Heat has a habit of escaping when you least expect it. In fact, the Energy Saving Trust estimates that improving insulation can cut unwanted heat loss by up to 25%, helping households lower energy use while keeping living spaces more comfortable. Pipework often gets overlooked, yet a few metres of exposed plumbing can quietly waste warmth every single day.
That is why fitting 22mm pipe lagging deserves a place on any home improvement checklist. The job is straightforward, takes very little time and continues to pay off long after the installation is finished. Whether you are updating an older heating system or working on a new property, good insulation helps hot water stay hotter and protects pipes when temperatures drop.
Buy Insulation supplies a wide selection of insulation products, including pipe lagging, PIR boards and made-to-measure solutions for projects where standard sizes simply are not enough.
Why does 22mm pipe lagging make such a difference?
Every time hot water travels through an uninsulated pipe, heat escapes into the surrounding air. It happens in lofts, garages, airing cupboards and under floors, places where that warmth does little good.
Adding 22mm pipe lagging creates a barrier that slows heat loss. Water reaches taps and radiators at a more consistent temperature, which means the heating system spends less time replacing lost energy. Over months and years, that small improvement adds up. Homes with visible pipework usually see the biggest benefit, especially during the colder part of the year.
Get everything ready before you begin
A little preparation saves a lot of frustration. Walk around the property and measure every section of pipe that needs covering. Look out for valves, elbows and awkward corners because these areas often need trimmed pieces rather than full lengths.
If your plumbing includes smaller branches feeding sinks or radiators, keep 15mm pipe insulation nearby instead of trying to stretch larger lagging over a narrower pipe. A proper fit always performs better and looks much tidier.
Measure first, cut once
Grab a tape measure and note the length of every pipe run. Adding a few extra centimetres is never a bad idea. Small mistakes happen, and having spare material on hand keeps the job moving instead of sending you back for another purchase. Straight cuts also make a noticeable difference. Clean edges sit together neatly and leave fewer gaps where heat can escape.
Fit the lagging without forcing it
Most modern lagging comes with a ready-made slit along one side. Open it gently and press it over the pipe until it closes naturally. Avoid squeezing the material too tightly. Insulation works because it traps tiny pockets of air, and crushing it reduces that benefit. When you reach smaller sections of plumbing, swap over to 15mm pipe insulation so every pipe is covered properly instead of making one size fit all.
Seal the joins
A surprising amount of heat can escape through tiny openings. Use insulation tape or suitable clips to secure each join, paying extra attention to bends and connections. The finished result should feel continuous from one end of the pipe to the other, with no loose sections hanging away from the surface.
Can pipe lagging be used with wall insulation?
Absolutely. Many house owners enhance the efficiency of their home as well as combine rigid PIR boards with insulated pipework. By fitting Celotex Insulation boards in walls, service spaces or loft conversions, heat stays within the walls and a second layer is put in place.
When space is at a premium, Celotex Insulation board is a practical choice due to its high thermal properties and low thickness. Pipe lagging and PIR boards will be used in combination, rather than each insulation separately.
Conclusion
There are few home improvements that offer such a quick payback. Pipes with better insulation lose less heat, remain protected from cold weather and will make heating systems more efficient without requiring the homeowner to do anything. For a renovation project or just to replace old insulation, Buy Insulation ensures the task is easy and makes your home warmer and more energy efficient.