Repointing a Stone Wall with Lime Mortar

Тәжірибелік нұсқаулар және стиль

Time to take a short break from the roof and get started on the west gable end wall. This wall had been pointed with cement and needs to be restored back to the far more suitable lime mortar to keep the wall breathable and make sure that the stone is better preserved.
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#limemortar #stonewall #repointingwithlime

Пікірлер: 186

  • @HalfManThirdBiscuit
    @HalfManThirdBiscuit3 жыл бұрын

    Lime! The very job which caused me to find your channel in the first place. I must have binged the whole lot over the past 18 months!

  • @selco274395
    @selco2743953 жыл бұрын

    Nice pointing, wrong time of year for line work, particularly lime putty mortars. NHL mortars have a slightly better chance, but generally lime season is from April to October. Use a pan mixer to mix rather than paddle mixer or normal bell mixer. Pan mixer crushes the mortar and makes it far more plastic and pliable. You have been lucky so far in November it’s been relatively mild, but you will need to protect that area through the winter from below 5 degree temperatures, otherwise it will blow and fail, rain and drying winds will also exacerbate problems. Likely to shrink so you’ll need to retool it. I believe lime mortars cure at a rate of about 3 mm depth per month, so although the surface may have a hard skin, beneath it will be soft and vulnerable to frost blowing; the surface flakes off. Wait until spring and do it then. Ex English Heritage I am a QS who works for conservation companies.

  • @willmoore7582

    @willmoore7582

    3 жыл бұрын

    I live in Brittany and need to repoint some walls both internal and external so I am watching lots of tutorials presently. Your advice re suitable months to do is simply priceless and can save a lot of heartache and money. Is it correct that I use; sharp sand (?) of a suitable colour to complement the stones and lime in a 3/4/5:1 ratio? Much appreciated if you could advise in due course..regards Will

  • @Qizhang1

    @Qizhang1

    3 жыл бұрын

    @@willmoore7582 we tend to use sharp sand and NHL 2 or 3.5 at 5 : 2 Sharp sand to lime, , also I would sieve the sharp sand as well as they tend to have quite a lot of bigger aggregates. we have recently found some premix from the old house store which comes in powder form and you just need to add some water, and mix well

  • @davidjames2145

    @davidjames2145

    2 жыл бұрын

    Totally agree. I'm repointing an old cottage in Northern Scotland, so you can imagine how short the 'lime season' is up there. Basically, up here if you're not being bitten by something it's too early or late. 😁 I've had a few shrinkage failures so using damp sheets and loose plastic (not enough to prevent air access) which seems to be better. So much nicer than working with OPC. The English Heritage tome on using lime is superb by the way, although not cheap and not a 5-minute read. Glad I bought it though.

  • @gordonlaw8920

    @gordonlaw8920

    2 жыл бұрын

    It's 3 mm per year if you're lucky If he was going to use a pan mixer he could of paid someone else to do the job as they are 3 grand minimum April till October What about July August when the air temp is to high You may be a q's but you have never been on the tools by the sounds of it Putty is for inside not out it was used for decorative work not outside work

  • @tonyalways7174

    @tonyalways7174

    5 ай бұрын

    What a load of tosh. You must live in la la land

  • @liamg9846
    @liamg98463 жыл бұрын

    Tip for pointing like that... right handed go from right to left then when you’re pushing the mortar in you can really press it in against what’s already there. 👍🏻.

  • @SocialistChampagne

    @SocialistChampagne

    3 жыл бұрын

    Also, do the perps first

  • @lksf9820

    @lksf9820

    2 жыл бұрын

    And bash it with the churning brush to compact it.

