Surface preparation
All surfaces must be clean and dry, free from any dust and grease or anything which is likely to impair adhesion of the sealant. Residues of old sealant or other materials as well as mould on the substrate must be removed completely.
Joint dimensions
The movement capability of the sealant as well as local regulations must be considered. In general, the joint width must be > 10mm and < 35mm and the joint width should be twice the depth.
Sealant application
The sealant should be applied ensuring that the seal is filled. Smoothing off the seal ensures good contact between the sealant and the bonding surfaces. Directly after application, smooth off with an UniBond Sealant Smoother Tool. Remove any tape immediately, before surface skin has formed on the sealant. Smooth over any proud sealant edges immediately.
Cleaning and finishing
Fresh sealant may be cleaned with a cloth soaked in white spirit or alcohol (e.g., methylated spirit). Cured sealant can be removed by scraping (e. g. using a razor blade) or by using a special silicone remover product.
Drying time
The sealant will be touch dry in 30 mins and fully dry in approx. 24 hours*
*Curing speed is dependent on temperature, air humidity and on the dimensions of the joint.
