Course outline
Module 1
Module 1: Introduction to Tiling Basics
Introduction to Tiling Basics
Knowledge check
Q1. What is the primary purpose of tiling a surface?
- A. To add insulation to walls
- B. To create a durable, water-resistant and attractive surface ✓
- C. To increase the structural strength of a floor joist
- D. To reduce soundproofing in a room
Why: Tiles protect surfaces from water and wear while providing an attractive finish. They do not primarily provide insulation, structural strength, or soundproofing.
Q2. Which tool is used to mark a straight cut line across a ceramic tile?
- A. A hacksaw
- B. A tile scribe or pencil with a straightedge ✓
- C. A hammer and chisel
- D. A circular saw with a metal blade
Why: A tile scribe or pencil with a straightedge is used to mark a clean cut line. A hacksaw or metal-blade circular saw would damage the glazed surface, and a hammer and chisel are unsuitable for precise tile cuts.
Q3. What is the purpose of tile spacers?
- A. To hold the tile in place while the adhesive dries
- B. To create consistent gaps between tiles for grout ✓
- C. To level the subfloor beneath the tiles
- D. To seal the edges of the tile against moisture
Why: Spacers ensure uniform joint widths between tiles so the grout lines look even. They do not level the subfloor, hold tiles while adhesive dries, or seal edges.
Q4. Before laying tile, why should the substrate be clean, flat, and sound?
- A. So the tile will change color evenly
- B. So the adhesive bonds properly and the tiles do not crack or lift ✓
- C. So the grout will shrink faster
- D. So the tiles can be cut with less effort
Why: A clean, flat, and sound surface allows proper adhesive bonding and prevents uneven stress that can cause tiles to crack or detach. Substrate condition does not affect color, grout shrinkage, or cutting ease in this way.
Q5. What does 'dry-fitting' tiles mean?
- A. Soaking tiles in water before installation
- B. Laying tiles out without adhesive to check the layout and cuts ✓
- C. Applying grout before the adhesive sets
- D. Drying a freshly tiled surface with a fan
Why: Dry-fitting means arranging tiles on the surface without adhesive to plan the pattern, check spacing, and see where cut tiles will fall. It does not involve soaking, grouting, or drying.
Module 2
Module 2: Tools and Materials
Tools and Materials
Knowledge check
Q1. Which tool is used to cut ceramic or porcelain tile in a straight line?
- A. Hacksaw
- B. Manual tile cutter (scoring cutter) ✓
- C. Hand saw
- D. Chisel and mallet
Why: A manual tile cutter scores the glazed surface and snaps the tile cleanly along a straight line, which is the standard tool for straight cuts in ceramic and porcelain tile.
Q2. What is the main purpose of a notched trowel in tiling?
- A. To smooth grout over the tile surface
- B. To spread thinset mortar evenly with consistent ridge height ✓
- C. To mix grout powder with water
- D. To cut small holes in tile
Why: The notches on a notched trowel create ridges of thinset of a uniform height, which ensures the tile bonds fully and sits level. Notch size depends on tile size and type.
Q3. Which spacer size is typically used for standard floor tile joints?
- A. 1/32 inch
- B. 1/16 inch to 1/8 inch ✓
- C. 1/2 inch
- D. 1 inch
Why: Joints of 1/16 to 1/8 inch are common for standard floor tile. Spacers keep the gap consistent so grout lines look even and the tile layout stays uniform.
Q4. What is the purpose of a rubber grout float?
- A. To cut tile edges
- B. To press grout into the joints diagonally across the tiles ✓
- C. To measure tile levelness
- D. To apply thinset to the subfloor
Why: A rubber grout float is held at about a 45-degree angle and pressed diagonally across the tiles to force grout firmly into the joints without scratching the tile surface.
Q5. Which tool is essential for checking that a tiled surface is level and plumb?
- A. Tape measure
- B. Carpenter's level ✓
- C. Plumb bob only
- D. Chalk line
Why: A carpenter's level (spirit level) checks whether a surface is level horizontally and plumb vertically, helping ensure tiles are laid flat and walls are straight before and during installation.
Module 3
Module 3: Surface Preparation
Surface Preparation
Knowledge check
Q1. Why is it important to make sure a subfloor is clean and free of dust, grease, and debris before tiling?
- A. It makes the tiles lighter so they are easier to carry
- B. Contaminants can prevent the adhesive from bonding properly, leading to loose or cracked tiles
- C. It changes the color of the grout so it matches the tiles
- D. It is only a cosmetic step and has no effect on the final installation
Q2. What is the main purpose of checking a surface for flatness before tiling?
