Page 19 - Catalogo Online Navello

for the windows and doors. The sound insulation is
measured with decibels (db), and is denoted by Rw
(C; Ctr). The greater the value the better is the sound
insulation. It is important to remember, however, that
Air permeability Thermal transmittance the noise curve is a logarithmic type, for this reason,
Test method UNI EN 1026 UNI EN ISO 10077-1 and 2 for example, lowering the noise by 3 db means, in a
Classification UNI EN 12207
discussion between two, eliminating the noise caused
The frames have a strong influence on energy by a person! The insulating capacity of the window
It indicates that a window can filter the air in the saving in a house through air-permeability and frame is closely linked to the glass soundproofing
event of a pressure difference between the inside and thermal transmission. A low thermal transmittance power, as well as to the number of seals inserted
the outside. There are 4 classes of performance, the value is necessary in order to reduce the heat loss on the frame. It is possible to choose between
major class, which provides the fewest air infiltrations, of the building. The measurement for windows different levels of noise reduction of Navello windows
is 4. A low air permeability ensures a better living is Uw (w/mqk), the thermal transmittance of the depending on the intensity of the external noise.
comfort and lower heat dispersion towards the glass influences it in a decisive way (Ug). The type
outside, thus contributing to saving energy. of material, the wood is worse conductor than
aluminium, so it is better, (wood: λ=0,13 - PVC: λ=0,17
- alluminium: λ=160) and the leaf and frame thickness
(a window frame with a thickness of 92 mm insulates
more than 55 mm) are important factors, too.
The higher cost of a window frame with a low Certified escape
thermal transmittance value (Uw) must be assessed doors
Wind resistance considering the savings that you will get over time due UNI EN 14351-1
Test method UNI EN 12211 to reduce heating costs.
Classification UNI EN 12210 Navello front doors, provided with crash bar, have
been certified for escape routes since December
It indicates that a window can keep its functional and 2014. Doors on escape routes, without fire and
performance characteristics thus ensuring the user smoke-resistance characteristics, introducing to safe
safety even under extreme pressure and depressions locations, are subject to first level-CE certification of
that simulate the action of wind. There are 5 classes compliance. This means that the control on Production
of performance, according to the pressure, and Sound insulation is not the responsibility of the manufacturer, but
three classes (A B C) for the acceptable deformation, UNI EN ISO 10140-2 subject to monitoring, verification and approval by a
the best class being C5. A high wind resistance is a UNI EN ISO 717-1; UNI EN 14351-1 third Notified Body. In addition to this, each escape
guarantee of greater security for the people in the door, put on the market, must be accompanied by
house. The ability of a house to protect from external the Declaration of Performance, showing the number
noise is an increasingly important requirement for of the certificate issued by the notified body and the
living comfort. The designer, depending on the type main technical features of the frame. The entrance
of building and the external environmental noise doors Novecento, Omero and Nuvola meet the
alleged, is required to define the sound reduction requirements of the legislation.

Water resistance
Test method UNI EN 1027
Classification UNI EN 12208

It indicates that a window can prevent water
infiltration under the action of strong pressures
which simulate the action of wind. There are 9
classes depending on the speed of wind, the class 9A
indicates that the window frame prevents infiltration
of water up to a wind pressure equal to 600 Pa (115
km/h). A good resistance of the window ensures best
comfort.

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