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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.
28
Technical support 01592 771132 / technical@itwcp.com / https://www.itwcp-offsite.co.uk
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