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ROCKWOOL RockLap H&V Pipe Section

Rocklap Pipe Sections are strong lengths of pre-formed insulation covered with a one-piece, factory applied aluminium foil facing including an integral self-adhesive lap. Sections are snap fit and designed for thermal and acoustic insulation of heating, ventilation and air conditioning pipe work operating in the temperature range 0°C to 700°C.

Rockwool insulation products do not contain blowing agents with an ozone depletion potential (ODP) or global warming potential (GWP), are CFC-HCFC-HFC free and 97% recyclable. They will not react with metal components or cause loss of plasticiser from PVC cables and pipes.


  • Resilient, high performance barrier provided by one-piece, reinforced foil with integral lap.
  • Fast and simple installation reduces costs and time on site.
  • Installation may be carried out in winter conditions.
  • Tape requirement reduced.
  • Limited combustible product with surface finish also complying to Class 0.

General information

Uniclass 2015

Pr_80_77_76_54 Mineral wool pipe section insulationPrimary


S90/55 Insulation to pipelines

S90/570 Insulation to pipelines

T90/450 Insulation to pipelines to control heat loss

T90/58 Insulation to pipelines to control heat loss

Specification data - Mineral wool pipe section insulation

Product Reference

ROCKWOOL RockLap H&V Pipe Section


20 mm

25 mm

30 mm

35 mm

40 mm

45 mm

50 mm

55 mm

60 mm

65 mm

70 mm

75 mm

80 mm

90 mm

100 mm

Standard product features


1000 mm.

O/A Diameter:

17 mm – 610 mm.

Fire rating:

Non-combustible, achieving a classification of A1 in accordance with BS EN 13501-1.


Rockwool H&V Pipe Sections are CE marked in accordance with BS EN 14303. For more informationplease visit www.rockwool.co.uk/DOP

RockLap H&V Pipe Sections conform to BS 3958–4, ‘Bonded preformed stone wool pipe sections’ and canbe used to satisfy BS 5422: ‘Method for specifying thermal insulating materials’.

The product has been authorised for use in LUL surface and sub-surface premises when installed in accordance with manufacturers details – please refer to the LUL Approved Product Register website www.LU-apr.co.uk for specific details.


Nominal density not less than 120 kg/m³.

Thermal conductivity:

0.033 – 0.034 W/mK.

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