We accept the challenges of our clients by investing in new technologies that allow us to make EPDM membranes for any kind of application.
From water storage basins or irrigation channels where large flat EPDM sheets are needed in one piece to three -dimensional membranes for wrapping cylindrical tanks – anything is possible now!
Although it requires meticulous workmanship and the implementation of large investment programs, we have chosen for our clients the most professional technical solution – EPDM press vulcanization – Hot Bond precisely to offer this material with exceptional characteristics a tailor made workmanship.
Two EPDM sheets are placed with an overlap of 3 cm on top of each other, between them is a raw rubber band; a pressure of 5 kp / cmp at a temperature of 200°C for 2 minutes carries out the vulcanization of the band and the fusion of the two materials .
Using this 100% safe technology we make EPDM membranes of any size and shape;three-dimensional elements such as corners, openings for luminaires or pipe fittings are attached and vulcanized in accordance with the project dimensions.
The membrane is then packed and packaged properly for transport; a positioning and scrolling diagram accompanies each membrane to facilitate installation.
Thermobond seaming technique
The Thermobond seaming technique provides a fast, easy method for producing quality thermally welded seams. All site seaming is performed with a thermal hot wedge. Details like pipe connections, penetrations, overflows and flashings are seamed with a hot air gun. The combination of an elastic, vulcanised rubber membrane, prefabricated boots, engineered details and reliable, uncomplicated thermal welding in all types of weather provides a maximum of security and a homogenous, elastic waterproofing membrane.
During production, a thin layer of a ther-moplastic rubber (TPE) is laminated to oneside of the membrane resulting in a vulcanised EPDM membrane which can be heat seamed. This technique offers the best of both worlds: the advantage of elastomers and the advantage of thermoplastics. The combination of Elastoseal EPDM and Thermobond seaming provides the superior service life and performance of EPDM and the thermal seaming performance of thermoplastic membranes.
The engineered system panels made to size
The Elastoseal Geomembranes are prefabricated, using thermal welding to form large, homogenous panels. The size of each panel is often 500‐1500 sqm:s. The topography of the site, conditions and equipment will dictate the size and weight of each panel. Size and shape of each panel is individual, depending on shape, depth and size of the pond or water containment.
Engineered technical solutions can be pre-fabricated in advance in the fabrication plant, providing ready-made sections, pipe boots and special attachments.
Hot Bond Vs. Self-Adhesive Butyl Tape (Splice Tape)
Hot Bond vulcanization of EPDM membranes is a process executed by automatic equipment operated by human factor.
Bonding the EPDM with butyl tapes is a work that can only be performed by well-qualified personnel , the quality of the joints being conditioned by the quality of the human factor.
A membrane made to size with all the details vulcanized to the press offers the guarantee of a product manufactured in workshop conditions with automatic equipment.
The combination with self-adhesive tapes of an EPDM membrane in site conditions imposes suitable climatic factors:
- lack of moisture
- lack of wind and dust
- temperatures above 10°C
- a well prepared plan support layer
Often meeting these conditions is difficult to achieve on site , and the quality of the joints has to suffer.
Press vulcanization of EPDM membranes creates a fusion of the two materials, the result being chemically stable and having mechanical properties identical to those of the material.
Self-adhesive tapes use the principle of chemical reactions, therefore the failure to observe the technological steps as well as the storage in inappropriate conditions of the materials (protected from the sun’s rays at temperatures below 25°C) produce significant defects to the executed workmanship.
Execution of membranes according to the specifications of the project under workshop conditions allows the optimization of material losses .
The use of rollers with standard widths and the gluing of the membrane on the site with self-adhesive strips generates losses from cutting which are reflected in the final cost of the project.
The installation of a membrane made to size can be done in record time regardless of the climatic conditions.
Joining with butyl bands of EPDM membranes tailored to site conditions can be cumbersome and conditioned by climatic factors
