The Saimex Srl company specializes in the production and sale of structural profiles in composite material – Wood Fiber and Glass Fiber – and in particular in the production of THRESHOLDS and parts of windows in FIBERGLASS, exploiting the properties of the material of thermal insulation (lambda value (λ) = 0.25) and resistance to loads up to 1000 kg.

Saimex profiles, thanks to their insulating structure due to the composite material they are made of and the thermal break, are used as thresholds for tile-and-slide systems and as structural parts of windows and doors.

We are one of the leading manufacturer companies of GLASS FIBRE THRESHOLDS for WINDOWS for the most important European brands.


Among the main features of Saimex fiberglass THRESHOLDS:

• Thermal insulation

• Mechanical properties comparable to steel

• 100% waterproof

• Total absence of maintenance; since Saimex thermal break windows and doors are resistant to the outside, it guarantees less maintenance costs on the final product.

• High resistance to corrosion and sea water

• Resistance to salt mists

• Anti-condensation

With Saimex fiberglass profiles it is also possible to prevent or eliminate thermal bridges.


The company Saimex srl is also highly specialized in the realization of COMPLEX SECTIONS AND CUSTOM PROFILES, and we will be happy to give you support with your projects.

Saimex s.r.l. has in fact a technical office always available to listen and meet your needs. Our team of engineers has a long experience in the design and structural calculation of fiberglass profiles for windows and thresholds for sliding windows.

We have also developed a type of smooth surface finish that does not require further coating, or the application of a protective film and we offer the possibility to choose from a wide range of RAL colors and metallic colors.


Thanks to the thermal properties of composite materials, the doors, windows and thresholds for tile-and-slide systems in fiberglass are important for the energy insulation of homes and buildings and for the Casaklima project which allows buildings to save energy (by reducing consumption) and economical to sustain themselves.

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Pultruded fiberglass sills represent a very innovative solution in the building sector. When choosing windows and doors, for example, it is necessary to ensure an extremely long life cycle to the structure and, above all, guarantee an excellent level of thermal insulation for the indoor environment.

Pultruded fiberglass sills are also characterized by another feature, that it is to say the possibility of being provided with a smooth finish, a very advantageous option from the aesthetic point of view. Thanks to pultruded fiberglass sills it is possible to reconcile different aspects that have become indispensable in the buildings sector.

The users do not only search for an optimal efficiency from a sustainable point of view, but also keep an eye open to the aesthetic appearance, in order to create a harmony between a window and door or a facade and the indoor environment.

All this is possible thanks to the presence of different colours. This aspect, combined with the fact that profiles are more reduced than those made of aluminium, provides a really interesting aesthetic result that can adapt to different indoor solutions, so that the final user can live comfortably in your house, paying attention to aesthetics that makes your home a pleasant place to live in.

The possibility of choosing among pultruded fiberglass sills with smooth finish– products which have a very different application range compared to sills provided with non-slip finish – is another advantage offered compared to aluminium that implies greater maintenance and an aesthetics which is, in the case of windows and doors, significantly more bulky than as it occurs with pultruded sills.

This happens for the simple fact that a double or triple chamber is not required with fibreglass pultruded profiles.

And ultimately their application is fully customizable and guarantees a perfect result for windows and doors and facades to the final user in line with the most innovative sustainability standards.

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