Frequently Asked Questions about DMX FlexSheet™

How does water get into my basement?
Most basements have cracks of some kind that occur during the curing process. This is very common at window openings, beam pockets, and sometimes at corners or elevation changes.

When the soil around the foundation gets wet, it creates a constant hydrostatic pressure against the wall that will push water into the basement, even through the tiniest crack. DMX FlexSheet™ isolates these cracks from the surrounding wet soil, to prevent this from happening.

How does DMX FlexSheet™ work?
DMX FlexSheet™ creates an air gap between wet soil and your basement wall, allowing the concrete to breathe and disperse moisture. Wet soil never touches the wall next to your living space.

Why does DMX FlexSheet™ have dimples?
The dimples in DMX FlexSheet™ create an air gap that eliminates the hydrostatic load (pressure) that forces water into the foundation.

Can water get behind DMX FlexSheet™?
In most cases - NO. However, even if the sheet was damaged and water got behind it, the air gap would prevent water from getting into the home. Because there is no direct soil pressure on the wall, water just drips down to the footing and away through the drainage system.

Do I need special fasteners to install DMX FlexSheet™?
You will need DMX FlexPlugs and plastic washers for attaching the membrane to the foundation. Use with 1 ¼ inch concrete nails for poured or concrete block foundations, and 1 ½ inch deck or drywall screws for ICF foundations.

DMX FlexTrim is available for sealing cut edges in the membrane where the flat panel has had to be trimmed off, such as around windows or on a slope.

For full details, download our DMX FlexSheet Installation Manual.

What types of foundation can I use DMX FlexSheet™ on?
Every type you can think of—poured concrete, Insulated Concrete Forms (ICF), block wall, and wood.

Can I use DMX FlexSheet™ for repairs and renovations?
Absolutely! DMX FlexSheet™ will protect everything from a modest crack in a residential foundation, to the stone foundations of century-old churches and homes.

We have heavy clay soil. Can we use DMX FlexSheet™?
Yes! We suggest installing an extra row of DMX FlexPlugs to help stand up to the pressure heavy clay can exert on the wall.

Is DMX FlexSheet™ just for walls?
Not at all! You can use DMX FlexSheet™ for subfloors, exterior wall protection, interior wall repairs, built-up flower beds, retaining wall protection, around culverts, and many other commercial or industrial applications. Keep watching as we come up with even more!