30 mm Retricel PIR floor insulation board is not d...

30 mm Retricel PIR floor insulation board is not dimensionally stable.
In a transport we received plates of 60 cm, 59.2, 59.5 wide as well. Officially, of course, they had to be 60 cm wide. This way you cannot of course insulate, the plates will not connect. So we had to measure them all, select them, so it took a lot of extra time. Next time we will order from another manufacturer, where they will be cut to size.
Sides are also not neatly cut. Surplus Cachering often hangs on the side.
Plus point with Retricel PIR 30mm, coating is strong.

Retricel PIR 20mm floor insulation boards were dimensionally stable, but caching / PIR is weak, you get holes continuously, PIR sinks much deeper than PIR 30.