Installation Guide

INSTALLATION GUIDELINES

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perimeter that will be trimmed off once the panel is installed and it will also indicate where a butt

seam will be located if multiple panels are required.

• To determine length requirements for each panel, allow for a 1” of overhang over any perimeter

edge and mark the material so that it can be cut flush against any wall or vertical obstacle.

• Cut the panel to the desired size using a straight edge and sharp utility knife and dry-fit it into

place. Make sure the utility knife blade is sharp and is in an upright position for a clean 90 degree

cut. Cut the material with the bottom side up. Do not remove the release liner film from the back

of the panel at this time.

MULTI-PIECE REQUIREMENTS (if applicable)

• Some projects may require more than one panel of membrane to be installed. It is important to

understand how to properly install multiple panels that run in parallel to each other. With the

initial panel of membrane dry-fit in place, layout and dry-fit the adjoining panel as follows.

• Align the edge of next panel parallel to the one in place so that it snugs up flush to it creating a

butt seam. Butt seams should be tight with no gaps.

• IMPORTANT: Material should be installed so that all butt seams are factory edges to factory

edges. Any cut edges should only be located along outside perimeters, along walls or along other

obstacles.

• Determine the length requirements for the multi-piece panel by allowing for 1” of overhang over

any perimeter edge and mark the material so that it can be cut flush against any wall or vertical

obstacle.

• Cut the multi-piece panel as desired using a straight edge and sharp utility knife and dry-fit it into

place. Make sure the utility knife blade is sharp and in an upright position for a clean 90 degree

cut. Cut the material with the bottom side up. Do not remove the release liner film from the back

of the panel at this time.

• Repeat above steps if installing multiple panels.

FITTING / CUTTING ALONG WALLS

• Using a sharp utility knife for all cuts, use a suitable straight edge to mark and cut the panel to the

desired size.

• Ensure the knife blade is sharp and in an upright position for a clean 90 degree cut.

• Tip: Cut the material with the bottom side up as much as possible and or hold the blade below

and cut up through from the bottom of the Dec-Tec DIY.

• Concept is a lot like cutting in carpet.

FITTING / CUTTING AROUND OBSTACLES (if applicable)

• To dry-fit the membrane around a fixed post or other obstacle that cannot be removed or

detached you will need to provide a relief cut on the panel from an edge inward to the obstacle.

This cut is required to allow the membrane to wrap around the obstacle and lay flat.

• Determine the best location for the relief cut and use a straight edge to mark and cut the field

panel creating a clean, straight cut edge as close to the base of the obstacle as possible.

• Tip: To obtain a tight fit around irregular objects, create a template out of heavy paper to fit

around posts, pipes, or other irregularities. Use the template to trace an outline on the panel and