What should you know before you choose an underfloor heating system? Below we discuss costs, expansion joints, and heat output. After you’ve read this article, you’ll be well on your way to making an informed decision. What is the best underfloor heating system for your home? The answer may surprise you. Read on to find out more! Until then, keep these tips in mind to make the most informed decision.
In-floor heating
A typical in-floor heating installation from vloerverwarming for an upper floor involves installing liquid tubing under a slab. These tubes are secured by a set of plastic clamps or pneumatic staples. The stapler attachment adjusts the depth of the staple so it nests against the tubing. The subfloor is then poured to a thickness of about one and a half inches, and the tubing is inserted. It is then covered with an underlayment.
Cost
The cost of underfloor heating for upper floors is dependent on the type of system chosen. The two types – wet and dry – come with different installation costs. Wet systems are cheaper to install, but require more labour and are largely ineffective in dispersing heat. On the other hand, electric systems are cheaper to install, but only work in smaller spaces. As a result, they are less suitable for larger homes.
Expansion joints
When planning to install underfloor heating on an upper floor, you will need to use expansion joints. These joints absorb thermal expansion and shrinkage and are required in environments of more than 40 m2 surface and eight metres in length. They are made by cutting the supporting layer until the insulation is reached, filling the gaps with a plastic material such as polyurethane foam. You can also make contraction joints in correspondence with door jambs. They should be around one third of the thickness of the screed or at the heating tube.
Heat output
The heat output of underfloor heating for upper floors can be calculated using the combined radiant and convective heat transfer coefficients. Radiant heat transfer is a constant due to the Stefan-Boltzmann constant. Convective heat transfer occurs through forced air movement from fans and people or objects moving within the space. Other types of heat transfer include parasitic heat transfer between heated and cooled pipes and other building components such as air conditioning ducts. This latter form of heat transfer can be influenced by the thermal conductivity of the soil.
Compatibility with flooring
There are several types of flooring that are compatible with underfloor heating for upper floors. Some flooring materials are ideal for upper floors, while others do not. Some woods, such as oak, can even be heated at up to 27degC. Other options include laminate and vinyl flooring. Carpets with a minimum tog of 2.5 do not have a negative impact on heat transfer. These flooring materials may also be suitable for lower floors if the underfloor heating is placed on top of them.
Safety
Underfloor heating is safer than most people think. The system does not expose the floors to super-hot surfaces, sharp edges, or small parts, removing common hazards. Electrical underfloor heating systems use a cell-based design, which means that any spark or moisture will not affect the rest of the cells. When the system is damaged, it will automatically turn off. This safety feature is a significant benefit, particularly for elderly people who are more susceptible to electrical shocks.
Is it a good option for children’s bedrooms
While central heating is a good option for bedrooms, it can also be expensive and uncomfortable. If you are unsure whether underfloor heating is suitable for a child’s room, consider the safety and stability of your heating option. For instance, underfloor heating can be connected to gas or solar energy, and can even be fitted with timers to reduce the impact on energy use.
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