HOW TO SCUD COAT SLURRY COAT CEMENT PLASTERING AND RENDERING DASHING SPLATTER COAT & MIX RATIO

[@macplastering]

The start of the project - building wall ect kzbin.info/www/bejne/gV7ce4tvqbZ8ebs

[@simonmcclean7092]

Very helpful video, thank you for posting it. There are not many good videos on KZbin about this key stage in rendering, so content like this is superb. The technique you highlight is also directly applicable to traditional harling with lime, albeit with a few different products. I've just done 100 sq. m of very friable internal stone walls in my house in preparation for lime plastering Your upload saved me a fair bit of money, so there's a few beers on me if you are ever in West Cork!

[@macplastering]

Nice1 mate yes if using lime just more less sub lime for cement and will work just as good was in limerick all not so long ago now working haha was wanting to shoot on down get at look at my blarney stone =]

[@ZylonFPV]

Hello, I’m here for the scud. Slapping it on seems like a good plan, gets into all those gaps 😊

[@macplastering]

it sure dose and also leave great key / grip for the next coats :)

[@the-gangler]

Glad I found this channel. If you weren't confident throwing the mix at a wall, could you paint it on to the wall with a large brush instead. Im thinking around windows if your worried about splashing them. Thanks

[@macplastering]

Yes buddy that dose work this way is faster and leaves a little nicer key for next coat but brushed on works 💪

[@manjichromagnon5480]

That music was lovely. Thanks for the harling lesson mac

[@macplastering]

Thanks man always here :)

[@pcas96]

The master of the mix respect

[@macplastering]

Thanks for the support paul mate :)

[@over50andfantabulous59]

You're hard and dedicated work is to be respected brother. So now you are another adopted internet son 🙂 Please thumbs up with me everyone. Thank you for blessing him.

[@macplastering]

Thank you :):)

[@emmettmccarthy7247]

hi there down south scudding used to be a must.when i worked up north then i rarly had to skud.the boss up there usnt bother exceptnif it was over brick which was rare.i adds the same think the polybond we used call it.its mighty stuff

[@macplastering]

Yea a mate of mine who worked with us a few jobs always talked about pollybond he was from Dublin said it was great gear , this SBR is real good even a taste will make a better mix for sure , and here yes we dont scud new block tend to scratch over it and would most times scud brick but sometimes just paint sbr depends on the job really

[@macplastering]

​@@epiphgd4302Possibly, depending on how clean it might need a power wash n be ok to go over ​@epiphgd4302

[@shredder9536]

This looks fun I've an old shed I might do this on, or try a section incase I make a hash

[@macplastering]

Hi mate thanks for watching and commenting funny this can be messy done a video recently this is one option to undercoat a wall before the next stages but the job i done was nice ground new tarmac and brick pavers and house nice windows and facia boards ect so the scud coat was not my 1st choice on it as the clean up and damage to surroundings was to high but it is a great way to 1st coat very strong and gives great key for the top coats Thanks again for watching shredder :)

[@shredder9536]

@@macplastering I saw plasterers do this with small stones in the mix too. I'll check out your other vids, good man 👍

[@macplastering]

@@shredder9536 Yes wet dash finish possibly this mix ratio is for the undercoat but it might look nicer on your shed as a tidy up, but to me wet dash would be the way to go Thanks for the support man on the channel :)

[@Molie085]

Thanks for the video. Big help 😀👍

[@macplastering]

So glad it has helped you mate :) always here and new videos every Sunday :)

[@macplastering]

A few new videos coming live should be a nice watch :) This Sunday and next :) might be some of my best yet

[@Smith-os1ho]

Would 6mm chip be any good mixed threw it

[@macplastering]

@Smith-os1ho might be a bit too big mate 6mm give a nice dash finish but might be bad for this as you be going over it, making you have to coat out pretty heavy

[@Smith-os1ho]

@macplastering need a thick coat of plaster to bed out a wall. Just thought that would have did the job.

[@cormackeeney3897]

Nice wrist action, lad.

[@macplastering]

Cheers buddy funny just uploaded 2 dashing vids recently wet dash n dry dash

[@AnnieThyme]

Hey mac, This seems a perfect video to say (as this kids do😂) this slaps*. I never would have expected this to be the technique but it seems very effective for such a thin mix. Kudos to your patient camerawoman who took one for the team and your uncredited special guest (the horse). Hope you all are well. Been a bit rough her (not C19), so I have been away but hopefully back more now, hope your week is getting off to a good start:) *Apologies for such a bad joke

[@macplastering]

Hi Annie hope things are picking up for you we are doing ok all seem to be in good health just praying it continues weather has been a little worse now witch is a pain with a few outside jobs to get done , this job has started to take shape just need to get the footage uploaded :) lets just say some detail has been started on it :) Always glad to hear from you Annie and hope things get better and better for you and everyone

[@krzysztofjastrzebski1919]

Hi Mac, God Bless you for your work. Would you always scud concrete blocks event if some have porous surface ? Do you know Thristle bond product? Would be possible to apply a coat of Thristle bond on the interior walls instead of scud coat to have a good grip for the next coat?

