Plumber in Llanishen for Radiators & Bathrooms

Last updated: 7 October 2026

Rimko Plumbing Ltd is a trusted plumber in Llanishen, carrying out radiator replacements, bathroom renovations and plumbing repairs across the area. Llanishen has lots of 1930s and post-war semi-detached houses, from the roads around Llanishen Reservoir and the railway station to Fidlas Road and Ty Glas.

These well-built family homes have usually been updated over the years, but the heating and bathroom pipework is often a mix of old and new.

Radiator Replacement from Your Plumber in Llanishen

Radiators in many Llanishen homes have been in place for decades. Signs that one needs replacing include cold patches at the top or bottom, rust around the valves, brown water when you bleed it and rooms that never feel properly warm.

We replace single radiators or whole sets, size them correctly for each room, fit thermostatic radiator valves and leave the system balanced. If you want a towel radiator in the bathroom or a vertical radiator to free up wall space, we can do that too. Find out more about our radiator replacement in Cardiff.

Family Bathroom Renovations in Llanishen

The typical Llanishen semi has a modest family bathroom and sometimes a separate toilet. Knocking the two together or rethinking the layout can create a much more practical space. We strip out the old suite, update the pipework, fit the new bath or shower and finish with a tidy, modern look.

Our customers often comment on how quickly we complete bathroom work, which matters when it is the only bathroom in a busy family home.

Plumbing Services in Llanishen

• Bathroom Renovations in Llanishen: complete bathroom refits, from strip-out and new pipework to the finished suite.
• Radiator Replacement in Llanishen: old, leaking or under-sized radiators swapped for efficient modern ones.
• Shower Tray Replacement in Llanishen: cracked, flexing or leaking shower trays replaced and properly sealed.
• Leak Repair in Llanishen: leaking pipes, taps, toilets, radiators and showers traced and fixed.
• General plumbing in Llanishen: taps, toilets, pipework and outdoor taps.

Recent Work Near Llanishen

Neighbouring Areas We Cover

As well as Llanishen, we regularly work in nearby Heath, Cyncoed, Pentwyn and Rhiwbina. See the full list of areas we cover across Cardiff.

Plumber in Llanishen: FAQs

How do I know if my radiators need replacing?

Cold patches, rust, leaks around the valves or dirty water when bleeding are common signs. We check the radiator and the system and tell you honestly if a replacement is needed.

Can you combine a separate toilet and bathroom in my Llanishen semi?

Often, yes. We look at the layout and the pipework and advise on what is possible before you commit.

Do you cover Ty Glas and the area near Llanishen Reservoir?

Yes. We cover all of Llanishen, including Ty Glas, Fidlas Road and the roads near the reservoir, as well as Heath, Cyncoed and Rhiwbina.

Do you install towel radiators?

Yes. We fit heated towel rails and designer towel radiators, usually as part of a bathroom refit or as a straight swap.