  • @partybwoy8521

    @partybwoy8521

    2 жыл бұрын

    Perps 1st . Always wet the stone . Horrible job raking and pointing . I'd run the grinder over it after you've brok it all out. Helps to keep a nice square edge

  • @lukedevereaux4577

    @lukedevereaux4577

    Жыл бұрын

    ​@@partybwoy8521it's alright when you're on price

  • @coffeefortwosolly
    @coffeefortwosolly3 жыл бұрын

    That was not only satisfying but looked stunning after it was brushed...I could watch you do the whole wall...just keep the camera rolling 🤣🤣🙋🏻‍♀️💕🇬🇧

  • @richardkerin1377
    @richardkerin13773 жыл бұрын

    Get an old plastic bucket lid and cut it in half. Cheap lightweight hawk which can hold a lot of putty. That and a short tuck pointer is all you need. Problem now will be the weather and protecting the work for the winter. Hope all goes well 👍

  • @bobcharlie7982
    @bobcharlie79823 жыл бұрын

    Good to see it done properly. Lots of historic homes round my way and 90% have had gypsum cement or render. Lots of hundred year old oak frames that have been destroyed only in the last 50years

  • @marcpatchett2690
    @marcpatchett26903 жыл бұрын

    I’m just doing this myself. Some of our stones are really close together and it’s taking a good while. Labour of love.

  • @clivewilliams1406

    @clivewilliams1406

    3 жыл бұрын

    Dressed stone should have a 3mm joint so that it is difficult to point however, it rarely needs pointing as the erosion should not be more than 3mm deep

  • @athloneduke
    @athloneduke3 жыл бұрын

    You have the patience of Jobe, looking forward to no more scaffolding and you indoors on another project.

  • @ronnieproctor6856
    @ronnieproctor68563 жыл бұрын

    Best advice is to work back into the mortar you have just put in it will make your life easier 😎👍

  • @gca259
    @gca2593 жыл бұрын

    Tim, the attention to detail is superb. Re-pointing tip from an old-school bricklayer - do the perpends (vertical joints) first.

  • @davecotterell420

    @davecotterell420

    2 жыл бұрын

    I was taught with flush pointing the beds first and what is surprising how much gets pushed up the perp and same at the other end when you come to the perps a lot of them are already filled up and just needs one swipe. Weather struck opposite way, perps first and it takes longer up to 3 or 4 goes once if your lucky. I use a hawk and a tray which is 0.5 metre ideal for flush pointing when used straight on the wall pushing the cement straight of tray onto wall i find this way fills the joints up better and quicker. What a great job, i love working on old buildings churches and the like brick and flint. Forgot to mention i was taught to mix a big batch cover it and leave it for about 2 weeks that's with no cement

  • @williamrichards9971
    @williamrichards99713 жыл бұрын

    Always wondered how and why like mortar is used. Great vid. From an old retired US contractor!

  • @vaalrus
    @vaalrus3 жыл бұрын

    Sometimes those SDS drills can be brought back with new piston seals and a change of oil, saved my big ol’ Bosch from the scrap heap.

  • @thyandyr7369
    @thyandyr73693 жыл бұрын

    Great channel. I love when people do things right and not the easy and stupid way.

  • @TheRestorationCouple

    @TheRestorationCouple

    3 жыл бұрын

    Me too. 👍

  • @lewispewsey6843
    @lewispewsey68433 жыл бұрын

    Seen this on Instagram earlier and been looking forward to it. Hope you and the family are safe and well tim 👍

  • @TheRestorationCouple

    @TheRestorationCouple

    3 жыл бұрын

    Shot and edited the same day, that rarely happens! 😁

  • @peterfriel5129
    @peterfriel51293 жыл бұрын

    You have just saved your house Tim . Wish these so called builders would follow your example

  • @metallitech
    @metallitech3 жыл бұрын

    You are supposed to strike with the brush (per widespread UK traditional method). Lime mortar always has a lot of shrinkage and needs to be compressed.

  • @hectiksoldier

    @hectiksoldier

    3 жыл бұрын

    As said above! Leaving it to dry so it has a leathery texture and then beating it with a churn brush will compact the lime and also bring the grain out and will result in a better finish! But none the less good job!

  • @dannyburriss383
    @dannyburriss3833 жыл бұрын

    I like how you are keeping to the historic building traditions. A labor of love.

