Hagmans

Takmassa

Bitumen-based, fiberglass-reinforced roofing compound for laying seamless waterproofing layers.

Additional information

Product information
  • Product description
    Asphalt-based cold-application mastic with reinforcing fibers. Used as a single application to extend the durability of roofing felt. The roofing mastic together with reinforcing mesh was used to build a new seamless waterproof layer.
  • Area of application
    For the renovation of cardboard and metal roofs.
Technical information
  • Binder

    Polymer-modified Bitumen

  • Density

    About 1.3 kg/l

  • Drying time

    At +15°C: Walkable within about 1 month.

  • Flammability

    Fire class 2 b.

  • Flash-point

    ~ 40°C

  • Material consumption

    Single coating Cardboard: approx. 1 m²/kg (Depending on surface texture and cardboard quality.) Metal sheet: approx. 1.25 m²/kg

  • Vapor diffusion (sd)

    The roof compound is diffusion-proof

  • Weight Solids

    77%

Application
  • Instructions for use

    Single ironing – Tin roof
    The roofing compound is normally applied with a roof brush
    combination with brush for edging.
    Material consumption 1.25 m²/kg.
    Single ironing – Cardboard roof
    The roofing material is usually spread with a roofing brush
    in the lengthwise direction of the cardboard and towards the overlap so
    that the joint is filled. Assignments should be terminated
    with a straight edge approx. 5 cm up. Keep in mind that
    long brush strokes provide a smoother surface. Use
    amount of material should be approx. 1 m²/kg, depending
    on surface structure and cardboard quality.
    Full reinforcement – Cardboard roof:
    The first layer is laid out in the same way as
    general ironing. The material consumption should be
    approx. 1 m²/kg, depending on the surface structure and
    cardboard quality. The roofing compound is applied at least equally
    as wide as the width of the reinforcement mat. It gets
    there are no "strips" without roofing material in the joint.
    The reinforcement is inserted and properly stretched
    that no creases occur. The reinforcement must always
    take place in the underlying paper
    longitudinal direction. The entire surface must be "ironed over"
    with the brush so that the reinforcement is pressed down
    the roof mass. There must be no air pockets.
    Finally, a comprehensive layer is laid
    with roofing material (approx. 0.7-0.8 m²/kg). The reinforcement
    overlap by 5 cm. The upper layer
    roofing material is spread with long brush strokes so that
    the surface will be as smooth as possible. At connections
    the reinforcement is placed a few cm so that
    the cardboard fold is reinforced and the risk of leakage
    is minimized. Hoods, booties and other details
    is completely ironed out or the roofing material is pulled up approx. 5
    cm and ends with a straight edge.

  • Pretreatment

    Metal Roof: Clean the roof of dirt and remove any old paint and rust by scraping or blasting. Prime rust-affected metal surfaces with Hagmans Metal Primer. Cracks and holes can be easily repaired with Hagmans Asphalt Putty or Hagmans Asphalt Adhesive. Larger repairs are reinforced with Hagmans Reinforcement Mat.
    Felt Roof: The substrate must be thoroughly cleaned and dry. Moss and algae must be removed. Blisters or similar defects in the felt should be adjusted so that the surface is smooth enough to achieve a good result. Remember to check and, if necessary, adjust any felt pockets that may occur at the upstands in the old roofing felt. Larger damages and cracks over beams are reinforced with Hagmans Reinforcement Mat. Movement cracks are bridged with a release strip of SBS mat.

  • After painting

    Color: Black (slate gray over time). The roof surface must be dry during the work. Rain immediately after the roof treatment has no effect on the roof compound's tightness. Only minor changes in the surface layer may occur. The roof should not be walked on before the roof compound has stabilized. This takes about 2 months for full reinforcement.

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