Insulate Inside Kitchen Cabinets. Insulation decreases the amount of heat entering from outside when its hot and traps warmth inside when its cold. Attenuate frequencies inside the box.
In our house this has the benefit of insulating part of the external wall and also adding a second layer of insulation to the floor between the kitchen and the unheated basement see my post about the basement ceiling for more detail on the primary layer of insulation. But fiberglass or mineral wool may be a better option in wet windy areas. Shake a can of expanding foam insulation according to the directions on the can.
The difference is simple as the name suggests the first one is hollow inside thus being lightweight and economic.
In any event up to 60 of the cost will be labour. The labour cost will remain largely the same whatever thickness of insulation is installed. Cut to fit and install with hot Glue. Hence both PVC boards are used for kitchen cabinets.
