Coated membrane composite

1. A roofing membrane composite comprising:

(i) an olefinic membrane core having first and second planar surfaces;

(ii) a first silicone coating layer disposed on said first planar surface; and

(iii) a second silicone coating layer disposed on said second planar surface, where the roofing membrane is adapted for installation on a roof surface as the roof covering;

(iv) a silicone adhesive disposed on said first or second silicone coating layer.

2. The roofing membrane composite of claim 1 , wherein the first or second silicone coating layer is crosslinked.

3. The roofing membrane composite of claim 1 , where the olefinic membrane is an EPDM membrane.

4. The roofing membrane composite of claim 3 , where the thickness of the EPDM membrane is from about 500 μm to about 3 mm, and where width of the EPDM membrane is from about 1 to about 20 m.

5. The roofing membrane composite of claim 4 , where the first and second silicone coating layers have a thickness of from about 5 to about 500 μm, and where width of the EPDM membrane is from about 3 to about 18 m.

6. The roofing membrane composite of claim 1 , where said first and second silicone coating layers mate at least one lateral edge of said membrane.

7. The roofing membrane composite of claim 1 , where said silicone coating layer is a dried or cured layer of a silicon polymer.

8. The roofing membrane composite of claim 7 , where said silicone polymer is a polysiloxane.

9. The roofing membrane composite of claim 8 , where said polysiloxane is a diorganopolysiloxane or a dihydrocarbylpolysiloxane.

10. The roofing membrane composite of claim 1 , where a primer layer is disposed between said membrane and said silicone coating layer.

11. A roofing system comprising:

(i) a first membrane composite including an olefinic membrane core having first and second planar surfaces; a first silicone coating layer disposed on said first planar surface; and a second silicone coating layer disposed on said second planar surface;

(ii) a second membrane composite including an olefinic membrane core having first and second planar surfaces; a first silicone coating layer disposed on said first planar surface; and a second silicone coating layer disposed on said second planar surface; and

(iii) a silicone adhesive adhering said first membrane composite to said second membrane composite.

12. The roof system of claim 11 , the roof system including a substrate to which said first and second membrane composites are affixed.

13. The roof system of claim 12 , where said membrane composites are affixed to said substrate through silicone adhesive.

14. The roof system of claim 11 , where said substrate includes at least one of a roof deck, an insulation board, a coverboard, or an existing membrane.

15. The roof system of claim 11 , where said olefinic membrane of said first composite and said olefinic membrane of said second composite are EPDM membranes.

16. A roofing system comprising:

(i) a roof deck;

(ii) a first and second membrane composite disposed above the roof deck and secured thereto, where each membrane composite includes an olefinic membrane core having first and second planar surfaces, a first silicone coating layer disposed on said first planar surface, and a second silicone coating layer disposed on said second planar surface, where the a first and second membrane composite are attached by a silicone adhesive to each other to thereby form a seam.

17. The roofing system of claim 16 , where an insulation board is disposed between said roof deck and said at least two membrane composites.

18. The roofing system of claim 16 , where the olefinic membrane core of said first and second membrane is an EPDM membrane, having a thickness from about 500 μm to about 3 mm, and where the first and second silicone coating layers of said first and second membrane have a thickness of from about 5 to about 500 μm.