Course outline
Module 1
Module 1: Tools and Materials You Need
Tools and Materials You Need
Knowledge check
Q1. Which tool is most commonly used to tighten or loosen the nuts and fittings on a tap?
- A. Hacksaw
- B. Adjustable spanner ✓
- C. Claw hammer
- D. Spirit level
Why: An adjustable spanner (wrench) grips nuts and fittings of various sizes, making it the most versatile choice for loosening or tightening tap components without damaging them.
Q2. What material is typically used as a thread sealant to prevent leaks at pipe joints?
- A. Sandpaper
- B. PTFE (Teflon) tape ✓
- C. Masking tape
- D. Duct tape
Why: PTFE tape is wrapped around threaded pipe connections to fill small gaps and create a watertight seal. Masking and duct tape are not designed to withstand water pressure or temperature.
Q3. Before you begin any repair on a tap, what should you do first?
- A. Remove the tap handle immediately
- B. Turn off the water supply ✓
- C. Apply penetrating oil to the valve
- D. Heat the fittings with a torch
Why: Shutting off the water supply, usually at the isolation valve under the sink or the main stopcock, prevents flooding and water wastage while you work on the tap.
Q4. Which tool is designed to remove a worn or stripped screw from a tap handle?
- A. Screwdriver ✓
- B. Pliers
- C. Allen key
- D. Chisel
Why: A screwdriver of the correct type and size is used to remove the screw holding the tap handle in place. Choosing the right head size helps avoid stripping the screw further.
Q5. What is a basin wrench mainly used for?
- A. Cutting copper pipe
- B. Reaching and tightening nuts in tight spaces behind a sink ✓
- C. Measuring water pressure
- D. Drilling holes in tiles
Why: A basin wrench has a long shaft and a jaw that rotates to reach the mounting nuts of a tap located in cramped spaces under or behind a sink, where a standard spanner cannot fit.
Module 2
Module 2: Identifying the Type of Tap
Identifying the Type of Tap
Knowledge check
Q1. Which type of tap uses a rotating ceramic disc to control water flow and is common in modern kitchens and bathrooms?
- A. Compression tap
- B. Ball tap
- C. Ceramic disc tap ✓
- D. Cartridge tap
Why: Ceramic disc taps use two ceramic discs that slide and rotate against each other to control water flow and temperature. They are common in modern homes because they are durable and need only a quarter turn to fully open or close.
Q2. A compression tap has separate handles for hot and cold water. What is the most distinctive feature that identifies it?
- A. A single lever that moves in an arc
- B. A rubber washer at the bottom of the spindle that presses against a valve seat ✓
- C. A cylindrical cartridge that is removed as one unit
- D. A dome-shaped cap with no visible spindle
Why: Compression taps work by screwing a spindle down onto a washer that presses against a valve seat to stop the flow. Leaks often come from this washer wearing out, which is why identifying this design matters before repair.
Q3. Which tap type is identified by a single lever that controls both water flow and temperature by moving up-and-down and side-to-side?
- A. Two-handle compression tap
- B. Pillar tap
- C. Single-lever mixer tap ✓
- D. Bib tap
Why: A single-lever mixer tap combines flow and temperature control in one handle. Lifting controls flow and sweeping side to side adjusts temperature. Knowing this helps you choose the correct repair parts.
Q4. Which tap has a visible cylindrical cartridge inside the body that is removed as a single unit when repairing a leak?
- A. Bib tap
- B. Compression tap
- C. Cartridge tap ✓
- D. Pillar tap with a fixed jet
Why: Cartridge taps contain a sealed cylinder that controls water flow and mixing. When leaking, the whole cartridge is usually replaced rather than individual washers, making it quicker to identify and fix.
Q5. A bib tap is typically found where, and how can it be recognized?
- A. Inside a bathtub, recognized by a pop-up plug
- B. On the wall above a sink or outdoor area, recognized by a horizontal outlet and a separate handle ✓
- C. Under the sink, recognized by a flexible hose
- D. On the ceiling, recognized by a rotating head
Why: Bib taps are wall-mounted taps with a horizontal outlet, often used for outdoor hose connections or utility sinks. Their simple exposed design makes them easy to identify before you start any leak repair.
Module 3
Module 3: Shutting Off the Water Supply
Shutting Off the Water Supply
Knowledge check
Q1. Before you begin repairing a leaking tap, what is the first thing you should do?
- A. Remove the tap handle immediately
- B. Shut off the water supply to the tap ✓
- C. Apply penetrating oil to the valve stem
- D. Turn the tap fully open to release pressure
Why: Shutting off the water supply prevents water from flowing out during the repair and avoids flooding or damage while you work.
Q2. Where are the isolation valves for a sink or basin tap usually located?
- A. On the main water meter outside the house only
- B. Inside the cabinet beneath the sink, on the supply pipes ✓
- C. Behind the faucet spout above the sink
- D. In the ceiling above the bathroom
Why: Most sinks and basins have local isolation valves (angle stops) on the hot and cold supply pipes under the sink, allowing you to shut off water to just that tap.
