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sealant

Sealant is a substance used to block the passage of fluids through the surface or joints or openings in materials, a type of mechanical seal. In building construction sealant is sometimes synonymous with caulking and also serve the purposes of blocking dust, sound and heat transmission. Sealants may be weak or strong, flexible or rigid, permanent or temporary. Sealants are not adhesives but some have adhesive qualities and are called adhesive-sealants or structural sealants.

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  1. finchy01

    Sentinal leak sealer on pressurised systems

    Afternoon all, Short and to the point. Have any of you experianced any problems using the sentinal leak sealer on pressurised systems? Think the leaks underfloor so want to try this before getting thermal imaging guys in. Thanks.
  2. C

    Adding sealant to system

    Hello, I have recently installed a new boiler and my pressure is still dropping every few days. I've been told that its due to a leak somewhere in the pipework. I cant see any leaks on the radiators or valves, and the pipes are under concrete underground. I was going to add some Sentinel Leak...
  3. C

    condensation under the bath

    Cris
  4. Eyespy999

    Grab adhesive

    Hi, Planning to help a mate with a bath install I will be bonding the edge of the bath onto tiles as it was an old wet room, can anyone recommend an adhesive that will keep the bath stuck for good?! Any help appreciated, regards
  5. L

    Wall flush button gone through the wall- please help!

    My toilet is attached to the wall by sealant, with the cistern within the wall. The flush is a push button that is on the wall. When i've flushed the toilet the button pushed right through and has has disappeared down into the wall! I cant feel it when i poke my fingers through. Like i say the...
  6. U

    Push button flush help please

    My toilet is attached to the wall by sealant, with the cistern within the wall. The flush is a push button that is on the wall. When i've flushed the toilet the button pushed right through and has has disappeared down into the wall! I cant feel it when i poke my fingers through. Like i say the...
  7. J

    Boiler internal leak sealant 5 days to set? Help needed!

    We have a boiler loosing pressure and British gas came to look at it. They put some kind of sealant in and said we had to have the heating on full wack for 5 days. This seems a bit ridiculous, expensive and very hot. Is this really necessary? Would 12 hours or a day do? Thanks Joshua...
  8. D

    Leaking belfast sink waste

    As the title says. I've installed a belfast sink over the weekend and the waste just keeps leaking. Firstly I put plumbers mate under the waste and tightened the plastic lock nut. Water is finding its way under the chrome waste (85mm in diameter) and trickles down the thread. After speaking to a...
  9. W

    Wear gas mask to remove silicone sealant?

    I heard this guy https://en.wikipedia.org/wiki/Karl_Kruszelnicki On the radio say he had a friend who was killed by the fungus that grows on silicone sealant. He does shows where he will try to answer any science question put to him on any subject. He knows his stuff. He didn't elaborate...
  10. T

    Sealant application course

    Does anyone know of a course on sealant application. Not interested in a nvq just want to tidy up my silicone work as its far from the best lol
  11. R

    Bathroom waste - unsure of where to put sealant?

    Hi, I am new to the forum and wondered if anyone had any advice on how to seal my new bath trap to the bath. I'm a keen DIY'er but have attended a few plumbing courses, but I have to admit I am scratching my head a bit on where to put the sealant. Its a Duravit bath and waste. There...
  12. J

    Paint on Silicant Sealant for Shower Enclosures

    Hi, i've got a minor leak somewhere in my shower - it's a pain in the backside but i can't seem to find the offending bit of grout... i've been online and found products such as Crommelin Water Based sealer and a similar product called Shower Plug - you simply "paint" a few coats over your...
  13. J

    sealant query

    I have just had new central heating put in, and I had some gaps around the copper pipes where they go up into the attic, they were only small gaps, but I sealed them with all purpose white sealant, the water proof and mould proof type. Im a bit worried now, that I may have used the wrong thing...
  14. M

    Easy boss stack connector

    Hi, I've recently bought and fitted an 'easy boss tee connector' to plumb in a 32mm pipe into the vertical soil stack. I've fitted it and it doesn't leak ,but I've found that despite having a massive plastic nut to tighten the device up to the stack , it keeps loosening by itself if you...
  15. J

    Larger thread sealant

    Hi all Been using hemp and linseed based sealant on anything over 1 1/4" as I was trained, but keen to see if there are any decent alternatives. Surely there must be a easier option out not, feed up of the horses hair getting tangled up in my van. Any suggestions? Thanks
  16. R

    Leak sealant

    Hi all I know this isn't ideal but what is the best leak additive you can get I've got a job where the pressure is dropping I've checked the boiler and it must be a leak the problem is its a bungalow all lamenated floor and only about a foot underneath so I carnt get under so I need to try this...
  17. A

    flue seal leaking water

    we have a High level flue outlet kit fitted to the boiler ideal logic combi plus i have noticed water dripping from the internal flue on to the ground where the internal pipe connects to the flue elbow/air terminal, upon closer inspection it seems to be coming from the seal where the internal...
  18. L

    Non setting sealant

    Looking to find something which also goes by the name of donkey d*ck - no its not a film and no Im not interested in animals ;-)
  19. S

    Outside Tap leak .. solder gone

    Hi All, My outside garden tap is leaking bigtime .. there is a small hole near the soldering at the elbow. How can I fix this please? I do not have any soldering kit. See attached pic .. (not the actual pic .. but taken from this .. just to show where exactly the problem is). Thanks in...
  20. H

    loctite 577 help on its use

    hello chaps , i am a newbie on here so hello to all. i have a question regarding loctite 577 thread sealant . i have a shower repair to do .The shower unions go in to some extentions then into a backplate elbow.The extentions and the unions have been put together with ptf tape and are...

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