Rockwool Rocklap Pipe Insulation — Size & Application Guide
Rockwool Rocklap is the UK's standard specification for high-temperature pipework, steam systems and fire-rated applications. It is a foil-faced stone wool pipe section, A1 non-combustible (Euroclass A1), rated to 750°C continuous operating temperature — the only standard pipe insulation material suitable for steam pipework and high-temperature industrial applications.
Why Specify Rockwool Rocklap?
- A1 non-combustible — Euroclass A1, the highest fire classification available. Will not contribute to fire spread in any application
- 750°C continuous — suitable for steam pipework, high-temperature heating mains and industrial process pipework
- Dimensionally stable — mineral wool will not shrink, settle or degrade at high operating temperatures
- CIBSE and Part L compliant — meets insulation requirements for high-temperature commercial pipework under current UK building regulations
- Foil faced — reinforced aluminium foil facing, 1m sections with self-closing lap
Rockwool Rocklap by Pipe Size
- 15mm — 15mm guide
- 22mm — 22mm guide
- 28mm — 28mm guide
- 35mm — 35mm guide
- 42mm — 42mm guide
- 54mm — 54mm guide
- 76mm — 76mm guide
Rockwool Rocklap by Wall Thickness
- 25mm wall — commercial heating and fire-rated applications
- 30mm wall — high-temperature heating mains and steam pipework
- 40mm wall — large bore industrial and district heating
- 50mm wall — maximum thermal performance, steam and process pipework
Common Applications
- Steam pipework and high-temperature process pipework (up to 750°C)
- Commercial and district heating mains operating above 120°C
- Industrial plant room and boiler house pipework
- Fire-rated pipework penetrations and compartmentation
- Any application where non-combustible insulation is specified
Related Guides
- The Ultimate Guide to Pipe Lagging
- Pipe Insulation Wall Thickness Guide
- BS 5422 Pipe Insulation Standards & Thickness Tables Guide
- Armaflex vs Rockwool — Which Should You Choose?
- Explaining Fire Ratings of Insulation
- Fire Rated Insulation Types: BS 476 Class 0 vs Class 1 Explained
- Best Building Insulation Materials for Commercial Projects
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