Company Announcement - The relevant technical processing guidelines for insulation materials must be observed for the thermal insulation of existing or new buildings with external thermal insulation composite systems. This also impacts the integration of windows, doors and all components leading through the composite system. In addition, these guidelines are relevant for lightning protection components.

Lightning protection systems, in conjunction with an external thermal insulation composite system, pose challenges for designers and installers, particularly with regard to the installation and integration of test joints for these systems. The test joint products previously available on the market were often installed on the roof level or in flush-mounted boxes, exposing them to increased pollution.

The expandable test joint box for external thermal insulation composite systems from DEHN is an innovative product for designers and installers which allows for flexible and proper installation. The telescopic test joint box can be gradually adjusted for insulation material thicknesses between 90 and 140 mm and can therefore be used for common insulation material thicknesses. An additional spacer must be used for insulation material thicknesses between 140 and 320 mm. The spacer has a Styrofoam core to prevent thermal bridges and can be shortened from 200 to 50 mm in 10 mm interval steps.
The down and earthing conductor can be easily led into the box, and there is sufficient space for installing a clamp. Thanks to the test joint box’s dimensions of 140 by 180 mm and a depth of 80 mm, continuity and earthing measurements for lightning protection systems can be easily performed by means of measuring callipers.

The proper installation is finished by mounting a stable and aesthetically appealing stainless steel cover, which protects the test joint from rain. A UV and weather-resistant foam sealing is integrated in the cover to ensure that the test joint is fully protected, whilst the edge of the cover exerts sufficient pressure on the sealing at the corners. This test joint box for external thermal insulation composite systems is an innovative, universal and practical solution for integrating a test joint in external thermal insulation composite systems.

The market leader DEHN, a globally active family-owned electrotechnical company with more than 1600 employees worldwide, offers innovative products and solutions as well as comprehensive services in the field of surge protection, lightning protection and safety equipment. DEHN focuses on the protection of system and building technology, the transportation, telecommunication and process sector, photovoltaic systems, wind turbines, etc. The company's continuous growth is based on more than 100 years of tradition and experience as well as highest quality standards and consistent customer and market orientation throughout the world.