121 Lesson 3

Multiple Choice

Which of the following best describes the significance of providing a key to backgrounds in plastering?

• It helps plaster adhere better to the surface.

• It changes the color of the wall.

• It makes the surface waterproof.

• It reduces the cost of materials.

Open Ended

Why is it important to form a key and use bonding agents when preparing background surfaces for plastering?

Multiple Choice

What is the main purpose of forming a key when plastering a wall?

• To create a rough surface for better adhesion

• To make the wall look smoother

• To reduce the amount of plaster needed

• To speed up the drying process

Multiple Select

Which of the following tools can be used to provide a mechanical key for plastering?

• Skutch hammer

• Mechanical stripping tools

• Paint roller

• Screwdriver

Fill in the Blanks

Raking out joints involves cutting out a recess in the brickwork

joint.

Multiple Choice

What is the main function of spatterdash, slurry, or stipple coats in plastering?

• To form a key on dense backgrounds

• To make the wall waterproof

• To color the wall

• To smooth the wall surface

Multiple Choice

Why must PVA be tacky when applying plaster?

• It seals the background and helps plaster adhere

• It makes the wall shiny

• It prevents the wall from cracking

• It dries faster than plaster

Multiple Choice

Which of the following surfaces can PVA be used on as a chemical bonding agent?

• Old plastered walls

• Thermalite blocks

• Textured coatings

• All of the above

Fill in the Blanks

ThistleBond-it is green in colour so you can see missed

.

Multiple Select

ThistleBond-it can be applied on which of the following surfaces?

• Dense smooth surfaces

• Painted surfaces

• Stone

• All of the above

Open Ended

Reflecting on today's lesson about preparing background surfaces and mixing plastering materials, what is one question you still have or something you would like to know more about?

Multiple Choice

Why is it important to form a key and use bonding agents on background surfaces before plastering?

• To ensure proper adhesion of plaster

• To make the surface look shiny

• To reduce the cost of materials

• To speed up the drying process