Underfloor heating systems are ideal with wood floors and the system truly lets you to enjoy this natural floor finish. There are a couple of things to consider with wood floors and underfloor heating and we’ve listed these for you in this post.
• Thickness and density of the wood floor
The conductivity of wood is less than stone or tiles so the thinner the wood is, the higher the heat output of the system and the faster the heat up time. The maximum thickness is 18mm as any thicker than that will hinder the efficiency of the system. If desired, thicker boards can be used, but these will result in a lower heat output. The density affects the heat transfer where high density floors transmit heat better.
• Suitability for use with underfloor heating
Underfloor heating systems can be used under almost all wood floors, but it’s advisable to check with your floor supplier and manufacturer to make sure your floor is compatible with the system.
The better the underfloor insulation, the more energy and cost efficient the system is. A number of insulation types to use with the system are available, from insulation boards to special under and overlays (depending on the system).
• Moisture content of the wood flooring
Engineered wood is more stable than solid wood, but it is important that the moisture content is sufficient with both types. This is typically 10-11% when the boards are laid, which will reduce to 8-9% when heated. The best thing to prevent any problems is to check the moisture content with your supplier and make sure that the flooring is transported and stored in a dry environment.
• Humidity of the room
Wood is a natural material and the variations in humidity levels can lead to shrinkage and expansion of wood. Air humidity should be maintained between 40% and 60% at all times.
• Maximum floor temperature
The maximum floor temperature wood floors are heated to should not exceed 27°C. This is achieved by having a thermostat with a floor probe which automatically controls the underfloor heating so that the temperature won’t raise above the 27°C. Warmup has a selection of thermostats that are ideal for controlling underfloor heating under wood floors.
• Heating controls
The accurate controllability of the system is essential with the top temperature restriction of 27°C. Temperature accuracy ensures no energy is wasted and that the floor heating can be safely used under wood floors.
For floating and nailed floors it is advisable to use a specialist wood floor underlay over the heating system. This needs to be thin and not the foil-reflective type. The maximum TOG is 2.5 as any thicker than this will reduce the heat output too much.
• Type of system
Both electric underfloor heating and warm water underfloor heating are suitable for use under wood floors. The type of system usually depends on the project type and your preference. Electric is usually preferred in refurbishments as it does not raise floor levels. Warm water underfloor heating is ideal for new builds and the combination of both, hybrid, provides a perfect heating system for a whole house.
• What makes a reputable UFH supplier
There are different solutions for underfloor heating for wood floors and when choosing an underfloor heating supplier for a wood floor, you should at least find out how long they have been trading for, what their guarantees are like and have they got technically skilled staff to help you out should you have any problems.