[@macplastering]

Some times its ok to go straight onto the blocks mate especially if they are new and fresh these are very old so the scud will be great grip, I wouldn't use an inside bond it mate as it might fail outside ,sbr is a good bonding agent

[@markhep]

There's a few that don't like sbr but I like using it works well I think. Looks quite a big wall now👍👍👍

[@macplastering]

I know , it can be hard to use on the top coat in all honesty but it is super strong gear I love it at the moment cant find anything better

[@markhep]

@@macplastering yere definitely the best for me too 👍

[@macplastering]

@@markhep great bonding ability's like very good can be used outside as waterproof and also improves strength and possibly flexibility its the real deal :)

[@nigelcann555]

Hi, mac, great video, when i have scuded wall, do you scratch coat on top or go for the top coat, very high suction uneven red brick wall, external thks

[@macplastering]

Most jobs i would recommend scud 1st day scratch 2nd day top coat last day mate

[@nigelcann555]

@@macplastering thanks mac top man

[@macplastering]

@@nigelcann555 Anytime mate always here :):)

[@TheSuperjoffen]

great stuff , im confused as to why not start with a scratch coat though? im novice cheers

[@macplastering]

Hi mate this is before that most times would only do it on brick especially old Belfast brick then scratch coat then top coat float coat ... have tonnes of videos on them stages to mate on channel well worth the look

[@juniourx2203]

Can you use a roller

[@macplastering]

@juniourx2203 It would be hardered to paint on for sure still work a bit with a roller or a brush but dasher is the best way

[@aaronquick6434]

Hi mark after some advice I’m going to render the back of a stone house in sand and cement scratch coat then a tyrolean finish any way one person recons not to use sand and cement personally ive seen people go over stone myself what’s your thoughts on this and what would you recommend thanks

[@macplastering]

lime guys say you should use lime to let the stone breath I have used cement with good outcomes, I think it depends where you are from like lime gets wet but dries out here we don't get much dry so my question is when would lime ever dry out something to think about . I was doing work for an old gentleman before we got talking turns out he was in the trade as a spark but attended plasterers when his work was slack he said they done a barn wall all stone in sand and cement and said if it was lime it would not have lasted he said it was still there 40 years on, at the other side I know a few lime guys say they have done things pout side with great results but also think its not so good and don't truly believe its great for here and better for France Spain Italy where thy get nice dry weather. most the stone i have went over was the builder and home owners choice came down to money, sand and cement is much cheaper..... also I was pricing a job again it was stone I asked the girl who owned the house lime or sand and cement no to lime her friends got it done and said it looked bad and was damp and Pelling , i do get a few lime guys on saying dont use cement on stone as if the stone will be destroyed and sometime brick they say the same but thing is brick falls apart with out sand and cement on it so that makes no sense as it was free to breath also there is larrson water proofers claim it lets air in but nit water and lets air out its breathable sorry i am not sure i have helped you very much here I do mean to do some test on this so we can re visit it every year and see so far i have had time to see how good of a bond sbr is I hope to upload that soon but the stone is still to be started

[@mattknox6443]

Hi fella great work as per , We have a block built slurry pit on a farm to re render . Its coat of cement is failing inside tank all falling off . What would you reccomend to recoat

[@macplastering]

Thank you matt mate sounds like a hard job u would need it emptied and power washed then possibly this mix on then scratch and float but the gasses and mostier might always be a problem damaging it over time

[@macplastering]

A few new videos coming live should be a nice watch :) This Sunday and next :) might be some of my best yet

[@Lemon-squeezer]

Alright mac my brother has had an extension on the back of house which is rendered in painted roughcast so the back wall is now roughcast ive plastered the extension out for him as im a internal plasterer but know Jack shit about rendering and never done it,his roughcast is rock solid and not going anywhere ive told him I'd rather hack it off but he wants it plastered over the knob head,or would a sbr slurry over the roughcast be ok for grip then bond and plaster over it or would you advise something completely different

[@macplastering]

Could screw and dab insulation boards on the ones for external rendering I have never done it myself but could be a good way to go over the dash, if you have to go over this mix would help for sure then scratch and float the bottom part i went over in the video is still solid but I bet in years to come it will be the 1st place to fail

[@ganeshingavale9842]

What is the cement ratio slurry plaster

[@macplastering]

I have it in the video buddy

[@Gkir1]

I done a scud coat today on some brick pillars and before hand i primed it and let the primer dry. Now the scud coat has dried it is powdery and not really stuck to the wall. Ratio was 3 sand 1 cement. Any advice

[@macplastering]

Sounds to weak a mix buddy could also be to wet a mix to much of an additive? I put sbr in my mix for certain jobs such as brick what all did you add?

