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Iron Heart Fall/Winter 2025 Collection Preview - Now Live

Shrinkage - What is it?

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  • G
    Giles
    IHUK Crew
    Joined: 22 Sept 2009

    Yarns and/or fabrics are not fixed materials.  They consist of separate fibres that will stretch when exposed to tension, i.e. they elongate during the process of being made into cloth (during spinning, weaving, bleaching, dyeing and the various finishing processes, yarns and cloth are under continuous tension).  Some or all of this stretch within the fabric is retained in the post-loom fabric because of friction between the fibres and the yarns.

    The stretch that occurs can be eliminated when the friction within the fabric is reduced.  This will happen during  soaking and/or washing, where both water and soap act as lubricants.  The lubricants, along with the mechanical action of the washer, help the fibres relax and contract (shrink) back to their original length.

    One of the reasons that dry cleaning does not shrink natural fabrics is that the friction within the fabric is not reduced by dampening.

    "OK face up to it - you're useless but generally pretty honest and straightforward . . . it's a rare combination of qualities that I have come to admire in you" - Geo 2011

    last edited by 11 Feb 2013, 13:55 1 Reply Last reply Reply Quote 0
    • M
      MikeC
      Banned
      Joined: 7 Nov 2011

      I love shrinkage!!!

      last edited by 11 Feb 2013, 14:13 1 Reply Last reply Reply Quote 0
      • P
        Ponyboy312
        Joined: 31 Jul 2013

        @MikeC:

        I love shrinkage!!!

        Thats what she said.

        colonelclegg: if you threw up on them just wash them dude, especially if your not sure if its your puke…......

        last edited by 10 Aug 2013, 23:21 1 Reply Last reply Reply Quote 0
        • G
          Giles
          IHUK Crew
          Joined: 22 Sept 2009

          We get a lot of question of the type:

          How much will the thigh shrink?
          How much will the front rise shrink?

          All vertical measurements will shrink at the same ratio as the inseam shrinkage
          All horizontal measurements will shrink at the same ratio as the waist shrinkage

          So say the shrinkage of the inseam in 2" over 36", that is 5.55% shrinkage

          "OK face up to it - you're useless but generally pretty honest and straightforward . . . it's a rare combination of qualities that I have come to admire in you" - Geo 2011

          last edited by 11 May 2014, 17:21 5 Nov 2014, 17:05 1 Reply Last reply Reply Quote 0
          • S
            simonc
            Banned
            Joined: 28 Nov 2010

            Nice.

            last edited by 6 Nov 2014, 10:38 1 Reply Last reply Reply Quote 0
            • D
              derivative666
              Joined: 30 Jan 2011

              Shrinkage, isn't this what happens during an ice cold shower?

              "honorable mention to the bearded giant aka derivative666 for being a stand up dude & not changing with the seasons since i've been around these parts" Monday

              last edited by 6 Nov 2014, 15:17 1 Reply Last reply Reply Quote 0
              • G
                Giles
                IHUK Crew
                Joined: 22 Sept 2009

                Not to me…..:-)

                "OK face up to it - you're useless but generally pretty honest and straightforward . . . it's a rare combination of qualities that I have come to admire in you" - Geo 2011

                last edited by 6 Nov 2014, 15:25 1 Reply Last reply Reply Quote 0
                • S
                  Seul
                  Joined: 24 Nov 2009

                  There isn't enough to shrink…

                  last edited by 6 Nov 2014, 17:53 1 Reply Last reply Reply Quote 1
                  • C
                    calhart
                    Joined: 1 May 2015

                    Hi Guys,
                    im going to resurrect this topic, or put it to sleep. i work for an industrial laundry machine supplier and some of our machines produce 120kg of washed linen every 2 minutes. we spend huge amounts of money proving to large hotel chains that its not our fault their sheets or towels have shrunk. we regularly ship sample packages to our lab in the Netherlands to be test. and then people dont like being told that the 1 million euro worth of sheets they just bought will shrink unevenly or by huge amounts. we sometimes get garments to test and my friend there states in his opinion some denim is the worst for quality and for ripping people off, for example one manufacturer in particular beginning with D the denim is bought extremly cheaply and the cost of one pair to produce can be under 3 euro, they then sell for up to 250 euro!! the shrinkage in these is abnormal.
                    all items shrink at different rates even from the same roll of material. what im getting to is ….IHUK i think do an awesome job of informing on size and shrinkage, and the jeans are top quality  🙂

                    last edited by 9 May 2015, 07:23 1 Reply Last reply Reply Quote 0
                    • G
                      Giles
                      IHUK Crew
                      Joined: 22 Sept 2009

                      @calhart You do know I am desperate to see one of your machines don't you?

