Claridge also makes a Chalkboard/Whiteboard adhesive No.16A at $22 per gallon.  One gallon cover approx 80 ft sq  see at www.ahutton.com/clar-pg30.pdf

also see Claridge Skin installation here

Architectural Panels INSTALLATION INSTRUCTIONS 
Click here for install figures

IMPORTANT: Read instructions completely before starting installation. To insure permanent adhesion, the panel should be at room temperature four hours prior to actual installation.    

Due to the flexibility of the panel, it is recommended that two people do installations up to 4’ x 4’ panels and three people for panels 4’ x 5’ and larger.    

Installing on a wall or other flat surface.  Clean surface of the wall using a detergent and water to remove all dust, oil or other foreign matter and let dry. Mark wall to indicate vertical and horizontal edge positions that the architectural panel will take, see fig. 1A. Then apply a non-water based contact adhesive to the panel and the surface to which it is being applied. Let dry about 5 minutes. Continue with ‘For All Installations” below,

Installing over Existing Chalkboards. - Clean surface of chalkboard using a detergent and water to remove all dust, oil or other foreign mailer and let dry. Use inside edges of chalkboard molding for horizontal and vertical positions, see fig. 2A. Then apply a non-water based contact adhesive to the panel and the chalkboard. Let dry about 5 minutes. Continue with “For All Installations” below,

For All Installations 
1. Position panel so that the bottom edge is horizontal with the bottom edge of the molding. See figs. 1 A & 2B. BE SURE TOP PORTION OF PANEL DOES NOT COME IN CONTACT WITH WALL SURFACE.

2. Apply initial pressure to the bottom center of the panel. Using a clean, dry cloth, work out to side edges. Be sure all air pockets are worked out. See figs. 1C & 2C.

3.  Repeat pressing procedure while progressing upward on panel, pressing approximately 8” at a time. See figs. 10 & 20.

4.  Using a linoleum roller and plenty of elbow grease, apply pressure over entire surface of panel, working from center out toward edges until complete contact is made between back of panel and wall surface.

5.  Remove protective covering - clean surface with liquid detergent or Formula 409. Rinse thoroughly with water. Follow Care & Maintenance instructions.