Fireplaces: care with thermal insulation and installation
Installing a fireplace requires special care. After all, it is necessary to be concerned with several aspects such as thermal insulation, which has the important function of protecting environments and keeping the temperature stable.
In the case of fireplaces, as well as ovens or barbecues, insulation is essential for the safety of users and also for the durability of the equipment.
That’s because the insulation is responsible for ensuring that the bench or wall that will receive the installation will not suffer changes due to the heat generated on site.
The lack of insulation, or the inefficiency of the installation, can even cause the melting of materials and the occurrence of fires, due to the accumulated heat.
In this context, thermal insulation ends up being essential for the safety of people who frequent the places where fireplaces are installed. That’s why knowing how it works and how best to install it is so important.
The insulating material
To know exactly which insulating material is suitable for each case, it is necessary to understand the role that insulation will have.
Certainly, the insulation of a fireplace will be different from that used for the manufacture of sandwich tiles, although the functioning is similar.
The choice of material depends on the maximum heat capacity generated by the fireplace, as the insulation varies according to need.
So, in general, it is the quality of the surrounding materials that will guide the choice of material.
To get an idea, if the intention is to install the fireplace above a concrete bench, a simpler material can be used.
However, if the fireplace surround is to be lined with woodwork or granite, the insulation needs to be stronger. Therefore, it is necessary to pay attention to the heat resistance of materials.
In general, insulation is usually done with blankets or boards. However, each material has different specifications.
The blanket is the most suitable option for situations that require malleability, such as thermal insulation for roofs, for example. It can be folded and cut for an efficient fit.
There are different types of materials, and the choice will depend on the heat emitted by the equipment:
- From 50º C to 80º C: expanded polystyrene (styrofoam);
- From 80º C to 100º C: polyurethane;
- From 200º C to 550º C: glass wool;
- 200º C to 750º C: rock wool;
- Up to 815º C: calcium silicate;
- Up to 1400º C: ceramic fiber.
It can be said that the complexity of the material increases with the heat emitted by the equipment. Regarding the temperatures that the fireplace can reach, it is worth consulting the manufacturer.
Unlike blankets, boards are hard surfaces. They are ideal for installation in straight places without rounded corners and, therefore, can also be used for some models of fireplaces.
The most common materials are vermiculite, expanded polystyrene, cork, cellulose or polyurethane and polyisocyanurate foams.
How to make good insulation for fireplace?
One of the biggest mistakes in installing a fireplace is trying to do it without technical guidance.
Just like an electrical building project, it is a service that requires technical knowledge and experience.
For this reason, it is necessary to hire an expert professional to indicate the most suitable materials and make a safe installation. The same applies to maintenance, whether it is a routine action or caused by damage.
In addition, it is necessary to pay attention to the manufacturers’ indications, both for the fireplace itself and for the thermal insulators.
After all, ignoring the specifications can lead to serious problems for the equipment and installation environment.
Another mistake is to build in the fireplace without space for expansion. It is necessary to leave a gap between insulation and coating, because the air pocket also serves as protection. Otherwise, the insulation may not work or cause an accident.
The ideal is to foresee the installation of the fireplace in the project, from the beginning of the construction or renovation, so that each action is carried out at the right time.
In the end, post-construction cleaning reveals the beauty and functionality of the installation, ready to warm up the environments, with a lot of charm and style.
In the case of alcohol fireplaces, the main care is regarding the handling of materials. For this, it is necessary to use the metal rods, as it is possible to light or extinguish the fire with less risk.
Gas fireplaces can have remote controls and sensors. They prevent the release of fuel in the absence of fire.
Many people dream of installing fireplaces in their homes, with all the comfort and elegance they add to indoor environments.
However, it is necessary to pay attention to safety at all times: during use and, especially, during installation and maintenance, opting for adequate insulation.
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