[@Gkir1]

@@macplastering just plastaciser?

[@macplastering]

@Gkir1 how much? Agin it's not the ratio I would use the ratio on this video is stronger plus sbr added I think will have to rewatch as its not a mush for block but good as its old block.... another question was it a very hot day?

[@Molie085]

Can this be applied to a wall with the top 2 rows laid the same day?

[@macplastering]

It might be best let it set but I would think it can still be done without to much loss of streghth

[@danmurphy7338]

Also would you recommend wetting a brick wall with water or sbr for using your scud coat?

[@macplastering]

Yes a little wet wont do no harm again its all about the background and suction

[@SuoNagato]

Excellent work. Like. thank you. Greetings. Suo

[@macplastering]

Thanks for watching buddy have great Sunday

[@andyman2577]

Great vids Mac .After watching this vid was wondering if your mix would do as a base coat on say a dwarf wall ? Thanks for the time you spend making vids

[@macplastering]

I would think so Andy mate this method can also be done with a brush dabbed on giving a good key for the top coat or coats

[@macplastering]

I would think so Andy mate the mix i done can also be allied by brush and dapped on giving a nice texture that will give great key / grip for next coat

[@andyman2577]

@@macplastering Cheers Mac , will try today , never rendered before !

[@macplastering]

@@andyman2577 Its not easy but with the right tools and a little knowledge along with hard work I am sure you can achieve a finish your hap and proud of , we have on the channel a good few videos on how I render and finishing it might be helpful for you ?

[@andyman2577]

@@macplastering Tried your slurry mix and single coat and it worked a treat ! Im trying to keep thickness to a minimum and thought why put a coat on to scratch it when you could scratch wall with an angle gringer ?

[@MrChazzahc]

Story macs, would you ever scratch the whole wall over a scud b4 top coat? Or is it only necessary to scratch low points after scud and top coat over the whole wall?

[@macplastering]

Yes mate that what i did here on the next video and would usually do helps it build out and better for top coat

[@MrChazzahc]

@@macplastering sound big man, hoping to get rendering with the fine weather now Good hussle on the channel ya a solid crafter!

[@macplastering]

@@MrChazzahc cheers mate yes some great weather been doing wet dssh and bands might upload some on it thanks for watching and commenting mate your support is much appreciated

[@jasc6904]

Tin coat render system I think are the way forward

[@macplastering]

Might do some on the sample wall thee other longer wall is going to be done for demos for the most asked fro exterior finishes

[@danmurphy7338]

Hi ya mate. How do you judge how much water you add to all your different ratios on the different mixes?

[@macplastering]

Hi Dan mate great question one I thin deserves a video made for it to show/ talk about the ways I do that

[@danmurphy7338]

@@macplastering that would be brilliant for us newbies. I have a small ugly wall (pillars are so cockeyed) i was going to use one coat render until I watched one of your videos using battens, (brill idea mate). So I deffinately think a good scratch coat is needed but I was sure if a OCR would work. Tried googling and your videos are the closest I have come across to help. Thanks.

[@macplastering]

Glad they are helping mate and im always here in the comments but for sure this is a must for me to get made and might help a lot of the subscribers Yes some of my videos dont seem to do well as the are so directly about one thing in title but loads have some great info about other things and tips during them and at the end as i try to keep the best stuff for that :)

[@danmurphy7338]

@@macplastering honestly mate, they are brilliant, no complaints here. You go in depth in a lot of your videos so I cant fault you for that. Your work is brilliant too. Il give my ugly wall a go with some one coat render. Then when you have time to post up a video of the water part (coz that just baffles me lol), then I will be confident enough to do the side of my garage.

[@macplastering]

Thanks mate will try get that out in next few weeks will take a few editing days but should have the footage just need to talk the way I do it onto it :)

[@ss-gl1xo]

Hi mate I have an garage to render over lbc heaters, what is the best primer to use before scratch coat or is enough just to water down the wall? Cheers

[@macplastering]

Not sure what ibc heaters are mate ? is the walls clean block or brick ?

