The benefits of hot mixed lime mortar

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  • Опубликовано: 9 ноя 2020
  • Just a rant about lime mortar. It gets slightly confused with baking bread and psychology but I'm sure you'll get the gist.
  • ХоббиХобби

Комментарии • 77

  • @FeralKid
    @FeralKid 3 года назад +7

    Very glad to see you using hotmix. I've been using it for about 3 yrs now, usually with woodash pozzolan and hardly use NHL at all anymore. Also big fan of hotwash limewashes. Well done, good stuff

    • @michaeljamesdesign
      @michaeljamesdesign  3 года назад +3

      Cheers bruv. Good on ya buddy. Keep up the hot mixing.

    • @macoveim2001
      @macoveim2001 26 дней назад

      @@FeralKid how do u make a hotwash paint?

  • @ianking4713
    @ianking4713 5 месяцев назад

    Best account on youtube for lime education. Well done

  • @chrisconboye
    @chrisconboye 3 года назад +2

    thankyou for your invaluable advice on lime pointing, I've had major issues which your videos have resolved thank you very much.

  • @deribrown
    @deribrown 3 года назад +1

    Look back in building history and the old boys never stopped working. I’m sold on hotlime too used not much else in the last year. Nice vid Mike👍

    • @michaeljamesdesign
      @michaeljamesdesign  3 года назад

      Cheers Deri. Glad you're in the hot lime. How you getting on with the bleed? Have you done anything on a badly detailed elevation?

  • @mmpoggs2033
    @mmpoggs2033 3 года назад

    Good looking finish!

  • @kevinallen9986
    @kevinallen9986 Год назад +2

    Nice job as usual. My question could or would you use lime mortar on new build brickwork
    Ta

    • @michaeljamesdesign
      @michaeljamesdesign  Год назад +1

      I would, yes. For a number of reasons. It's more environmentally friendly than cement, there'd be no need for expansion joints, would look nicer and when the house needed repointing it would be a hell of a lot easier to rake out the old mortar.

  • @Goggleberry123
    @Goggleberry123 2 года назад

    your quite right work didn't stop two hundred years ago I have just completed a job with NHL 3.5 December no problems as long as it can be covered and the temperature doesn't drop to silly

  • @bendavison8779
    @bendavison8779 3 года назад +2

    Very interesting video as always. Could I ask which NHL brands have the highest free like content? Keep up the great work.

    • @bendavison8779
      @bendavison8779 3 года назад +2

      *lime

    • @michaeljamesdesign
      @michaeljamesdesign  3 года назад +4

      See Decan Reed at Chalkdown lime. Tell him I sent ya.

    • @BenHalifax
      @BenHalifax Месяц назад

      @@michaeljamesdesigninteresting you say his name. Due to your videos and Copsey’s me and my partner have researched deeply and moved into the hot lime industry quite quickly. He made the clear on a post on Facebook, and he was very against us when we mentioned about NHL’s lime content and almost opposed what you and Nigel state.

    • @michaeljamesdesign
      @michaeljamesdesign  Месяц назад

      @@BenHalifax I'm not as anti NHL as Nigel. There is a need for them and they serve a purpose. There are some good ones.

  • @olly1803
    @olly1803 3 года назад +3

    Hi Mike, interesting videos as always. Do you have any preferences between kibbled and powdered quicklime when making your hot mix?

    • @michaeljamesdesign
      @michaeljamesdesign  3 года назад +4

      Kibble for building, powder for pointing.

    • @olly1803
      @olly1803 3 года назад +2

      @@michaeljamesdesign thanks for the prompt reply mike - still mild here in Devon which is great!

    • @macoveim2001
      @macoveim2001 28 дней назад

      What about for inside rendering and plastering​@@michaeljamesdesign

    • @michaeljamesdesign
      @michaeljamesdesign  28 дней назад +1

      @@macoveim2001 Perfect. But not for top coat plaster. Use a mature putty.

  • @reconciliation8491
    @reconciliation8491 3 года назад +1

    hot limey)) thanks for the video mate

  • @matte999me
    @matte999me 3 года назад

    Hi Michael. Very informative video. Looking forward to more. I recently repointed the whole of my gable with nhl 3.5 as I hadn't heard of the hot lime method. I hope it will be OK as I now read about the hydraulic limes being stronger than previously thought. I have seen the 2 options of quick lime. Kibbles and powdered. Which would you use on a brick built house (1750's) i would worry that with kibbled the slaking process may not fully take place over the powdered. Would love to hear your thoughts. Cheers matt

    • @matte999me
      @matte999me 3 года назад +1

      I have also just purchased a book written by nigel copsey to try and understand further before I carry out more work on the property. I have a cellar to prepare with lime and pointing on the remainder of the property where previous owners attacked it with cement!!!!

    • @michaeljamesdesign
      @michaeljamesdesign  3 года назад +1

      Kibble is for building only for the very reasons you state. NHL can be OK but it's all about its origin, free lime content and eventual compressive strength so you need to go as low as possible. What lime did you use?

    • @amyntas97jones29
      @amyntas97jones29 2 года назад +1

      @@matte999me If you are in doubt about the ingredients to use, email Nigel Copsey. I have found him only too willing to assist.

