When the winter cold breaks down on the houses, the thermal insulation is essential if you want to enjoy a pleasant warmth inside your home without seeing the rise of the costs for heating.
In fact, much of the heat used to heat their homes is likely to be dispersed due to the bad insulation of the walls, the ceiling or the floor of the house.
For this reason it is essential to adequately insulate the most dispersive points, also through substantial works that, besides taking advantage of the current tax deductions, will produce over time a saving in the bill.
How to choose the thermal insulator
The insulating power of thermal insulating materials is linked to the value of the ‘thermal conductivity’ (lambda ‘λ’); The smaller the value of the greater λ will be the insulating power of the material. Consequently, to isolate your house well, it is advisable to choose materials with a low thermal conductivity.
One factor to consider is the thickness of the material; Generally the higher the thickness the better the insulation will be. Today, however, there are materials that can isolate with contained thicknesses.
Another factor to consider is the thermal displacement, in other words the time (in hours) used by the heat to pass through a material and consequently reach the interior of the house.
It is also necessary to evaluate the breathable power of the material, that is the ‘Vapour Diffusion Resistance’ (MI ‘µ’); As for thermal conductivity, the smaller the value, the more the material is breathable. A breathable material improves thermal insulation because it reduces the possibility of condensation.
Lastly, with the same fundamental characteristics, it is advisable to prefer non-toxic, durable (e.g. immune from mould or parasites) and fire-resistant insulants.
There are various types of insulating materials: synthetic insulators (Polyester, Sintered expanded polystyrene (EPS) or extruded, expanded polyurethane, expanded polyethylene, foams, etc.), minerals (glass wool, rock wool, clay Expanded, expanded perlite, expanded vermiculite, felts, etc.) and vegetable ones (wood fibre, mineralized wood fibre, cellulose fiber, hemp fibre, flax fibre, cork etc).
How to isolate the walls
The most dispersing walls are the perimeter ones bordering the external environment; As a result they will be the first ones to be insulated.
Two methods can be used for the insulation of the walls: external coat (inserting the insulating layer on the external walls of the dwelling) and internal coat (insulating panels inside the apartment).
For those who live in a villa or an independent house, the best way to achieve good insulation is the insertion of an external coat; Its realization could be more complicated in the condominiums, where it serves the authorization of the owners. In these cases, however, the advantages (ecobonuses) are greater, with deductions reaching up to 75%.
In addition, the outer coat, although more expensive than an interior, allows you not to reduce the cubature of the house, do not disturb the owners during the work, and prevent mold and condensation.
If the insulation of the external walls is not possible, an internal coat can be made by applying insulating panels directly on the internal walls, or by creating insulating walls.
How to isolate the ceiling
To improve the insulation in roofs, depending on the circumstances, you can act from inside or outside. Those who live in an independent house or on the top floor of a pluriplane building can apply insulating panels inside the House or act from the outside creating a warm roof or a cold roof (ventilated roof).
Those who live in apartments with high ceilings (dispersing environments) can create false ceilings to reduce the volume of the heated environment and improve in thermal comfort of the entire room or house.
Isolating walls and ceilings: solutions and technologies
Here is an overview of products and technologies on the market for the isolation of their home.
Insulation Systems for Coats
The insertion of an external coat allows to reach the values of thermal transmittance of the extremely low perimeter walls, to eliminate the thermal bridges, to make the best use of the thermal inertia of the masonry and to improve the thermal comfort of the house.
To achieve it you can opt for Knauf thermal coat system, with selected components according to the specific situation.
Another example is Neopor ®-External insulation with coat that gives the vertical closure an optimum insulating power, cancels the thermal bridges in correspondence of the AC carriers and protects the structure reducing the mechanical stresses Due to thermal expanations.