How to Install a Kitchen Sink in Kenya: Step-by-Step Guide (2026)

A kitchen sink is one of the easiest plumbing jobs to do yourself if the water and drain pipes are already in place. You need the sink, a waste outlet, a trap, a tap, silicone and a few hours.

Parts and Tools You Need

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Tools: tape measure, pencil, jigsaw (for an inset sink), drill, spanner, screwdriver, bucket and cloth.

How to Install a Kitchen Sink Step by Step

1. Measure and mark. Place the sink upside down on the worktop where you want it, trace around it, then draw a second line about 10–15 mm inside the first (the sink rests on that lip).
2. Cut the opening. Drill a hole inside the inner line and cut along it with a jigsaw. Support the off-cut so it does not break the worktop.
3. Fit the tap and waste first. It is much easier before the sink is in place. Seal the waste outlet with silicone or the supplied washer and tighten from below.
4. Seal and set the sink. Run a continuous bead of silicone around the opening, lower the sink in and fix the clips underneath. Wipe off extra silicone.
5. Connect the trap. Fit the bottle trap to the waste outlet and run it to the 1½" wall drain with a flexible connector or PVC pipe. Hand-tighten, then a quarter turn more.
6. Connect the water. Join the tap to the supply with the right fittings and thread tape.
7. Test. Fill the sink, pull the plug and check every joint with a dry tissue. Leave the silicone 24 hours before heavy use.

Can I Install a Kitchen Sink Myself?

Yes, if you are replacing a sink or the pipes are already in the wall. Call a plumber if you need new supply pipes, the drain is far away or below the sink outlet, or you are fitting a heavy stainless double sink with a table such as the double sink with table used in commercial kitchens.

Worked Example: Replacing an Old Sink in a Rental

The old sink leaks at the waste. The tenant buys a single bowl sink with drainer, a 1½" bottle trap, a flexible connector, a pillar tap and a tube of silicone. The old cut-out fits the new sink, so no cutting is needed. Fitting takes about two hours and the parts cost a fraction of a call-out and materials markup.

Common Mistakes to Avoid

• Cutting the opening on the outer line, so the sink falls through.
• Skipping silicone around the rim, so water runs under the worktop and rots it.
• Over-tightening plastic traps until they crack.
• Running the waste pipe uphill to the drain.

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Frequently Asked Questions

How do you install a kitchen sink drain?

Seal the waste outlet in the sink, fit a bottle trap and connect it to the 1½" drain with a flexible connector or PVC pipe.

What silicone is best for a kitchen sink?

A sanitary or general-purpose silicone sealant that stays flexible and resists water.

Do I need plumber’s putty?

Silicone or the supplied rubber washer does the same job for most sink wastes.

How long does silicone take to dry?

It skins in minutes but needs about 24 hours to cure fully.

What size is a kitchen sink waste pipe?

Kitchen sinks normally use 1½" (40 mm) waste.

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Related Guides

• Kitchen Sink Price in Kenya
• How to Unblock a Sink or Drain
• PVC Waste Pipe and Drainage Fittings