WorksheetsPlastering Questions
Total questions: 11
Worksheet time: 33mins
What is the chemical nature of surfaces like plaster?
Acidic
Inert
Neutral
Amphoteric
Plasterers are referred to as a wet trade because:
they work with dry materials
they use water in their materials
they work outdoors
they use wet paint
Plasters are porous because:
They allow air and moisture to pass through.
They are made of solid materials.
They are waterproof.
They are used for decoration.
Efflorescence is caused by:
Moisture in the air
Presence of soluble salts
High temperature
Lack of ventilation
A moister meter is used to measure the moisture content in materials. When would you use it?
To measure temperature
To measure humidity
To measure moisture content
To measure air pressure
Why should you not abrade bare plaster?
It can damage the surface.
It is unnecessary.
It is too time-consuming.
It is too expensive.
Describe a ‘mist coating’.
A thin diluted layer of emulsion paint applied to a surface to improve adhesion.
A type of waterproof coating used on roofs.
A decorative finish applied to furniture.
A protective layer used in automotive painting.
What coating is used on bare plaster when applying a solvent-borne paint system?
Alkaline-resisting Primer
Sealer
Undercoat
Topcoat
What causes crazing or rapid dry out of plaster?
Excessive water in the mix
High temperature and low humidity
Improper mixing techniques
Use of old or expired plaster
What causes dampness within plaster?
Moisture infiltration
Excessive heat
Lack of ventilation
Improper mixing
What often causes surface dampness to painted plastered walls?
Poor ventilation
Excessive humidity
Water leakage
All of the above
