PVC seam plate

1. A siding system, comprising:

a plank of siding made from a first material;

a seam plate having a first layer and a second layer, the first layer having a front face and a back face and being made from the first material, the second layer having a front face connected to the back face of the first layer and being made of a second material, the front face of the of the first layer includes a plurality of elongate raised portions defining grooves therebetween and the back face of the first layer includes a plurality of elongate depressions directly opposite the elongate raised portions, the front face of the second layer includes a plurality of elongate raised portions configured to be received in the plurality of elongate depressions, and the plank includes a back face and plurality of elongate projections extending from the back face of the plank and being configured to be received in the grooves.

2. The system of claim 1 , wherein the second material has a greater modulus of elasticity than the first material.

3. The system of claim 1 , wherein the first material is a polymer material.

4. The system of claim 3 , wherein the polymer material is PVC.

5. The system of claim 3 , wherein the second material is a metal material.

6. The system of claim 5 , wherein the metal material is aluminum.

7. The system of claim 1 , wherein the first layer is connected to the second layer via an adhesive.

8. The system of claim 1 , wherein the first material is PVC and the second material is aluminum.

9. The system of claim 8 , wherein the first and second layers are connected via a two-part acrylic adhesive.

10. The system of claim 1 , wherein at least one elongate raised portion includes depressions at ends thereof that project backward so as to form raised columns that extend from the back face of the first layer at opposite sides of the second layer.

11. A siding assembly comprising:

a seam plate having a first layer and a second layer, the first layer having a front face and a back face and being made from a first material, the second layer having a front face connected to the back face of the first layer and being made of a second material;

a first plank of siding being made from the first material and having a front face and a back face, the back face of the first plank being connected to the front face of the first layer of the seam plate via an adhesive, a second plank connected to the front face of the seam plate via the adhesive, the second plank being made from the first material, and wherein the adhesive connecting the first and second planks and the seam plate is applied to the seam plate so as to include a plurality of vertical beads and one intersecting horizontal bead.

12. The assembly of claim 11 , wherein the first and second layers of the seam plate are connected via an adhesive which differs from the adhesive connecting the first and second planks to the seam plate.

13. The assembly of claim 11 , wherein the second material has a greater modulus of elasticity than the first material.

14. The assembly of claim 11 , wherein the first material is PVC and the second material is aluminum.

15. A siding assembly for application to an exterior of a building comprising:

a seam plate having a first layer made from a first material and a second layer made from a second material, the first layer having a first side and a second side opposite the first side, and the second layer having a first side connected to the second side of the first layer;

first and second planks of siding each having a first end connected to the first layer of the seam plate such that the first ends of the first and second planks abut to form a seam that extends along the seam plate and wherein the first and second planks are made from the first material and are connected to the first layer of the seam plate via an adhesive.

16. The seam plate of claim 15 , wherein the first material is PVC and the second material is aluminum.