Construction products detail

Membranes for use as roof or wall underlay

Membranes for use as roof or wall underlay are installed underneath the roofing of pitched roofs or underneath the external wall cladding. They serve as an additional rainproofing measure to prevent the ingress of water or wind from the outside.

Regulatory framework

Membranes for use as roof or wall underlay do not require a regulatory verification of fitness for use or application, cf. MVV TB, no. 2.2.1.6.

In many cases, underlays are covered by harmonised standards DIN EN 13859-1 and -2.

As a Technical Assessment Body, DIBt can issue European Technical Assessments (ETAs) for underlays that are not or not fully covered by these harmonised standards based on European Assessment Documents (EADs) still to be developed or already existing, such as

  • EAD 030218-XX-0402 Membrane for use as roof underlay

European Technical Assessment (ETA)

To start the ETA procedure, please submit the form below. We will then check if the prerequisites for issuing an ETA are met, i.e., in particular, if the product is not fully covered by an existing harmonised standard. If the prerequisites are met, we will check whether a European Assessment Document (EAD) covering the requested assessment scope already exists or still needs to be developed. If an EAD needs to be developed or amended, a complete technical file needs to be established before the procedure can begin.

Subject concerned Applicant Decision no. Issued on
DELTA-PENTAXX DELTA-PENTAXX PLUS Dörken GmbH & Co. KG Wetterstraße 58 58313 Herdecke DEUTSCHLAND ETA-20/0285 18.01.2021
DELTA-FOXX / DELTA-FOXX PLUS Dörken GmbH & Co. KG Wetterstraße 58 58313 Herdecke DEUTSCHLAND ETA-20/0384 14.12.2021
DELTA-MAXX PLUS Dörken GmbH & Co. KG Wetterstraße 58 58313 Herdecke DEUTSCHLAND ETA-20/0405 07.07.2023
mdm® Ventia Neo 170 mdm® Ventia Neo 170 T mdm NT Sp. z o.o. ul. Bestwinska 143 43-346 BIELSKO- BIALA POLEN ETA-21/0227 12.07.2021
Plastovent Morizz Plastovent Morizz SK Plastoform GmbH Herbert-Frank-Straße 20 72178 Waldachtal-Salzstetten DEUTSCHLAND ETA-21/0856 02.11.2021
DELTA-XX PLUS® L Dörken GmbH & Co. KG Wetterstraße 58 58313 Herdecke DEUTSCHLAND ETA-22/0388 11.10.2022
DELTA-XX PLUS® U Dörken GmbH & Co. KG Wetterstraße 58 58313 Herdecke DEUTSCHLAND ETA-22/0389 11.10.2022
DELTA-XX PLUS® H Dörken GmbH & Co. KG Wetterstraße 58 58313 Herdecke DEUTSCHLAND ETA-22/0593 04.11.2022
DELTA-XX PLUS® S Dörken GmbH & Co. KG Wetterstraße 58 58313 Herdecke DEUTSCHLAND ETA-22/0731 02.12.2022
DELTA-FASSADE 20 / DELTA-FASSADE 20 PLUS Dörken GmbH & Co. KG Wetterstraße 58 58313 Herdecke DEUTSCHLAND ETA-22/0901 03.03.2023
DIFFLEX THERMO TPU ND SK BWK Dachzubehör GmbH Birkichstraße 1 74549 Wolpertshausen DEUTSCHLAND ETA-23/0531 21.12.2023
SOLITEX QUANTHO 3000 / SOLITEX QUANTHO 3000 connect MOLL bauökologische Produkte GmbH pro clima Rheintalstraße 35-43 68723 Schwetzingen DEUTSCHLAND ETA-23/0532 04.12.2023