Home > Water > Hot Water Jackets & Pipe Lagging

Hot Water Jackets & Pipe Lagging

By: Scott McBride - Updated: 27 Dec 2012 | comments*Discuss
 
Hot Water Tank Pipe Insulation Heat

Hot water tank and pipe insulation keeps water hotter for longer by reducing the amount of heat that escapes. This leads to cheaper energy bills and reduces emissions of carbon dioxide, a greenhouse gas that is harmful to the environment.

Insulating pipes and a hot water tank is relatively straightforward and can cut heat loss by up to 75 per cent. Even if a tank already has a jacket, it is worth checking that it is at least 75 millimetres thick. If not, it is probably a good idea to invest in a new one.

Fitting a hot water jacket is a simple job that most people will be able to take on themselves. It should only cost about £12 to buy one and in the first year it will knock £20 off energy bills and cut carbon dioxide emissions by 160 kilograms.

Most jackets come in a number of segments held together by a cord at the top and belts that go around the tank. Make sure the tank is measured accurately before purchasing a jacket. They come in three standard sizes - 92 centimetres by 46, 107x46 and 122x46 - and new jackets should be at least eight centimetres thick. Turn off the heating and allow the tank and pipes to cool before carrying out any work.

Well-Dressed Tank

Tie the tops of the jacket segments tightly around the pipe at the top of the tank. Make sure the tank is completely covered, with thermostats, pipes and immersion heads in the gaps between the segments. Secure the jacket by pulling the belts, but do not compress the insulation too much. Where possible, let segments overlap slightly to prevent heat loss.

It is fairly easy to fit pipe insulation too, especially if the pipes are easily accessible. Professional help may be needed to fit insulation to harder-to-reach pipework, but materials should only cost around £10 and will pay for themselves within the first year, reducing carbon dioxide emissions by 70 kilograms in the process.

There is no real need to insulate pipes within the living area, but it is worth insulating pipes between the boiler and the hot water tank, at least a metre of the pipe leading from the tank and any pipes in the loft. Any old or damaged insulation should be removed before starting.

Keep Wrapped Up

Types of pipe insulation can vary, but choose a lagging with a minimum thickness of 20 millimetres. The most convenient lagging to fit comes in pre-formed foam cylinders, which split along their length and easily slip over the pipe. Then just tape the splits and join sections.

Some pipe insulation systems use purpose-made clips and it is possible to buy pre-cut packs to use around valves. Felt can be used as an alternative, as long as it is closely wrapped to the pipe until it reaches the required thickness. Avoid leaving gaps where pipes are fixed to joists in the loft or pass through walls, and be particularly diligent at junctions and bends. Cold water pipes in the loft or other cold parts of the house should be insulated too.

You might also like...
Share Your Story, Join the Discussion or Seek Advice..
Why not be the first to leave a comment for discussion, ask for advice or share your story...

If you'd like to ask a question one of our experts (workload permitting) or a helpful reader hopefully can help you... We also love comments and interesting stories

Title:
(never shown)
Firstname:
(never shown)
Surname:
(never shown)
Email:
(never shown)
Nickname:
(shown)
Comment:
Validate:
Enter word:
Topics
Latest Comments
  • Dudz
    Re: Grants Available For Your Business
    I run a small social club, non profit making run by volunteers. The Building consists of two bar areas back to back and a…
    9 August 2022
  • Char K
    Re: New Build Grants and Funds
    Hi there, We have recently bought a house that needs a complete update. We have our plans approved to extend and renovate fully and…
    29 July 2022
  • Spence
    Re: New Build Grants and Funds
    Hi We have class q planning to convert a barn into a dwelling in the countryside in Devon, are they any grants available to us???
    13 June 2022
  • Doug
    Re: New Build Grants and Funds
    Please contact me asap
    4 June 2022
  • Franco
    Re: New Build Grants and Funds
    I am about to develop a brownfield site into 11 dwellings and wonder what grants might be available to assist me in reducing the…
    6 May 2022
  • PP PP PP PP PP PP PP
    Re: Eco-School Grants and Funds
    PP PP PP PP PP PP PP PP PP PP PP PP PP PP PP PP PP PP PP PP PP PP PP PP PP PP PP PP PP PP PP PP PP PP PP PP PP PP PP PP PP PP PP PP…
    28 March 2022
  • IXL IS SHIT
    Re: Eco-School Grants and Funds
    This app is bullshi* and the cun* that made this should die This is absolute bullshi* and the retar* that made this crap can go to…
    27 March 2022
  • Rossco
    Re: New Build Grants and Funds
    Hi iam hoping to be granted planning permission for a self build in November. The plot will be in a 5 acre plot on the outside our…
    2 October 2021
  • AMS7
    Re: Grants Available For Your Business
    My company currently operates from a small workshop space with corrugated roof and no ceiling, looking at foam insulation…
    6 September 2021
  • sludgebuster
    Re: Are There Any Grants for Water Treatment Systems?
    I live in a barn that was once part of a farm and found out yesterday that our outlet for drainage (we…
    6 September 2021