Sill that makes the entire frame recyclable

The DTS Varipro sill from lnnodeen offers profile houses a durable sill in standard lengths. A sill program that is modular and can be used by all profile houses. "With our DTS Varipro Plus sills we offer customized solutions that are tested for wind and water tightness in consultation with the respective profile house," says lnnodeen's commercial-technical consultant Roald Haneveld.

Both the DTS Varipro and the DTS Varipro Plus are fully circular. "This sustainable aspect is very important to us as a manufacturer, because we are committed to sustainability. All the sills and products we make are made from recycled materials or are fully recyclable. And of the DTS Varipro Plus, we have all GE reports available that allow us to give customers detailed insight into the sill's origin and performance."

Self-developed raw materials

For the production of the sill programs, the manufacturer uses the in-house developed wear-resistant and unbreakable Hollodeen as raw material. Says Haneveld, "This raw material consists of up to 90 percent recycled material, and the sills produced can ultimately be completely recycled." In addition to sills, the manufacturer also makes structural frames and cladding. For the structural frames, Durodeen is used as the raw material. "The Eco variant of Durodeen consists entirely of recycled material. For the cladding, we developed Compodeen. That consists of 100 percent residual waste, 70 percent biobased residual material in the form of wood fiber, to which we add 30 percent polypropylene from household pmd residual waste. From the resulting mixture we extrude, among other things, cladding," Haneveld explains.

Demand for testing grows

With the DTS Varipro sills, lnnodeen is targeting the plastic and aluminum market. The DTS Varipro Plus sills are custom-designed for each profile house that wants to apply the sill. "In doing so, we see an increase in the number of tests for wind and water tightness of the entire frame. This is becoming increasingly important. Not only for high-rise applications, but also because of good insulation." Especially in the project market, this question is being asked more often. "Both in the renovation market and new construction. A seamlessly closing window frame is increasingly becoming a requirement and also plays an important role in the energy performance of a home. This is where we can mean just that little bit more with our custom work."

Durable frame

The profiles of plastic and aluminum window frames are recyclable, but for the lower sills that are applied, this does not apply in many cases, according to Haneveld. "This is because most of the sills that are used contain fiberglass, which is not particularly durable. Plastic and aluminum window frames with a DTS Varipro or DTS Varipro Plus sill are fully recyclable. This is how we make a truly fully sustainable window frame possible for our customers." On average, there are two to four sills in a home. Haneveld: "The regulations for sustainable and circular construction are becoming increasingly stringent. In new construction homes, 25 percent of all materials used must be recyclable. Although the sills form a small proportion within the whole, as a contractor you don't want to get caught out by sills that still contain fiberglass. This is why we recommend the DTS Varipro sills. That way you avoid problems and on top of that it's also better for the environment."

Individuals will follow

According to Haneveld, the private market is not yet at this stage. "That is a matter of time and then consumers will also start asking for the most sustainable solutions for their homes. People want to preserve and insulate, and to do that they ultimately want to make responsible choices. We already offer those choices - so when private demand picks up, we will be ready."