XPS insulation: suitable for many applications

XPS insulation


XPS insulation has long been specified by architects looking for a robust product. And that’s hardly surprising, given the advantages it has to offer. XPS or extruded polystyrene insulation is, among other things, mould and moisture resistant, easy to install and 100% recyclable, and it provides exceptional compressive strength. In this article, we discuss the many applications of XPS insulation.

1.    Flat roofs

XPS is ideal for flat roof applications given the minimal moisture absorption. More specifically, our multifunctional XPS SL boards are perfectly suited for inverted roofs, which only require 300 kPa. If more compressive strength is required, you can opt for either XPS 500 or XPS 700.

2.    XPS insulation in foundations

XPS is frequently used in basements as well as foundation walls. In these environments, too, our XPS SL boards provide proven performance. The product’s closed cell structure prevents moisture-absorption, making it the perfect choice for installation below-ground, where it keeps out mould and retains its excellent lambda values year after year. To filter ground water and improve drainage, you can add a PROTECDRAIN FILTER on top of the waterproofing and the XPS insulation layer.

3.    Insulation for floors and car parks

Floors and car parks cannot do without moisture-resistant insulation either, but these environments require insulation boards that meet yet another important prerequisite. High compressive strength is key here. Depending on your needs, XPS 500 (max. 500 kPa) or XPS 700 (max. 700 kPa) offers sufficient load-bearing capacity. These products not only make for excellent thermal insulation; they are pressure-resistant and dimensionally stable, too. The insulation boards are often loose laid, because sufficient ballast would be added later on. You are guaranteed to get a perfect result using XPS, especially if you combine it with our ALSAN liquid parking solutions.

4.    In circular building projects

PIR remains widely used. It has improved thermal performance over XPS, but unfortunately it cannot be recycled. XPS represents a more-than-worthy alternative in this department. XPS insulation boards are not only produced using climate-friendly CO2 technology, they are also 100% recyclable – a perfect match for circular building projects which will continue to gain in popularity in the years to come. XPS insulation boards can be perfectly separated from the other layers (when a building shell gets disassembled) and are neatly processable for reuse.

Both new builds and renovation projects

XPS insulation can be utilised in many applications within a building envelope. The product is suitable for new build and refurbishment projects. XPS can be produced down to a minimum thickness of 20 millimetres. XPS MULTI20 has many applications, including cavity closers around windows and doors.

A board for every application

SOPREMA offers a wide range of XPS insulation boards, each with their own unique characteristics. To select the right product for your project, ask yourself the following questions:

  • Does your project need high compressive strength properties? If so, how much kPa should the material be able to withstand?
  • Which type of surface would work best for you? Do you prefer a smooth insulation board, or rather one with a rough surface that is ready to receive render finishes?
  • Will you opt for a board with a tongue-groove edge profile, a rebate edge or a square edge?

No matter your requirements, we have just the type of insulation board you need. Make sure to check the technical data sheets, though, which clearly list the properties of all our products, or to get in touch with our waterproofing and insulation experts. They are always happy to help answer any questions you may have.

Any questions about XPS insulation?

Do you have any questions about the different XPS insulation applications, or are you still looking for the perfect insulation material for your construction project? Please don’t hesitate to get in touch with our experts.