  • @Rageleet
    @Rageleet 3 года назад +1

    hey there, Learnt a lot from your videos and thank you for making them. Where do you buy your materials too ensure they are decent? I want to knock the cement render off the front of my 1930s mid terrace as the previous owners got a cream injection to fix damp and covered with cement inside/outside, Completely ignoring the concrete drive causing the issue. :( Cheers.

    • @michaeljamesdesign
      @michaeljamesdesign  3 года назад +2

      Declan at Chalk Down Lime. He'll keep you right.

    • @Rageleet
      @Rageleet 3 года назад +1

      @@michaeljamesdesign thanks for this, there's some really awesome products here, I haven't come across before, cheers :).

  • @philomena333
    @philomena333 3 года назад +1

    I mixed 1 part (hanson brand)...hydrated, and 1 part limelite renovating lime, with with 6 sharp sand to it. Is that good for flooring leveling underneath my living room floorboards, im using abit at a time ??? Thought mix best of both worlds together?

    • @michaeljamesdesign
      @michaeljamesdesign  3 года назад

      You need to speak to the Limelite manufacturers. I don't use it. Sorry.

  • @marginalgains8477
    @marginalgains8477 3 года назад +2

    Make more videos!!!

  • @thomas9429
    @thomas9429 7 месяцев назад

    You should be using portland cement.

  • @philomena333
    @philomena333 3 года назад +1

    I made hotmix back in Nov for. N u are right its better

  • @tomlewendon4563
    @tomlewendon4563 3 года назад +1

    Chilly

  • @Oligoesfishing
    @Oligoesfishing 3 года назад +1

    Could you give a new to lime person a simple explanation on hydrated and hydraulic
    What’s the difference ? Literally just looking it up and found you ! Wow your work is amazing . Inspiring 👍🏻 top job

    • @michaeljamesdesign
      @michaeljamesdesign  3 года назад +2

      I will. I'll do one as soon as I get a minute.

    • @johnbyrne8037
      @johnbyrne8037 3 года назад +5

      all building lime is Hydrated as it means adding water to quicklime. Hydrated lime can be wet - lime putty - or a powder. There are two basic kinds of powdered hydrated lime. The kind confusingly labelled and called hydrated lime which is dry lime putty, basically, and the kind called Hydraulic, which comes from the idea that it was preferred for hydraulic works such as piers and other structures in wet conditions. It differs from non hydraulic limes - lime putty and the before mentioned hydrated lime - in that it sets by a chemical reaction between various natural chemicals within it which are related to clay that got mixed with the lime back when the stone was laid down. Whereas lime putty or hydrated lime (non hydraulic limes) can only set by the absorption of carbon dioxide which is a much slower process. The science of both limes is more complicated than this as hydraulic also absorb some CO2 and the clay content of limestones vary greatly and so produce a wide range of hydraulic qualities but the manufacturers claim only three grades. There is plenty material on the subject for a long video but in the meantime I hope this helps - sorry Micheal to butt in.

    • @michaeljamesdesign
      @michaeljamesdesign  3 года назад +3

      @@johnbyrne8037 Cheers John, well said.

    • @macoveim2001
      @macoveim2001 28 дней назад

      Please make a video of explaining hot lime , lime putty , nhl. It s so confusing...​@@michaeljamesdesign

    • @macoveim2001
      @macoveim2001 28 дней назад

      ​@@johnbyrne8037thank u

  • @fabienchedal2695
    @fabienchedal2695 10 месяцев назад

    Hello, thanks for your video,
    I start "thanks to your videos and others" to make hot lime.
    Do you only put quicklime in the mixture ?

    • @michaeljamesdesign
      @michaeljamesdesign  10 месяцев назад

      And horsehair and pozzolan

    • @fabienchedal2695
      @fabienchedal2695 10 месяцев назад

      @@michaeljamesdesign "Do you have a video on the mix of horsehair, pozzolan, and quicklime? Thank you.

    • @michaeljamesdesign
      @michaeljamesdesign  10 месяцев назад

      Not yet. But Nigel Copsey has some material on youtube. @@fabienchedal2695

    • @michaeljamesdesign
      @michaeljamesdesign  10 месяцев назад

      ruclips.net/video/HVWCduEitkM/видео.html

  • @metallitech
    @metallitech 3 года назад

    Do you scrape/cut -back before striking?

  • @heriothandyman3148
    @heriothandyman3148 3 года назад

    Just pointed whole rubble stone gable end in otterbein nhl 5. Have I wasted my time and money and should have gone with hot lime?

    • @michaeljamesdesign
      @michaeljamesdesign  3 года назад

      That's a very relative question and perfect for youtube. Otterbein is a very good product and there's actually very little difference in free lime content between a 2, a 3.5 and a 5. They rank as 46, 45 and 43 respectively. In direct contrast, Secil NHL5 has a free lime content of only 14. You can see why Otterbein costs more than Secil. I can't really comment on your mortar though as you haven't mentioned your lime to sand ratio and I don't know anything about the sand you've used. But I certainly wouldn't worry. The end result is you have a high free lime content mortar which is going to be softer than your stone. The problem with NHL is that manufacturers only measure early compressive strength (some as early as 30 days) so we don't know how hard any of them will eventually set. This needs further investigation.

