Ducting

Learn more about ducting

Ducting is the pipework that carries air between an extractor fan or inline fan and the outside of a building. That usually means clearing stale, humid air from a bathroom or grease laden air from a kitchen, then venting it through a wall or roof terminal.

Typical uses

• Kitchen cooker hood ventilation: Routing high-volume steam and grease-laden air outdoors using 125mm or 150mm rigid or flexible duct lines.

• Bathroom & ensuite moisture control: Connecting 100mm inline or wall-mounted extractor fans to external louvre grilles.

• Groundworks & cable protection: Enclosing underground service utilities in heavy-duty twinwall corrugated ducting coils.

How to choose the right ducting

• Match the duct type to the job. Flexible ducting is easier to route around obstacles, rigid PVC gives a cleaner run, and insulated ducting helps where condensation or heat loss is a risk.

• Check the diameter against the fan or inline fan outlet so you do not restrict airflow at the connection.

• Measure the full run length and count the bends, because every metre and every elbow adds resistance.

• Weigh up the route. Flexible ducting is practical for awkward runs, while smooth bore rigid ducting is often the better choice for a straight route.

• Consider ducting insulation where the run passes through cold voids or unheated spaces, to help reduce condensation and limit noise transfer.

• Check the product specifications and any relevant Building Regulations for the ventilation work you are carrying out.

Before you order

• Confirm the duct diameter, total run length, fixing points and the number of fittings the route needs.

• Decide whether the run needs moisture resistance, grease resistance or a more rigid setup for the way it will be used.

• Work out where the duct will exit and how you'll seal it at the wall or roof terminal.

• Allow for ducting accessories such as elbows, reducers, clamps and tape, plus a bit of wastage.

• Check compatibility with the fan, grille or terminal you're fitting so everything connects cleanly.

Explore our range of ducting

Shop extractor fan ducting, flexible and PVC ducting in one place, so you can compare the options and choose what suits the job. You can also pick up ducting accessories at the same time, which keeps the order together.

With Click & Collect, nationwide branch coverage and reliable stock availability, it is straightforward to get what you need and keep the job on track.