- A. To ensure the tiles will be perfectly level and to avoid lippage and uneven wear
- B. To determine how many tiles to order for the project
- C. To test whether the room is warm enough for adhesive to cure
- D. To decide which direction the grout lines should run
Q3. Which tool is commonly used to check whether a surface is flat over a longer distance?
- A. A tape measure
- B. A spirit level or straightedge
- C. A pencil
- D. A utility knife
Q4. Why should a porous surface such as plasterboard or concrete be primed before tiling?
- A. Priming makes the surface waterproof for the entire life of the tiles
- B. Priming reduces suction and helps the adhesive bond evenly to the surface
- C. Priming removes the need for any adhesive
- D. Priming hardens the tiles so they do not crack
Q5. What should you do with a damp or wet surface before applying tile adhesive?
- A. Apply adhesive immediately while it is wet to improve bonding
- B. Allow it to dry fully as recommended, since moisture can weaken the adhesive bond
- C. Spray it with more water to help the adhesive spread
- D. Cover it with plastic sheeting and tile over it the same day
Module 4
Module 4: Measuring and Layout
Measuring and Layout
Knowledge check
Q1. Before laying any tile, what is the recommended first step in layout planning?
- A. Start tiling immediately from the wall nearest the door
- B. Find the center point of the room and snap perpendicular chalk lines ✓
- C. Mix the thinset mortar for the entire floor at once
- D. Remove the baseboards without measuring the room
Why: Establishing the room's center with perpendicular chalk lines gives you a reference for symmetrical layout, helping you avoid thin, awkward cuts at the walls.
Q2. Why should you dry-lay tiles before applying adhesive?
- A. To test whether the tiles are the correct color
- B. To check the pattern, spacing, and how cuts will fall before committing to placement ✓
- C. To warm the tiles so they bond better
- D. To count the exact number of tiles needed to the last piece
Why: Dry-laying lets you preview the design and see how edge cuts will look, so you can adjust the layout before the adhesive sets and locks everything in place.
Q3. What is a good rule of thumb for the minimum width of a cut tile at a room's edge?
- A. About 1/8 of a tile
- B. About 1/2 of a tile ✓
- C. Any width is acceptable
- D. Exactly one full tile
Why: Cuts narrower than about half a tile look unbalanced and are more prone to breaking. Adjusting the starting line to create wider edge pieces improves the finished appearance.
Q4. When measuring a room for tile, what should you do to get an accurate square footage?
- A. Measure only the longest wall and multiply by the ceiling height
- B. Measure the length and width at several points and use the largest dimensions, then add waste ✓
- C. Estimate by eye and round up to the nearest box
- D. Measure only the area you plan to tile first
Why: Walls are rarely perfectly straight or square, so measuring at multiple points and using the largest dimensions, plus an allowance for waste (often 10 percent), gives a reliable tile quantity.
Q5. What tool is used to check whether two walls or layout lines meet at a true 90-degree angle?
- A. A plumb bob
- B. A 3-4-5 triangle check ✓
- C. A level with a bubble vial only
- D. A tape measure pulled tight across the room
Why: The 3-4-5 method uses side lengths in a 3:4:5 ratio (for example, 3 feet, 4 feet, and 5 feet) to confirm a right angle, making it a simple way to square layout lines.
Module 5
Module 5: Cutting Tiles
Cutting Tiles
Knowledge check
Q1. Which tool is most commonly used to score and snap ceramic wall tiles in a straight line?
- A. Angle grinder
- B. Manual tile cutter with a scoring wheel ✓
- C. Hacksaw
- D. Jigsaw with a wood blade
Why: A manual tile cutter uses a carbide or tungsten scoring wheel to score the glaze, then a snapping lever breaks the tile cleanly along the score line. It is the standard tool for straight cuts on ceramic and porcelain wall and floor tiles.
Q2. Before cutting a tile, what is the recommended first step to ensure an accurate cut?
- A. Soak the tile in water for one hour
- B. Mark the cut line with a pencil or fine marker and measure twice ✓
- C. Heat the tile with a torch
- D. Sand the back of the tile
Why: Accurate measurement and clear marking of the cut line are essential. Measuring twice and marking clearly reduces waste, since tiles are costly and difficult to replace if cut incorrectly.
Q3. When cutting porcelain tile with a wet saw, why is water used?
