Silicone sealants are extraordinarily versatile, one component products ideal for finishing joint, seams and other gaps, as well as keeping out moisture and sound. Whether you want permanent or temporary adhesion silicone sealants bind together materials that used to be hard to unite, such as glass, metal and stone. Silicone sealants are also used to produce durable bonds that can withstand high temperatures, remain flexible after curing and resist chemicals and water. These qualities make them particularly suitable for electrical equipment, since they can prevent damage not only from heat but also from unwanted transmissions of electricity that might lead to short-circuits, performance downgrade or fire risks. They can be applied on horizontal as well as vertical surfaces, and have an excellent resistance to physical compression and expansion efforts (up to 50 percent of their original shape).

Typical application areas

They can be applied in construction projects including assembly and sealing of glass, perimeter sealing of windows, sealing of metal tanks, door frames, ceilings, etc. They are also used as sanitary sealants to seal Bathrooms, wetrooms, kitchens, water  tubs, swimming pools and where protection against fungi and bacteria is required. Silicone Sealants are used as structural glazing sealants for façades, for panels and partitions. Other applications include water and weather proofing materials, replacement of organic sealants and repair seals for home appliances. They are present in the automotive field as well (self-adhesive insulation mats, painting and lining films and exterior fitting adhesives), machinery (extremely strong adhesives that bond metals of different contours), furniture (double-sided carpet tapes and adhesives for office and domestic equipment), sanitary products (disposable baby diapers and sanitary napkins), healthcare (medical tapes, self-adhesive tapes ) and foodstuffs and paper.

How to use silicone sealants

Preparation and application of silicone sealants. Surface Preparation is important if a proper durable seal is required. Substrates need to be clean and dry and free from grease. A well prepared surface is essential to ensure good adhesion and a smooth bead. It is often highly recommended to use masking tape If the perfect finish is required. If the finished joint needs to be painted a pre test is advisable. Otherwise, coloured sealants can be a great alternative. Take the tube of silicone and cut the end from the tapered nozzle with a utility knife. If you want a bigger bead of silicone, cut further away from the end of the nozzle. The next step is to put the handle of the caulking gun all the way back and put the silicone in the gun, before turning the handle down and pushing it until it stops against the end of the tube. It is recommended to “push” the bead of silicone ahead of the nozzle to prevent air bubbles from forming under the sealant. Constant pressure is required to ensure an even flow of the silicone. Seal the entire length, and once you’re done, turn the handle up to release the pressure on the tube. To finish, remove the masking tape before the silicone starts to cure.

How to select the right sealant

There are a lot of special silicone sealants, you should choose the right sealant for the job: type of joint, substrate, stress of cured joint are all important considerations when choosing the ciorrect sealant. Silicone sealants are mainly grouped into the following categories:

  • Window and glazing Sealants
    Adheres strongly to glass, is very flexible and non-staining.
  • Bathroom and tile sealants
    offers excellent adhesion to most hard and glazed surfaces, built-in mould and mildew inhibitor. Use our Silicone Sanitary BPS in most cases.
  • Roof and gutter sealant
    doesn’t corrode metal surface or cause rusting. Ideal for wall systems, roofing and guttering.
  • Brick and concrete sealant
    permanent, flexible, waterproof seal.
  • Paintable sealant
    ideal for all house frames that require painting. Can also be used between paving slabs  to prevent weeds growing through.
  • Coloured sealant
    Silicone adhesives may be opaque, coloured or transparent. This visual flexibility is a major advantage for aesthetics and for safety. Watch out our new prime RAL colour sealant in common used RAL Colors.

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