Wall panel system with insert

1. A wall panel system comprising:

(a) a mounting bracket secured to a wall surface;

(b) a wall panel having a return flange;

(c) a clip attached to said return flange, said clip having an engaging element that secures said clip to said mounting bracket,

(d) a slot in said clip facing outwardly from said wall panel;

(e) a spline slidably positioned in said slot of said clip; and

(f) a sealing insert with two perpendicular and intersecting elements positioned between said mounting bracket and said spline, said sealing insert having a foam body and a gasket interposed between said spline and said foam body.

2. The wall panel system of claim 1 , where said foam body is made of polypropylene foam.

3. The wall panel system of claim 1 , where said gasket is a gasket tape made of PVC.

4. A wall panel system comprising:

(a) a mounting bracket having a longitudinally extending first channel and a longitudinally extending second channel;

(b) at least two wall panels positioned adjacent to one another, each having a perpendicular flange extending from two opposing edges thereof;

(c) a clip attached to each said wall panel adjacent each said flange, said clips having a slot facing outwardly from said wall panel flange and said clips having an engagement element with a first portion and a second portion;

(d) a spline slidably positioned in said slots of two adjacent clips; and

(e) a sealing insert having two perpendicular and intersecting elements, said sealing insert having a foam body positioned between said mounting bracket and said spline;

wherein said clips are attached to said wall panels on a top edge and a bottom edge, with said first portion mating with said second channel of said mounting bracket along said top edge and said second portion mating with said first channel along said bottom edge.

5. The wall panel system of claim 4 , said sealing insert having a gasket interposed between said spline and said foam body.

6. The wall panel system of claim 5 , where said foam body is made of polypropylene foam.

7. The wall panel system of claim 5 , where said gasket is a gasket tape made of PVC.

8. A wall panel system for attachment to a building surface, the system comprising:

(a) a plurality of mounting brackets attached to a surface;

(b) a plurality of wall panels having at least two return flanges, the wall panels positioned adjacent to one another and separated by gaps, said gaps positioned over said mounting brackets;

(c) a plurality of clips attached to said return flanges of said wall panels, said clips having a slot facing outwardly toward said gaps;

(d) a plurality of splines slidably positioned within and between two adjacent and opposing slots of adjacent clips and in said gaps; and

(e) a sealing insert having a foam body with two intersecting elements oriented generally perpendicular to one another, the sealing insert positioned between said spline and said mounting bracket at the intersection of two perpendicular gaps.

9. The wall panel system of claim 8 , wherein said clips are secured to said mounting brackets, and said mounting brackets are secured to the building surface by mechanical fasteners.

10. The wall panel system of claim 8 , wherein said sealing insert is positioned at the intersection of four wall panels.

11. The wall panel system of claim 8 , wherein said sealing insert further includes a gasket interposed between said spline and said foam body.

12. The wall panel system of claim 8 , wherein said foam body is made of polypropylene foam.

13. The wall panel system of claim 11 , wherein said gasket is a gasket tape made of PVC.

14. The wall panel system of claim 8 , wherein said mounting brackets have a longitudinally extending first channel and a longitudinally extending second channel.

15. The wall panel system of claim 14 , wherein said clips include an engagement element having a first portion and a second portion.

16. The wall panel system of claim 15 , wherein said clips are attached to said return flanges of said wall panels on a top edge and a bottom edge of said wall panel, with said first portion of said engaging element mating with said second channel of said mounting bracket along said top edge and said second portion of said engaging element mating with said first channel along said bottom edge.

17. The wall panel system of claim 8 , wherein each of said clips include an engaging element carried by a projection, and wherein each of said clips include a receiver defined by said engaging element, said projection, and a wall of said slot, said receiver adapted to receive a portion of said sealing insert.