Thermal Cavity Closers

G247-G247M

The G247M Multi Width Cavity Closer suits standard cavity widths between 50mm and 100mm in a single product, the grooved back profile of the insulation can be cut to the desired width.

  • Description & Key Features

    Product Description

    The G247 range is a single extrusion profile closer which is available to suit a range of cavity widths, including the G247M multi width profiles which are designed to enable the stockist to hold one size which can be easily trimmed to suit a variety of cavity width requirements.

    The closers provide an economical solution to cold bridging problems, acting not only as a thermal break to the cavity but also as an effective vertical DPC barrier. The lightweight closers are available in sizes to suit most common cavity widths and are simple to install, requiring no special tools, the lengths can be easily cut with a hand saw.

    The G247M multi width closers suit standard cavity widths between 50-100mm and 100-150mm in a single product, the grooved back profile of the insulation can be cut to the desired width.

    The cavity closer is non-load bearing and should not be used as replacement for traditional methods of fixing window and door frames to the masonry.

    Key Features

    • Double flanged profile from a single extrusion
    • Insulation providing GWP rating of less than 5
    • Available in varying cavity widths
    • Multi Width versions available from 50-100mm and 100-150mm
  • Technical

    Fitting Requirements

    Brick up to sill height, cut and fit the sill closer. Cut the jamb lengths 75mm oversize and trim the flanges back to allow them to overlap the sill closer once fitted.

    Continue to brick up the wall, securing all pieces of the cavity closer by plugging and screwing through the larger flange into the internal leaf.

    Certifications

    Manthorpe Thermal Cavity Closers - BBA Certificate - 96-3226.pdf

    Regulations & Standards

    BS 5250:2011 Control of condensation in buildings.

    Approved Document L1 & L2:
    Conservation of fuel and power.

    NHBC Technical Guidance 6.7:
    Doors, Windows & Glazing

    BRE Digest Report 262: Thermal Insulation: Avoiding Risks.

    BRE Information Paper IP 1/06: Thermal Bridging at Junctions & Openings

  • Specifications

    Size Information

    Length 2.44m

    Multi Width versions available from 50-100mm and 100-150mm

    Material

    Extrusion: UPVC

    Insulation: Superplus Polystyrene

    Colour

    Extrusion: White

    Insulation: Black

    Quantity Information

    6 lengths per pack

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