Hello,
I am planning to build a timber frame house and insulate the exterior with wood fiber insulation boards, which will then be covered with plaster. The installation of the boards using tongue and groove joints is mostly clear. However, how are the corners treated? Are the corners simply butted together, or are they glued to ensure a completely airtight seal? If they are glued, what type of adhesive is used? Unfortunately, I couldn’t find any information from various manufacturers. It would be great if someone could explain this to me or even provide links or PDFs. Thank you very much.
Best regards
I am planning to build a timber frame house and insulate the exterior with wood fiber insulation boards, which will then be covered with plaster. The installation of the boards using tongue and groove joints is mostly clear. However, how are the corners treated? Are the corners simply butted together, or are they glued to ensure a completely airtight seal? If they are glued, what type of adhesive is used? Unfortunately, I couldn’t find any information from various manufacturers. It would be great if someone could explain this to me or even provide links or PDFs. Thank you very much.
Best regards
Manufacturers of wood fiber thermal insulation boards provide relevant datasheets for installation and plaster systems on their websites (Steico, Pavatex, etc.). Typically, corners are supported by the timber frame construction. Screwing insulation boards together at the corners into the insulation board itself is not common and, to my knowledge, not feasible. The insulation boards are fully reinforced within the plaster system; edges and corners are integrated and protected using special plaster profiles embedded in this reinforcement layer.
If you plan to carry out the work yourself, carefully read the manufacturers’ product datasheets and adhere strictly to the manufacturer’s material and construction system—this applies especially to the entire plaster system. Without in-depth knowledge of building construction and building physics, you should not deviate from these guidelines.
If you plan to carry out the work yourself, carefully read the manufacturers’ product datasheets and adhere strictly to the manufacturer’s material and construction system—this applies especially to the entire plaster system. Without in-depth knowledge of building construction and building physics, you should not deviate from these guidelines.
Of course, I won't do my facade myself without any prior knowledge or instructions. But I was simply interested in it beforehand. Meanwhile, I have also received a response from Pavatex. They wrote that joints up to 5mm (0.2 inches) should be filled with their joint filler. However, I have also heard of cases where joints were not filled. But I wonder if it will really be watertight then.