Laminated plate-shaped roof flashing material
A pliable, ductile plate-shaped roof flashing is disclosed. The roof flashing has a laminate structure comprising a composite layer and a foil sheeting on one or both sides of the composite layer. The composite layer comprises a carrier material and one or more non-structural constituents. At least one of the non-structural constituents comprises a heavy metal compound having a density higher that 3.5 g/ml.
1. A pliable, ductile plate-shaped roof flashing having a laminate structure, the laminate comprising a composite layer and a foil sheeting on one or both sides of the composite layer, characterized in that the composite layer comprises a carrier material and one or more non-structural constituents, at least one of said non-structural constituents comprising a heavy metal compound having a density higher than 3.5 g/ml.
2. The roof flashing according to claim 1 , wherein the density of the heavy metal compound is 4.5 g/ml or higher.
3. The roof flashing according to claim 1 , wherein the non-structural constituent comprises the heavy metal compound as metal particles.
4. The roof flashing according to claim 1 , wherein the non-structural constituent comprises the heavy metal compound as metal bound in a chemical compound.
5. The roof flashing according to claim 1 , wherein the heavy metal of the compound is selected among barium, iron, silver and copper.
6. The roof flashing as defined in claim 4 , wherein the non-structural constituent is barium sulphate.
7. The roof flashing according to claim 1 , wherein the composite layer material as further non-structural constituent comprises a filamentous material.
8. The roof flashing according to claim 7 , wherein the filaments of the non-structural material have a length, which is less than 10 cm, preferably less than 5 cm and more preferably less than 1 cm.
9. The roof flashing according to claim 7 , wherein the filaments are arranged with a predominant orientation.
10. The roof flashing according to claim 1 , wherein the non-structural material constitutes up to 95% by weight of the composite layer material.
11. The roof flashing according to claim 1 , wherein the non-structural material constitutes more than 50% by weight of the composite layer material.
12. The roof flashing according to claim 1 , wherein the non-structural material constitutes more than 75% by weight of the composite layer material.
13. The roof flashing according to claim 1 , wherein the foil sheeting is a thin metal foil having a thickness of a magnitude from 0.1 to 0.5 mm.
14. The roof flashing according to claim 13 , wherein the metal foil is constituted by aluminium.
15. The roof flashing according to claim 1 , wherein the density of the composite layer material is 2.5 g/ml or higher.
16. The roof flashing according to claim 1 , wherein a rail is attached along a side of the plate-shaped roof flashing, the rail being adapted for connecting to a building element.
17. The roof flashing as defined in claim 1 , wherein the plate-shaped roof flashing is corrugated.
18. The roof flashing according to claim 1 , wherein the foil sheeting comprises a pleating.