How to reduce expensive bills with thermal insulation of roofs and walls

08/06/2022 – With Italians struggling with the rise in electricity and gas bills, the topic is too proper insulation of buildingsan intervention that today can also benefit from the Superbonus tax deductions.
To increase the energy efficiency of buildings in fact, it is necessary to improve the level of thermal insulation of the house, in the summer and winter months, which reduces energy needs.

Also according to ENEA data (National Agency for New Technologies, Energy and Sustainable Economic Development) the creation of external thermal insulation and the insulation of the roof can reduce heat loss by 40-50%thus reducing the cost of cooling or heating.

Redevelop the homes of Italians and make them less energy intensivemore sustainable and also more comfortable mission for Ravago Building Solutionsleading in Europe in the production of XPS solutions for thermal insulation, and partner Casa Clima, which has developed a number of solutions for building insulation: RAVATHERM ™ XPS X.
RAVATHERM ™ XPS X high performance extruded polystyrene foam is the only one that incorporates particles of pure carbonhence the original gray color. This feature makes it possible to reduce heat dissipation and increase the thermal resistance of the product compared to traditional XPS, and thanks to the structure with ≥95% closed cells, it provides high resistance to water vapor passage and long-term energy efficiency. ; in addition, the high long-term compressive strength makes it possible to meet the needs of designers and companies.

Well-insulated roofs and walls can make a difference to your energy bill And Ravago Building Solutions is on a par with construction professionals with complete and executive solutions but also with one dedicated advice.

«We offer advanced solutions, our XPS is the only one with built-in pure carbon particles compared to standard solutions – emphasizes Andrea Angeli, commercial director of Ravago Building Solutions -. Our team works side by side with designers and companies to advise on choosing the right insulation but also on a state-of-the-art installation ».
Choosing certified and efficient products such as RAVATHERM ™ XPS X is only the first step to an advanced renovation. Even the best insulation product, if designed or installed incorrectly, may not deliver the promised performancefor this reason, when proceeding with a building’s thermal insulation intervention, it is necessary to take into account the key rules in order not to make some very common mistakes.


Distraction, negligence or in some cases incompetence can cause problems laying the insulation boards, resulting in waste of resources and time on the construction site or in the worst case even legal disputes. Among the small and big mistakes not to make, the Ravago Building Solutions team has selected four “musts” to avoid.

1. Summer storage: do not leave the insulation material in the sun
High temperatures and / or direct sunlight can distort XPS panels for this reason, especially in summer, it is necessary to protect the panels from direct sunlight. Ultraviolet radiation, which affects polystyrene directly and for a long time, superficially degrades the material and compromises its functionality. To avoid deterioration of the product left unpackaged, it is recommended to protect it with suitable layers, for example with polyethylene film and with light covers, while the reflective facades can damage the XPS panels. Dark or transparent covers can increase the effect of solar radiation and are therefore not suitable for storing insulation materials.

2. Insulation on flat roofs: do not neglect or delay the application of the ballast

Covering of inverted or “inverted” roofs is one of the most valid systems for thermal insulation of flat roofs. The insulation is laid over the waterproof membrane, which is thus protected during construction work and over time. RAVATHERM ™ XPS X is the perfect material for this application thanks to the closed cell structure with high mechanical properties and without water absorption. The correct design of the insulation of inverted flat roofs involves a number of factors, including proper placement.
In the static calculations of the roof, it is important to take into account the permanent overload of the ballast (gravel, squares, etc.) which must cover the insulation boards completely and must be heavy enough to avoid unintentional lifting due to the influence of the wind or floating due to rainwater. The ballast in the inverted roof also protects the panels from UV rays and the risk of deformation on hot days, for this reason it must be used as soon as possible.

3. Careful machining: avoid transverse joints and fold the insulation materials well

Closing the joints can take a long time, but to guarantee the efficiency of the insulation system it is necessary lay the panels in an orderly and well-placed manner, so that no cold bridges are created. When the insulation boards are not well joined, a gap is created which in the subsequent reinforced leveling phase will be filled with the mortar. At these points, of course, the thickness of the smoothing will be greater than on the board and there will be greater absorption of moisture, which will highlight the joints with consequent heat loss and in some cases the formation of mold and moisture.
Cold brothers created due to incorrect posture they make a difference not only for performance that can affect up to 20-25% of dispersionsbut also for the durability of the system.

4. Never coat without accessories: correct fitting of adhesive and plugs
The gluing of the plates in thermal insulation systems it is a delicate operation and the adhesive is the key element. The adhesive must be laid correctly (with edge edge and 2/3 center points by light insulators such as polystyrene) to prevent cracks between the joints of the boards, due to water penetration, blistering or detachment of the insulation itself.
One mistake to avoid is to make the curb at the edge of the panel without respecting the margin usually 2 cm. When the plate is pressed on the surface, the mortar comes out concentrated in the joints between the plates, causing the wrong juxtaposition and the inevitable cold bridge.
Also that mechanical fastening it is a phase that is often neglected to shorten shutter speeds. The dowels support the weight of the insulation and resist the influence of the wind; therefore, they must always be delivered in integration and addition to the adhesive in the minimum number prescribed in relation to the height of the building and the strength of the wind.
A typical mistake of the installer is to push the plug too deep and grout the hole with mortar to restore the flatness of the panel. In accordance with the head of the block, the increased smoothing thickness determines a greater absorption of moisture, and the repeated dry-wet cycles cause the chromatic change of the facade.

RAVATHERM ™ XPS X includes solutions for all application needs, from roofing to walls, from floor insulation to cladding, industrial floors to parking roofs:
– RAVATHERM ™ XPS X 300 SB (civilian floors, walls, flat roofs);
– RAVATHERM ™ XPS X 300 ST (civilian floors, walls, flat and sloping roofs);
– RAVATHERM ™ XPS X 300 SL (civilian floors, foundations, walls, flat and sloping roofs);
– RAVATHERM ™ XPS X 500 SL (industrial floors, foundations, parking roofs);
– RAVATHERM ™ XPS X 700 SL (industrial floors, foundations, parking roofs);
– RAVATHERM ™ XPS X ETICS B (external insulation system).

The CAM-certified RAVATHERM ™ XPS X-Series delivers:

λ from 0.030 W / mK;
compressive strength from 300 to 700 kPa;
thicknesses from 20 to 200 mm and dimensions width 600 mm and length from 1,250 to 2,400 mm for any need and to avoid spillage of material;
three types of profiles: sharp edge, feather-and-groove joints and step rake;
decrease in energy consumption;
increased living comfort
Ravago Building Solutions Italy at

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