Building Materials
Underground Drainage delivery in Belfast
Underground drainage is the system of plastic pipes, bends, junctions and inspection chambers that carries foul and surface water away from a building, most often in 110 mm PVC-U pipe.
Building in Belfast? Send us your list and we will come back with a delivered price for the drainage and anything else on it.

Your Belfast delivery
- Daylight
- About 7h 15m on the shortest day
- Delivery
- Quoted individually (Northern Ireland)
- Postcode districts
- BT1, BT2, BT7
- Delivering to
- Belfast, County Antrim
- Nearby (straight line)
- Newtownabbey (4 mi), Holywood (5 mi), Lisburn (7 mi)
- How it arrives
- Pipe lengths and boxed fittings
Which drainage can you order in Belfast?
- Pea gravel beddingBedding and surround for pipe trenches.
- Bends, junctions and couplersFittings to change direction and join branches.
- Rainwater systemsGutters, downpipes and fittings.
- Soakaway cratesFor surface water where ground conditions allow.
- Inspection chambers and coversPlastic chambers with covers rated for the location.
Things to check before you order
Building over or near a sewer
Building near a public sewer may need permission from the water company. Check before you dig.
Covers for the location
Chamber covers are rated for loads, from pedestrian areas to drives. Tell us where each chamber sits.
In Northern Ireland building work follows the Building Regulations (Northern Ireland), with guidance in the Technical Booklets, and applications go to the council's building control team.
Estimating your drainage
An 18 m run of 110 mm drain needs 6 pipes in 3 m lengths (or 3 in 6 m lengths), plus a bend or junction at each change of direction and an inspection chamber where your design shows one. Add pea gravel for bedding and surround and we will price the lot together.
Delivery to Belfast: what helps
Pipe travels in 3 m and 6 m lengths; fittings and chambers come boxed or loose with the load. Deliveries to Northern Ireland include a sea crossing, so we quote each order individually.
- Deliveries are to the kerb, drive or within crane reach; ask if materials need to go further.
- With roughly 7h 15m of daylight in Belfast around the shortest day, morning deliveries leave more working light for the job.
- Give us the full postcode for the drop point; deliveries around BT1 are priced to the exact address.
Ordering drainage for Belfast: FAQs
Can I add other materials to my Belfast delivery?
Yes. Put everything on one list, from drainage to fixings and PPE, and we will price it as one delivery where the products can travel together.
What size drainage pipe do I need?
110 mm is the standard size for most domestic underground foul and surface water drains; 160 mm is used for larger runs. Your design or building control will confirm.
Do you deliver drainage to Belfast?
Yes. We deliver across Belfast, including BT1, BT2, BT7. Deliveries to Northern Ireland include a sea crossing, so we quote each order individually. Send your list or call 0800 088 6341 and we will price it delivered to your postcode.
What fall should a drain have?
Domestic drains are commonly laid at a gradient around 1:40 to 1:80 depending on the pipe size and flow; follow your approved design or your national drainage guidance (Approved Document H in England and Wales, Technical Handbook section 3 in Scotland, Technical Booklet N in Northern Ireland).
Also delivering drainage nearby
- Underground Drainage in Newtownabbey
- Underground Drainage in Holywood
- Underground Drainage in Lisburn
- Underground Drainage in Newtownards
- Underground Drainage in Carrickfergus
- Underground Drainage in Bangor (Down)
Also available in Belfast
Send your list, get a delivered price
Tell us what you need and where it is going. We check the quantities and come back with a delivered price before you commit.
