The Problems

Installing foundation wall waterproofing in blind side applications can present several challenges. Conventional drainage boards have been commoditized, driving manufacturers to cost-savings efforts that include using cheaper geotextiles and compromised performance. As a result, incidents of clogging have increased. In blind side applications, where installations applied to soil retention systems may or may not have waterproofing installed, ineffective drainage can lead to critical failure in locations especially difficult to remediate.

The Solution

DELTA®-TERRAXX is the ideal solution for blind side drainage requirements. It offers the ideal combination of compressive strength, drainage performance, handling, and installation ease.

The large, light, and easily cut rolls save labor and make installation much easier than traditional drainage composites. Large areas are covered more quickly and with fewer rolls, saving labor and materials.

Designed with durability to last the life of the building, DELTA®-TERRAXX provides effective drainage in locations difficult, if not impossible, to fix after the fact.

It also provides the ideal surface against which to install waterproofing, protecting from protrusions and cavities that can otherwise compromise the waterproofing system.

The unique geotextile ensures that DELTA®-TERRAXX won’t clog. The special manufacturing process means that in situ soil pressures will compromise neither the drainage space around and between the dimples nor the drainage rate.

The DELTA®-TERRAXX drainage system ensures an ideal water drainage and permanently protects foundation walls from frost damage.

Product Details
Product Benefits

 • Heat-bonded special clog-resistant geotextile
• Large 2 m wide rolls for faster installation
• Lightweight and easily cut
• Optimal combination of compressive strength and drainage capacity
• Compressive strength of 8,969 psf (429 kPa)
• Tested long-term durability
• Maintains drainage space, even after placement of concrete
• Available in rolls 2 m (6.6’) by 12.5 m (41’)

• Suitable for blind side applications down to seven stories below grade
DELTA®-TERRAXX PLUS has a self-adhering flat tab, allowing it to lay flat and stay in place
• Easy to carry and easy to cut
• Drains reliably without clogging
• No loss of drainage capacity caused by pressure