[@ss-gl1xo]

@@macplastering bricks mate

[@macplastering]

@@ss-gl1xo ok if this scud coating is not an option then I would probs paint sbr on in stages as i coat also would have a taste of sbr in mix it should bond well bear in mind sbr will set the gear up that little faster so might be best to mix an amount you can use quickish I like to work over the sbr just before it dries to allow both to set and bond together hope this makes sense mate ?

[@ss-gl1xo]

@@macplastering thank you mate Too many people say just wet the wall down before rendering

[@macplastering]

@@ss-gl1xo you could wet let it soak in then paint sbr , but best to test see what the suction is like if high suction that might be the best way to go but some bricks are smooth and low suction so wetting it would be a pain as your render coat will slide

[@marcsweeney3445]

Hi Mac, thanks for the video. Can I ask what was the name of the thing you used to flick the scud on the wall? And also, the names of the things you put in the water? Cheers, Marc

[@macplastering]

Refina Harling Trowel mate similar = amzn.to/3bTimRN

[@robertsythes6849]

Hi Mac, How much should you wet the wall before throwing the scud. Not much by the looks of it? Thanks for the videos, great to see local skill

[@macplastering]

Hi mate it all depends on background old block is hot so i did actually give this a good drink with hose think if its not in the video ive just forgot to record or add it in

[@danmurphy7338]

Mac what mix ratio did you use to fill out your wall with the battens? I need to do that on my wall of doom lol

[@macplastering]

Its on the channel mate hiw to mux scratch coat or 1st coat

[@rockyslack799]

Hi Mac,what's your ratio for your scud mix?good work by the way

[@macplastering]

Thank you brother I show it on the vid here - kzbin.info/www/bejne/hqnJkqqsf9Z2mc0 This is the mix i would use a lot now for scudding coat

[@anthonykenny1120]

Great job,, flick of the wrist,, I think that horse over the fench was scudded while eating your ground sheet lol 😃😃

[@macplastering]

Haha The horse got the 1st view :)

[@jasc6904]

U can use a render aid that u roller on no mess and manufacturers guarantee but each to there own every has there ways this is hopefully not a negative

[@markchambers9415]

render aid is so expensive.macs way is just s effective but a fraction of the cost.

[@macplastering]

I have used green and blue grit insides with good results but dont use them anymore as 2 ceilings failed and I was back at a house another guy did where the blue grit failed I know thats inside stuff but they guarantee them until something goes wrong as i did contact the company's but they wont take responsibility , they have way to many outs , didn't own the paint under the grit didn't own the plaster didn't own the plasterboard they tested the skim i did but it came back mixed and finished / thickness correct so it has to been the grit that failed as it it seem to act like a plaster replant , so the end of the story was i had to fix myself with 0 help from the makers... everything was done by the book and the back of the bag and buckets so if something goes wrong dont think they will have your back, I know rend aid is good but I could have also scratched straight on with sbr especially as this old walled had been well clean down but I have seen scud coat make walls that where ready to fall over tighten back up so i know the strength it can add and thats the main reason I wanted to do it here :) Thanks for the input buddy : )

[@macplastering]

Thanks mark man yes both ways would work but I am glad use plastererers and renderers have these options to weigh up :)

[@Scribe3168]

Scud Coat. 2 plastering sand, 1 cement, water with 1 cap SBR , 1 cap waterproof, 1 mortar mix ... correct?

[@macplastering]

Yes, correct mate for this one :)

[@Scribe3168]

@@macplastering I tried it today ... I didn’t have one of those trowels so I used a bucket trowel which seemed to fling the stuff on the wall but also up the wall 90 degrees next to it and all over the floor. I ended up using a stiff dustpan and brush brush, just dipping it in the mix and flicking it at the wall. It wasn’t so even so I run a straight edge over it, rubbed it a bit with a plastering trowel and then scratched it up like a base coat render. You got skills Mac!

[@macplastering]

@@Scribe3168 have seen guys use and old coal shovel for this and dashing works good this can also be painted on mate this is just the fastest and best way I think . What job are you doing mate ?

[@Scribe3168]

@@macplastering it’s those bricks I was talking about absorbing all the SBR. It’s the inside of the house but the outside wall. The walls Flemish bond so no cavity. This is the kitchen, I’ve bonded out other walls in the house and I’ve battened others to take insulated plasterboard. In the kitchen I’m not battening as it takes up space and the kitchen is a damp area. The walls are all cracked so I’ve been channeling in the epoxy bars and I thought your 2:1 mix thrown at the brickwork may be stabalising, help with and moisture through the bricks too. I was going to render, plaster and then tile. The walls aren’t plumb either so they need a lot of gear on them just to get them straight.

