Very light fiberglass window sill makes work easier!

Window sill changes with construction

While construction is always evolving and changing, this was not true for window sills for a long time. This created a problem because the existing types no longer fit modern insulated facades due to their weight. Therefore, Raamdorpelelementen BV comes up with a completely new type of window sill made of glass fiber.

It took more than half a century, but now the new IsoSill window sill is here. Bart Tenbült, director-owner of Raamdorpelelementen BV from Bladel: "Window sills have always had a stony base, but what you see now is that insulation is being placed against the outer wall. Then the existing sills are too heavy, they need support, which causes a thermal bridge under the windows." 

So Tenbült went looking for an alternative. "We were looking for a light material. Here you can think of aluminum but this does not have the right look. Then we tried to make the existing window sills lighter, but advantages of materials then become disadvantages. In the end, a completely new product turned out to be the best solution. IsoSill window sills have a core of EPS (tempex), which is light and insulating. The outer layer is GRP: this also has insulating properties and is very strong. A 3mm thick window sill weighs only three pounds per meter due to this combination. This is ideal for projects with insulation on the outside."

Looking for total supply

Raamdorpelelementen BV has over 19 years of experience in the field of window sills. Tenbült is no stranger to innovation. In fact, since 2001 Raamdorpelelementen BV has been gluing loose window sills into convenient but heavy elements. These prefabricated window sills are made in one piece in our own factory. This type of window sill is delivered glazed or unglazed and there is a choice of various colors such as Stone Red, Anthracite and Blue Green. Then these elements can be tightly assembled in no time. This is faster and flatter and is possible with handwork. 

"Why brick individual window sills when you can tightly assemble a complete window sill element in no time? Ready-made window sills are easy to install. A lot of contractors, handymen, housing associations and architects have already taken advantage of them." 

No masonry skills are required for this product. "We deliver everything nicely sorted in the recognizable red steel bins or on red racks. The guys just lay down a window sill element like that without any special trade knowledge. So the contractor doesn't have to send a separate mason. Window sill elements make renovation work unprecedentedly simple with the least possible inconvenience to the residents: at the end of the day, everything is ready."

In addition to precast window sills, Raamdorpelelementen has been supplying window sills made of natural stone for two years. Tenbült: "In the future, this will also include concrete. In this way we want to become a total supplier, with two unique products: ceramic window sill elements and IsoSill. We supply window sills for 12,000 homes a year throughout the Netherlands. It's easy to expand our product range." 

Raamdorpelelementen BV can be reached online 24/7 via the website Raamdorpel.nl for quotes and orders within a minute.