  • @rochellesumeray4213
    @rochellesumeray42133 жыл бұрын

    Such patience needed but so worth it. Looking amazing.

  • @AbellTo
    @AbellTo3 жыл бұрын

    I love working with lime over cement. I’ve done a load of brickwork repairs recently with nhl 3.5 and it’s so nice to point up with, even if you get some on the face it cleans up so easily

  • @charliegalanti8765

    @charliegalanti8765

    2 жыл бұрын

    Hi Abell, do you believe type n mortar is bad to use on a 1890 stone foundation? Thx Charlie

  • @AbellTo

    @AbellTo

    2 жыл бұрын

    @@charliegalanti8765 I’m not familiar with Type N mortar I’m afraid

  • @bradhoward9055
    @bradhoward90553 жыл бұрын

    You have a rather large brain and a heart to match. Thank you for sharing. So very cool to experience what you and your wife have accomplished with your projects, but especially your children. The world needs lots more of you.

  • @lbh002
    @lbh0023 жыл бұрын

    That lime based mortar looks so much better. Well done!

  • @MrCobbsalad
    @MrCobbsalad Жыл бұрын

    Well done, you are willing to give anything a bash. I tend to point it really proud then brush it when dry. a bigger key might help also 👍👍

  • @dougsaunders8109
    @dougsaunders81093 жыл бұрын

    I would be really interested in more lime videos. As a fellow DIY’er always interested in seeing other peoples experiences with such products which good knowledge is hard to find. Pointing is fiddly I stumbled across the same tool for some lime pointing. Found it to be really good. Also got a cheap plastic hawk, as I found it much easier to hold up next to the wall. Lime loved the expensive aluminium hawk, as it ate it

  • @davidbanner9001
    @davidbanner90013 жыл бұрын

    That's looking so good. It's gonna be beautiful when the entire house is completed.

  • @jimgeelan5949
    @jimgeelan59493 жыл бұрын

    Tool is a heart and square, beautiful job Tim well worth all the effort 👍

  • @gflorey1975
    @gflorey19753 жыл бұрын

    Another excellent video. Your work is amazing!!

  • @Littlelamb2023
    @Littlelamb20233 жыл бұрын

    its so funny fella every time i have a job to do on my house and need some help, i find a vid of you doing it haha top man, And job looks awesome!

  • @geewilliams2178
    @geewilliams21783 жыл бұрын

    Lovely. really enjoying this series

  • @oddjobbill
    @oddjobbill3 жыл бұрын

    Fantastic work it's great that your doing it all old school

  • @Academicidiot
    @Academicidiot3 жыл бұрын

    Love Limebase, Joe has been so helpful to me learning how to use lime. I used his Taunton mix. I would recommend emptying it all into a bucket to get it homogeneous again and storing bags flat. Should dampen the wall first then leave to dry for ten+ mins. Point in morter. Then slap back with a brush about an hour latter. Buy an extra bag or two to keep around for odd jobs latter on.

  • @adamjosephbliss
    @adamjosephbliss3 жыл бұрын

    I really love these videos where you show how your trying to do things the correct, and old way of things.

  • @jodirauth8847
    @jodirauth88473 жыл бұрын

    Looks beautiful

  • @datheat2854
    @datheat2854 Жыл бұрын

    I was always trained to do ( Perp joints 1st ) & then Bed joints ) but your making it work for you.

  • @GMTpointingspecialistsltd
    @GMTpointingspecialistsltd2 жыл бұрын

    Well done for having a go Lime pointing is a mind field people will say do it this way or that way Use this lime not that lime So well done All I will say is people think cold weather is a bad time but you will get a slow set 1mm a month But not many will say don't do it in full sun in the summer that's a terrible time to do it so Keep up the good work

  • @J.HarveyStonework
    @J.HarveyStonework2 жыл бұрын

    Great work!

  • @petemoring67
    @petemoring673 жыл бұрын

    Good to see that dodgey Cement GO!! :-)

  • @valcaineaux7549
    @valcaineaux75493 жыл бұрын

    Good job, well done!

