EXTERNALL WALL KINGSPAN PHENOLIC BOARD

Kingspan Kooltherm K5 is the most effective and only type of phenolic core external insulation board currently available that is suitable for use behind traditional and lightweight polymer modified renders. This high quality board is made of rigid resole foam covered on both sides with white, glass tissue bonded to the core. In fact, apart from EPS and Rockwool mineral wool DD, it is one of the three most commonly used insulation materials used in EWI systems. It is unaffected by air infiltration and resistant to the passage of water vapour. Under Building Regulations, the thermal performance of the exterior insulated wall must have a U-value of no more than 0.30W/m²K. Kingspan K5 brakes this magic point offering 0.28W/m²K with just 70mm board thickness. For this reason it is ideal for applications where space is at a premium. Depending on the insulation thickness, Kingspan Kooltherm K5 provides a thermal conductivity between 0.020 W/mK and 0.023 W/mK. Moreover, premium performance rigid thermoset phenolic insulation is manufactured with a blowing agent that has zero Ozone Depletion Potential (ODP) and low Global Warming Potential (GWP). Cutting should be carried out either by using a fine toothed saw or by scoring with a sharp knife, snapping the board over a straight edge and then cutting the facing on the other side. Boards should be stored inside a building. In terms of reaction to fire and in accordance with the Euroclass system, Kingspan Kooltherm K5 insulation products can achieve as good as B,s2 or d0 class.

KINGSPAN K5 PHENOLIC BOARD INSTALLATION

The main difference is that when you are sticking the boards to the wall whereas on the EPS where you have a little of a kind of uneven wall for example, and you use adhesive and stuck the boards onto the wall, and you have a bit of an overlap and not flush to each other, you could just rasp down those boards, get a nice even surface after installing them and then have a nice level basecoat. With the Kingspan K5 it is slightly different. The build-up of these boards is you have a glass paper outer layer with some rigid foam insulation in the middle. Because of that, it is important that you never rasp these boards! And because you can’t rasp them, it is important to get them really dead flat and level with each other. What you need to do is to be really careful of how you are putting the adhesive on the back of the boards. The best thing to do is to make sure you always have a very long spirit level, just to make sure that every time you are putting a board on to the wall, you should notch trowel the whole of the back of the board to get nice even coverage, and then when you are applying it onto the wall you just get that spirit level and make sure that all of them are very level and that there is no discrepancy between the boards. A lot of installers, if they do have bits and pieces that are sticking out, tend to use a bit more basecoat just to level it all off. But that in fact does weaken the system, so again it is imperative to try and keep that base coat to a kind of 5-6mm maximum thickness there. And by doing so, you have to make sure that the adhesive behind the boards gives you a nice flat surface.

KINGSPAN KOOLTHERM K5 SPECIFICATION

Kooltherm range boards come in 1200x600mm size. They are available in thicknesses: 20mm, 50mm, 60mm and 70mm. The K5 phenolic board in 70mm is the common thickness insulator used in external wall insulation systems. The cost (prices) of manufacturing Kingspan is considered linearly proportional to its thickness. Kingspan 20mm is the lowest price board compared to the thicker 70mm version.

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Video credit:https://www.youtube.com/watch?v=BITJLBmpzXU