Menu
Menu
Your Cart

125mm Kingspan Kooltherm Cavity Closer (pack of 10)

125mm Kingspan Kooltherm Cavity Closer (pack of 10)
125mm Kingspan Kooltherm Cavity Closer (pack of 10)
Guide Price
125mm Kingspan Kooltherm Cavity Closer (pack of 10)
125mm Kingspan Kooltherm Cavity Closer (pack of 10)
125mm Kingspan Kooltherm Cavity Closer (pack of 10)
Guide Price: £238.70 (£286.44 inc VAT)
To add to cart change quantity to minimum of 3. If you need less, ask for a price or add to a quote list.
  • Product Code: A1-2194
  • Delivery Time: 5 - 7 days
  • Brand: Kingspan (Tech. support: 01544388601)
  • Model: 125x2400mm
Our ratings on 28-08-2026:
Google My Business Reviews
4.8 out of 5

125mm Kingspan Kooltherm Cavity Closer (pack of 10)

Width: 125mm
Length: 2400mm
R-Value: 0.03m2K/W

125mm Kingspan Kooltherm Cavity Closer is a PVCU extrusion with a rigid thermoset insulation core, which provides a simple and efficient method of closing cavities around openings in cavity walls. It is suitable for use with timber, metal or PVC window frames and can also be supplied to order in curved sections. Its rigid thermoset insulation core prevents thermal bridging, and its PVCU Jsection forms a positive damp proof barrier and key for the direct application of plaster. It effectively prevents condensation and mould growth, frequently associated with traditional methods of closing cavities. Jointing clips extend the range further by allowing the Kingspan Kooltherm Cavity Closer sections to be joined to suit cavity widths of up to 300 mm. For use with masonry wall openings in England & Wales only.

CHARACTERISTICS
  • Maintains a continuous insulated cavity closer around window and door openings, 
  • Avoids the need for cut bricks, blocks or special reveal blocks, Avoids thermal bridging, condensation and mould growth,
  • Weather resistant, Can either be built in with frames or used to preform openings when frames are fitted later,
  • Unaffected by air infiltration,
  • Non-deleterious material,
  • Insulation core manufactured with a blowing agent that has zero ODP and low GWP
     
CERTIFICATION
Kingspan Cavity Closer is manufactured under a management system certified to BS / I.S. EN ISO 9001: 2015, BS / I.S. EN ISO 14001: 2015 and BS / I.S. OHSAS 18001: 2007;
Brand: Kingspan Model: 600mm x 1200mm - 0.72m2
Delivery Time: TBC
20mm Kingspan OPTIM‑R Vacuum Insulation Panel - OPTIM‑R Flooring System is an ultra‑thin, ultra‑high‑performance vacuum insulation flooring system designed for projects where achieving very low U‑values is essential but construction depth is severely limited. The OPTIM‑R Flooring System uses rigid v..
Brand: Kingspan Model: 600mm x 1000mm - 0.60m2
Delivery Time: TBC
20mm Kingspan AlphaCore Pure is a high‑performance, pure silica‑based insulation board designed for modern façade and wall systems where ultra‑thin build‑ups and enhanced fire performance are required. Its microporous silica core delivers excellent thermal efficiency with a declared thermal conducti..
80mm Thermawall TW55 PIR Insulation Board Kingspan 80mm Thermawall TW55 PIR Insulation Board Kingspan
Guide Price
Brand: Kingspan Model: 1200mm x 2400mm - 2.88m2
Delivery Time: 1 - 5 working days
80mm Kingspan Thermawall TW55 is a high-performance rigid insulation board designed specifically for use in wall applications, particularly in new build and refurbishment projects. Manufactured using a premium polyisocyanurate (PIR) core, this insulation board offers exceptional thermal performance,..
Guide Price: £63.99
£76.79 inc VAT
Single Board 82.5mm Kingspan Kooltherm K118 Insulated Plasterboard (70mm phenolic insulation and 12.5mm plasterboard) Single Board 82.5mm Kingspan Kooltherm K118 Insulated Plasterboard (70mm phenolic insulation and 12.5mm plasterboard)
Guide Price
Brand: Kingspan Model: 2400mm x 1200mm - 2.88m2
Delivery Time: 3 - 5 days
82.5mm Kingspan Kooltherm K118 Insulated Plasterboard is a premium performance, lower lambda internal wall insulation, with a fibre-free rigid thermoset phenolic core. It has a 12.5mm plasterboard bonded to its front surface and a composite foil based facing on its reverse surface. It is suitable fo..
Guide Price: £126.50
£151.80 inc VAT
Brand: Kingspan Model: N300R 50mm - 6.00m2
Delivery Time: 2 - 3 working days
50mm Kingspan Styrozone N300R XPS Board is an insulation for inverted roofs, basements, car park decks, and heavy-duty commercial, industrial and cold store flooring. They have high compressive strength, and a closed cell structure which resists the absorption of ground water and the passage of wate..
Brand: Kingspan Model: 1200mm x 1200mm - 1.44m2
Delivery Time: 3 - 4 days
60mm Kingspan Thermataper TT46 Board is a high-performance tapered PIR insulation board designed for flat roofs with mechanically fixed single-ply waterproofing. Thermataper TT46 is commonly used for flat roofs with mechanically fixed single-ply waterproofing. It offers effective thermal insulation,..
This product is listed in the following categories and systems (click to show).