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. Ebbrom

    Quarry tile sealant advice - made a mess

    Hello! We have quarry tiles which we used iron wax satin on. I did one coat. We then had some plaster come down when the builders fitted some spotlights and we couldn’t get it clean after three mops. I therefore tried the HG grout remover I had again which we used before the wax. This has left...
  2. D

    Cleaning / sealing slate

    Hi, New to the forum. Have a tiler coming in to do my floor tiles but don't think he's done a lot of slate. We are happy to seal prior to (and after) fitting. We're going to be using either Lithofin MN Stain Stop or Lithofin StainStop Plus depending on how the tiles look after we've applied a...
  3. D

    CT1 Adhesive & Sealant for tiling shower area?

    Has anyone ever used CTI for sticking tiles to a wall. I'm new to tiling and want to install a shower with metro tiles onto a skimmed wall. I did try Mapri Keraquick Wall & Floor Rapid-set tile adhesive, but my lack of skill and experience means that I'm making quite a mess. I'm thinking that I...
  4. L

    Grout or sealant and grout in the corners?

    I'm just grouting a new en suite and have left the corners open until I'm sure of the best way to do them. I'm going to presume I need to use a flexible sealant on the inside corners and where the tiles meet the tray, but, do you fill the gaps with grout first and lay a bead of sealant on top...
  5. B

    Sealant to match metro tile grout

    Hi. I have used the mapei flexible grey grout ( the one in the red bag). What mapei sealant would be a good vlose match to this grout
  6. U

    Cement floor adhesive sealant.

    I'm looking at using STS TG4 cement boards in our bathroom. My local stockist is out of stock of sealant (they offer Illsbruck SP540 rather than STS's own stuff so there must be loads of alternatives? I'm not looking to cut corners, just a suitable alternative - STS only sell theirs in boxes...
  7. S

    Refit Shower Enclosure Silicone Sealant Advice

    Hi All, we have recently had a new shower enclosure fitted and wanted to check whether the inside vertical profiles should be silicone sealed as a "belt and braces" approach to prevent leaks? The instructions only state to do the outside and the bottom of the door only: The fitter has stated...
  8. G

    Refurb Grout and Sealant

    Evening all! We recently had our bathroom renovated, the Plumber/Tiler we hired to do it was a fantastic bloke, but we did notice how the finish on the grout and sealant for the tiles was not to a high standard. He assured us that after a few showers the steam would get the messy edges to drop...
  9. T

    Tiling - mastic, sealant or caulk

    Total plumbing-tiling novice. Our bathroom has been tiled. What should we use to seal internal corners and where the tiles meet the ceiling - mastic, sealant or caulk? I'm confused about the difference and have had varying advice. Once it's sealed, can I cover the edges (ceiling, floor...
  10. S

    Internal shower and niche corners..Grout or sealant?

    What would you guys recommend to finish the internal corners on this niche? Grout or sealant? The niche is inside of a shower cubicle Already grouted the corner of the cubicle then thought maybe it should have been sealant instead. That can be corrected if need be but wanted to double before...
  11. L

    Low modulus silicone sealant for bathrooms

    Can anyone recc a low modulus silicone sealant for bathrooms? It seems that manufactures are reluctant to say what modulus their product is! Thanks
  12. H

    Grout or sealant

    Hi I am nearing end of my bathroom renovation and wanted to know what is best, before the guy applies the finishing touches tomorrow. Grout or sealant for these areas? Photo A - between tile and doorframe facing ( I would say grout?) Photo B - top right corner (I would say grout?) Photo C -...
  13. Kyle Knowles

    Outdoor Tiling | Tiling outdoors

    I gave a step to tile it's 6ft x 6ft with to steps up to the main platform it's brick build then backfilled with concrete would it be acceptable to use something like kerdi membrane to cover the whole thing or even the old homelux wetroom fabric or sold I just go ditra drain or similar? ? The...
  14. L

    help with siliconing a shower floor

    Hi guys my name is Lauren, I really need some hard to get advice and my tiling experience is limited. The floor in my grandmother's shower in an old second story bathroom is a bit flexible and the sealant has worn out around the shower floor on the inside. I'm hoping to seal that back up quickly...
  15. A

    Grout Question about matching a sealant to a grout - Topps Tiles Neutral Light

    Hello. I am new to all this so apologies if I have posted in the wrong area. My bathroom is being tiled and I found the perfect grout from Topps Tiles (Natural Light - Bal NL1) but my tiler has just told me they don't do a matching sealant. Does anyone know if there is a replica of this...
  16. B

    Dark grout, white sealant

    Hi, just had a tiler put some white metro tiles with grey grout in our first house. We are a disappointed with the white sealant - see photos. We appreciate that it may be tricky to do dark grout and white sealant. Is this the best we can hope for? Should we not have picked grey grout?
  17. A

    Mastic Sealant?

    Hi all, I wonder if someone could help answer this one please. The mastic looks like it’s starting to fail between the tiling and the ceiling the my shower, does this require sorting urgently? This area obviously doesn’t get wet but there is a lot of moisture in the room. (Sorry if a silly...
  18. L

    Which Tile Sealant to Use Fila or Lithofin?

    Hi, We're having some work done on the home and having some natural stone tiles fitted into our kitchen and orangery. The tiles that we will be using are natural honed quartzite/slate. However, I am unsure as to which brand of sealant would be best. The supplier of the tiles recommends that...
  19. N

    Techniques for applying sealant to 3 lines of a corner joint

    Hi, I would be interested in advice on how to apply sealant to corner joints effectively. Is there any way to do it without waiting for the vertical line to dry before applying the horizontal lines? Whatever I try, I take off and weaken the vertical line when applying the horizontal. Many...
  20. D

    How to remove tile adhesive and sealant from a wet room floor

    We decided to replace the mosaic floor tiles in our wet room (2m x 2m). I've removed the tiles, but having difficulty removing the tile adhesive and waterproof sealant below. I've broken up some of the adhesive to expose the black sealant below, and I've used white spirit to soften the sealant...
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