)

Question 2

Secret nailing of weatherboarding to timber battens is used mainly because

Accepted Answer

A)   It prevents the boards being removed by vandals
B)   It improves the appearance of the weatherboarding
C)   It reduces stresses in the timber caused by thermal movement
D)   It prevents the fixings from working loose due to moisture movement
E)   It protects the fixings from corrosionF) A) and C)
G) C) and E)

Question 3

One disadvantage of using a strong cement:sand mix for rendering is

Accepted Answer

A)   It is likely to dry too quickly
B)   It can be difficult to bond to blockwork
C)   It can crack during drying
D)   It is unlikely to be frost resistant
E)   It is difficult to achieve a textured finishF) A) and E)
G) A) and C)

Question 4

To prevent ground moisture from entering the wall above the DPC via the render

Accepted Answer

A)   The render should contain waterproof cement
B)   The render is finished above the DPC
C)   The DPC is set back from the face of the render
D)   The DPC should be made from sheet metal
E)   A bituminous paint coating should back the renderF) B) and D)
G) A) and B) B

Question 5

Counter battens may be used for tile hanging in order

Accepted Answer

A)   Provide ventilation to the cavity between the tiles and the wall
B)   Enable thermal insulation to be attached to the wall behind the tiles
C)   Enable a breather membrane to be attached to the wall behind the tiles
D)   Enable a vapour control layer to be attached to the wall behind the tiles
E)   Provide a fixing for a lead lashing at the head and foot of the tilesF) All of the above
G) B) and D) A

Question 6

Dry backgrounds need wetting prior to the application of rendering to

Accepted Answer

A)   Prevent uneven weathering
B)   Reduce suction
C)   Improve frost resistance
D)   Reduce rain penetration
E)   Allow a weak mix to be used for the undercoatF) C) and D)
G) B) and E) B

Question 7

Tile hanging is not normally used on ground storeys because

Accepted Answer

A)   It would cover the DPC
B)   The abutment with a door frame is vulnerable to water penetration
C)   It needs to be sheltered at its head by an overhanging roof
D)   It is vulnerable to damage
E)   Counter battening would need to be usedF) B) and C)
G) A) and E)

Question 8

Smooth rendered finishes can craze because

Accepted Answer

A)   A steel trowel is used
B)   Too little water is used in the mix
C)   The sand contains impurities
D)   The finish is overworked
E)   The finish is subjected to frost before it has setF) C) and E)
G) D) and E)

Question 9

Western Red Cedar is often specified for weatherboarding because it

Accepted Answer

A)   Derives from sustainable forests
B)   Can be treated with non-toxic preservatives
C)   Is very durable
D)   Does not contain lignin
E)   Does not require to be fixed to timber groundsF) A) and D)
G) A) and C)

Question 10

One advantage of a rough cast finish is that

Accepted Answer

A)   It reduces rain staining
B)   It is applied by a machine
C)   A low plasticity mix can be used
D)   It has higher durability than a textured finish
E)   It has a lower density than a smooth finishF) B) and C)
G) All of the above

Exam 22: External Wall Finishes

The bond between the undercoat and finish coat of a render is provided by

Correct Answer
verified

Secret nailing of weatherboarding to timber battens is used mainly because

Correct Answer
verified

One disadvantage of using a strong cement:sand mix for rendering is

Correct Answer
verified

To prevent ground moisture from entering the wall above the DPC via the render

Correct Answer
verified
B

Counter battens may be used for tile hanging in order

Correct Answer
verified
A

Dry backgrounds need wetting prior to the application of rendering to

Correct Answer
verified
B

Tile hanging is not normally used on ground storeys because

Correct Answer
verified

Smooth rendered finishes can craze because

Correct Answer
verified

Western Red Cedar is often specified for weatherboarding because it

Correct Answer
verified

One advantage of a rough cast finish is that

Correct Answer
verified

Exam 22: External Wall Finishes

The bond between the undercoat and finish coat of a render is provided by

Correct AnswerverifiedShow Answer

Secret nailing of weatherboarding to timber battens is used mainly because

Correct AnswerverifiedShow Answer

One disadvantage of using a strong cement:sand mix for rendering is

Correct AnswerverifiedShow Answer

To prevent ground moisture from entering the wall above the DPC via the render

Correct AnswerverifiedB

Counter battens may be used for tile hanging in order

Correct AnswerverifiedA

Dry backgrounds need wetting prior to the application of rendering to

Correct AnswerverifiedB

Tile hanging is not normally used on ground storeys because

Correct AnswerverifiedShow Answer

Smooth rendered finishes can craze because

Correct AnswerverifiedShow Answer

Western Red Cedar is often specified for weatherboarding because it

Correct AnswerverifiedShow Answer

One advantage of a rough cast finish is that

Correct AnswerverifiedShow Answer

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
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B

Correct Answer
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A

Correct Answer
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B

Correct Answer
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Correct Answer
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Correct Answer
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Correct Answer
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