110mm to land drain adapters — surface water only

A garden land drain often ends at a soakaway or a ditch. Sometimes the only sensible outlet is an existing 110mm surface-water pipe. That join is not a land-drain coupling — it needs a proper size step from 110mm down to the corrugated coil, or from 110mm across to a gutter downpipe.

The 110mm to land drain / gutter adapters cover those connections. One hard rule first: surface water only — never foul.

Surface water only — never foul

Land drain is perforated pipe in a gravel trench. It collects groundwater. The fittings that join it are not watertight underground drainage joints. A 110mm adapter on this listing is for surface water — taking land drain into a 110mm surface-water run, or linking 110mm to a 68mm gutter downpipe.

Do not connect land drain or this adapter into a foul or soil pipe. If you cannot tell which drain is which, stop. The full trench-and-outlet method is in how to install a garden land drain.

When you'd use this adapter

Typical DIY and trade jobs:

• A land-drain main discharging into an existing 110mm surface-water pipe toward a soakaway or approved outlet
• A 68mm gutter downpipe entering the 110mm surface-water side of the same job

It does not replace a same-size land-drain coupling, Y, T or elbow on the perforated run. Those joints stay on the coil. The adapter is the step at the 110mm interface. For joining land drain to land drain, see how to join land drain pipe.

Connection options — details on the product page

From the listing, adapters step from 110mm to land drain in 50, 60, 80 or 100mm, or to a 68mm gutter downpipe. Choose the option that matches both ends. Full connection list and size notes stay on the product page — this guide is about the job, not a full variant dump.

Made in the United Kingdom.

Sizing and fit — check before you order

Internal pipe sizes differ by brand. Measure your land drain (and the 110mm or downpipe end) or check the product size notes and check fit before ordering. Shape Shop will release outside-diameter (OD) fittings soon for wider compatibility — no launch date or SKUs yet.

More on coil sizes: land drain sizes: 60mm, 80mm or 100mm?. We do not sell the coil — buy pipe from a merchant and match the fitting.

Common mistakes

• Connecting into a foul or soil pipe
• Ordering the wrong land-drain size for the coil you have
• Using this adapter as a land-drain-to-land-drain coupler (use a matching coupling or junction instead)
• Skipping a planned outlet before you dig

Related products

• 110mm to land drain / gutter adapters — 110mm to land drain or 68mm downpipe; surface water only
• Underground drainage end cap — 110 & 160mm — end cap plug for 110mm or 160mm underground drainage pipe; not a land-drain fitting

Plan the outlet before you dig. Keep foul separate. Match the adapter to the pipes you have, then finish the trench as in the install guide.