Gerband Fortax 6400 Airtight Sealant is an internal adhesive, used for permanent connections of airtightness layers.
Fortax 6400 Airtight Sealant is a system component of the Gerband rooftite System. You can use it in the contact adhesive process, in accordance with DIN 4108-7, EnEV, SIA 180 and NORM B8110-2.
Our product is also an excellent solution for permanent bonding applications. It’s ideal for connections of all standard vapour barriers, as well as airtightness layers.
Please note under the DIN 4108-7 the general suitability of the joining partners.
You should keep the substrates for the Gerband Fortax 6400 adhesive sealing clean and dry. Before application, remove impurities such as dust, grease, oil, tar, bitumen and release agents like as surfactants. Sandy and rough surfaces may need to be pre-treated with the Gerband 6300 Primer Paint.
Preparation of the application surface
The substrates for the FORTAX 6400 adhesive sealing must be clean and dry. Impurities such as dust, grease, oil, tar, bitumen and release agents like as surfactants and silicones must be removed. Sandy and rough surfaces may need to be pre-treated with the Gerband Primer 6300.
Apply the FORTAX® 6400 adhesive sealant with an 8mm thick bead on the fixed surface. Increase the sealant thickness where the surface is uneven.
In case of wet application
If ‘wet bonding’, the air-tightness-layer must be gently press down according to the DIN 4108-7 with a relief loop so that a 3-4 mm thick an adhesive seal layer is maintained.
In case of dry application
After a short drying time, pressure is required to ensure a strong bond to the airtightness layer.
Bonding of the airtightness layer
- The air-tightness-layer must be stress-free and fastened.
- Check that completed connections are secure.