Q3. If there are no isolation valves under the sink, what should you do to shut off the water?
- A. Pour water out of the tap until the pipes are empty
- B. Locate and turn off the main stopcock for the property ✓
- C. Wait for the leak to stop on its own
- D. Cut the supply pipe with a hacksaw
Why: The main stopcock controls the whole property's water supply. Turning it off stops water to all taps, which is the safe option when no local valve exists.
Q4. Which direction do you typically turn an isolation valve to close it?
- A. Counterclockwise until it stops
- B. Clockwise until it is snug and firm ✓
- C. Pull it straight out of the pipe
- D. Push it sideways until it clicks
Why: Standard valves close by turning clockwise. Turn until snug and firm; do not overtighten, as this can damage the valve washer or seat.
Q5. After shutting off the water supply, what should you do before removing the tap components?
- A. Open the tap to check that no water comes out ✓
- B. Close the plug hole and leave the tap running
- C. Immediately unscrew the tap nut without testing
- D. Heat the tap with a blowtorch
Why: Opening the tap to drain the remaining water confirms the supply is off and relieves residual pressure, so water does not spray out when you disassemble it.
Module 4
Module 4: Dismantling the Tap Safely
Dismantling the Tap Safely
Knowledge check
Q1. What is the very first safety step before you begin dismantling a leaking tap?
- A. Remove the tap handle immediately
- B. Turn off the water supply to the tap ✓
- C. Apply penetrating oil to the valve stem
- D. Cover the sink drain with a cloth only
Why: Shutting off the water supply (usually at the isolation valves under the sink, or the main supply if none exist) prevents water from flooding the cabinet or spraying when parts are removed. Opening the tap afterward helps relieve any remaining pressure.
Q2. Why should you place a towel or rag in the bottom of the sink before disassembling a tap?
- A. To absorb any cleaning solution used on the parts
- B. To keep small parts from falling down the drain and to cushion fragile components
- C. To make the tap easier to grip with a wrench
- D. To prevent the handle from scratching the basin
Q3. Which tool is generally best for removing a tap handle's retaining screw or nut without damaging the finish?
- A. A hacksaw
- B. An appropriately sized screwdriver or Allen key ✓
- C. A pipe wrench clamped directly on the chrome
- D. A hammer and chisel
Why: Using a correctly sized screwdriver or hex/Allen key fits the fastener snugly and minimises the risk of stripping the screw head or scratching the finish. Pipe wrenches and hammers can easily damage the tap body.
Q4. When loosening a stubborn nut under the sink, what precaution helps protect the tap and pipework?
- A. Use a wrench on the tap body while pulling hard
- B. Hold the tap steady and use a basin wrench or adjustable spanner with steady, controlled pressure ✓
- C. Heat the nut with a blowtorch until it loosens
- D. Hit the nut sharply with a mallet
Why: Holding the tap steady prevents twisting the supply pipes or the tap body, and steady pressure avoids sudden slips that can cause injury or damage. Heat and mallet strikes are unsafe near plastic seals and can crack components.
Q5. After dismantling the tap, what should you do with the parts to make reassembly easier?
- A. Throw all parts away and buy a new tap
- B. Lay them out in order on a clean towel, noting or photographing their arrangement ✓
- C. Leave them loosely piled in the sink basin
- D. Submerge them in water overnight
Why: Keeping parts in the order they were removed, and photographing the layout, ensures correct reassembly, especially for washers, O-rings, and cartridges that look similar but are not interchangeable.
Module 5
Module 5: Inspecting and Replacing Worn Parts
Inspecting and Replacing Worn Parts
Knowledge check
Q1. Which part of a compression tap is most commonly worn out and responsible for a drip from the spout?
- A. The tap handle
- B. The rubber washer at the bottom of the valve stem ✓
- C. The aerator on the spout
- D. The cold water supply pipe
Why: In a compression tap, the rubber washer at the base of the valve stem presses against the valve seat to stop water flow. Over time it compresses, cracks, or wears down, allowing water to leak past it and drip from the spout.
Q2. Before you begin removing any parts from a leaking tap, what should you do first?
- A. Turn the tap fully open to relieve pressure
- B. Pour hot water over the tap to loosen the fittings
- C. Shut off the water supply to the tap ✓
- D. Remove the aerator from the spout
Why: Shutting off the water supply, usually with the isolation valve under the sink or the main stopcock, prevents water from flooding the area while you work. Opening the tap to relieve pressure would only release the water still in the pipes and make a mess.
Q3. What is the correct direction to turn a tap handle or the valve stem's hex nut when you are removing it?
- A. Clockwise, as viewed from above
- B. Counterclockwise, as viewed from above ✓
- C. Clockwise, as viewed from below
- D. Either direction works equally well
Why: Standard tap fittings are right-hand threaded, so you loosen them by turning counterclockwise, as viewed from above. Turning the wrong way can strip the threads or tighten the part further.
