**Use of Bonded Joints for Fastening Sheet-Metal Components to Contemporary Facades Fitted with an External Thermal Insulation Composite System with Thin-Layer Acrylic Plaster †**

**Jiˇrí Šlanhof , Aleš Pr ˚ucha \* , Barbora Neˇcasová and Adam Bohácek ˇ**

† Presented at the 10th MATBUD'2023 Scientific-Technical Conference "Building Materials Engineering and Innovative Sustainable Materials", Cracow, Poland, 19–21 April 2023.

**Abstract:** This paper deals with the issue of fastening sheet-metal components on the facades of contemporary buildings that are massively insulated with external thermal insulation composite systems. This research focused on facades with thin-layer acrylic plaster and sheet-metal components made of aluminium, copper and hot-dipped galvanized sheet metal. Two different test methods and test sample geometries were used to determine the most critical aspects for the studied application sectors. Surprisingly high tensile properties as well as shear stresses in the bonded joints were recorded for all the selected combinations. The presented results confirmed the assumed benefits for the construction industry and the future practical use of this technology in construction, although the durability of a bonded joint will always depend mainly on the quality of the bonded substrate.

**Keywords:** adhesion; adhesive; joint; sheet-metal construction; facade; sheet-metal components; thin-layer plaster

**Citation:** Šlanhof, J.; Pr ˚ucha, A.; Neˇcasová, B.; Boháˇcek, A. Use of Bonded Joints for Fastening Sheet-Metal Components to Contemporary Facades Fitted with an External Thermal Insulation Composite System with Thin-Layer Acrylic Plaster. *Mater. Proc.* **2023**, *13*, 36. https://doi.org/10.3390/ materproc2023013036

Academic Editors: Katarzyna Mróz, Tomasz Tracz, Tomasz Zdeb and Izabela Hager

Published: 16 February 2023

**Copyright:** © 2023 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https:// creativecommons.org/licenses/by/ 4.0/).
