{"id":3358,"date":"2022-05-03T08:04:23","date_gmt":"2022-05-03T06:04:23","guid":{"rendered":"https:\/\/www.froewis.info\/?p=3358"},"modified":"2023-02-28T13:54:16","modified_gmt":"2023-02-28T12:54:16","slug":"doubling-up-with-etics-things-to-keep-in-mind-part-2","status":"publish","type":"post","link":"https:\/\/www.froewis.com\/en\/expert-articles\/doubling-up-with-etics-things-to-keep-in-mind-part-2\/","title":{"rendered":"Doubling up with ETICS: Things to keep in mind \u2013 Part 2"},"content":{"rendered":"\n

An ageing external thermal insulation composite system need not be replaced with a new one: Your ETICS fa\u00e7ade can get a secondary insulation, which saves material, time and money \u2013 up to \u20ac 50\/m2<\/sup>. However, you must keep a few things in mind.<\/strong><\/strong><\/p>\n\n\n\n

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  1. National Technical Approval<\/strong><\/li>\n<\/ol>\n\n\n\n

    The installer must provide a guarantee to the homeowner that the existing external thermal insulation composite system has been executed flawlessly, based on the National Technical Approval or a case-by-case approval.<\/p>\n\n\n\n

    2. Fire safety<\/strong><\/p>\n\n\n\n

    When doubling up an ETICS, the applicable building regulations for fire safety requirements must, of course, be complied with.<\/p>\n\n\n\n

    3. Checking stability and load-bearing capacity<\/strong><\/p>\n\n\n\n

    Doubling up an ETICS requires the load-bearing capacity of the old ETICS to be suitable for secondary insulation. To this end, the old ETICS is opened up in several places to check whether the adhesive between the old ETICS and the substrate is intact.<\/p>\n\n\n\n

    The doubling up of old ETICS rail systems and no longer load-bearing adhesive systems can be done based on case-to-case approval.<\/p>\n\n\n\n

    4. Energy saving and thermal insulation<\/strong><\/p>\n\n\n\n

    According to the German energy saving regulation Energieeinsparverordnung EnEV, no requirements are necessary for thermal transmittance or U-value as long as the exterior walls remain unchanged. However, impairments will not be tolerated, and deconstructing an ETIC system without installing a new one is not permitted.<\/p>\n\n\n\n

    5. Climate-induced moisture protection<\/strong><\/p>\n\n\n\n

    When choosing a doubling up system, technical aspects related to moisture protection should be considered, too.<\/p>\n\n\n\n

    6. Execution and connection to other components<\/strong><\/p>\n\n\n\n

    The laying of the insulation and the connection to other components play a crucial role. The insulation boards of the new ETIC system should be laid with the joints offset from the insulation boards of the old system. The anchors must be set in the load-bearing substrate according to the instructions of the system manufacturer.<\/p>\n\n\n\n

    7. Sound insulation<\/strong><\/p>\n\n\n\n

    If special sound insulation requirements are necessary it is recommended to carry out a building acoustics test.<\/p>\n\n\n\n

    Doubling up provides the following advantages<\/strong><\/p>\n\n\n\n