Q4. When replacing a worn washer, which of the following is the best practice?
- A. Reuse the old washer after cleaning it with vinegar
- B. Use a washer of the same size and type, and secure it firmly with the retaining screw ✓
- C. Use a much thicker washer so it seals more tightly
- D. Replace the washer with a plastic spacer to avoid future wear
Why: A replacement washer must match the original in size and type to seal correctly. Securing it firmly with the retaining screw holds it in place. An oversized or improvised washer may not seat properly and can cause leaks or damage the valve.
Q5. After reassembling the tap and turning the water supply back on, what should you check?
- A. Whether the handle feels stiff when turned fully closed
- B. Whether the tap drips or leaks when fully closed, and that no water is leaking around the handle ✓
- C. Whether the aerator has been removed
- D. Whether the hot and cold supplies have been swapped
Why: Testing the tap when closed confirms the washer seals properly, and checking around the handle and base ensures no leaks remain at the joints. Catching problems at this stage avoids having to disassemble the tap again.
Module 6
Module 6: Reassembling and Testing the Tap
Reassembling and Testing the Tap
Knowledge check
Q1. After replacing the washer and cartridge, what should you do before fully reattaching the tap handle?
- A. Tighten the packing nut as hard as possible
- B. Slowly turn the water supply back on and check for leaks at the base and spout
- C. Remove the aerator so water flows freely
- D. Apply silicone sealant to all threads
Q2. Why should you lightly grease new O-rings before reinstalling them?
- A. Grease makes the tap turn on by itself
- B. It helps the O-ring seat properly and reduces wear and friction during operation
- C. Grease replaces the need for a washer
- D. It prevents the water supply from ever being turned off again
Q3. When reassembling the tap, what is the main reason to tighten components only until snug rather than with maximum force?
- A. Over-tightening can crack plastic parts or damage washers and seats, causing new leaks
- B. Snug fittings make the water pressure higher
- C. Tight fittings prevent the handle from turning
- D. Over-tightening automatically aligns the cartridge
Q4. Which test confirms the tap is fixed after reassembly?
- A. Turn the tap on fully and off fully several times, watching for drips from the spout and dampness around the handle
- B. Wait one day without using the tap to see if it dries
- C. Blow into the spout to check for airflow
- D. Check only whether the handle feels heavy
Q5. If the tap still drips from the spout after reassembly, what is the most likely cause to check first?
- A. The water heater thermostat setting
- B. A misaligned or worn cartridge/valve seat, or a damaged washer not seated correctly
- C. The color of the tap finish
- D. The length of the water supply hose
Module 7
Module 7: Preventing Future Leaks
Preventing Future Leaks
Knowledge check
Q1. Which of the following is the most effective way to prevent a dripping tap from developing into a major leak?
- A. Ignore the drip until the washer fails completely
- B. Replace worn washers or cartridges as soon as a drip appears ✓
- C. Tighten the tap handle as hard as possible every week
- D. Pour sealant into the spout to stop water flow
Why: Worn washers or cartridges are the most common cause of drips, and replacing them promptly stops small leaks before they damage the seat, valve body, or surrounding fixtures.
Q2. How often should you inspect under your sinks for signs of moisture to catch tap leaks early?
- A. Once every five years
- B. Only when you notice a large puddle
- C. Every few months as part of routine home maintenance ✓
- D. Never, because taps rarely leak underneath
Why: Regular inspection every few months helps you spot slow leaks, damp cabinet bases, or mineral buildup early, when repairs are cheap and simple.
Q3. What is a useful habit for reducing wear on tap internals over time?
- A. Turning the handle fully on and slamming it off
- B. Using only gentle, moderate force when closing the tap ✓
- C. Leaving the tap half open at all times
- D. Cleaning the tap with abrasive powder every day
Why: Overtightening and slamming the handle grinds down washers and seats. Closing the tap gently with moderate force significantly extends the life of internal components.
Q4. Why can hard water increase the risk of tap leaks?
- A. It dissolves rubber washers immediately
- B. Mineral deposits build up on valve parts and cause them to wear or seal poorly ✓
- C. It raises water pressure to dangerous levels
- D. It causes the pipes to expand and crack
Why: Hard water leaves limescale and mineral deposits on cartridges, seats, and aerators, which can prevent proper sealing and accelerate wear, leading to leaks.
Q5. Which step helps prevent leaks from developing at the tap's connections after a repair?
- A. Leaving all fittings completely loose
- B. Applying plumber's tape to threaded joints and tightening them snugly without overtightening ✓
- C. Coating all joints with cooking oil
- D. Removing all gaskets to reduce friction
Why: Plumber's tape creates a better seal on threaded joints, and snug (not excessive) tightening prevents both leaks and cracking of fittings or washers.