Benx ELS50, ELS 70 and ELSHT 98
For fixing the Benx TS Rail system on NHBC projects using a light weight steel frame wall. Carbon steel self-tapping screws for fixing into sheathing boards. Can also be used to fix base beads onto sheathing boards.
Self-tapping fixings used for fixing rail supports used as part of the SPSenvirowall TS Rail system. For fixing into sheathing boards, but can cut into lightweight steel framed sections supporting the sheathing board
ELS50 for cavities up to 20mm
ELS70 for cavities 21 – 40mm
ELSHT98 for cavities 41 – 50mm
Mechanical Fixing of Insulation to Various Substrates
Mechanical fixings or anchors play an important function in the way in which External Wall Insulation Systems perform under building and dynamic loadings. The role of the fixing is far greater than simply holding the insulation in place until the render is applied, it has to accommodate movement within the structure, positive and negative wind pressure and supporting the self-weight of the system to name a few key functions.
There are a number of different fixings that can be used and it is important to select the fixing for the application and in some instances this requires on site pull out tests to be completed to determine the performance of the fixing with the substrate.
Based on site conditions and location along with site based test results, a specific fixing pattern may be required. Please contact the Benx technical team for advice.
All masonry based EWI fixings are tested and Certified in accordance with ETAG 014 ‘Plastic Anchors for ETICS’. Within this standard there are 5 categories for which the fixings can be Certified as being acceptable to be used in and these can be seen in the table below. If a substrate is not categorised then on site testing must be done.
Hammer or Screw Set
Screw with Hex Head 5.5mm
Minimum Embedment Depth
Drill Hole Diameter
Quantity Per Box
- The TS Rail system is extensively used on lightweight framed structures of either metal or timber and consists of a pre-engineered insulation board that...
- RCM Multipurpose – A1 non-combustible, cellulose fibre cement board RCM Multipurpose is a highly versatile cellulose fibre cement building board,...
- High-performance cement bonded particle building boardRCM Cemboard is a rigid, medium density, high-performance cement bonded particle building board...