Thermo-loc Multi Cavity Closer

• Provides an effective DPC and thermal barrier between frame, inner and outer wall leaf
• Thermal conductivity of 0.031W/mk
• Exceeds the minimum thermal resistance path of 0.45m2 K/W stipulated in accredited construction details
• Rigid profile extrusion allows second fix
• Durable and resistant to decay
• Simple on-site trimming to cope with ‘rogue’ cavity widths
• Global warming potential of less than 5
• Ozone depletion potential of zero

• BBA approved
• Manufactured to BS EN ISO 9001 and BS EN ISO 14001
• Complies with Building Regulation Approved Documents C, L1 & L2
• Satisfies BRE document ‘Thermal insulation: avoiding risks’
• Meets all relevant British Standards
• Satisfies NHBC standards

• Rigid profile extruded in UPVC.
• Expanded Polystyrene insulation 0.031W/mk.
• Multi 100mm & Multi 150mm cavities.
• 2.4m lengths.

F30 Accessories/sundry items for brick/block/stone walling window jambs and sills
Clause 180 | CAVITY CLOSURES FOR CLOSING AROUND WINDOW & DOOR OPENINGS

• To extend not less than 150mm beyond ends of lintels/bridgings.
• Manufacturer: Timloc Building Products, Ozone Park, Howden, East Yorks. DN14 7SD. T: 01405 765 567 W: www.timloc.co.uk
• Reference: eg. CC2.4PPS/Multi100 (Thermo-loc Multi, Expanded Polystyrene, 2.4m, multi cavity up to 100mm)

• BRE Document ‘Thermal insulation: avoiding risks’ stipulate “When a window or door frame is set back behind the inner face of a dense outer masonry leaf, it should overlap an insulated closer by a minimum of 30mm for BRE exposure zones Sheltered to Severe; but fully rebated for zones Very Severe”.
• With reference to insulation, the products in this range do not use, contain or produce Urea Formaldehyde, CFCs or indeed any of the so-called soft CFCs, i.e., HCFCs & HFAs. They have an ozone depletion potential of zero and global warming potential of less than 5 and complies with BS EN 13163.

• The accredited construction detail published by DCLG require a minimum overlap of 30mm between the window frame and cavity closer.
• Cut into required lengths allowing the jamb section to overlap the sill section by cutting away parts of the fixing flange and butt the underside of the lintel.
• For second fix applications, the cavity closer is pushed into the open cavity after building work is complete. The compressible nature of the exposed insulation material is used to create a friction fit in the cavity, alternatively the insulation can be trimmed to fit using a sharp knife.
• Fixing nails to the flanges are recommended to ensure a secure fit.

• Establish the cavity width and select the correct cavity closer width to ensure the cavity can be closed.
• In jamb and sill applications, first estimate the total length of cavity closer required, then order the correct number of individual 2.4 metre lengths so no joint pieces.