Plumb Supply
Copper fittings, bathroom plans, pen and tape measure on a workbench
Advice & Guides

Practical advice.Better projects.

Buying guides and product advice for your home and your next job.

Bathroom with freestanding bath and timber vanity
Featured guide

How to Plan a Bathroom Renovation

Plan your bathroom renovation properly: measuring, layout, plumbing runs, sanitaryware choices, ventilation and the order trades should work in.

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Find the right guide for your next job

26 guides · including featured guide
White column radiator in a bright living room
Heating

Radiators Buying Guide: How to Choose Radiators for Any Room

Everything you need to compare radiator types, outputs and sizes before you buy — written for installers and homeowners.

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Domestic heating boiler
Heating

Boilers Buying Guide: Combi, System and Regular Compared

How to choose between combi, system and regular boilers — output, hot water demand, fuel type and the parts every swap needs.

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Bathroom suite with bath and basin
Bathrooms

Bathroom Suites Buying Guide: Layouts, Sizes and What to Order

Compare complete, cloakroom and designer bathroom suites, plan the layout properly, and order everything the fit needs first time.

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Vertical designer radiator
Heating

How to Size a Radiator: BTU Calculations Made Simple

A step-by-step method for working out the BTU output a room needs, and how to turn that figure into a radiator height and width.

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Wall-mounted gas boiler
Heating

Boiler Efficiency Explained: ErP Ratings and Running Costs

What ErP ratings mean in practice, why flow temperature matters more than the label, and how to keep a condensing boiler efficient.

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Air source heat pump
Renewables

Air Source Heat Pumps Explained: Sizing, Radiators and Cylinders

How air source heat pumps work in practice, why low flow temperatures change radiator sizing, and what a retrofit involves.

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Soil and waste pipe fittings
Drainage

Soil and Waste Pipe Sizes Explained

Which waste pipe size each appliance needs, how soil stacks and traps work together, and the falls to aim for.

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Building insulation rolls and boards
Building Materials

Insulation Types and U-Values Explained

U-values, lambda ratings and the practical differences between loft, cavity, PIR board and acoustic insulation.

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Plumbing hand tools and pipe cutters
Tools

Essential Tools for a Plumbing Tool Kit

What belongs in a genuine plumbing tool kit, from grips and pipe cutters to jointing compound, and which specialist tools are worth adding later.

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