22mm is the second most common pipe size in UK plumbing, used for central heating mains, hot water cylinders, boiler connections, and larger domestic supply pipes. Correct insulation of 22mm pipes is essential for energy efficiency and frost protection.
Common applications for 22mm pipe insulation
22mm pipes are found in central heating flow and return mains, hot water cylinder connections, boiler primary circuits, and commercial cold water supplies. In commercial and light industrial settings, 22mm pipework often runs through unheated plant rooms and roof spaces where insulation is critical.
Wall thickness guide for 22mm pipe insulation
For 22mm hot water pipes in heated spaces, 9mm wall thickness is the minimum recommended. For pipes in unheated areas, 19mm or 25mm wall thickness is advisable. For compliance with BS 5422 (the standard for pipe insulation in the UK), check the specific thermal conductivity of your chosen material against the required performance level.
Best materials for 22mm pipe insulation
Armaflex pipe insulation is ideal for 22mm cold water and chilled water pipes where condensation control is critical. Kingspan Kooltherm pipe insulation is the top performer for heating pipes where space is limited. Rockwool pipe insulation is the preferred choice for fire-rated applications and high-temperature pipework. Foam pipe insulation suits standard domestic central heating applications.
Shop 22mm pipe insulation
Browse our full range of 22mm pipe insulation or explore all sizes in our pipe insulation by pipe size collection. Call 0161 775 1190 for expert advice.
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