Review of the 13th Leipzig Sealing Seminar

On 28 January 2020, MFPA Leipzig GmbH hosted the 13th Leipzig Sealing Seminar with the participation of the German Institute for Construction Technology (DIBt Berlin) and the German Institute for Standardization (DIN). The event once again enjoyed a great response and was very well attended with 200 participants and 12 exhibitors from all over Germany. The focus was on the wide-ranging changes to standardization and building regulations, together with the many resulting issues for planners, builders, manufacturers, experts and design firms for the most diverse sealing applications. 

After a brief welcome from event organizers Dr-Ing. Jörg Schmidt and Dr-Ing. Ute Hornig (MFPA Leipzig), Dipl.-Ing. Bettina Hemme (DIBt Berlin) kicked off the event with a talk on General Technical Approvals and General Design Approvals for unregulated (new) sealing products. 

Dipl.-Ing. John Gnamou (DIBt Berlin) followed this with a presentation on various aspects of the use of sealing products with European Technical Assessments or with General Technical Test Certificates, taking coated metal water bars as an example. 

Dipl.-Ing. Brigitte Strathmann (DIBt Berlin) explained the certification of the environmental sustainability of construction products in general, and the technical regulations for the environmental sustainability of concrete raw materials in particular. She then provided information on the current requirements regarding the release of mecoprop (MCPP) from bitumen membranes and the release of hazardous substances from injection materials. 

Dipl.-Ing. Gerhard Klingelhöfer spoke about the planned changes to DIN 18533, which will restrict the use of sealing membranes as barriers in walls where there is a transfer of transverse forces. The second part of his presentation concerned the issue of whether sealing construction methods with drainage in accordance with DIN 4095 are still appropriate, with information on the current status of the review of this standard and the new leaflet on drainage from VBUH and ZDB. To close, he gave brief information on the new Strahlenschutzgesetz [German Radiation Protection Act] and draft standard DIN 18117, Part 1, “Construction and ventilation measures for radon protection”. 

A lively and sometimes controversial discussion followed the presentation by Dipl.-Ing. Christian Herold, who tackled the current issue of whether sealing with PMBC at the transition to water-impermeable floor slabs in accordance with DIN 18533 is a generally recognized technical rule, going into the factual basis and background of a disputed ruling by the Hamm Higher Regional Court. He also provided information on the commentary on sealing standards recently published by Beuth Verlag. 

Dipl.-Ing. Matthias Rudolph (MFPA Leipzig) then provided comprehensive information about the rules, materials, procedures and constraints for regulated and unregulated injections for the planned or upgraded waterproofing of reinforced-concrete structures. 

Dipl.-Ing. Thomas Wagner gave a presentation on the design details and functional certification of building penetrations in water-impermeable constructions. He provided general information on the technical rules and planning tools produced by FHRK e.V. for penetrations, and spoke more specifically about special issues when sealing penetrations in buildings that have been built using the fresh-concrete-composite approach. 

As the last speaker of the day, but no less interesting for this, Professor Holschemacher of HTWK Leipzig stood in for Prof. Fingerloos with a polished and technically well-founded presentation on water-impermeable structures in accordance with the new water-impermeability guideline. 
The 13th Leipzig Sealing Seminar was once again a successful combination of presentations and specialist exhibition for intensive networking, exchange of information, and lively discussion with experts and interested parties. 

We are grateful to all speakers, exhibitors and guests for the success of the event and look forward to seeing you again at the 2nd Leipzig Water Protection Day on 19 January 2021, and/or at the 14th Leipzig Sealing Seminar in January 2022. 

See you soon!