The Problems

Root barriers are necessary any time an asphaltic roof membrane is used in a garden roof system. The roots of trees, shrubs and even weeds are very likely to penetrate the roof membrane without a root barrier. Even with a substantial growing medium thickness, the roots of plants can penetrate the roof membrane.  

The Solution

DELTA®-ROOT BARRIER allows free drainage, is impact resistant, and resists penetration by aggressive plant roots. DELTA®-ROOT BARRIER is ideal for protecting asphaltic roofing membranes in a garden roof application. 

Product Details
Product Benefits
  • Composed of a 15 mil (380 µm) polyethylene sheet 
  • High strength protects the roof membrane from aggressive plant roots.
  • Stabilized against oxidation, the product provides long-term performance.
  • It will not absorb water and is non-toxic.
  • Tear resistant, it protects the underlying roof membrane from construction traffic during installation.
  • Large rolls make installation easy by minimizing overlaps and reducing application time. Simply roll it out and unfold it over the waterproofing membrane.
  • A root barrier is not required when using non-asphaltic roofing membranes that act as natural root barriers, such as TPO, PVC or EPDM. 

Product Details

Technical Data