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Save energy with the best thermal insulators

thermal insulators and electrical self-consumption

As a wise man said “the best method to save is not to spend”; So we present you the best thermal insulation for the home, one of the most effective ways to reduce electricity consumption at home.

The best method to save energy is to have a good thermal insulator in our house. Up to 99% of homes in our country experience unnecessary heat losses due to faulty or insufficient thermal insulation. In addition, Spain is positioned as one of the European countries that buys the most energy, which means that part of the money is wasted and more polluting CO2 is emitted.

How to save energy with thermal insulators?

Good thermal insulation is an excellent way to save energy. It is estimated that each home can save between 30% and 70% in energy, which will also be noticed in the monthly bills.

Where do the heat losses occur? It usually occurs through the facade and roof. This means that it is advisable to invest in a good insulation system. There is a lot of types.

1. Exterior thermal insulation by cladding the façade

SATE or Exterior Thermal Insulation System

It consists of applying a coating prepared with a mixture of mineral mortar and insulating mortar on the facade. It is a special type of mortar, not the classic one that contains cement and lime. This contains mineral elements and insulating aggregates that have the quality of reducing thermal conductivity by 50%. This system can be applied in new buildings but also in old ones in which it is desired to carry out a thermal rehabilitation plan. In addition to benefiting from energy savings, the building and the home will be revalued after the work.

Ventilated facade

This system consists of fixing an insulator with a metallic structure on the façade. This insulation can be made of different materials, but it is generally made up of mineral wool. The metal structure has the function of forming an air chamber that contributes to better and more effective insulation.

2. Insulator injection

This method of thermal insulation consists of injecting a polyurethane foam into the air chambers of the walls. This product offers other advantages in addition to its great insulating capacity. It also reduces outside noise, is non-toxic, does not generate microorganisms, and has a useful life of about 50 years. In addition, it is recyclable and respectful with the environment. Injected polyurethane is achieved through the chemical reaction of two substances: isocyanate and polyol. Combined at a high temperature and with the appropriate pressure, they give rise to this type of insulation.

3. Insulation from the inside: cladding

The cladding is a coating that is installed on the walls of a house, to cover a wall with insulating materials. It can be of different types such as laminated plaster, expanded polystyrene, mineral wool, etc. This is to maintain the temperature of the interior heating and prevent it from escaping. This makes it a great way to save energy. There are three types of cladding: With omegas: The adhesion of the panels is done with screwed profiles. The surface to be covered must be smooth and perfectly dry. Direct: A gripping paste is used for fixing to the wall. The spacing of the should usually be about 10mm. If installed on an uneven wall, the alignment is determined by the overhang. Self-supporting: The cladding is screwed to a metal structure that has space to maintain the insulation in areas of different thickness. Any of these insulators will help to obtain considerable energy savings and enjoy a much more comfortable home.

Install solar panels at home

Although it is not an isolation method, installing solar panels at home is the perfect complement for a well-insulated and energy-saving house to have greater energy efficiency.

Energy self-consumption in Spain is no longer penalized after the repeal of the so-called “sun tax”. Without worrying about the difficulties brought by the law now, we can focus on the investment that it will mean for the family economy to take the step towards photovoltaic solar energy and start saving on the monthly electricity bill.

When considering the installation of solar panels at home, we must be clear about what the objective is going to be:

  • Reduce consumption in the electricity grid, or
  • Carry out 100% energy self-consumption.

Depending on whether we want to reduce the electricity consumption of the electricity grid somewhat or if we want, as far as possible, to be self-sufficient in 100% of the electricity consumption of the home, we will have to carry out a more or less large installation of panels solar and batteries. We must bear in mind that the useful life of solar panels is about 25 years and that the useful life of batteries for energy accumulation is approximately half.

Suppose we want to have a 100% electrical self-consumption dependent on solar energy. The average consumption of a family is around 3,500 kWh annually. We will need a photovoltaic installation that captures about 10,000 Wh, which represents an investment of between € 6,000-10,000, if we take into account the replacement batteries that we will need in a few years. Translated for the family economy, with the current price of electricity, it will take 18 years to amortize the investment in solar panels, but afterwards we will have 7 years of consumption totally free, which will save more than € 3,600 (taking into account the price current fixed rate of electricity).

As can be seen, the initial investment has great benefits for the family economy in the long term and if we take into account that the price of the kWh will probably rise somewhat during these years, possibly the savings in electricity for homes with self-consumption will start earlier.

Dare to take the step and start saving on electricity consumption thanks to renewable energy. Our energy advisers can guide you in everything you need to implement energy self-consumption in your home.

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