Wall Panel Installation

Wall Panel Installation

Tools and supplies needed:

  • Protective eye wear or safety goggles
  • Heavy cloth or leather gloves
  • Measuring tape
  • Package of DumaWall panels
  • Hand saw/circular saw
  • 1-inch wood screws
  • Adhesive – Loctite Power Grab Ultimate. In Canada: Lepage No More Nails Wet Instant Grab, finish nails or staples.
  • Sealant for wet environments-DAP Kwik Seal Ultra. In Canada: Kwick Seal Plus
  • Utility knife
  • Optional: 5/16-inch aluminum trims for vertical termination points

READ this entire installation guide before beginning your installation. ACP is not responsible and will not be held liable for project failures if installation guidelines are not followed. ACP recommends that you install these tiles over an existing substrate to ensure proper structural integrity.

DumaWall panels are not intended to be attached to raw concrete, poured concrete walls or concrete block basement walls. Appropriate substrates in a dry environment would include framed walls with existing tile, drywall, cement board, OSB, or plywood. DumaWall panels must be attached to structures that comply with your local building codes and have incorporated appropriate moisture abatement measures.

FOR SHOWER, TUB OR DIRECT WATER ENVIRONMENTS. Although DumaWall tiles are 100% waterproof when used with DAP Kwik Seal Ultra in the seams, we recommend you follow your local building codes for wet environments like shower and tub enclosures. We recommend a 100% waterproof substrate that will prevent water from getting behind potentially unsealed areas that would cause mold or other damage.

Acceptable waterproof substrates are:

  • Existing ceramic tile walls. No additional preparation required.
  • Installation over waterproof substrates, such as Cement Board®, Schluter Kerdi Board®, GP Densheild®, Johns Manville GoBoard®, Hardiebacker®, Fiberock® and equivalent products. Always follow manufacturer’s installation instructions to create a waterproof enclosure.

FOR BACKSPLASH, LAUNDRY OR OTHER DAMP ENVIRONMENTS. Although DumaWall tiles are 100% waterproof when used with DAP Kwik Seal Ultra in the seams, we recommend a moisture-resistant substrate for damp environments like kitchen backsplash, bathrooms or laundry areas. Use a moisture-resistant drywall such as Greenboard® or Purpleboard®. Follow manufacturer’s directions and your local building codes.

ACP, LLC is not responsible or liable for any labor costs or damaged product incurred as a result of improper installation. All product defects are covered under our 5-year limited warranty.

Due to manufacturing variations, we cannot guarantee an exact color match from lot to lot. Prior to installing DumaWall panels and trims on your walls, please unpackage & lay out all purchased product to ensure color consistency. If you encounter unreasonable color variation, please give us a call at 1-800-434-3750 (7am-4:30pm CST, M-F) so that we may assist you with your project.

Before you begin installation

1) Clean surfaces. Before starting, make sure all surfaces are clean, dry, smooth, and free from dust, grease, wax, etc. Clean the back surface of the panels by wiping with a clean cloth.

2) Dry layout. It is recommended that you perform a “dry layout” prior to applying any adhesive. Measure walls, check for level and square. Depending on dimensions and room construction, you may need to trim some panels accordingly. Depending on your project, when fitting for dry layout, panels can be centered at a focal point, such as behind a sink or the center of a room. For the purpose of the layout only, build out from both sides of the focal point, to ensure how the tiles fit into the space.

3) Skip this step unless you are installing panels in a shower or other water-direct environment. Installation in environments exposed to a direct flow of water (shower, mud room or garage) require a 1/8-inch bead of DAP Kwik Seal Ultra (sealant) to be used in all tongue and groove connections (image A). Add a bead of the sealant along recently cut edges (see instructions below) to be placed into the corner.

image A

Repeat this process on perpendicular tile also facing corner (image B). The recommended sealer is: DAP Kwik Seal Ultra.

image B

4) Cut DumaWall Tiles using standard wood working tools like a table saw or circular saw with a fine-tooth blade to provide a clean, smooth cut (image C). Use a 60-tooth blade or higher. To ensure the base of the saw does not scratch the surface of the panel, we recommend protecting the surface with blue painter’s tape.

image C

Alternatively, you can score one side a few times with a utility knife and snap the tile at the line (image D, E). This method may require sanding the snapped edges.

image D

image E

5) Cut panels for outlets and light switches. Measure and mark the borders where the opening will be with a marker. Drill a 1/2″ hole using a drill in a corner of the cut-out section (image F). Use a jigsaw to cut the remaining opening, following your tracing (image G).

image F

image G

6) If installing into a corner, the vertical flange must be cut off to allow for a plumb edge against the substrate (image H). The bottom flange should also be cut off of tiles when placing them on the ground. This will allow for a level edge on bottom (image I).

image H

image I

7) Do not attach accessories like coat hooks, light fittings, mirrors, etc. directly to the tiles. Drill holes through the tiles and use suitable anchors to attach the accessories securely into the framing behind. Seal per instructions using DAP Kwik Seal Ultra.

