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A leak is a way (usually an opening) for fluid to escape a container or fluid-containing system, such as a tank or a ship's hull, through which the contents of the container can escape or outside matter can enter the container. Leaks are usually unintended and therefore undesired. The word leak usually refers to a gradual loss; a sudden loss is usually called a spill.
The matter leaking in or out can be gas, liquid, a highly viscous paste, or even a solid such as a powdered or granular solid or other solid particles.
Sometimes the word "leak" is used in a figurative sense. For example, in a news leak secret information becomes public.
According to ASTM D7053-17, water leakage is the passage of (liquid) water through a material or system designed to prevent passage of water.

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  1. B

    Glow Worm Flexicom 30cx Intermittent leak

    Hi Have a Glow worm Flexicom 30cx-Installed 2010 and regaularly serviced. Last service October 21. Works fine, with no issues. However it has started to leak-though never when the house. is occupied. Went to Scotland over hogmanay for a week and when we returned there had been a leak of...
  2. J

    Vado Elements basin mixer with no grub screw

    HI there I have a 10 year old Vado elements 3 hole basin mixer with quarter turn taps. One of the taps is leaking, but there doesn't seem to be a way to remove it because there is no grub screw or other obvious method. The mixer is tiled into place...
  3. P

    Just can't figure out the leak under my bathtub...

    Hey guys, My bathtub drain needs to be replaced again. The cross in the bottom wore out again and the pop up stopper has nothing to connect to. I've done this four or five times before. This last time though, no go. I've tried at least a dozen times. I get a slow drip out of the bottom of...
  4. P

    Leak from check valve

    Hi.. Flat upstairs had a leak over Christmas - They were on holiday and some damage was caused to my flat. The tenants above explained that the leak came from the valve below the main water supply handle, and that a plumber came only a month beforehand to fix this part, that then leaked again...
  5. C

    Is a leak sealer ever a suitable solution for a new system?

    I assume the answer is no, but if this fixes the issue I know it will be what my builders sub contractor plumber will do. Therefore, before he is allowed near the system I would like to either find the issue or eleimnate parts of the system that do nto have an issue. As you will note from my...
  6. P

    Do I have a water leak?

    Hi, My x0.0001 water meter needle moved very slightly over a 20 minute period. Stop clock not turned off. When I turned the stop clock off it did not move over the same.period. Does this mean water is escaping indoors? Or does it fluctuate a bit and is normal? No sign of leak or leak damage...
  7. fango7

    Leak from bathroom upstairs

    Hi all, have a leak in landing from upstairs bathroom. This only happens when sink taps are on, not shower or toilet . Think it is a boss connection between sink waste to soil pipe. And think this is happening in corner where toilet is and that is where sink and soil pipe connect Just want...
  8. S

    Does this work on leak in actual radiator

    Does this work on a leak in the actual radiator.
  9. K

    what kind of pipe is this - water leak

    Hi all hope you are all well . Is the pipe in the photos lead or steel ? I suspect its leaking further down (water) as there is a puddle and I could hear running water until i turn the water off in the street thanks!
  10. T

    Pulsar Thermostatic valve leak

    Hi I have a Pulsar underfloor heating manifold with a leaky thermostatic valve. Plumber has managed to stop leak by tightening nut but this is 2nd time it’s leaked through ceiling in few months so was hoping to renew. However plumber been unable source a replacement/ equivalent as I know Pulsar...
  11. aallgeyer

    Gas leak on non threaded side of flared propane fitting

    Hi there, I'm building a propane system inside a van and I used flared connections. I'm getting 2 leaks from the side of the nut where the copper tube comes out (not the threaded/flared side). What could be a reason for this? I assume I need to redo the flare... or is there something else I...
  12. H

    Who is liable for leak

    Weve had two radiators replaced and a couple of weeks later (once the heating had gone on )one of them leaked ruining the wood laminate flooring. The plumber came and repaired the leak and said the problem was the original type of joint that was there was not suitable and should never have been...
  13. B

    Dishwasher leak in base

    I have a dishwasher that has a leak into the base that's tripping the flood switch. I tip the water out and the dishwasher works fine. I do believe I tipped it after the last wash and nothing came out. But after a while later that day I tipped it and some water came out. I have opened up the...
  14. N

    Combi boiler flue leak

    Hello, I have a Vaillant Ecotec combi boiler. The flue pipe extension has started to leak at one of the joints. The internal plastic connection pipe appears to be intact. It still drips when there isn't a demand for the boiler. I've attached some pictures and moved the joint strap to see...
  15. J

    Leak or condensation

    So, just curious. Whilst replacing some worrying pipes within the partition wall at the rear of the shower enclosure, I discovered the following...There is a cold water pipe feeding the next door shower.(The showers are back to back) Part of it is a copper pipe into a compression fitting...
  16. I

    Baxi combi boiler water pump valve leak

    Recently the central heating pressure kept dropping in my baxi combi boiler, I topped it up yesterday evening and this morning in needed topping up again. I noticed a small leak from what appears to be a valve on top of the water pump. Looks like it's a screw and maybe if I tighten it it will...
  17. C

    Advice on bathroom leak fix

    Hi We recently moved into a property that is about 3yrs old. Ever since we have used the shower we have had a leak that is showing by the wetness on the carpet in the adjoining room. Having called in a plumber they have advised the water is coming through a gap where the tap is installed...
  18. C

    Water Meter Turning Constantly

    Hi, my sons water meter keeps turning whilst no water being used. Switching off internal stopcock stops the meter. But no sign of water internally. useage bill has doubled for last 6 month’s so a sizeable amount of water disappearing. Could this be a meter fault, bu5 why stop when stopcock...
  19. R

    Help with leak radiator

    Recently changed valve on radiator. Where the valve enters the bottom of the radiator its wrapped with ptfe but still has a small leak does this need time to set ? Is it normal for it to leak a little for a dsy or 2 afterwards the leak is slowing and is minor . Thanks in advance
  20. Know nothing

    Plumber needed to do leak detection

    I live in first floor flat. Flat below has a leak from ceiling. One plumber has fixed leaking trap beneath shower. Other plumber re-silconed shower trray. Leak persists. Plumber checked toilet cistern and bathroom. How can i find a plumber to do water pressure test on all my water sources to...
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