Buy high quality sun protection films

Sun protection films can be distinguished by their intended mounting position: interior and exterior films. Additionally, reflective sun protection films come in varying degrees of silver mirroring from light to dark, or in different coloured dark tints (on one side) such as bronze, copper, metallic blue, or grey. A special option is a light blue sun protection film with a subtle mirror effect.

It is very important to find the right sun protection film for your glazing. Not all glass types and window styles are suitable for interior films. Roof windows or angled glazing should only ever be fitted with sun protection film on the outside. The same applies to thermal glazing, insulated windows, or Perspex surfaces (a special film type is also available for these).

Interior sun protection films only reflect and absorb solar radiation after it has already passed through the outer pane. When applied to glass types other than single glazing or older (non-gas-filled) double glazing, this causes significant heat build-up in the gap between panes -- potentially leading to thermal stress cracks. Therefore, interior sun protection films should only be fitted on single glazing or double glazing that is more than 25 years old (without gas filling).

The level of privacy depends on the tint level of the sun protection film -- the darkest and medium-strength variants can provide privacy under certain conditions: the so-called mirror effect prevents prying eyes from seeing inside a room during daylight. However, at night with interior lights on, the glass becomes transparent from the outside. When lighting is equal on both sides, the glass is transparent from either direction.

You can achieve a heat reduction of up to 86 per cent. There is also a key difference between the darkest interior and exterior variants: with an exterior film, solar radiation is blocked before it reaches the glass, meaning less heat enters the room in the first place. This makes the Sun Protection Film Silver Dark Exterior the most effective option for heat reduction, lowering energy costs for air conditioning and fans whilst improving indoor comfort.

With exterior sun protection film, incoming sunlight is reflected directly at the surface. This prevents heat from building up inside the room. The same principle applies to the film's absorption properties. Rather than being reflected, the sun's electromagnetic radiation is effectively absorbed. This can cause the window pane to heat up considerably. When the sun protection film is applied on the outside, this heat cannot warm the interior.

Exterior sun protection film is indeed more expensive than its interior counterpart. This is due to its special hard-coat finish, which makes it scratch-resistant. The surface consists of a highly transparent acrylic layer that is significantly more durable than the base material. This also makes it easier to clean windows, which tend to get dirtier on the outside. Although interior films are more affordable, exterior films provide the most effective protection against solar radiation.