Cullen Technical Guide 2024

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HV–GR Hi–Vis Gripper

The Hi–Vis Gripper is a build–in detail for I–joists into masonry providing an air–tight seal at joist end. The Hi–Vis Gripper can be used on both external and party walls. Features & Benefits — Range of striking colours and unique design enables high visibility for post installation inspection — Bend and push fit with no mortar to front face speeds up install — Easy to install – no nailing required or need to trim joists to fit, saving time on site — Mastic not required to seal I–Joist perimeter, reducing site costs — Suitable for joists with either 90 or 100mm bearing without protruding into cavity — A major contribution to compliance with air leakage

Patent Number GB2511155

HV–GR–1 38 – 53MM WIDE

Build–in Detail Advantages (Requiring external mortar sealing only) — In line with existing building practice — Easy access — Quick and effective — Visual quality check from outside

HV–GR–2 58 – 72MM WIDE

Approvals — Meets NHBC technical requirements — Part E: Compliant with the requirements of Appendix A of the Robust Details Part E Handbook — Assessed to BS ISO–TR12470:1998 for 60 minute fire requirements

Material Specification High density Polyethylene

HV–GR–3 89 – 97MM WIDE

Additional parallel and perpendicular restraint may be required. Please refer to pages 128 – 129 for further guidance on built in restraint.

Available Sizes

Joist Width (mm)

Flange Depth (mm)

Joist Depth (mm)

Joist Manufacturer

38 – 53

58 – 72

89 – 97

220 245 300 220 240 300 220 240 300 220 240 300

HV–GR–220–1 HV–GR–240–1 HV–GR–300–1

HV–GR–220–2 HV–GR–240–2 HV–GR–300–2

HV–GR–220–3 HV–GR–240–3 HV–GR–300–3

James Jones (JJI)

45

HV–GR–240–1 (36mm) HV-GR-240-1 (36mm) HV–GR–300–1 (36mm)

HV–GR–240–2 (36mm) HV-GR-240-2 (36mm) HV–GR–300–2 (36mm)

HV–GR–220–3 (39mm) HV–GR–240–3 (39mm) HV–GR–300–3 (39mm)

Metsawood (FJI)

36 & 39

HV–GR–220–1 HV–GR–240–1 HV–GR–300–1 HV–GR–220–1 HV–GR–240–1 HV–GR–300–1

HV–GR–220–2 HV–GR–240–2 HV–GR–300–2 HV–GR–220–2 HV–GR–240–2 HV–GR–300–2

HV–GR–220–3 HV–GR–240–3 HV–GR–300–3 HV–GR–220–3 HV–GR–240–3 HV–GR–300–3

Steico (SJI)

39

Masonite (H, HB, HI, HL, HM)

47

The latest most up to date version will always be online and not in print or in downloaded pdf.

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Technical support 01592 771132 / technical@itwcp.com / https://www.itwcp-offsite.co.uk

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