                      "OK face up to it - you're useless but generally pretty honest and straightforward . . . it's a rare combination of qualities that I have come to admire in you" - Geo 2011

                      last edited by 9 May 2015, 07:35 1 Reply Last reply Reply Quote 0
                      • C
                        calhart
                        Joined: 1 May 2015

                        this link is a quick video, sorry about the dodgy music 🙂
                        if you ever want to look round one of these places there are a couple near you i think,

                        last edited by 9 May 2015, 10:13 1 Reply Last reply Reply Quote 0
                        • D
                          dj
                          Raw and Unwashed
                          Joined: 25 Jul 2019

                          Pandemic has been great for me, more time for exercise, meditation, yoga, baking, cooking etc.

                          But I have lost 1.5 stone and some of my jeans have not shrunk with me. What would be the best way to shrink them - each pair I have had had a hand got wash before being hemmed.

                          Should I try as hot a wash as possible in the washing machine, inside out but with a gentle spin cycle? I don’t have a tumble dryer.  Need to permanently lose at least an inch from the waist of the trousers.

                          last edited by 21 Oct 2020, 16:06 1 Reply Last reply Reply Quote 0
                          • O
                            organisys
                            Raw and Unwashed
                            Joined: 24 Mar 2015

                            Wash em Hot and for a long time, it's the agitation that helps the shrinkage….

                            Pride of Japan :-)

                            last edited by 21 Oct 2020, 16:33 1 Reply Last reply Reply Quote 0
                            • N
                              neph93
                              見習いボス
                              Joined: 18 Aug 2014

                              @dj:

                              Should I try as hot a wash as possible in the washing machine, inside out but with a gentle spin cycle? I don’t have a tumble dryer.  Need to permanently lose at least an inch from the waist of the trousers.

                              Heat, water and agitation together is what you are after. But there is no guarantee it will work. It depends entirely on the fabric involved, how many and which processes they have been subjected to. Cotton fabric has a finite level of shrinkage. If this is maxed out already through, washing, sanforising, or other processes you won’t get any shrinkage at all whatever you do to them.

                              “Some of those that work forces
                              Are the same that burn crosses”

                              • Virginia Woolf
                              last edited by 21 Oct 2020, 20:25 1 Reply Last reply Reply Quote 0
                              • Filthy2123ozjunkieF
                                Filthy2123ozjunkie
                                見習いボスー
                                Joined: 21 Jan 2013

                                I was surprised to find out that I was able to shrink a pair of once washed 822/ 21 oz denim a full half inch in the waist by soaking in boiling water. I am reheating the water now to go for a second soak.

                                Waist before was a 19.2 and after an hour was 18.6 ???

                                last edited by 21 Jun 2021, 15:41 1 Reply Last reply Reply Quote 0
                                • Filthy2123ozjunkieF
                                  Filthy2123ozjunkie
                                  見習いボスー
                                  Joined: 21 Jan 2013

                                  I guess maybe it was the way I was measuring because they are back to being close to a 19 in the waist after the second soak.  Seems like I lost about a half an inch in the inseam though. And got some cool roping.

                                  last edited by 21 Jun 2021, 17:04 1 Reply Last reply Reply Quote 0
                                  • goosehdG
                                    goosehd
                                    Mod Squad
                                    Joined: 8 Apr 2016

                                    Bumping this thread as it’s a question that pops up fairly frequently. Yes, as Mike pointed out you can shrink 21oz., but you will also notice that the shrinkage was temporary if at all.

                                    Not saying that it can’t be done, but some of the denims that you do see shrink is temporary at best.

                                    One of the things you need to pay attention to when buying is the product description listed for each item. It is a really good guide to use when purchasing and for taking care of your prized items.

                                    "I don't give a shit what anyone else is doing, we will do what is best for us and our customers" - Giles P. :)

                                    last edited by goosehd 25 May 2025, 20:37 1 Reply Last reply Reply Quote 3
                                    • CosmoSix5C
                                      CosmoSix5
                                      Haraki san Prodigy
                                      Joined: 4 Sept 2023

                                      Couldn't help myself. 😂😉
                                      I've tried to shrink things and I've tried not to shrink other things.. failed at both... Knowing/Ordering the right size is paramount as stated above.
                                      "I don't know how you guys walk around with those things" Elaine
                                      george-costanza-i-was-in-the-pool.gif

                                      John 1 1-3 ❤️♥️❤️♥️

                                      last edited by CosmoSix5 25 May 2025, 21:10 1 Reply Last reply Reply Quote 0
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