- A. To make the tile softer and easier to bend
- B. To cool the blade and reduce dust while lubricating the cut ✓
- C. To remove the glaze before cutting
- D. To help the tile adhere to the mortar
Why: Water cools the diamond blade, which prevents overheating and premature wear, and it suppresses silica dust, a serious respiratory hazard. It also helps produce a smoother cut edge.
Q4. What is the purpose of using a tile nipper?
- A. To drill holes in tile
- B. To remove small, irregular bits of tile or make curved cuts ✓
- C. To measure the length of a tile
- D. To apply grout between tiles
Why: Tile nippers are pincer-style tools that bite off small pieces of tile. They are ideal for trimming edges, cutting around obstacles, and shaping curves where a straight-line cutter cannot reach.
Q5. Which safety equipment is most important when cutting tile?
- A. Earplugs only
- B. Safety glasses and a dust mask or respirator ✓
- C. Rubber gloves only
- D. A hard hat
Why: Tile fragments can fly up and injure the eyes, and cutting produces fine dust that can damage the lungs. Safety glasses and a properly rated dust mask or respirator address these two main hazards.
Module 6
Module 6: Setting and Spacing Tiles
Setting and Spacing Tiles
Knowledge check
Q1. What is the main purpose of using tile spacers during installation?
- A. To add decorative lines between tiles
- B. To keep consistent gaps between tiles for grout and to allow for expansion ✓
- C. To hold the tile in place while the adhesive dries permanently
- D. To level the subfloor before tiling begins
Why: Tile spacers maintain uniform joint widths so the grout lines are even, and the gaps leave room for grout and slight movement of the tile over time.
Q2. Which tool is used to spread thinset mortar or adhesive onto the substrate before setting tiles?
- A. Grout float
- B. Tile nippers
- C. Notched trowel ✓
- D. Chalk line
Why: A notched trowel creates ridges of adhesive of a consistent height, which helps tiles bond fully and sit flat once pressed into place.
Q3. Why should you start laying tile from the center of the room rather than from a wall?
- A. Walls are always out of square, so starting there is impossible
- B. It helps you create balanced cuts at the room edges so you avoid very thin slivers of tile ✓
- C. Adhesive sets faster in the center of the room
- D. Center-start layouts use less adhesive overall
Why: Snapping chalk lines from the room's center gives a symmetrical layout, so the cut tiles at opposite walls are roughly equal in size rather than leaving a tiny sliver on one side.
Q4. What is the recommended action if you notice adhesive squeezing up between tiles and onto the tile face during setting?
- A. Let it dry and sand it off later
- B. Ignore it, since grout will cover it
- C. Wipe it away immediately with a damp sponge before it hardens ✓
- D. Add more adhesive to push the excess out
Why: Thinset that dries on the tile face or in the joints is difficult to remove and can interfere with grout, so cleaning it promptly with a damp sponge is important.
Q5. Before setting tiles, how long should you typically wait after mixing thinset before applying it?
- A. Immediately, with no waiting
- B. About 5 to 10 minutes, to allow the slaking (rest) time recommended by the manufacturer ✓
- C. At least 24 hours
- D. Until the mixture is completely dry
Why: Many thinset products need a short slaking period after mixing to fully activate, typically around 5 to 10 minutes, after which they should be remixed briefly before use.
Module 7
Module 7: Grouting and Finishing
Grouting and Finishing
Knowledge check
Q1. What is the main purpose of grout in a tiled surface?
- A. To add color to the tile surface
- B. To fill the gaps between tiles and hold them in place
- C. To make the tiles waterproof on their own
- D. To smooth out uneven subfloor surfaces
Q2. How long should you typically wait after setting tile before applying grout?
- A. Immediately after the tile is placed
- B. About 1 to 2 minutes
- C. Usually 24 hours, or as the thinset manufacturer specifies
- D. At least one full week
Q3. Which type of grout is generally recommended for areas that get wet frequently, such as showers?
- A. Unsanded grout
- B. Sanded grout
- C. Epoxy grout
- D. Lime-based mortar
Q4. Why should you wipe grout haze off tile surfaces promptly?
- A. Haze prevents the grout from curing properly
- B. Haze becomes much harder to remove once it dries on the tile
- C. Haze causes the tile to crack over time
- D. Haze reduces the grout's water resistance only in winter
Q5. What is the recommended first step after grout has fully cured?
- A. Apply a sealer if the grout type requires it, then clean the surface
- B. Walk on the floor heavily to compact the grout
- C. Fill any remaining gaps with caulk immediately
- D. Remove all spacers with a hammer