  • @tonitaylor5485
    @tonitaylor54853 жыл бұрын

    Great work as always. Nice to see (but not seen) someone up there with you. Impressive on IG you said “get the video up tonight” and here it is 🙌🏽. Is this Jo’s editing work? 🤔. I saw a gentleman on TikTok doing finish work on a pantry entryway. He put pocket holes in the baseboard to attach it to the the door frame; made me think of you, then glued a matching laminate over the baseboard inside and out. Really nice finish work ... in the comment section some said “What was the point of doing the laminate on the inside where nobody would see it, why not just leave it bare wood” 😱🤯 ...I left a complimentary comment for the creator on his finish work. Tim I know you think you do over kill on some projects BUT it is such a breath of fresh air to see someone do clean work. Watching you take time (research) and care on projects and me knowing someone is watching, learning and appreciating what can be had by doing the same.

  • @T.E.P.
    @T.E.P.3 жыл бұрын

    very impressive ..... great results

  • @mikey673442
    @mikey6734423 жыл бұрын

    Excellent thanks for sharing.

  • @kierenboimufc5940
    @kierenboimufc59403 жыл бұрын

    I done brick work with lime mortar and instead of brushing it with a churn brush we use to beat the beds and purps bring out the aggregate

  • @johnc6919
    @johnc69193 жыл бұрын

    Great job, work does you great credit.

  • @anthonydenbigh3757
    @anthonydenbigh37573 жыл бұрын

    Good videos keep up the good work

  • @bertrandducouedic8621
    @bertrandducouedic86213 жыл бұрын

    Really nice job

  • @martinclarke6209
    @martinclarke62093 жыл бұрын

    Nice work Tim, really enjoy watching the progress, patience and skill that you show. Keep going 👍🏻

  • @markhesketh9467
    @markhesketh94673 жыл бұрын

    Suggest you get a churn brush to finish it with. Also worth having some vinegar eye wash with you or the proper eye wash. Don’t use water if the lime gets in your eyes.

  • @GrooverErn
    @GrooverErn3 жыл бұрын

    Looking great 👍

  • @bield7
    @bield73 жыл бұрын

    Really enjoyed the vid. Good to see that you used an SDS hammer drill to remove the old mortar. I’ve seen some ‘restoration experts’ use an angle grinder, resulting in damage to the face of the stone or brickwork where the disc has strayed from the joints.

  • @skaterguy52
    @skaterguy523 жыл бұрын

    That Titan drill owes you nothing. It’s been a seriously good drill for you since nearly the start I think. Just proves you don’t need to spend crazy money. Great job on the house Tim 👍🏻

  • @keefkhat4337

    @keefkhat4337

    3 жыл бұрын

    Perfect drill for a DIYer, however a professional using that drill every day would want something much more robust. Machinemart has what you need!

  • @davidjames2145

    @davidjames2145

    2 жыл бұрын

    I'm a big fan of compressed air tools. Rugged, and the air itself often does the job. Need face protection though.

  • @rows3063
    @rows30633 жыл бұрын

    Looks fantastic, keep up the amazing work!! We’ve recently moved into an old cottage (approximately 350 years old) which from an external appearance has been ruined with the application of ‘modern’ render - most of it (thankfully) sounds hollow to the knocking stick (!!) as expected. We’re just beginning to get quotes in for stripping off the old portland & sand cement mix to be replaced with lime render over the cob elements and then lime repointing for the stonework. Interestingly none of the specialists would advocate doing any lime work at this time of year. Apparently it’ll take weeks before reaching full strength & until that happens rain & frost are the biggest enemies of lime. I’ll certainly be watching your future episodes (along with any others, of course!) and may take on parts of the pointing work here - but then, as someone probably famous once may have said, ‘Work fascinates me - I could sit and watch it all day’. From that you could be forgiven for thinking that I fall into the ‘reluctant diy’er camp!!

  • @flashback9966
    @flashback99663 жыл бұрын

    Beautiful. . . .

