Home > Companies > Xtratherm UK Ltd > Thin-R XT/Close-R

Fully insulated cavity closers offering a cost effective solution for builders and specifiers for the closing of cavities around window and door openings, preventing cold bridging, damp penetration, air infiltration and condensation.

The Close-R range is used to close cavities and is suited to all types of windows and doors and is available in sizes to fit cavity widths from 100–150 mm, with checked detail to suit brick or drylined specifications and flanged detail to suit block outer facings. (Flanged detailing requires precise construction tolerances.)

Standard product features


To BS EN 13165.

NBS Specification

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This product is associated with the following NBS clauses:

Product specification

An important note about specifying



Xtratherm UK Ltd


+44 (0)371 2221033

Product reference

Thin-R XT/Close-R

Manufacturer details

Park Road,
Holmewood Enterprise Park,
Derbyshire, S42 5UY
Tel +44 (0)371 2221033
Fax +44 (0)371 2221044
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