Terrace and green roof insulation

For external applications, the foam is covered with a UV protective layer made of polyurea. It is important to know that the Polyurea protective coating is not recommended for long-term physical stress, that is, if you actively use the terrace, a different coating must be used. After insulating the balcony, you can concrete and cover the foam yourself. If you choose a simpler covering, you can cover it with stone or wooden paving slabs, a gravel bed, or even build a green roof (see below).

If you want to insulate due to waterlogging and thermal insulation is not an issue, the thickness of the balcony insulation can be a minimum layer of 3 cm. Although this thin layer still provides poor thermal insulation, it effectively protects your building against water. If thermal insulation is also a consideration, we naturally recommend a thicker layer. A 10 cm thick closed-cell foam insulation corresponds to 20 cm of traditional thermal insulation (cotton). 

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What is a green roof? What are the benefits?

Green roofs are becoming more and more popular, in addition to the load-bearing structure and the thermal insulation layer, the roof receives a special covering: earth and plants. Basically, it performs the same function as a traditional roof: it protects the building from weather conditions, precipitation and temperature changes. In addition to aesthetics, it also has functional benefits, such as the absorption of dust and dirt by plants and the circulation of water. The green roof is extremely effective in minimizing the runoff of rainwater and retaining heat on roof surfaces. The plants planted on the roof also contribute to its sound insulation.

Are all roofs suitable for this? Layers and design

In general, there are no contraindications to the exclusion of this solution for certain types of roofs, but it can be said that flat roofs are more often covered with plants. The height of the building does not significantly affect the feasibility of such a solution either. The green roof must be insulated and durable, as it is exposed to extreme weather conditions, special attention must be paid to thermal and moisture insulation. The layers of the green roof: vegetation, soil, filter and drainage layers, root protection, waterproofing, vapor barrier layer, slab.

Why SPF?

Green roof insulation should be light and fit the structure as well as possible. Since the spray foam is flexible, it easily fills even the smallest gaps. Polyurethane can be perfectly combined with different types of materials and is easy to use. When applying the spray foam, the surface of the roof must be dry. The insulation is cost-effective, quick to install, and long-lasting. Our moisture-retaining insulation on green roofs is at least 7 cm thick.