Dimpleboard DMX - Roll

DMX AG Dimpleboard Air Gap Membrane



BuildBlock recommends combining methods of water proofing for best results. Either combine a water-based primer and a peel and stick membrane or the peel and stick membrane with the DMX AG (Air Gap) membrane.

DMX FlexSheet™ Damp-proofing Membrane

DMX Products Available through BuildBlock





6’6″ x 65’6″ DMX Single Tab FlexSheet / 2.00x20m

Roll of 430.4 sq.ft.


8′ x 65’6″ DMX Simple Tab FlexSheet / 2.44x20m

Roll of 525.09 sq.ft.


DMX FlexTrim (Bundle of 10)

Bundle of 10


DMX Washers (Pkg. of 500)

Pkg. of 500

DMX_AG_Logo-mdDMX AG™ is the leader in Foundation Wraps. It is the air-gap membrane that exceeds today’s most demanding building codes.  It has received a positive CCMC Evaluation as a stand alone Dampproofing and Drainage Layer and is presently being reviewed by the ICC-ES in the USA.

DMX AG™’s air-gap membrane technology keeps basements dry, no matter what the weather or soil conditions. Unlike traditional foundation coatings, DMX AG™ bridges cracks and drains away moisture to the FlexTube™ footing drains. By controlling both interior and exterior moisture, DMX products virtually eliminate foundation leaks and expensive callbacks.

What’s more, DMX AG™ is tough, Earth Friendly, and easy to use. Because it retains its flexibility over a wide range of temperatures, installation is fast and easy, even in cold fall and spring weather. No special breathing or skin protection needed. And thanks to its high tensile and compression strength, it won’t tear during installation or back filling.

Did you know that the average 6’ roll of DMX AG™ contains 300 recycled detergent bottles!!  DMX AG™ can add significantly to your LEED certified project through it’s recycled content and additive package that enhances the products sustainability.

DMX AG Installation Manual





Here are some of the more significant benefits and advantages you will get when you use DMX AG™ on your project.

DMX AG™ resists potential damage during backfill.  Made from High Density Polyethylene (HDPE), a tough durable material, DMX AG™ does not require the special protection boards many other products do to survive construction.

  • Highest compressive strength in the industry.
  • Highest tensile strength in the industry.
  • Heaviest Sheet (g/m²) for strength and durability in the industry.
  • Install and backfill faster than with traditional spray applied products. You can install DMX AG™ soon after the forms are removed. No waiting for foundation walls to fully cure or dry before installation.
  • As the name implies, DMX AG™ stays flexible and easy-to-use in any climate, it is not weather dependent. DMX AG™ bridges even large foundation wall cracks that cause water infiltration and damage, callbacks and unhappy homeowners. Our dimpled sheet provides a protective air gap that keeps water out of the cracks by providing a negative side drainage channel, unlike tar-based products.
  • New walls are full of moisture. DMX AG™’s air gap technology allows moisture to exit the wall and work its way to the footing drain. Wet soil never touches the foundation. Walls dry properly so they are not damaged by freeze-thaw cycles.
  • HDPE is safe and environmentally friendly. It won’t leach harmful chemicals into the soil around the home, as tar-based products may do.
  • Because there are no harmful chemicals involved, you do not need special breathing and skin protection during installation. Just your usual: safety shoes, glasses and a hard hat. You get support from a company you can trust.  Our goal is to make sure you never have a second thought about choosing DMX AG™.
  • DMX AG™ can be made fire retardant for tunnel and confined space use as a panning liner to control aquifer water during concrete installation (Contact DMX Plastics Limited for more detailed information and use)
  • DMX AG™can be specially modified to suit special needs on a special order basis, which is one of our hallmarks of customer service.

Learn more about installing DMX AG™ on our Frequently Asked Questions page. Or download a completeInstallation Manual.


DMX Plastics Limited make a full line of accessory products to aid in the installation of the DMX AG™ Dampproofing/Waterproofing and Drainage Layer sheet systems.  These accessories are made with feed stocks (resin) that is engineered to take the rigors of attaching the membrane to concrete, concrete block, ICF, and PWF foundations and firmly holding the membrane in place during the backfill and placement process.  We manufacture the following accessories:

  • 2” Dia. Round Attachment Washers for finishing off the top Flat Tab of the AG
  • 2.5” Square (4) Stud DMX Quik-Clip for attachment of the AG to the substrate
  • 2” Wide Mold Strip for finishing off vertical terminations of the membrane
  • 1.25” Long Anodized Steel Nails for securing the round and square fasteners
  • Power Actuated Installation Nail Guns for attaching the membrane to the substrate



How does water get into my basement?

Most poured concrete 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.  Moisture can also get into basements through capillary action  which acts like a sponge and draws water from areas of high concentrations (exterior soils) to areas of low concentrations (interior basement walls) especially in the presence of minimal foundation protection. 

DMX AG™ isolates these cracks and capillaries from the surrounding wet soil, to prevent this from happening, and provides a clear negative side drainage path for ground moisture to be redirected to the footing drains, eliminating lateral water flow into the basement.

How does DMX AG™ work?

