• Welcome to PlumbersForums.net - The international free plumbing advice forum. Professional plumbers sharing advice with fellow plumbers and DIY alike. Register for free today! - Checkout the Plumbing Advice forum and then our Plumbing Videos area which still needs populating.


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.

View More On Wikipedia.org
  1. T

    Mixer tap leaking from base of spout

    Hi, I am after a bit of advice on a leaking mixer tap in the kitchen. Water is leaking from the area highlighted and varies with the amount of water pressure when using the taps, that might seem obvious, but I am not DIY minded :). I have removed the mixer and replaced both O rings on the...
  2. L

    Camray 5 leaking oil from Burner Nozzle

    Camray 5 (90A) (20 year old) oil boiler, had a noisy fan on the boiler so investigated, just a bit of dirt in the casing however, having removed the burner unit I replaced the Burner Nozzle no problem, old was very dirty and sooty. Found the boiler wouldn't fire up. SO rather than than mess...
  3. P

    Brass "Faringdon" lockshield valves leaking

    I have just tried to balance my heating system (16 cast iron rads, 3 towel rails), all the lockshields were fully open. When I try to close them down, they all leak, from a dribble to a gush. When I say all, I tried 6 and then stopped. The system was installed 9 years ago. Despite extensive...
  4. M

    Help with leaking boiler flue?

    Hi, I've been having trouble with my boiler leaking for months. We thought we'd fixed it last winter as haven't had any trouble throughout the summer but in the last week or 2 it's leaked again, we had several people out to look at it but no one fixed it. Tonight we've had someone else look and...
  5. C

    Leaking Radiator tail pieces

    Hi Just fitted a new towel radiator in my en-suit. Unfortunately it's leaking from the tail piece you screw into the bottom of the rad. I wound round about 4 layers of PTFE tape too. I have since taken it off and wound round 8-9 layers and it screwed up nice and snug but still leaks from both...
  6. J

    Leaking compression joint with plastic pipe.

    Yes, it me again. I have a leaking compression joint that is connected to plastic pipe. I have now read elsewhere that it is not a good idea to connect plastic into compression joints. It DID have an insert in the plastic pipe. I decided to use plastic JG speedfit pipe in the compression...
  7. M

    Vaillant EcoFIT pure leaking water from behind condensation trap

    I have a Vaillant ecoFit pure 830 which developed the f.22 fault, the pressure had dropped to 0.2 bar, i refilled the system and away it went, i noticed yesterday that there was water on the floor below the boiler and noticed that water was leaking from a small hole located behind the...
  8. B

    Bristan mixer bar shower leaking from the temperature control

    I installed a Bristan mixer bar shower about two and-a-half-years ago. I have recently noticed that immediately after the shower has been used, it drips from where temperature control knob turns. I attach a photo. The temperature control is on the right-hand side. The drips last for about...
  9. K

    How to fix leaking tap

    Hello there. I wanted to ask more experienced users if there is any possibility of repairing the leaking tap like on the photo. The apartment is not mine and my landlord hasn't really wanted to fix it for over a year. The plumber sent by him said that he could not repair it and would have to...
  10. Jonnyboy1992


    Hi all, I have a problem. I have replaced the pan connector from the toilet to the waste pipe however it’s still leaking. I’ve added plumbers mait which still didn’t fix the leak. Is it possible to replace JUST the black seal in the 3rd photo attached with purple arrow? I can’t replace the...
  11. S

    Question about leaking toilet

    I noticed a leak in a toilet in a house I have recently moved into. One of our other toilets is the same but is not leaking from this same "fitting". I gave the leaky one a quick turn to tighten it and it seems to have stopped leaking. Should I have done this, and what is this fitting for...
  12. B

    URGENT Leaking PHE inlet block on Heatslave II 25/32

    Heatslave II 25/32 water leak from PHE Inlet block. When DHW PRV fitting was removed a white flat seal/washer was found in 3 pieces. This seal is not listed on any diagram. It sits ahead of the rubber o ring item 45 on drawing and has has the same ID and OD as the oring but is made from white...
  13. K

    Leaking 'stone resin' shower tray

  14. A

    Flexi hose leaking at fitting.

    Hi, the fitting on my flexi hose that goesto my cistern is leaking slightly. Has anyone got any advice? Thanks Andrew.
  15. A

    Can my leaking mixer tap be fixed?

    Hi all, our kitchen mixer tap is leaking from the base of the swan neck. I texted a plumber and he told me I new a new tap but I'd like to think there's hope as far as repairing it (it's less than 4 years old). I've tried to examine it myself (I'm just a homeowner) but I cannot see any of the...
  16. B

    This Oil Valve on floor near boiler started leaking?

    With nothing to do today I thought I would do a spring clean on my Grant Vortex 26-36KW model so turned off power, removed door, and then removed baffles gave them a scrub , hoovered out chamber BUT got a phone call while I was messing. After phone call noticed smell of kerosene, looked on...
  17. Be kind

    Should a weather collar be stuck to stop rain leaking in?

  18. C

    Roca In tank Meridian Toilet leaking into bowl

    Hello I've searched online and can't find the answer to this one. The toilet is a Roca 'In Tank Meridian' floor mounted one, which has been leaking for a while. A plumber from the water company came but wasn't able to fix as not a standard loo. Does anyone know if it is relatively easy to do...
  19. M

    water leaking in lounge

    Water leaking under skirting board in lounge between telephone point and radiator for 12 days
  20. C

    Dual flush toilet leaking

    Hi, I have a dual flush toilet that's leaking water from the cistern to the bowl. I've taken the flush system out cleaned the washer of gunk, cleaned the bottom of the tank and it's still leaking-in fact it was leaking more at 1st! I rotated the unit a little and it slowed down; I can't rotate...
Creating content since 2001. Untold Media is a Registered Trademark.