  • @stevenbennett3922
    @stevenbennett39223 жыл бұрын

    Looks good

  • @danielwardle5374
    @danielwardle53745 ай бұрын

    if you are right handed start from the right hand side so you are pushing it against itself you will find it easier and quicker

  • @steved8038
    @steved80383 жыл бұрын

    Bloody good job well done, puts most so called professionals to shame

  • @timurzi6434
    @timurzi64343 жыл бұрын

    I was taught to wet the joint prior to pointing. Looks great 👍

  • @TheRestorationCouple

    @TheRestorationCouple

    3 жыл бұрын

    Yes all showered down well first. 👍

  • @sjhcfp8146
    @sjhcfp81463 жыл бұрын

    I’ve been wanting to use lime since attending a SPAB day a few years back, this has inspired me Sad news about the drill though, wounded in action :(

  • @acornhomestead3575
    @acornhomestead35752 жыл бұрын

    New follower, love the video. Shows how time consuming repointing is... But also that it is doable even (I hope) for me. I hope that the links you have offer you a bit from, I ordered 2 of the pointing tools via your link

  • @JonathanRobinson42
    @JonathanRobinson423 жыл бұрын

    Looks good, I am doing the same at the top of a gable wall at the moment. Just started putting a bit of pozzolan in due to the time of year (Argical). I know it is a risk this late but I have my own scaffolding so can fix any problems if it gets damaged by frost, etc., next year. Better than the holes in the wall there are now and it will at least protect what is left of the exposed common (earth) mortar used in the centre of the wall. The latter seems to be made of yellow clay subsoil stabilised with lime which definitely does not do well if it gets wet (it crumbles to dust) but stays stiff as long as it is dry. The hot mixed lime mortar will act as a sacrificial layer pulling water out by capillary action as soon as it has dried at the surface, even before it carbonated to full strength as I understand it. Hot mixing using quicklime and applying immediately also seems to give an earlier stiffness to the mortar with less shrinkage and has more free lime to heal micro-cracks and to assist with the moisture transport mechanism. It is also an east facing wall with overhanging eaves so rarely gets driving rain.

  • @peterridding4874

    @peterridding4874

    2 жыл бұрын

    Hi I’ve been watching Tim’s lime pointing video and reading the comments. I’m in exactly the same scenario as you were a year ago , hot lime pointing in winter . Just out of interest if you don’t mind me asking , how did your pointing fair ? , and any pointers that might help ? Many thanks in advance

  • @freakeystyley34
    @freakeystyley345 ай бұрын

    I love this - I drive past your old house several times a week and it still looks good. Pointing done well enhances the look of a house so much, and there's so much bad pointing out there, particularly in this area! We have a lot of this to do to our detached 5 bed, and I was thinking that going around and removing all the old pointing first would make sense, then doing the repointing, but I imagine this would leave joints exposed for months or more. Do you think that's a problem?

  • @manillafresh57
    @manillafresh573 жыл бұрын

    Great job. Do all these projects cause you any stress? I’m in a similar situation and the thought of all the projects I need to complete is sometimes overwhelming.

  • @thepsychonaut8212
    @thepsychonaut82122 жыл бұрын

    wow what a tedious job...takes a certain kinda person for this! nice job!

  • @fireblaster9961
    @fireblaster99613 жыл бұрын

    Might find it easy to apply the pointing against the bit you have already filled.

  • @markhep
    @markhep3 жыл бұрын

    Made a nice job that hammer drill. And no dust win win 👍👍👍👍👌👌

  • @skaterguy52

    @skaterguy52

    3 жыл бұрын

    Love the vids mark 👍🏻

  • @markhep

    @markhep

    3 жыл бұрын

    @@skaterguy52 👍👍👍

  • @h9rae
    @h9rae3 жыл бұрын

    Amazing job great finish, Just saw on the video that your slates on the edge are moving quite a lot in the wind, hope that won't be a problem in the future

  • @TheRestorationCouple

    @TheRestorationCouple

    3 жыл бұрын

    Rae S hope not!! Can only assume camera movement because they are pretty much locked down. 👍

  • @philbotherobot
    @philbotherobot3 жыл бұрын

    Looking good mate , get your sen a proper hand board or little pointing hod. Point on to what’s already there so back on your self if that makes sense . Start higher up if it’s warmer and you need to re soak the wall then you won’t damage what you’ve just done . Looks great and good to see use of the lime mortar .

