Mira Supersil Extra Flexible Silicone - 121 - Grey - 300ml

Mira Supersil Extra Flexible Silicone - 121 - Grey - 300ml

£3.60 inc.VAT (£3.00 ex.VAT)
In Stock (68)

Extra flexible silicone for the reinforcement of deformation joints in tiling both in dry and wet rooms. Suitable for ceramic tiles, marble and natural stone, glass, enamel, sanitary ware etc.

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Extra flexible silicone mass for the reinforcement of deformation joints in tiling both in dry and wet rooms.


  • Withstands constant water stress
  • Does not emit oil or change the colour of the tiles
  • Mold and bacteria repellent
  • Neutral, non-acidic

Supersil silicone is suitable for materials like ceramic tiles, marble and natural stone as well as glass, enamel and sanitary ware etc.

Supersil silicone is supplied in many lightfast colours. supersil silicone is supplied in 300ml plastic cartridge.

Product description
Ready-mixed silicone sealant forms an elastic joint capable of movements up to 25%.

Application areas
For sealing and grouting of expansion joints when installing ceramic tiles, sanitary items and piping on floor and wall. This silicone sealant is particularly suitable for calcareous natural stone (marble) as it gives no risk of corrosion and discolouring.

Withstands constant water exposure but must not be used in aquarium. do not paint over.
Supersil contains fungicide reducing risk of bacterial growth, fungus and mold on joints having the ability to resist commonly used detergents, supersil silicone is UV resistant.

Silicone is acid free and therefore not damaging to coating on mirrors.

Type of substrate
Apply supersil silicone on ceramic tiles, natural stone and metal, glass, enamel etc.

Pre-treatment of substrate
All surface must be clean, dry and free of grease dust, etc. We recommend using masking tape wich is removed immediately after grouting.

Apply silicone sealant by hand or silicone gun on clean joints. Press silicone sealant carefully into place and smoothened with a soapy water saturated, fine-grained joint stick immediately after application.

Supersil sets 1-2 mm per day at 23oC and 50% relative humidity. In confined rooms or under conditions with humidity below 40% skin formation and setting time appear significantly quicker. Prolonged setting time can lead to impaired adhesion and increases risk of the joint surfaces being polluted.

To achieve maximal joint movement joint width shall be min. 4 mm and max. 25 mm. Joint thickness is usually half size of joint width, however, min. 5 mm and max. 10 mm.
After setting supersil withstands temperature from -40 to +120oC.

Working environment
Product is not subject to REACH registration. Reference to product safety data sheet.

Storage and transportation
Transport and store dry. Product will maintain technical specifications minimum 12 months after production data in unopened packaging. Can be used hereafter, technical properties may however, change; setting time may eg. be extended.

Coverage: Average: 6-10 m /cartridge
Joint Width: 2-25 mm
Working temperature: 5-25°C
Working Time: 10-20 min
Hardening: Dry to touch: 10-20 min

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