Looking for underfloor heating in Lisburn and Castlereagh? Whether you need a wet system installed in a new build, electric UFH fitted in your bathroom, supply-only for a DIY project, or a repair on an existing system — find 1 verified local professionals below with genuine customer reviews.
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Get free quotes — it takes 2 minutesUFH covers a wide range of needs. Use the descriptions below to identify what you're looking for, then contact the relevant businesses above.
Water-based systems using warm water pumped through pipes beneath your floor. More efficient long-term and ideal for new builds or full renovations.
Heating cables or mats installed under tiles, laminate or engineered wood. Low installation cost, perfect for single rooms like bathrooms and kitchens.
Thermostats, manifolds, insulation boards, pipes and mats available from local specialists. Some suppliers also offer design and specification advice.
Fault diagnosis, thermostat replacement, pressure testing and full system servicing. Keep your underfloor heating running at peak efficiency.
Full system design, installation and commissioning for new build properties. Includes heat loss calculations and system sizing for every room.
Adding UFH to an existing property without full floor replacement. Overlay systems and low-profile solutions available for minimal disruption.
Prices vary by system type, floor area and existing construction. These are typical ranges for the Lisburn and Castlereagh area — always get multiple quotes.
| System type | Typical cost |
|---|---|
| Electric UFH (single room) | £400–£900 |
| Wet UFH (per room) | £1,000–£2,500 |
| Whole house (wet system) | £3,500–£12,000+ |
| Retrofit overlay system | £600–£1,500 per room |
Prices are indicative for 2025 and include supply and installation unless stated. Get quotes from our listed Lisburn and Castlereagh professionals for accurate pricing. Use our cost calculator for a personalised estimate.
Wet systems connected to a gas boiler require a Gas Safe registered engineer. Electric UFH work should be carried out by a Part P or NICEIC certified electrician. Don't skip this step.
Many plumbers and electricians list UFH as a service, but specific experience matters. Ask how many UFH installations they've completed and whether they can provide references.
A reputable installer will calculate the heat loss for each room before sizing the system. This ensures the UFH can keep the room at temperature even on the coldest days.
Prices vary significantly. A low quote may mean cheaper materials or corners being cut on insulation. Ask each installer to quote like-for-like so you can compare fairly.
Read Google reviews and look for mentions of UFH specifically — not just general plumbing or electrical work. Recency matters too: look for reviews from the past 12 months.
Quality UFH systems carry 10–25 year manufacturer warranties on the pipe or cable. Make sure your installer registers the warranty on your behalf and provides the documentation.
Common questions from homeowners in Lisburn and Castlereagh.
In Lisburn and Castlereagh, electric underfloor heating typically costs £400–£900 per room including installation, making it popular for bathrooms and kitchens. Wet (water-based) systems cost £1,000–£2,500 per room, or £3,500–£12,000 for a whole house. Get quotes from several of the 1 local professionals listed on this page to compare prices for your specific project.
Wet (hydronic) underfloor heating uses warm water pumped through pipes beneath the floor and is connected to your boiler or heat pump. It runs at lower temperatures (35–45°C), is more efficient long-term, and suits new builds or major renovations. Electric UFH uses heating cables or mats and costs less to install, making it ideal for single rooms or retrofit projects. Most installers in Lisburn and Castlereagh offer both types and can recommend the best solution for your home.
Yes — many Lisburn and Castlereagh homes are good candidates for retrofit UFH. Electric mats can be installed under tiles or engineered wood with as little as 3–5mm height increase. For wet systems, low-profile overlay boards (around 15–25mm) avoid the need to dig up existing floors. A local specialist can assess your floors and insulation and recommend the most cost-effective approach.
Underfloor heating operates at lower water temperatures than radiators (35–45°C vs 65–75°C), which makes it significantly more efficient — especially when paired with a heat pump. Electric systems are 100% efficient at the point of use, though running costs depend on electricity tariffs. Many homeowners who switch to UFH report lower heating bills, particularly in well-insulated properties.
Ceramic and porcelain tiles are the most effective as they have excellent thermal conductivity. Stone, slate and polished concrete also work very well. Engineered wood and laminate are compatible if they have low thermal resistance (below 0.15 tog). Solid hardwood and thick carpets retain heat and reduce efficiency — though UFH-compatible carpet options are available. Your installer can advise on whether your planned flooring is suitable.
A single-room electric UFH system can typically be installed in one day. A wet system for one room takes 1–2 days, while a whole-house wet installation for an average property usually takes 3–7 days including screed laying and connection to the boiler. Most Lisburn and Castlereagh installers can give you a detailed timeline after an initial site survey.
In most cases, no. UFH installation is considered permitted development in England. However, if your property is listed or in a designated conservation area, you should check with the local planning authority first. Any gas connections must be carried out by a Gas Safe registered engineer, and electrical work by a Part P certified electrician.
Look for Gas Safe registration (for wet systems on gas boilers), NICEIC or Part P certification (for electric systems), and membership of trade bodies such as CIPHE or APHC. Ask specifically about their experience with underfloor heating — not just general plumbing or electrical work. Check Google reviews carefully and ask for references from previous UFH jobs. All businesses in our Lisburn and Castlereagh directory have verified customer reviews.
Yes, in a well-insulated property, a correctly-sized UFH system can be the sole heat source. Modern systems with room-by-room thermostatic controls give excellent comfort and efficiency. In older or poorly insulated properties, UFH is sometimes combined with a few radiators in rooms with high heat loss. A qualified installer will carry out heat loss calculations to determine the right approach for your home.
Bathrooms are one of the most popular and cost-effective applications for UFH, particularly electric systems. A heated tile floor eliminates cold-morning discomfort and helps keep the room dry, reducing mould. Electric mats are typically installed under tiles in a day, with minimal disruption. Many Lisburn and Castlereagh plumbers and tilers offer this as part of a bathroom renovation package.
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