Top Hats & Flexible Top Hats

Top hats for sealing to a gas barrier and at the intersection of pipe projections, available in sizes from 55mm to 160mm. Compliant with Building Regulation Approved Documents C1 and C2.

Common applications are for soil and service pipes passing vertically via a gas barrier or membrane to maintain a continuous seal. Top hats are suitable for installation at ceiling level for pipe protrusions to assist in reducing air leakage. All jubilee clips are supplied separate to top hat units.

Flexible top hats for sealing to a gas barrier and at the intersection of pipe projections. Designed to be flexible enough to fit around difficult applications and are ideal for use in tight situations where a pipe is close to a wall. Compliant with Building Regulation Approved Documents C1 and C2.

Uses:

  • In areas outlined in BRE document ‘Radon’ guidance on protective measures in new dwellings
  • When gas protection is required across the footprint of the building
  • Crossing cavity wall constructions to maintain gas barrier integrity
  • Forming internal perimeter trays to allow membranes continuity
  • Collars for service pipe protrusions
  • Following a risk assessment where the requirement is for a good gas protection measure against Radon, Co2, Methane and Hydrocarbon
  • To be designed and installed in a continuous system around the whole building perimeter

Product Information

Top Hats & Flexible Top Hats

DescriptionProduct Code
Top hat pipe collar 55mmTH055
Top hat pipe collar 82mmTH082
Top hat pipe collar 110mmTH110
Top hat pipe collar 135mmTH135
Top hat pipe collar 160mmTH160
Jubilee clips size 5, 6, or 7JCLIP 5, 6, or 7
Gastite sealing tape 10m x 100mmGTAPE01
Girth tape 50m x 72 mmGTAPE02

Preformed mouldings eliminate the need for site fabrication to prevent errors through poor workmanship.

Easy to handle, flexible, tough, durable and puncture resistant.

Can be used for multi-storey or high-loading applications – will not extrude under high loads up to the point of compression failure of wall.

Wide range of standard components with special tailor made accessories also available.
Fully itemised scheduling service.

  • Manufactured to BS EN ISO 9001 and BS EN ISO 14001
  • Satisfies all NHBC requirements
  • Meets BRE requirements
  • Complies with Building Regulation Approved Documents C1 and C2
  • Meets all relevant British Standards

Formed in 2mm medium density polyethylene and/or polypropylene.

Available in black only.

Units will require tape and seal – tape sold seperately. Use GTAPE01 to make the seal between joint surfaces. Use GTAPE02 to seal upper surface to minimise lap lifting if used in concrete floors.

Top hat pipe collars
(TH055, TH082, TH110, TH135, TH160)

Top hat pipe collars are available in sizes from 55mm to 160mm. A standard range of preformed pipe sleeves that are designed to have sealing tape applied to the unit base to offer a unit for sealing to a gas barrier and at the intersection of pipe projections. Common applications are for soil / service pipes passing vertically via a gas barrier or membrane to maintain a continuous seal. Top hats are suitable for installation at ceiling level for pipe protrusions to assist in reducing air leakage. All jubilee clips are supplied separate to top hat units.

Jubilee clips size 5 for TH055
Jubilee clips size 6 for TH110
Jubilee clips size 7 for TH160.

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