Bathroom plumbing: what older Greater Manchester homes need
Much of the housing stock around Tameside and Oldham still runs on older plumbing. Knowing what you have decides which taps, showers and layouts will actually work — and what a new bathroom really costs.
In short
- ✓Gravity-fed (loft tank + cylinder) systems often deliver only 0.1–0.2 bar — too little for most modern thermostatic showers.
- ✓Low pressure is fixable: raise the tank height, fit a booster pump, or convert to a mains-pressure unvented/combi system.
- ✓Homes built before ~1970 may still have lead supply pipes — best replaced with modern MDPE.
- ✓Match brassware to your system: "low-pressure compatible" taps and valves on gravity-fed homes, high-pressure on mains-fed.
Why is my bathroom water pressure so low?
Most low-pressure bathrooms run on a gravity-fed system: a cold tank in the loft and a hot cylinder, relying on the height difference rather than mains pressure. That typically gives 0.1–0.2 bar, far below the 1.0–1.5 bar modern thermostatic showers expect — so the fix is to boost or convert the system, not just change the tap.
Can I run a modern shower on a gravity-fed system?
Often not without help. You have three routes: raise the cold tank for more "head", fit a shower or whole-house booster pump, or convert to a mains-pressure unvented cylinder or combi boiler. The right choice depends on your tank position, mains flow and the showers you want — which is exactly what a survey checks before quoting.
Do I need to replace lead pipes when fitting a bathroom?
Homes built before about 1970 may still have a lead supply pipe. Lead is a health risk and mineral build-up restricts flow over time, so best practice is to replace the service pipe with modern MDPE (medium-density polyethylene) from the boundary stopcock. It is worth checking and pricing in early rather than discovering it mid-project.
Gravity-fed vs mains-pressure — and why it matters
Older homes usually run a vented, gravity-fed system; newer ones run mains pressure (unvented cylinder or combi). It is the single biggest factor in which showers and taps will perform. Putting a high-pressure shower valve on a gravity system gives a trickle; the brassware has to match the system.
Three ways to fix low pressure
If a gravity system can’t drive the shower you want:
- •Raise the cold tank — more height ("head") means more pressure, where the loft allows it.
- •Fit a pump — a twin shower pump or whole-house booster lifts hot and cold to 1.5–3.0 bar (tank capacity must suit the pump).
- •Convert to mains pressure — an unvented (e.g. Megaflo-type) cylinder or a combi boiler removes the tank entirely, subject to good incoming mains flow.
Lead pipes and old drainage
Beyond pressure, older properties can hide a lead supply pipe (replace with MDPE) and original cast-iron or clay drainage that has roughened or fractured over the decades. On bigger layout changes, a CCTV drain check before work starts avoids nasty surprises.
Choosing pressure-compatible taps and showers
When you choose fittings in our showroom, the system you have guides the choice: low-pressure-rated mixers and valves for gravity-fed homes, high-pressure for mains-fed. Getting this right is the difference between a shower you love and one that disappoints.
What our surveyors check first
On any older Greater Manchester property, the first things we check are the water system and pressure — tank position, hot-water type, and the flow at the outlets. It decides everything downstream: which showers will work, whether a pump or conversion is needed, and the real budget. Getting this wrong is the most common reason a beautiful new bathroom underperforms.
Frequently asked
How much does it cost to upgrade water pressure?+
It varies with the route taken. As a general guide, converting a low-pressure gravity system to mains pressure can add a few thousand pounds to a project, while a shower pump is cheaper. We assess this at survey and put any pressure work in your fixed written quote up front.
Will a new bathroom fix my low pressure automatically?+
Not on its own — pressure is a function of your plumbing system, not the new suite. If low pressure is the problem, it needs to be designed out (pump or conversion). We flag it at survey so it is planned and priced from the start.