Areas where Bulletin Board is to be installed should be clean, fully enclosed, and weather tight with the permanent HVAC in operation. A minimum temperature 68º F (20º C) should be established at least seven days prior to beginning the installation, maintained during the installation, and for at least seven days following the installation. The installation should not begin until the work of all other trades has been completed, especially overhead trades. Any areas to receive material should be adequately lighted to allow for proper inspection of the substrate, installation, seaming and for final inspection.
The installation of Bulletin Board starts with the substrate. Bulletin Board can be successfully installed over a variety of substrates provided the surface is sound, smooth, flat, clean, and permanently dry. Drywall and wood panels are the most common substrates. Always conduct adhesive mat bond tests before beginning installation. Bond testing will aid in identifying both the working characteristics of the adhesive (open time and working time) for the site conditions, and also any potential bonding problems.
Material Storage and Handling
Areas where materials are to be stored should be a stable, conditioned environment as described under the Jobsite Conditions section. All materials and adhesives should be acclimated to these conditions for at least 48 hours prior to the installation. Material should be delivered to the job site in original, unopened packaging, with all labels intact. All rolls should be stored standing upright, labels up, to ensure that the color, roll and batch numbers can be easily read.
Cutting and Seaming
For each wall, cut pieces of Bulletin Board to the required length and width, adding 2” - 3” in each direction to allow for final trimming. It is preferred that the material is cut 24 hours prior to installation and the sheets be laid out flat. Plan the layout to allow for approximately 1/2” - 3/4” of the factory edge to be trimmed from each side of the material for seaming. The seams should fall a minimum of 6” away from joints in the substrate. Allowing for trimming, draw a plumb line on the wall where the seam for the first piece will fall. Using a Forbo Seam and Strip Cutter or a straight edge and knife, trim 1/2” - 3/4” from the seam edge of the first piece. Angle the knife slightly to create an undercut. Trim the sheet and “dry” fit it to the wall section, making sure that the seam edge will align with the plumb line on the wall. Traditional scribing methods generally produce the best results. Establish “set marks” on both the material and the wall to aid in positioning the sheet during installation.
A perfectly installed Bulletin Board requires perfect adhesion. The recommended adhesive to be used with Bulletin Board is L 910W. Starting from the corner, spread adhesive in the area where the first piece will be installed. The plumb line is the boundary for the side opposite the corner. Depending on conditions, it may not be possible to spread adhesive in the entire area without the adhesive becoming too dry before the material is placed. If necessary, only spread adhesive a short distance from the starting point and stop the adhesive spread along a straight vertical line. Do not spread more adhesive than can be covered while the adhesive is still sufficiently wet to achieve a 90% - 100% wet transfer to the material backing. Using the set marks and plumb line established during fitting, position the material on the wall, starting at the corner. Roll immediately with a three-section wall roller. Roll thoroughly in both directions, first across the width and then along the length, so that the material backing is firmly pressed into the wet adhesive and any trapped air bubbles are released. Repeat this process for each piece along the wall, completing the installation of each piece as you go.