Fitting the brass drain basket
Our ceramic, tadelakt and Tamegroute sinks have a drain hole of about 4.4 cm (1.75"), and they come with a handmade brass drain basket. To use the basket, you need one standard part under the sink: an unslotted center-screw basin waste. This guide is for you and your plumber.
The part you need
An unslotted center-screw basin waste (in the UK, a "centre-pin basin waste") with a 1¼" (32 mm) tail. These kits come with a steel grid on top. Our brass basket replaces that grid; the body, gaskets and center screw are used as they are.
How it fits together
- The brass basket sits in the drain hole from inside the bowl.
- The drain body presses against the underside of the sink with a rubber gasket.
- A long screw goes through the center of the basket and threads into a cross-bar inside the body, clamping the sink between the two parts.
- So the body doesn't have to match the drain hole size. It only needs a rim wider than the hole.
What the drain body needs
- Unslotted: no overflow slot.
- A top rim and gasket wider than the drain hole.
- An opening wide enough to take the basket's cup.
- A center screw long enough for the sink wall. Handmade ceramic and tadelakt walls are thicker than standard basins, and the screw should go at least 1 cm into the cross-bar. Kits usually include a screw of about 70 mm; if it's too short, a longer stainless steel machine screw with the same thread can replace it.
- In the US, a plain unthreaded tail, so it fits a standard slip-joint trap.
Where to find one
| Where | What to search for |
|---|---|
| UK and Ireland | centre-pin basin waste, unslotted, 1¼" |
| France and Belgium | bonde de lavabo à grille avec vis centrale, sans trop-plein |
| United States | Rarely stocked in stores, so it usually has to be ordered online from European suppliers. Standard US pop-up and grid drains won't work, because their top flange is part of the threaded body. |
Installing on ceramic and tadelakt
- Seal with neutral-cure silicone. Plumber's putty can stain tadelakt and unglazed ceramic, and acetic-cure silicone can mark tadelakt and brass.
- Tighten the screw only until the gaskets compress evenly. Overtightening can crack ceramic or chip tadelakt around the hole.
Not sure a part will fit?
Send us a photo or a link to the part you've found at contact@terrafez.com and we'll check it with you. We reply within 24 hours.