DMX AG™ creates an air gap between wet soil and your basement wall, allowing the poured concrete and concrete block walls to breathe and provides a clear negative side drainage path to disperse any ground moisture that might find it 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, and when installed according to our installation guide 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. 

Why does DMX AG™ have dimples?

The dimples in DMX AG™ create a negative side air gap that eliminates the hydrostatic load (pressure) that forces 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 potentially could trap moisture against the wall should it get behind the membrane and force water intrusion into the basement.  The key to the success of the DMX AG™ is the dimple for the control of hydrostatic pressure and ground moisture control.

Can water get behind DMX AG™?

In most cases – highly unlikely when installed properly. However, even if the sheet was damaged and water got behind it, the air gap would prevent water from getting into the home by diffusing hydrostatic pressure build up and providing a drainage path to the footing tile. Because there is no direct soil contact with the wall, water just drains down to the footing and away through the drainage system.

The configuration of the dimple structure allows for continuous flow of water along the path of dimples and air gap to the footing drain, and resists the transport of drainage water to the foundation wall.  The “conical” shape of the dimple provides a low resistance to vertical water flow and minimizes lateral movement of water, providing maximum protection of the foundation wall from moisture contact with the wall. 

Do I need special fasteners to install DMX AG™?

You will need DMX Quik Clips and plastic washers for attaching the membrane to the foundation. Use with 1¼ inch concrete nails for poured or concrete block 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 full details, download our DMX AG Installation Manual. What types of foundation can I use DMX AG™ on? Every type you can think of—poured concrete, Insulated Concrete Forms (ICF), block wall, and wood.

Can I use DMX AG™ for repairs and renovations?

Absolutely! DMX AG™ 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 AG™?

Yes! We suggest installing an extra row of DMX Quik Clips in the body of the DMX AG to help stand up to the vertical pressure heavy clay soil can exert on the membrane and wall.

(See our Installation Manual for details.

Is DMX AG™ just for walls?

Not at all! You can use DMX AG™ for underslab vapour barriers, 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!  If your application calls for more robust drainage than simply moisture protection, you can use our DMX Drain™ Geocomposite Drainage Boards which are economical and very effective.

  • * Check with local building Codes on the use of exposes plastics and accepted practices for interior uses
  • ** Drainage is very important in retaining wall designs, ensure appropriate drainage is accounted for before installing DMX AG™ (ie; sand, gravel, DMX Geocomposite)

Can I use DMX AG™ without a perimeter drainage tile?

Yes, but only in areas where there has been extensive geotechnical studies done to determine that a drainage tile is not necessary and the local water tables are not expected to cause any problem in terms of load bearing for the soil conditions.  Consult you local Building Code or Regulations on the implementation and requirements regarding the installation of weeping tile or drainage pipes as defined in the Codes or by a Professional Engineer competent in soils investigations.

TAMKO Sheet Waterproofing Membrane 

About TW-60 Sheet Waterproofing Membrane

About Tamko Water Base Primer

Product Video

TW-60 CSI Specs

TW-60 Limited Warranty


Tamko Products Available through BuildBlock




Total Sq.Ft.


Tamko Sheet Waterproofing Membrane 60mil – Full size roll

39.375″ x 61′

200 sq.ft.


Tamko Sheet Waterproofing Membrane 60mil – 12 in. rolls (Box of 3)

12″ x 61′

200 sq.ft.


Tamko Water Based Primer

5 gallon pail


TAMKO TW-60 Sheet Waterproofing Membrane

TAMKO TW-60 is a flexible, self-adhering, rubberized asphalt sheet waterproofing membrane with a polymer film on the surface and a removable treated release film on the adhesive side.

TW-60 is especially well suited for below-grade waterproofing of foundation walls, tunnels, earth shelters, ICF forms, and similar structures. The TW-60 membrane is also suitable for waterproofing plaza decks, parking decks, balconies, and terraces.

  • Consistent 60 mil product thickness
  • Excellent tensile, elongation, and permeance characteristics
  • Rubberized asphalt (SBS modified) sheet and polymer surfacing provide excellent waterproofing protection
  • Treated release film for easier installation and handling
  • Available in factory pre-cut widths of 6”, 9”, 12”, 18” and 39-3/8” rolls
  • High temperature resistance up to 240ºF.

Application Instructions

  • TW-60 Application Instructions
  • Use TWP-1 Quick Dry Primer or TWP-2 Water Based Primer to help prepare surfaces to receive TW-60 Sheet Waterproofing Membrane.

Data Sheets





TW-60 Sheet Waterproofing Resources

About TAMKO TWP-2 Water Base Primer

TWP-2 Water-Based Primer

  • Provides excellent bond to asphalt, concrete, masonry, DensGlass® and DensGlass® Gold sheathing, EPS/XPS (ICF), OSB, plywood and metal surfaces
  • Ideal for use in preparing surfaces to receive TAMKO TW-60 sheet waterproofing membranes
  • Apply with a long nap roller or spray equipment at the rate of 350 to 400 square feet per gallon
  • Mix thoroughly before using
  • Water-based-excellent primer for use on ICF surfaces.
  • Available in convenient 5 gallon pails

Data Sheets




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