  • @philomena333
    @philomena333 3 года назад

    How to make hot lime, like this in vid 😂🤣im dumb dumb, and need to know how to make lime wash with tallam fat🙂 I'm also thinking of using 3sharp sand,1 hot lime, 1 hydrated hanson lime quarter pumice pollazan- near enough something like that. Whats u take on this for motar mix?

  • @reconciliation8491
    @reconciliation8491 3 года назад +1

    tell us more about limewash aka whitewash. tom sawyer made it passe. you ever hear of adding pig blood as a dye to the limewash? i have seen others add a bit of hot tallow or lard.

    • @michaeljamesdesign
      @michaeljamesdesign  3 года назад

      I'll have a go at some point but to be honest with you there's hardly any call for it nowadays.

  • @Southpoint2019
    @Southpoint2019 3 года назад +1

    Mike
    Quick question, I’m working with ecoright hydraulic lime, any tips for getting a smooth finish on red brickwork?

    • @michaeljamesdesign
      @michaeljamesdesign  3 года назад +1

      It's a quick question but there ain't not quick answer. I tend not to give out information like that as it has taken a long time to develop my mixes and finishes. I have a guy who works for me and only he's made privy to that kind of information. Sorry to disappoint.

    • @Southpoint2019
      @Southpoint2019 3 года назад +1

      michaeljamesdesign I understand, however it would be interesting to talk to you somehow about this stuff, I had a good day I think, guns are a no go but I was brought up on putting it in by hand and my skills have come in handy and I was able to create a flush finish but in 5 hours managed to achieve 5m2 in the wall and finished
      I have left tomorrow’s mix in the bucket ready for the morning.
      Would be nice to have your opinion on my work on this particular project ?

    • @Southpoint2019
      @Southpoint2019 3 года назад +1

      There is no problem with working in cold weather, a lot of it is timing,
      We know cement traps a lot of moisture so when it freezes it pops.
      Working on stock bricks is a dream because as long as you work not too close the ground I have found.
      I point in all seasons to very good results.

    • @Southpoint2019
      @Southpoint2019 3 года назад +2

      I have figured it out now, very good stuff to use if you leave it in a bucket over night.
      We really need to teach people how to do it correctly so houses are not ruined so I’ll post some videos Monday to help people mix it correctly and then how to apply it without it falling off the trowels.
      Thanks for responding anyway though

    • @michaeljamesdesign
      @michaeljamesdesign  3 года назад +1

      @@Southpoint2019 Don't forget to mix fresh every day when you're working at the bottom of your wall.

  • @tyremanguitars
    @tyremanguitars 4 месяца назад

    when would you use hydralime?

    • @michaeljamesdesign
      @michaeljamesdesign  4 месяца назад +1

      Internal rendering, as a plasticiser for NHL and to increase the free lime content, for pointing if there was nothing else available.

  • @jackwardley3626
    @jackwardley3626 Год назад

    well if your a sole trader and you only got exterior work you do it whenever you can't pick and choose got to make a living

  • @ricdavid7476
    @ricdavid7476 3 года назад

    "now then now then " that was a jimmy saville saying yikes!!!!!!!!!!!!!!!!!!!!!!!!!!111

    • @michaeljamesdesign
      @michaeljamesdesign  3 года назад +1

      Aye, a saying that he nicked off the lads up north. Of which I am one. And we still say it. "Now then".

  • @resterationman7347
    @resterationman7347 3 года назад

    Why don't you change to a 1 nhl3.5 1 quicklime 6 sand in the winter
    Hot lime doesn't stay hot for that long in the winter

    • @michaeljamesdesign
      @michaeljamesdesign  2 года назад +2

      For me to fully address your question you need to state which CL and NHL you're talking about. You've also to state whether the quicklime, NHL and sand are mixed as one or combined later as two separate mortars. On this basis I can only really loosely answer your question. Both NHL and quicklime have a free lime content and adding a binder with available lime to a binder with available lime simply increases the free lime content. High free lime content mortars are more susceptible to cold weather. If you're in doubt then try using St Astier NHL 2 in mid January. That has a free lime content of over 50%. Contrary to popular belief, the set in not accelerated by gauging NHL into quicklime mortar. In fact it works the other way. So much so that in optimum laboratory conditions (ref: N. Copsey) it took 12 months for the mortar to fully cure. Adding the two mutually exclusive limes together introduces two competing forces in the same way builders do when they add cement to lime mortar. It was never this way. If early strength is required then use a CL80 or add the right pozzolan. To address your statement about heat retention. During winter it's sensible to mix small volumes of mortar and keep it in something that helps it retain heat. Covering it also slows down heat loss. but if it's that cold then you shouldn't really be using lime. I'd only introduce NHL into a quicklime mortar if I wanted to slow down the set in summer. If I want to speed it up in winter then I add sand with a small clay content or a pozzolan or I use a good CL80. Hope that answers your question and addresses your statement.