  • @daveramsay8598
    @daveramsay85983 жыл бұрын

    Just a pointer to those thinking of removing cement mortar to go back to lime, which is the correct way to go, I would suggest using a thin diamond cutting disc on an angle grinder to cut a slot in the cement pointing to the depth of the cement pointing. This allows the pointing to be tapped out with a chisel and you don't get damage to the stone edges. Very important on sandstone as using the sds chisel removes the corners of softer stone and rounds them off making the "gap" larger. I also agree with an above comment you work right to left pushing the mortar in hard for RH people.

  • @jonathanpounds7143

    @jonathanpounds7143

    3 жыл бұрын

    I disagree with the using an angle grinder, these can equally damage the corners of both stone and brick. A specialist cutter like the arbotech brick and mortar saw is more suitable, shame they are a lot more expensive though!

  • @daveramsay8598

    @daveramsay8598

    3 жыл бұрын

    @@jonathanpounds7143 Jonathan you use a diamond cutting disc, a thin one and you slice down the middle of the cement not touching the stone, it's an easy cut but you don't touch the stone. After you just tap the cement with a hand chisel and the remaining cement "falls" off the stone without belting it. This is the least damaging on the stone you are trying to preserve and restore. It is also quick.

  • @daveramsay8598

    @daveramsay8598

    3 жыл бұрын

    @@jonathanpounds7143 on brick i use a mortar rake wich is c. 5mm thick and a diamond type disc. Yes you keep it off the brick but once at depth it's easy to guide, I use a cover with a vacuum attachment to suck the dust away it's only plastic but works well a metal one is pricey.

  • @sydneybull4851

    @sydneybull4851

    3 жыл бұрын

    @@jonathanpounds7143 I have come across other people also recommending the Arbortech masonry saw for this sort of raking work. Are there any other brands that do this type of tool? Seems like Arbortech has cornered the market, the price certainly reflects that...

  • @charliegalanti8765

    @charliegalanti8765

    2 жыл бұрын

    Hi Dave, is type N mortar with cement really that bad on a stone foundation above grade? Don't you think if they had it in 1890 they would have used it? Whats your thoughts?Why do they use it on newer buildings now when similar stone is laid.Thx,Charlie

  • @p4ult1
    @p4ult13 жыл бұрын

    Looking great so far fella, are you going to clean the stonework around the windows?

  • @paoc1791
    @paoc17913 жыл бұрын

    Looks amazing. Great video on something that isn't often well covered. As others have said, lime mortar needs more coverage. You'd think it is witchcraft..

  • @supervascular
    @supervascular2 жыл бұрын

    Nice

  • @carltonbreezy
    @carltonbreezy2 жыл бұрын

    Nice looking job 👍🏿 But I guess everybody's 25mm is different.

  • @AzH1988UK
    @AzH1988UK3 жыл бұрын

    Oh my god ,I have a new found respect for people who do that for a job . How mind numbing is that

  • @Littlelamb2023

    @Littlelamb2023

    3 жыл бұрын

    its very satisfying at the same time. how many office jobs can you step back and admire your beautiful work?

  • @dc-wp8oc
    @dc-wp8oc Жыл бұрын

    Could you apply the initial layer with a grout bag and then press into the joint with the tool?

  • @Pavlo_S.V.
    @Pavlo_S.V.8 ай бұрын

    Hello Great video, hard work and beautiful result Wanted to ask, in your opinion is possible to use cement (for better setting) with hydrated lime and sand (0,5:1:5 ratio) for rendering a brick wall layed with lime mortar, as it is quite difficult to find hydraulic lime in our region? Or even small amounts of cement will trap moisture, make wall unbreathable and ruin the bricks? Thank you

  • @danielwalker6020
    @danielwalker60203 жыл бұрын

    Looking good! Did an internal chimney breast exactly like this earlier in the year and now it's fully cured it looks great. Are those the new Isotunes ear defenders you're wearing at the end? Would love to get your thoughts on them - considering putting them on my Christmas list!

