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A one-component, flexible bitumen sealant in solvent suitable for sealing bitumen sheaths, construction features on roofs and flat roofs, to make immediate seals on waterproofing layers and for application on substrates which are damp or not perfectly compact and clean. Ideal also for bonding bitumen tiles on sloping roofs. Application examples include:
- Localised seals on old bitumen membranes
- Overlaps on, and fillets in, bitumen membranes
- Sealing air vents
- Immediate seals in gaps between construction features on roofs and flat roofs, such as:
- Flues, skylights, aerials, guttering
- Collars around through pipe-work, Bonding bitumen tiles on roofs and flat roofs
- For professional use only
Mapeflex Blackfill is a one-component sealant made from bitumen and polymers in solvent, characterised by its soft consistency which makes it easy to extrude and shape.
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Features & Benefits
- May be used for filling joints, cracks and gaps of any size as, once hardened, it forms a plastic mass which is easily deformable
- The bead of Mapeflex Blackfill may be exposed to rain immediately after application, the product is not prone to leaching and does not dissolve in water
- Also bonds to most substrates such as cementitious materials, wood, bricks, metals and many varieties of plastics
- High bond and flexibility - bond is possible also in case of damp or wet substrate at the moment of application
- Does not run or drip even when applied in wide sloping or vertical joints
- However, because of its bituminous nature, it may soften and become more sticky on the surface if the surrounding temperature is high
- Supplied ready-to-use and is available in handy 300ml cartridges, suitable for use with traditional silicone extrusion guns from the Mapei Gun range
Recommendations & Limitations
- Carefully evaluate application on dusty, crumbly, damp or wet surfaces
- Do not use on surfaces with traces of oil, grease or stripping compound
- Do not use Mapeflex Blackfill at temperatures lower than 5°C
- Not suitable for compressive stress, tensile stress or continuous or snap shear stresses
- Not suitable for bonding polyurethane and polystyrene insulating panels or materials which are not compatible with solvent
Application & Preparation
Please refer to the data sheets in the tab above for further information.
Data sheet
- Manufacturer
- Mapei
- For Use By
- Professional Use
- For Use On
- Bituminous Surfaces
- Single, Two or Three Pack
- Single
- Pack Size
- 300ml
- Coverage
- One Mapeflex Blackfill cartridge is sufficient to �ll 3 metres of joint with a 10x10 mm section
- Max. Application Temperature
- 35°C
- Min. Application Temperature
- 5°C
- UN Number
- UN1133
- Suitable For Use On
- Flat Roofs
- Suitable For Use On
- Bituminous Surfaces
- Manufacturer
- Mapei
- Product Usage Type
- Sealant
- Product Range
- Mapeflex
- Colour Family
- Black
Questions
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IMPORTANT SHIPPING & DELIVERY INFORMATION
Mapei Mapeflex Blackfill 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