Strap On Boss

A strap on boss is one of those fittings that earns its keep every time you need to add a new waste outlet to an existing soil or waste pipe without taking the whole run apart. Rather than cutting in a new tee and replumbing a section, you drill a hole in the existing pipe, strap the boss directly over it, and you have a secure, sealed connection ready to use. Simple enough in principle, and it genuinely is that straightforward in practice.

These are used constantly on bathroom and kitchen installations where the waste stack is already in place and adding a new appliance means finding a way in. A washing machine moved to a utility room, an additional basin in a cloakroom, or a new shower waste that needs connecting to the nearby stack. The strap on boss handles all of these without the disruption of major pipe surgery.

Where the Strap On Boss Gets Used

On domestic plumbing jobs, you will find these fitted to 110mm soil stacks and smaller 40mm or 32mm waste pipes alike, depending on the boss size in question. They are widely used by plumbers, bathroom fitters, and kitchen installers who want a clean, reliable connection point added quickly. The rubber or plastic seal on the back of the strap compresses against the pipe when tightened, creating a watertight joint that does not rely on solvent cement or specialist tools.

Available here in black, grey, and white, so you can match the boss to your existing pipework rather than leaving a mismatched fitting on show. It is a small detail that matters when the pipework is visible, which on a neat job it often is.

At under two pounds, keeping a couple in the van makes sense. You will find a use for them more often than you might expect, and the alternative is a return trip to the merchant or a significantly bigger job than you planned for.