A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Experience from Using Prefabricated Elements for Adding Insulation and Upgrading of External Façades
Abstract At present, there are a number of rational prefabricated systems on the market for adding insulation and upgrading exterior walls and façades. A number of such systems were tested and evaluated by Swedish housing companies. This process showed that none of the solutions are fully developed and that, during the projects that were studied, much of the development work took place during the renovation project. The weak points of the systems were generally found to be the connections between the elements and the existing façade, and details such as windows. In several cases, the housing companies had problems with a lack of clarity regarding responsibilities, between those who were to deliver the system and those who were to install it, as well as the division of responsibility for connection and details, such as between a window and the existing building. It is crucial that such issues are solved before a system is designed, produced, and installed. There were also problems with inaccuracies in the measurements of the existing building, which meant that both internal and external adjustments of the prefabricated elements needed to be done at the site. The main barriers to wider adoption of the prefabricated façade systems are that few companies are willing to take total responsibility for the systems and that the systems in their current form are still more expensive than traditional additional insulation and a new façade layer. Actions to be taken in order to overcome these barriers are the further development of products and systems, as well as the change to prefabrication and an assembly on-site system. The systems must become more economically competitive, and the volume of ordered and produced façade elements must increase. Calculation models should be developed that can be used as funding frameworks to demonstrate the advantages of using such prefabricated systems.
Experience from Using Prefabricated Elements for Adding Insulation and Upgrading of External Façades
Abstract At present, there are a number of rational prefabricated systems on the market for adding insulation and upgrading exterior walls and façades. A number of such systems were tested and evaluated by Swedish housing companies. This process showed that none of the solutions are fully developed and that, during the projects that were studied, much of the development work took place during the renovation project. The weak points of the systems were generally found to be the connections between the elements and the existing façade, and details such as windows. In several cases, the housing companies had problems with a lack of clarity regarding responsibilities, between those who were to deliver the system and those who were to install it, as well as the division of responsibility for connection and details, such as between a window and the existing building. It is crucial that such issues are solved before a system is designed, produced, and installed. There were also problems with inaccuracies in the measurements of the existing building, which meant that both internal and external adjustments of the prefabricated elements needed to be done at the site. The main barriers to wider adoption of the prefabricated façade systems are that few companies are willing to take total responsibility for the systems and that the systems in their current form are still more expensive than traditional additional insulation and a new façade layer. Actions to be taken in order to overcome these barriers are the further development of products and systems, as well as the change to prefabrication and an assembly on-site system. The systems must become more economically competitive, and the volume of ordered and produced façade elements must increase. Calculation models should be developed that can be used as funding frameworks to demonstrate the advantages of using such prefabricated systems.
Experience from Using Prefabricated Elements for Adding Insulation and Upgrading of External Façades
Mjörnell, K. (author)
2016-01-01
19 pages
Article/Chapter (Book)
Electronic Resource
English
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