The Warmafloor Tacker system is the most widely used for screeded floors because of its versatility and ease of installation.

Warmafloor Tacker floor insulation panels are available in any thickness and various insulation materials, providing solutions for any floor requirement.

The floor insulation panels, whilst generally supplied in expanded polystyrene EPS, are also available in polyisocyanurate (PIR) or in extruded polystyrene, providing extra strength or greater “U” values.

Warmafloor Tacker floor insulation panels have a hessian-based polyethylene foil laminated to the surface of the panel. The foil provides a gridded reference for correct pipe spacing and fixing and is also water resistant.

Edge insulation is laid around the area to be heated; this provides a barrier against perimeter heat loss and for screed expansion. The Warmafloor Tacker insulation panels are then laid over the complete floor area. Warmafloor PB pipework is then laid out in circuits and secured into the Tacker panel by specially designed staples, installed with a Tacker gun. These staples are fully retained by the fabric thereby preventing the pipe lifting during screeding. The underfloor pipework is connected to the Warmafloor manifold, filled with water, and pressure tested for screeding.

As soon as practical after the installation is completed, the screed should be laid over the system to the required depth.

Frequently Asked Questions

If you have a specific set of U-values and thermal performances to meet, especially when it comes to ground floor slab insulation, this is a query best left to an architect or structural engineer. They will be equipped to take into account all necessary elements of the building fabric, to reach a solution that meets the criteria for the relevant Building Regs.
For the purposes of laying our pipework, we have fixing systems to suit all thicknesses of insulation. For plastic clipping systems, the minimum is 25mm. If less is used, or none at all, we can offer our Castellated Plate system.

We do not have an in-house screeding division, but we are prepared to sub-contract a screed installer as part of our package.

For optimum performance, and avoidance of potential future cracking or weakness, we would recommend a minimum of 65mm if a sand-cement screed is used, or 55mm if a liquid screed is used.

However, screed manufacturers may be happy to guarantee their products at lower levels. Please contact your preferred screed contractor for clarification.

Warmafloor Tacker floor insulation panels are available in any thickness and various insulation materials, providing solutions for any floor requirement.
The floor insulation panels, whilst generally supplied in expanded polystyrene EPS, are also available in polyisocyanurate (PIR) (eg Celotex) or in extruded polystyrene, providing extra strength or greater “U” values.

In the Tacker system, floor insulation, edge insulation, moisture barrier, fixing system and pipework are installed utilising Tacker clips, then covered with the appropriate screed and final floor finish.

Warmafloor systems can be fitted to any type of concrete floor construction which has a screed topping.

The U-value of a material measures how effective a material is as an insulator. The lower the U-Value, the better a material is as an insulator. According to the building regulations the U-Value for floors should be no greater than 0.25 W/m²K. We will advise on the type and thickness of insulation required to bring the floor U-Value under 0.25 W/m²K. Read more on U-Value calculation

Surface heating enjoys a 40% shorter installation period and generates 1-2 weeks’ preliminary savings than conventional methods. Warmafloor also uses its own fully trained workforce, rather than using subcontractors, to ensure that projects are completed on time and on budget.

Surface heating is a reliable whole-life system that requires no maintenance. It lasts the entire lifetime of a building, unlike radiators that need replacing at least twice. There is no need for manual operations, such as bleeding or painting. Our pipes are guaranteed for 100 years; ten times longer than steel and copper radiator pipes which require routine repairs due to joints which leak, attract scale and decay.

A few years ago, the application of surface heating to any building involved a premium in additional capital cost. This was not so much for the system itself, but rather for the insulation layer required to prevent downward heat loss. Now Part L regulations demand insulation in the floor whether you heat it or not. In fact, most of the projects we get involved in have layers of insulation with a thermal performance far in excess of that required for the heating system.

Today, the cost of the insulation material and the time taken to install it are no longer part of the surface heating package, so the best solution is now often the least expensive too. Surface heating and cooling systems offer cost savings as they operate at lower air temperature (1-2˚C lower to provide same level of comfort). Cyril Sweett and The Trade Association for Surface Heating and Cooling (UHMA) research reveals that a traditional radiator system costs 25% more over a 30 year period that a surface heating system. There is also a reduction in building heat losses and energy consumption and the heat source can operate at its highest efficiency. The greatest savings will be in rooms or spaces with high ceilings, as our systems heat only the occupied zone.

Savings in the region of 30-50% are possible. In rooms with lower ceiling heights, the savings will come from the lower operating temperatures of the system, together with the reduced air temperatures, to give savings of 10-20%. There are also no costs attributable to painting and decorating and no replacements due to vandalism of radiators etc. We find that this is often a key criteria for specifiers.

Yes. Our surface heating and cooling systems are compatible with virtually all types of floor covering. The best floor coverings for use with surface heating are hard surfaces as they have the least resistance and transfer heat effectively. Vinyl floor covering have a recommended maximum floor surface or sub floor temperature that they can operate at; if a higher temperature is used it can damage the floor covering. Manufacturers’ data sheets should be checked to confirm the covering’s suitability. Suitable adhesive should be used as per manufacturers’ recommandations. See flooring section

Yes. Our surface heating and cooling systems are compatible with virtually all types of floor covering. Recent research has shown that due to the open weave of most carpets they do not restrict the flow of heat from underfloor heating systems to any great degree. However carpet underlay and foam backed carpets do. Carpets and underlays have thermal resistance characteristics that will reduce the heat output when fitted over an underfloor heating system. To counter act this resistance, the system design can be adapted to foctor int the extra heat output needed. Some floor covering manufacturers stipulate a maximum floor temperature for their product which also need to be taken into account. See flooring section

Yes. Our surface heating and cooling systems are compatible with virtually all types of floor covering. The best floor coverings for use with surface heating are hard surfaces as they have the least resistance and transfer heat effectively. Laminate, engineered wood and timber floor coverings can be fitted with underfloor heating. The system design must factor in the manufacturers’ guidelines as often a maximum floor temperature is stipulated for wooden floor coverings. It is also important to follow manufacturers’ guidance on moisture content during fitting. See flooring section

Why Warmafloor

The UK’s leading provider of underfloor heating and cooling systems

Request a
callback

  • This field is for validation purposes and should be left unchanged.

Case Studies

Demonstrating expertise across the built environment

Support Services

We are keen to share the knowledge and expertise we have gained in becoming the UK's leading underfloor heating specialists