  • @spils78
    @spils783 жыл бұрын

    What SDS chisel bit are you using there, a flat chisel or more of a point/spike chisel?

  • @chasingsupercars558
    @chasingsupercars5583 жыл бұрын

    Where do you get the energy from?

  • @carlosdelascuevas6140
    @carlosdelascuevas61403 жыл бұрын

    Does the same technique and material applies to old clay bricks?

  • @samuelhearn8601
    @samuelhearn8601 Жыл бұрын

    Would you ever use a primer in the joints before applying lime render?

  • @graemetaylor629
    @graemetaylor629 Жыл бұрын

    That’s going to take forever

  • @heriothandyman3148
    @heriothandyman31483 жыл бұрын

    Are the pre-mix bags expensive? def takes all’s the head scratching and worry out of mixing line up. Looks a lovely mix/batch.

  • @jonathanbaber3534

    @jonathanbaber3534

    3 жыл бұрын

    About £8 a bag if you can collect. Great stuff

  • @clivebowen6938
    @clivebowen69383 жыл бұрын

    I would be very interested to know where you got the Lime mortar from in Somerset, please advise, thanks

  • @TheRestorationCouple

    @TheRestorationCouple

    3 жыл бұрын

    Link in the description. 👍

  • @PaulsComputerEmp
    @PaulsComputerEmp8 ай бұрын

    Non-hydraulic lime will set and harden through drying out and absorbing carbon dioxide from the air. This means they have a very slow set: CO2 is only absorbed when certain conditions are met. They are the softest, most breathable limes available. (-0AD not known to 1900AD) This is the type of lime you want for historical accuracy and very soft stone Hydraulic limes set under water and are made in the same way as non-hydraulic lime but using different limestone. They are sold as NHL (Natural Hydraulic Lime). and have an initial set when water is added, followed by hardening while they absorb carbon dioxide. The more hydraulic a lime is the faster it sets and the higher it's final strength, but this means that it is less breathable and flexible. (used from 1890 AD, first patented by John Smeaton in 1756. used 1800 to around 1930 when OPC/cement took over) Lime putty can be made from either type of lime, Hydraulic lime putty will set underwater within hours or days making them impractical, whereas non-hydraulic lime putty will remain plastic and improve with age. Softer Stone (e.g., Sandstone, Limestone, etc.): Non-hydraulic lime or Non-hydraulic lime putty is often preferred due to its softer, more flexible nature. It's less likely to cause stress or damage to softer stones and provides a good, gentle bond. Harder Stone (e.g., Granite, Basalt, etc.): NHL (Natural Hydraulic Lime) can be a suitable choice, especially if the stone is very hard and impermeable. NHL has hydraulic properties that allow it to set in the presence of water, which can be advantageous for these types of surfaces. NHL (Natural Hydraulic Lime) CAN also be used with Sandstone, limestone, especially if it's a harder, denser type of limestone, hope this helps people.

  • @tonybrennan2726
    @tonybrennan27263 жыл бұрын

    Really cool job, well it is November! Take a look at Mike Eye on KZread, I found it helpful in understanding lime mortar and the reason for potsolan. Hope this helps. Great work!

  • @heresyclub3653
    @heresyclub36533 жыл бұрын

    would all houses have lime mortar if built back in the 1890s. Our house has red brick and was built back then and I need to do a small repair on a lose brick. I suppose I need to figure out if its been redone with cement at some point as well.

  • @JonathanRobinson42

    @JonathanRobinson42

    3 жыл бұрын

    Yes it would have been built and pointed with lime as cement was unusual in house building even as late as the 1930's. Cement started to pick up particularly in general building after WWII as it was the new thing and was faster if not better for the buildings.

