FAQs Archive - DMX Membranes - Better Science. Better Product.

Q: HOW DOES DMX AG™ WORK?

DMX AG™ creates an air gap between wet soil and your basement wall, allowing the poured concrete walls to breathe. It also provides a clear negative side drainage path to disperse any ground moisture that might find its way behind the membrane. Wet soil never touches the wall next to your living space, thus reducing the chances of water infiltration into the basement. The DMX AG™ is made of HDPE which is an impermeable material to water. When installed according to our installation guide, it keeps water exterior to the foundation walls. This means dryer basements for the end user, and a wider choice of finishing materials for completing a basement area.

Q: WHY DOES DMX AG™ HAVE DIMPLES?

The dimples in DMX AG™ create a negative side air gap that eliminates the hydrostatic load (pressure) that can push water into the foundation, via cracks and capillaries as discussed earlier. Without the dimples in DMX AG™ the product would be in direct contact with the foundation exterior, minus a negative side clear drainage path that could potentially trap moisture against the wall should it get behind the membrane and force water intrusion into the basement. The key to DMX AG™’s success is the dimple design for the control of hydrostatic pressure and ground moisture control.

Q: DO I NEED SPECIAL FASTENERS TO INSTALL DMX AG™?

You will need DMX Washers™ for attaching the membrane to the foundation. Use the 1¼ inch concrete nails for poured concrete foundations and 1½ inch coated deck 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 basement below grade windows or along the top of the membrane on a slope. For further details, download our DMX AG™ installation manual.

Q: ON WHICH TYPES OF FOUNDATION CAN I USE DMX AG™

Every type you can think of – poured concrete, insulated concrete forms (ICF), and wood foundations.

Q: WE HAVE HEAVY CLAY SOIL. CAN WE USE DMX AG™?

Yes! We suggest installing an extra row of DMX Washers™ in the body of the DMX AG™ to help stand up to the vertical pressure heavy clay soil can exert on the membrane and the wall (see our installation manual for details).