The group of wedge products is a novelty in our offer. The petraroof-fill rock blocks are designed to fill trapezoidal sheets The shape and size of the blocks is adjusted to every type of sheet

Ensuring:
improved accoustic insulation
Improved thermal insulation
Levelling of the roof surface under the first layer of insulation

For more details, please visit:
https://www.Petralana.eu/en/products