  • @davidjames2145
    @davidjames21452 жыл бұрын

    Nice video. Thanks for posting. It's amazing how many 'professional' builders have fleeced homeowners by pointing over lime with OPC. I was looking at some houses in East Anglia where some genius had pointed Victorian soft redbrick houses with OPC and caused the brick faces to delaminate as a result. It took thousands off the value of the properties. Such a shame, and so avoidable.

  • @krisrickson853
    @krisrickson8533 жыл бұрын

    If it was me I'd invest in a mini plastic hawk or a plasterers hawk for holding the lime, saves a lot of wastage

  • @bogey19018
    @bogey190182 жыл бұрын

    When you point, pull towards your work, not away from it.

  • @yourmaw6839
    @yourmaw68393 жыл бұрын

    Bit risky lime in November. Did you have any frost?

  • @brettrob1980
    @brettrob19809 ай бұрын

    November for lime work, you know it can't drop below 5 deg or it will fuck up the lime for months

  • @319mitch
    @319mitch3 жыл бұрын

    what type of stone is this?

  • @peterdnreynolds777
    @peterdnreynolds7773 жыл бұрын

    Another great video. Would it not be better to use one of those repointing gun things that look like an over sized caulking gun that they sell at Screwfix, Toolstation or machine mart.

  • @3scottiedogs
    @3scottiedogs3 жыл бұрын

    That is a lot of pointing. A hawk and a couple of tuc pointers to suit the size of the joints. Rub it up with a old towel

  • @leewalker8099
    @leewalker80993 жыл бұрын

    Hope it's a hot lime mortar your using

  • @sparkyprojects
    @sparkyprojects3 жыл бұрын

    I'm wondering if an air powered chisel would be better, smaller and lighter, easier on the hands

  • @TheRestorationCouple

    @TheRestorationCouple

    3 жыл бұрын

    I did that at first but probably would need a bigger compressor. It’s easy enough to get through tough.

  • @skaterguy52

    @skaterguy52

    3 жыл бұрын

    My friend Tom specialises in lime repointing and traditional restoration. He’s been using a needle scaler for this type of work and recently got a cordless Hilti one instead of compressor run. Good but pricey bit of kit

  • @james-jq8sk
    @james-jq8sk Жыл бұрын

    I have heard the lime mortar referred to as Lime Putty, not sure if they are the same but the stuff you had in your hand after mixing seemed putty like?

  • @Herdedsheep
    @Herdedsheep10 ай бұрын

    Where are you getting your lime from ?

  • @cathaloc
    @cathaloc3 жыл бұрын

    What is the name of the tool you are using to push the mortar into the joints? Would like to get one for my walls

  • @firestarter501

    @firestarter501

    3 жыл бұрын

    Ragni R314 Trowel and Square Small Tool 1/2in

  • @michg-l5416
    @michg-l54162 жыл бұрын

    What would happen if you had just knocked off the concrete pointing without replacing with lime? Thanks for the really useful videos on this and all the helpful links.

  • @benllewellyn1887
    @benllewellyn18873 жыл бұрын

    Does it specify mixing time? Usually 20 minutes with lime, easier in a mixer 😂

  • @alanshealy3061
    @alanshealy30613 жыл бұрын

    How long will that mortar last inside the bag I’ve never seen something like?

  • @jonathanbaber3534

    @jonathanbaber3534

    3 жыл бұрын

    Should last for years

  • @JonathanRobinson42

    @JonathanRobinson42

    3 жыл бұрын

    If it is a pure lime mix as long as you keep it damp and airtight, almost indefinitely. Once it has been opened keep the remainder packed down in a bucket with lid and little water covering the surface. Tip the water off before you knock it up to a sticky consistency (you don't want it too wet). If it has a pozzolan already mixed in or it is a hydraulic lime mix you don't have as long as the pozzolan induces a chemical set (rather than a set by absorbing CO2 for pure lime). The early chemical set protects the surface a bit when working this late in the year but frost can still damage it as already mentioned until it has properly carbonated.

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