Pre-treatment
UniBond Weather guard Roof and Gutter Sealant is supplied as a ready-to-use butyl rubber sealant and can be applied from the original packaging with no special pre-treatment.
Surface preparation
All surfaces must be clean, dry and, free from any dust, grease or anything else which may be detrimental to correct adhesion of the sealant. Surface temperature should be between +5°C and +40°C. Residues of old sealant or other materials as well as mould on the substrate must be removed completely. Degrease using a solvent soaked cloth (alcohol or white spirit) followed by wiping with a clean dry cloth.
Sealant application
The sealant should be applied ensuring that the joint is completely filled. Smoothing off the seal ensures good contact between the sealant and the bonding surfaces.
Cleaning and finishing
Fresh sealant may be removed using a cloth soaked in white spirit or alcohol. Semi-dry sealant can be removed by scraping or abrasion (e. g. using a knife or wire brush).