Installation onto drywall, OSB, plywood or existing tile substrates

1) If you choose to finish the edges, we recommend our trim for both end pieces and inside corners. We recommend using baseboard or cove molding to finish the bottom row, regardless of flooring material. For both end trim pieces and corner trims, install trim in appropriate location prior to setting tile into trim (image J).

image J

If your project calls for DumaWall panels starting at a floor, be sure the first row is straight and level. If you plan to use baseboard or cove molding at the floor/wall corner, snap (or draw) a level line at 12 inches from the floor. Align the tops of each panel in the first row to the snapped line (image K). It is imperative that this starting row be level and straight. If you do not intend to use baseboard or cove molding, snap or draw a level line at 10 inches from the floor and cut the bottom of each panel as necessary to align at the top with your level line, and to the floor.

image K

2) To install your first panel, begin with bottom row and work from right to left due to the profile of interlocking tongue and grooves. Make sure the first panel you intend to install fits properly and is level. You may need to place a temporary shim under each bottom tile or use painter’s tape to hold each tile in place while the adhesive sets (image L).

image L

3) Apply adhesive to the back of the panel. The recommended adhesive is Loctite Power Grab Ultimate. Carefully read and follow adhesive manufacturer’s directions. Apply a 1/4″ bead in a typical “M” or “W” pattern, and a bead around the tile perimeter about 1-inch in (image M). The 10 oz. adhesive tube covers approximately 5 wall panels.

image M

4) Apply the panel to the substrate by pressing it into place. Apply even pressure with your hands across the entire panel. If necessary use painter’s tape, shims or pins to hold panels in place until the adhesive sets.

5) Wipe off excess adhesive. Use water and a cloth. Clean off any adhesive residue that is visible while it is still wet. Do not allow this residue to dry as it will be difficult to clean up when dry and could damage the finish.

6) Connect the next tile by fully inserting the tongue into the groove (image N).

image N

7) Repeat until bottom row is complete. If installing in a corner, cut off the flange facing the corner to allow a plumb surface against the substrate. Repeat this process on tile that abuts the previous one also facing the corner.

8) Allow the adhesive on the bottom row to set up. See adhesive manufacturer’s directions. The time necessary can vary from 20 minutes to several hours.

Determine what tile pattern you want to use before starting the second row (image 0, P). Commonly-used options are running bond (vertical joints are staggered) and stack bond (vertical joints line up).

10) After the first row has set up, apply the remaining tiles according to the pattern or layout you desire. Use adhesive and methods described above for remaining rows.

11) When installing the top row, install as you have been until you get to the last tile in the corner. If tiles butt against your ceiling, when installing the last tile, remove flanges from the bottom and side (image Q). Lay tile into place. Apply pressure to ensure tile is flush with others. Use a recommended silicone sealer-as previously described-in joints to ensure a water-tight installation, if applicable.

image Q

DumaWall Edge and Corner Trims

Inside Corner Trim

Inside corner trims should be attached with adhesive to the substrate. Dispense a small bead of adhesive directly to the substrate corner or on the trim itself. Also dispense a bead of sealant into each of the trim’s channels to prevent water from reaching the substrate.


Typical Application

Universal J-Trim

Universal J-Trims are used to finish the terminal end of tiles when not adjoined to anything. To install, don’t dispense adhesive a few inches from the tile’s edge where you intend to use the Universal J-Trim. This will allow the trim to slide in-place. Dispense a bead of sealant into the receiving channel of the trim and then press the trim into place.


Typical Application


L-Trims are used to cover existing exposed tiles to provide a finished look (see drawing below). Install by dispensing a thin bead of sealant on the DumaWall side and a thin bead of adhesive on the substrate side. Press trim into place. If trim will not stay in-place, use some masking or painter’s tape to hold until adhesive sets.


Typical Applications