When to plan underfloor heating in a new build

Start with the plan of the home you will actually build

Provide the updated layout and mark any planned changes. Moving a partition, adding a study or opening the kitchen into the living room can change the way zones are organised. Designers, builders and installers should work from a shared version, avoiding each trade using a different plan.

Accompany it with an explanation of use: regularly occupied bedrooms, occasional rooms, schedules and comfort expectations. The homeowner does not need to decide circuit routes. Their contribution is to describe how people will live in the home, so the technical proposal responds to those needs.

Coordinate the floor build-up with the finishes

The finished level depends on the complete construction, including the subfloor, insulation, radiant system and flooring. That build-up affects access points, stairs and junctions with other areas. Early coordination avoids thickness becoming a problem after doors or finishes have already been ordered.

Do not treat the finish as a purely decorative decision. Provide its technical data sheet and confirm compatibility of the complete construction. Mention any rooms that will have different materials. The system and flooring choices need to be reviewed together, including installation instructions and conditions of use.

Reserve accessible spaces for the equipment

A water-based system needs space for the heat source, manifolds and their pipe routes. The manifold cabinet must be accessible for opening and servicing once the home is finished. It is better to resolve a conflict with furniture now than discover later that part of the interior fit-out must be dismantled to inspect the installation.

Controls also need suitable positions within the home. Explain where there will be tall furniture, areas exposed to sunlight or other features that could affect measurement. If you want mobile control or integration with other installations, include this in the brief so the required components and connections can be checked.

Include checks and waiting periods in the programme

A complete plan distinguishes system installation, testing, closing the floor layers and commissioning. Solutions using screed or adhesives involve the conditions and times specified for those materials. A generic heating start-up deadline should not ignore the products actually being used.

Agree who confirms that each stage can begin and how the checks are recorded. Pressure to hand over the building should not force an improvised heating start-up. Changes to materials or the programme also need communicating to the installer and the flooring contractor.

Make sure the quotation reflects these decisions

Ask the scope to identify each party’s work and how it will be coordinated. Red Málaga’s approach of one company for the installations lets you discuss underfloor heating alongside air source heat pumps, controls and other needs in the home. The specific scope should be defined in the proposal.

• The layout and zones used as the design reference.
• The system, proposed floor build-up and finishes considered.
• The equipment, controls and connection work included.
• The planned checks, commissioning and explanation of use.

More common questions

When should the flooring be chosen?

Before finalising the design of the complete floor. If you have not yet chosen a product, share the alternatives so their requirements can be assessed, rather than assuming an incompatible solution will be suitable.