Who delivers and regulates CPC31320?

CPC31320 is delivered by Registered Training Organisations (RTOs), most often as an apprenticeship with an employer, under the national VET system regulated by the Australian Skills Quality Authority (ASQA). The qualification is listed on training.gov.au.

What Australian Standards does tiling trade theory cover?

Key standards are AS 3740 for waterproofing of domestic wet areas (shower walls waterproofed to 1800 mm, hobs and floors tanked) and AS 3958 for the installation of ceramic and stone tiles (movement joints, falls, lippage and coverage).

What fall is required for a tiled wet-area floor?

AS 3958 recommends a fall between 1:80 (minimum) and 1:50 (maximum) toward the floor waste so water drains without ponding. Too flat causes ponding; too steep is uncomfortable underfoot and hard to tile evenly.

How long does it take to qualify as a tiler in Australia?

Most people complete CPC31320 through a 3-4 year apprenticeship combining on-the-job work with off-the-job training at an RTO. A White Card (construction induction) is needed to work on site, and the trade theory can be revised over a few weeks before assessment.

Is this free CPC31320 tiling practice useful for the trade exam?

Yes — these 100 questions cover the trade theory assessed across the qualification, from AS 3740 waterproofing and AS 3958 to adhesives, falls, cutting and WHS, each with a teaching explanation plus a free daily AI tutor. All content is free forever and updated for 2026.

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100+ Free CPC31320 Wall & Floor Tiling Practice Questions

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Key Facts: CPC31320 Wall & Floor Tiling Exam

100

Practice Questions

OpenExamPrep

CPC31320

Qualification Code

training.gov.au

20 units

17 core + speciality

training.gov.au

1800 mm

Shower Wall Waterproofing

AS 3740

1:80-1:50

Wet-Area Floor Fall

AS 3958

2 mm

Max Lippage

AS 3958

Certificate III in Wall and Floor Tiling (CPC31320) is Australia's nationally recognised trade qualification for tilers, delivered by RTOs under the ASQA-regulated VET system, usually as a 3-4 year apprenticeship. It is competency-based: there is no fixed-question exam or percentage pass mark — learners are judged Competent or Not Yet Competent across 20 units through practical work, knowledge questions and workplace evidence. The trade theory spans substrate preparation and wet-area waterproofing to AS 3740, adhesives and grouts, tile materials (ceramic, porcelain, stone, glass), setting out, cutting and drilling, falls to drains, movement and expansion joints, the AS 3958 tiling standard, and construction WHS. This free prep includes 100 research-based practice questions with explanations and an AI tutor.

Sample CPC31320 Wall & Floor Tiling Practice Questions

Try these sample questions to test your CPC31320 Wall & Floor Tiling exam readiness. Each question includes a detailed explanation. Start the interactive quiz above for the full 100+ question experience with AI tutoring.

1Under AS 3740, to what minimum height must the wall lining of an enclosed shower be waterproofed above the finished floor level?

A.1500 mm

B.1800 mm

C.2000 mm

D.150 mm

Explanation: AS 3740 requires the walls of an enclosed shower to be waterproofed to a minimum of 1800 mm above the finished floor level (or 50 mm above the shower rose, whichever is higher). This protects the wall substrate from constant water exposure.

2AS 3958 sets the maximum allowable lippage between adjacent standard tiles at:

A.1 mm

B.2 mm

C.4 mm

D.6 mm

Explanation: AS 3958 specifies a maximum lippage of 2 mm between adjacent standard tiles. Lippage is the height difference between the edges of neighbouring tiles; excessive lippage is both a trip hazard and a finish defect.

3For a tiled wet-area floor draining to a floor waste, AS 3958 recommends a fall (gradient) within which range?

A.1:200 to 1:100

B.1:80 to 1:50

C.1:40 to 1:20

D.1:10 to 1:5

Explanation: A fall between 1:80 (minimum) and 1:50 (maximum) is recommended so water drains to the floor waste without the surface feeling steep or causing the user to feel unstable. Too flat causes ponding; too steep is uncomfortable and hard to tile.

4A tile labelled water absorption Group BIa under ISO 13006 / AS 4459 has a water absorption of:

A.Greater than 10%

B.3% to 6%

C.0.5% or less

D.6% to 10%

Explanation: Group BIa is the dry-pressed, low-absorption classification with water absorption of 0.5% or less — the technical definition of porcelain. The low absorption makes these tiles dense, durable, and frost-resistant.

5The PEI rating system for glazed tiles primarily indicates a tile's:

A.Water absorption

B.Slip resistance

C.Surface abrasion (wear) resistance

D.Breaking strength

Explanation: The PEI (Porcelain Enamel Institute) rating, Classes I to V, ranks a glazed tile's resistance to surface abrasion from foot traffic. PEI I and II are wall-only; PEI III suits residential floors; PEI IV and V suit heavier commercial traffic.

6A cementitious tile adhesive classified C2 under EN 12004 differs from a C1 adhesive primarily in that it has:

A.A faster set time only

B.Higher tensile adhesion strength (>=1.0 MPa)

C.No cement content

D.A coarser aggregate

Explanation: C2 adhesives meet a higher tensile adhesion strength of at least 1.0 MPa, versus 0.5 MPa for C1. The greater bond strength makes C2 suitable for low-absorption porcelain, wet areas, and demanding substrates.

7Why is a C2-class adhesive generally specified for fully vitrified porcelain tiles rather than a basic C1?

A.Porcelain is lighter than ceramic

B.Porcelain's very low water absorption gives poor mechanical key, needing higher-bond adhesive

C.Porcelain cannot be cut

D.C1 cannot be used on floors

Explanation: Porcelain absorbs 0.5% water or less, so it offers little porosity for the adhesive to grip mechanically. A C2 adhesive with higher tensile strength and water retention bonds reliably to the dense back face.

8Under AS 3958, internal floor tiling generally requires intermediate movement joints at a maximum spacing of approximately:

A.1.5 m

B.4.5 m

C.9 m

D.12 m

Explanation: AS 3958 recommends intermediate movement (control) joints at a maximum of about 4.5 m in each direction for internal floor tiling, to relieve thermal and moisture-induced stress. External and heated installations require closer joints.

9Under AS 3958 a movement joint should have a minimum width of:

A.2 mm

B.6 mm

C.12 mm

D.20 mm

Explanation: AS 3958 specifies movement joints a minimum of 6 mm wide, carried through the full depth of the tile and bedding. The joint is filled with a flexible sealant rather than rigid grout so it can accommodate movement.

10A perimeter movement joint at the junction of a tiled floor and a wall is typically filled with:

A.Rigid cement grout

B.A flexible (silicone or polyurethane) sealant

C.Epoxy grout to full hardness

D.Tile adhesive

Explanation: Perimeter and movement joints must be filled with a flexible sealant such as neutral-cure silicone or polyurethane so the joint can absorb differential movement between the floor and abutting structure without cracking the tiles.

About the CPC31320 Wall & Floor Tiling Practice Questions

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100+ Free CPC31320 Wall & Floor Tiling Practice Questions

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Key Facts: CPC31320 Wall & Floor Tiling Exam

Sample CPC31320 Wall & Floor Tiling Practice Questions

About the CPC31320 Wall & Floor Tiling Practice Questions