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A solvent-free, neutral silicone sealant with a low modulus of elasticity, specific for sealing fillet joints between tinwork accessories and layers of waterproofing material. It is particularly recommended for metals normally used on roofs and flat roofs such as steel, zinc and pre-painted sheet, anodised and pre-painted aluminium and copper.
Its chemical characteristics also make it perfectly suitable for absorbent materials such as concrete, cellular concrete, brickwork, varnished and lacquered wood and various compact, non-absorbent materials such as glass, ceramic, clinker, enamelled surfaces, water and solvent-based paint and plastics such as polycarbonate: it is always recommended carrying out a preliminary test.
Also suitable for sealing fillet joints in tinwork accessories such as:
- Downpipes, guttering, flashing
- Gables, metal flat roofs, corner guards
- Special shaped pieces, heads of rivets and fasteners
- For professional use only
Mapesil BM is a one-component, solvent-free odourless silicone sealant with neutral cross-linking, prepared as a thixotropic paste. It is easily applied both horizontal and vertical surfaces, cross-linking at ambient temperatures to form a flexible product.
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Features & Benefits
- Seals formed with Mapesil BM remain unchanged even after many years of exposure to climatic extremes, industrial pollution, sudden temperature change and water
- Remains flexible at a temperatures from -40°C to 150°C
- Resistance of Mapesil BM to chemical agents is generally good; however, due to the numerous products and working conditions to which Mapesil BM can be applied, it is always advisable to make a preliminary test in cases of doubt
- Adheres perfectly to most surfaces used in building without needing a primer
- In cases of prolonged immersion Primer FD must be applied first. Apply Primer P first on different and compatible plastic materials
- If in doubt, refer to our Technical Services Department or make a preliminary test
- Complies with EN 15651-1norm (“Sealants for internal and external façade elements”) with performance rating F-EXT-INT-CC, with EN 15651-2 norm (“Sealants for glazing applications, intended for use in cold climates”) type G-CC and EN 15651-4 norm (“Sealants for pedestrian walkaways”) with performance rating PW-EXT-INT-CC
Recommendations & Limitations
- Do not apply Mapesil BM on rubber, highly plasticised plastic materials or bituminous surfaces, because oils and plasticisers could migrate to the surface compromising the adhesion and penetrating into the sealant altering its colour and resistance
- For sealing floors use Mapeflex E-PU 21 SL, Mapeflex PU 45 FT or Mapesil AC Use Mapesil LM for sealing expansion joints between natural stones (marbles, granites, agglomerates, etc.)
Application & Preparation
Please refer to the data sheets in the tab above for further information.
Data sheet
- Manufacturer
- Mapei
- For Use On
- Plastic
Wood
Concrete
Brick
Steel
Zinc
Aluminium
Copper - Single, Two or Three Pack
- Single
- Pack Size
- 310ml
- Max. Application Temperature
- 40°C
- Min. Application Temperature
- 5°C
- Suitable For Use On
- Metal
- Suitable For Use On
- Concrete
- Suitable For Use On
- Plastic
- Suitable For Use On
- Brick
- Suitable For Use On
- Wood
- Suitable For Use On
- Zinc
- Suitable For Use On
- Aluminium
- Suitable For Use On
- Steel
- Suitable For Use On
- Glass
- Suitable For Use On
- Copper
- Suitable For Use On
- Ceramics
- Manufacturer
- Mapei
- Product Usage Type
- Sealant
- Product Range
- Mapesil
- Colour Family
- Grey
- Colour Family
- Clear
Questions
Question about the product
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IMPORTANT SHIPPING & DELIVERY INFORMATION
Mapei Mapesil BM is only available with the shipping and delivery timescales listed below - please do not contact our Customer Support Team with enquiries about alternative or earlier shipping and delivery times.
Saturdays and Sundays, as well as Bank Holidays, are not classed as working days.
Orders placed after the cut-off for this product will not be processed for earliest dispatch until 9am the next working day.
All delivery costs below are excluding VAT