Building Materials
Underground Drainage for sites in Ayrshire
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.
SK Trade delivers drainage across Ayrshire, including Kilmarnock, Ayr, Irvine and Kilwinning, priced to your postcode before you order.

Ayrshire at a glance
- Covering
- 6 towns across Ayrshire
- Postcode areas
- KA
- Delivery
- Standard mainland delivery
- How it arrives
- Pipe lengths and boxed fittings
- Neighbouring areas
- Renfrewshire and Inverclyde, Glasgow, Dunbartonshire
Underground Drainage we supply in Ayrshire
- Soakaway cratesFor surface water where ground conditions allow.
- Rainwater systemsGutters, downpipes and fittings.
- Gullies and channel drainsTo collect surface water from yards and drives.
- Bends, junctions and couplersFittings to change direction and join branches.
- 110 mm and 160 mm pipePVC-U underground pipe in 3 m and 6 m lengths.
Underground Drainage delivered in Ayrshire towns
- Underground Drainage in Kilmarnock
- Underground Drainage in Ayr
- Underground Drainage in Irvine
- Underground Drainage in Kilwinning
- Underground Drainage in Troon
- Underground Drainage in Prestwick
How much will you need?
A 10 m run of 110 mm drain needs 4 pipes in 3 m lengths (or 2 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.
Planning the drop in Ayrshire
Pipe travels in 3 m and 6 m lengths; fittings and chambers come boxed or loose with the load. Our standard mainland delivery area covers Ayrshire.
- Tell us the best drop point, such as a driveway, front garden or the kerb, and whether a lorry can park close to it.
- Weight limits on bridges or private roads near the site matter for larger lorries, so mention any you know of.
- On busy streets in Ayrshire, a parking suspension or a quiet time slot can make offloading safer, so tell us about local restrictions you know of.
Choosing drainage
Foul or surface water?
Foul (sewage) and surface water often need to go to different places. Check where your drains connect before you order.
Covers for the location
Chamber covers are rated for loads, from pedestrian areas to drives. Tell us where each chamber sits.
In Scotland most building work needs a building warrant from the local authority, assessed against the Building Standards Technical Handbooks.
Underground Drainage questions
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).
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 the council's building standards service will confirm.
Can you deliver drainage to a site with restricted access in Ayrshire?
Usually, yes. Tell us about the access when you ask for a price and we will plan the vehicle and offload, or say if a smaller vehicle is needed.
Do you deliver drainage to trades and homeowners in Ayrshire?
Both. Trades can apply for a trade account; homeowners and self-builders can order on a delivered quote.
Underground Drainage in neighbouring areas
- Underground Drainage in Renfrewshire and Inverclyde
- Underground Drainage in Glasgow
- Underground Drainage in Dunbartonshire
- Underground Drainage in Lanarkshire
- Underground Drainage in Argyll and Bute
More materials delivered across Ayrshire
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.
