Step 2: NOW CHOOSE YOUR INSULATION
Our deluxe hot tub covers are made using rigid, polystyrene, heavy-density, EPS100 (20 kg/m3), foam in-fill board.
It is the density of the foam that provides the insulation. This is far more important that the thickness of the foam.
Hot tub covers must be tapered away from the hinge to allow rain, water and consensation to run off.
Flat covers cause water to pool on the surface which will eventually make the cover sag in the middle and break.