expansion

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Thermal expansion is the tendency of matter to change its shape, area, volume, and density in response to a change in temperature, usually not including phase transitions.Temperature is a monotonic function of the average molecular kinetic energy of a substance. When a substance is heated, molecules begin to vibrate and move more, usually creating more distance between themselves. Substances which contract with increasing temperature are unusual, and only occur within limited temperature ranges (see examples below). The relative expansion (also called strain) divided by the change in temperature is called the material's coefficient of linear thermal expansion and generally varies with temperature. As energy in particles increases, they start moving faster and faster weakening the intermolecular forces between them, therefore expanding the substance.

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  1. B

    Expansion joint needed or not?

    Doing a shop floor over the weekend, Its a wooden floor measuring 8m x 5m (40sq/m), using 1000 x 500 and 500 x 500 porcelain, skirting to go on after tiling completed so a expansion joint can be incorporated around the edge, Is a expansion joint needed along the 8m part of the floor? or is every...
  2. S

    skirtingboard grout line - finishing for expansion and neatness?

    Floor tiling up to the face of skirtingboards that you cant or are not allowed to remove … how do you like to finish that final ‘grouting’ line? (grout, calk, silicone?). thx, Stan
  3. G

    Expansion joint in Roma Opus or French Pattern Travertine

    I have a problem. We want to put a continuous Opus or French pattern of Travertine down in our new extension and kitchen (10m x 3.5m). However the problem is that the extension has a new concrete floor with UFH (ready to use but not connected yet) and the old kitchen is suspended timber, so...
  4. R

    Schluter Expansion Products

    Hi All. New to this site, already learned a lot as I am new to this tiling lark! Planning new bathroom project and advice would be much appreciated, so far: Tiles - Travertine light filled and honed 400 x 600 x 12mm Adhesive - Stonefix standard set flexi white bagged Grout - Stonefix flexi...
  5. D

    Expansion joints

    I've been given the go ahead to repair/replace as necessary, some of the tiles around the local leisure centre swimming pool, which will include replacing two rows of tiles and the adjoining expansion joints.. I've had a look at the Schluter website and I like the look of the Dilex MP... do...
  6. D

    Electric Underfloor Screed & Tile Expansion Joints?

    Hi, I am presently having a house built with Electric underfloor heating. The floor screed has been pumped/poured and seems to be calcium sulphate type. I have read varying reports as to the requirements for movement/expansion joints in the screed and tiles. The largest area in the house is 36m2...
  7. A

    Expansion Joints

    Hi Guys n Gals Here is a question that I got asked today and coudn't give a qualified answer to as I just dont know. When and how big does a floor have to be before installing an expansion joint? :dizzy2: Was quite stumped with this cos I have never had a floor to that was big enough. I...
  8. S

    Expansion Joint

    Going to quote for a 775m2 job on 3 floors of a shop (225m2 per floor at 15mx15m). The architect said that an expansion joint every 6m2 needs to be installed. Tiles are poss 600x600 or 800x800. The base will be solid concrete. My understanding is an expansion joint is only placed above a joint...
  9. P

    Expansion joints, cracks and Pecilastic

    I've a largish stone floor to tile that I've mentioned on here before. The largest area being about 10m x 5m. It has UFH and I'm thinking it may well need expansion joints. Although it's a new build there's no way of contacting the architect, so no discussing with him. I think I'll have to write...
  10. S

    Expansion Gaps ?

    Do I need to leave gaps between individual pieces of plywood that make up my complete plywood floor that I am going to tile onto? The floor is 18mm thick WBP. It will be glued and screwed down. What do I do with the gaps? Fill them or leave them clear? If to be filled, what do I fill with...
  11. N

    140sqm floor 600 by 600 ceramics, expansion joint query!

    Hi fellas.. Can anyone advise.. Just starting a 140sqm commercial job. Its using 600 by 600 ceramics, brand new floor, perfectly smooth. 3 mm gaps. its 17m by 8m , long rectangular, pretty much no interruptions or obstacles... will be leaving gaps around edges as box skirting is going on...
  12. S

    any tips on doing tidy expansion joints

    hey everyone just getting into tiling. just wondering what tips uns guys have for doing nice and tiding expansion joint on wall and floors. thanks guys
  13. W

    Expansion joints.........

    Evening all. Just been to quote for a floor 2nite. Got their and find that a tiler has already started the job but is unable to finish it until January so the customer wants someone else to finish it. She is basically having all of her downstairs living area tiled. (Dining room, Lounge and hall)...
  14. J

    Expansion Joint Sealant/Grout?

    I'm tiling my kitchen floor and have been told to put a 10mm expansion joint around the whole area where the tiles meet the walls ( is this correct?) Not sure how to handle the expansion joint- I intend to put sealant into the expansion joint but do i then cover the sealant with grout or leave...
  15. U

    Silicone expansion joint

    Hello, i have tiled my floor with a limestone tile, wher my conservtry meets my kitchen i have a joint in the tiles to fill with silicone as an expander. Is this right, i read somewhere it needs to be done, thanx
  16. kilty55

    expansion joints and when should i use them

    hi all,im a bit lost as to where and how to install expansion joints,not installed any huge floors as yet but what size of area are we talking about before i start installing expansion joints? is it simply a case of instead of grout going in i would use silicone instead?cheers:stupid::thumbsup:
  17. G

    Movement & Expansion Joints

    Many suspected adhesive failure calls I visit, leave out vital expansion or movement joints where they are required. Where a customers concrete base extension meets the suspended timber floor of the original house, and vast meterage of flooring on top of UFH. There are a few ways in which these...
  18. D

    Movement Joints, Expansion Joints And Control Joint Profiles.

    Movement Joints, Expansion Joints And Control Joint Profiles from Schlüter® The movement joints, expansion joints and control joint profiles of our Schlüter-DILEX series offer maintenance free and functional solutions for all relevant movement joints in tile coverings. The...
  19. D

    Expansion Joint Help

    OK Guys, 207m sq floor, 405x405mm tile and epoxy resin grout in a food hygiene area.... How often should expansion joints be used and is there a specified joint that should be used? Contractor specifies expansion joint around perimeter of floor to skirting tile only but are coming back to me...
  20. S

    Do I need an expansion joint?

    I will soon be tiling a kitchen/diner with 330mm square glazed porcelain tiles. The floor is concrete, overlaid with Wedi board and T2Red UFCH. The floor is 6.3m x 3.8m. The tiles will be laid before the kitchen and skirting boards are fitted, so a 5mm gap will be left around all of the edges...
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