GENERAL PURPOSE SILICONE
A general purpose silicone for small sealing jobs
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Features & benefits
Bostik General Purpose Silicone is an industrial grade, waterproof, flexible neutral cure silicone sealant designed for sealing a wide variety of surfaces including gutters, downpipes, flashings and vents, exterior walls and plumbing applications. Resistant to weathering, including UV and ageing. Bonds to glass, masonry, ceramics, cement, brick, timber, PVC pipe, metal and aluminium.
- Suitable for interior and exterior applications
- Specifically designed to meet New Zealand conditions - Unaffected by rain, snow, extreme temperature change and constant ultra violet exposure
- Excellent adhesion properties - Permanently flexible
- Waterproof
Downloads & resources
Bostik DIY New Zealand Repair - General Purpose Silicone Technical Data Sheet (199.02 KB)
This file is stored on an external website, please follow the link
How to use
Ensure all surfaces that will be in contact with the sealant are clean, dry, and free of dust, dirt, rust, oil, and other contaminants.
Non-porous substrates should be clean with solvent and wipe dry immediately with cloth before the solvent evaporates from the surface. Porous surfaces should be roughening with a stiff-bristled brush, rubbed down or sandblasted.
Complete all painting before applying. Use masking tape each side of the joint to simplify clean up and protect surfaces.
Application
- Unscrew cap and pierce end of tube with reverse end of cap to open.
- Apply on surface in steady flow by hand pressing.
- Tool off/smooth off before skin forms.
- If used, remove masking tape immediately until sealing tolling is complete.
- Sealant surface will skin in approx. 10 minutes and is touch dry in 30 minutes.
- Content fully cures in 48 hours.
Cleaning
- Remove excess uncured sealant with a mineral turpentine-soaked cloth.
- Fully cured excess sealant can be removed by trimming with a sharp knife.
Important
Oxime silicone sealants (both standard and sanitary grade versions containing fungicide) will tend to display a slight colour shift with age and exposure to ultraviolet light. Typically this colour shift, or yellowing, is not visually significant in the field. Also it is not necessarily confined to translucent coloured materials, and the fungicide itself does not have any adverse impact. This is a worldwide phenomenon affecting this cure type of silicone sealant.
Misapplication or contamination of an oxime sealant whilst curing will exacerbate the inherent condition. Specifically, chemical exposure to certain agents such as chlorinated cleaning solutions (ie, bleach), chemical solvents, and the fumes of some paints (enamel or solvent – containing types where not fully dried) may tend to magnify this yellowing change particularly where the sealant is still curing.
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