Underground Drainage delivered to Harpenden

What drainage can we deliver to Harpenden?

• 110 mm and 160 mm pipePVC-U underground pipe in 3 m and 6 m lengths.
• Gullies and channel drainsTo collect surface water from yards and drives.
• Bends, junctions and couplersFittings to change direction and join branches.
• Soakaway cratesFor surface water where ground conditions allow.
• Inspection chambers and coversPlastic chambers with covers rated for the location.

Underground Drainage: choosing well

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 England, building work is checked against the Approved Documents, for example Part A for structure and Part L for energy efficiency, through your council's building control team or a registered building control approver.

Getting drainage onto your Harpenden site

Pipe travels in 3 m and 6 m lengths; fittings and chambers come boxed or loose with the load. Harpenden is inside our standard mainland delivery area.

• Tell us the best drop point, such as a driveway, front garden or the kerb, and whether a lorry can park close to it.
• If the drop point is block paving or soft ground, say so; heavy pallets and bulk bags can mark or sink.
• Pallets left on a pavement can block the footway, so plan a drop point inside your boundary where you can.

Estimating your drainage

A 12 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.

Questions about drainage delivery in Harpenden

Is there a minimum order for delivery to Harpenden?

There is no fixed minimum. For very small orders we will tell you honestly if the delivery cost outweighs the materials, so you can decide.

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.

Can I add other materials to my Harpenden 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 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).