30 DAY


Cavity Width: 50mm Cavity - 2.4m Length (Pack 8)
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£91.24 inc VAT

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The ARC Contract-Closer closes the cavity around window and door openings. The rigid PVCu profile is insulated with extruded polystyrene insulation (XPS) offering excellent thermal properties.

Contract-Closer helps prevent moisture, mould and staining from around windows and doors.

  • Closes cavity around window and door reveals
  • Prevents cold bridging
  • Insulated with expanded polystyrene (XPS) as standard
  • For cavity widths from 50mm to 150mm
  • Single flange available for check reveal details
  • Supplied in 2.4m lengths

This product is sold in pack quantities, the pack sizes are on the product dropdown for easy selection.

ARC Contract-Closer is insulated with extruded polystyrene which conforms to BS EN 13164:2008 Thermal Insulation Products for Buildings, Factory Made Products of Extruded Polystyrene Foam (XPS).


Length supplied 2.4m
Insulation Extruded Polystyrene (XPS)
Thermal Conductivity 0.034W/mK

    Please click on the links below:

    ARC Contract Closer

    The ARC Contract-Closer is easily installed. Simply cut the jamb profile
    to the height of the window or door opening plus 75mm to allow the
    bottom edges to drop into the cavity below the sill. 

    Once the jamb sections are installed, measure the required width for the sill section and cut a length to butt tightly to the jamb sections. If a longer length than 2.4m is required, see below

    Option 1 (First Fix): As above and build in the jamb sections as the
    brickwork progresses using ARC Brick Ties* (1 every 225mm). Ties are
    not required on the sill section, simply hold in place with an adhesive
    or nail to block. *ARC Brick Ties are sold separately and can be purchased by clicking this link

    Option 2 (Second Fix): Cut sections to required size as above and
    simply push fit once the openings are formed. Sections can be
    secured by nailing to block or using a suitable adhesive.

    Jointing Method:

    Where a longer length than the supplied 2.4m is required, the following jointing
    method should be used. 

    Using an appropriate saw, remove 150mm of the
    plastic profile only, then push the exposed insulation into the next length of plastic

    ARC’s wealth of technical experience ensures that the best solution can be identified from their comprehensive range of products. All fire barriers and cavity closers are manufactured to NHBC requirements and hold LABC accreditation. Operating within an ISO 9001 Quality Management System and ISO 14001 Environmental Management System, all products are manufactured to the highest standards.

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