[@macplastering]

@@Scribe3168 Oh that all dose sound a lot of work mate glad the videos are helping you some mate, it should for sure stabilize it.

[@over50andfantabulous59]

I can get masks here. If you have a business address, I can mail you some blue paper ones. I just bought 2 yesterday. I can get more. There is a p.o. box under my videos where you can mail me your business address to. If you choose.@18:41: you made quick work covering that wall - great work.

[@macplastering]

Thanks for sure if I run low will drop you a message :) I do have a few but find i can move away so feel safe and never feel i am breathing it in but some jobs are must to use when inside or chipping and pulling of the old stuff Than you again for the support :)

[@georgemallon6608]

Mac, Nice to see the video of your "secret" recipe scud/ dash coat, but please add a list of Larson products and whatever else goes into the water, plus their suggested amounts. This would nicely clarify the recipe.

[@macplastering]

Glad you liked it mate thing is they vary from job to job and not always larson some high suction jobs might take more some less so I find it best to suggest to guys to do a test area and check results

[@surginichi7522]

So in plain english, can anyone write down what he has as the mixture. The video has too much noise and cant understand whats in them.

[@macplastering]

Must be my accent

[@everythingisrealrivers6582]

@@macplastering definitely your accent mate. you slurry words just like you slurry coat lol honestly though, what are the ingredients?

[@macplastering]

@@everythingisrealrivers6582 I will try get a new video on the mix alone to again show the ingredients in a shorter video but I do show the mix being done during this video if you dont want to wait mate

[@gavin_hill]

​@@everythingisrealrivers6582 The mix is: 2 parts plaster sand, 1 Part cement, 1 Part water (add to get right consistency) 2:1:1 in the water he adds 2small caps SBR, 1 Waterproofer & 2 large caps of mortar mix.

[@murph5951]

Hi mac 👍👍

[@macplastering]

Hi mate hope your doing well .Thanks for the Thumbs ups :):)

[@murph5951]

👍👍👍👍👍👍👍👍

[@georgeomalley6066]

Hope your 🎥 man had her Safety 😎 on, 😂

[@georgeomalley6066]

Who's the New employee with the Big 👂👂

[@fixit3108]

get yourself a camera stand. Let that lassie go and make the tea

[@macplastering]

I do but find it to slow movin and re setting it up while trying to work this is best way I for to show and work if this makes senses but the next coat is all tripod

[@sharonmcgonagle2018]

🇵🇹 Style yesa

[@macplastering]

Thanks for watching Sharon

[@sharonmcgonagle2018]

It's me mams phone fella bin skimming 20 years hopefully no rain tomoro doing a scratch coat

[@sharonmcgonagle2018]

Much graft on kid bang into the derby's at mo

[@macplastering]

Hope you got on well mate

[@bobbythrush4158]

Why the hell don’t you just use red grit ???

[@macplastering]

I have sand and cement so why waste time getting grit , I know the grits made for insides has failed bad in the past for me and others so doing what I know works and this is how to scud coat not how to grit coat

[@bobbythrush4158]

mac plastering well I would save you a scut coat mate .. less time less mess ! Always use the new bonding agents for my rendering an ones for my acrylic render try it you might be pleasantly surprised! An your right blue grit is pretty shitty stuff

[@macplastering]

No way to think red grit is superior to this this will add strength to the wall like i explained in the video a paint coat wont add no strength !!!

[@bobbythrush4158]

mac plastering you seen acrylic come off a wall yet ? Move with the times mate . You obviously don’t do any big contracting work wasting time like that

[@macplastering]

@@bobbythrush4158 I got 2 jobs fail with the green grit was a nightmare man and seen loads on others now such a pain to have to fix , I love sbr these days but this grit could have a great place over painted brick also , I agree on mess mate scud is so messy I find on some jobs sbr on wall and in mix or one or other to help bond instead of scud coating , had lots of guys ask me about scud and this wall needs as much strength so win win :) but yes might try get something with this grit in future videos

[@oftin_wong]

I need a translator

[@macplastering]

Anything else?

[@oftin_wong]

@@macplasteringha all good, been watching a lot of clips I'm rendering onto an old rendered wall that has this paint on it that I just cant remove ...its so stuck, I pressure cleaned it at 3000 PSI and removed all the white paint but this pink layer persists, i can see the render through it in part maybe 70% of the surface has the pink paint layer on it, it's quite a rough surface too. it's not lead paint I tested it. I figured I'll bond it with bond crete, I am a plasterer and also stonemason of sorts mainly limestone and brick. Thing is... I'm doing a fake limestone finish on it like the rest of the house ...I'm getting pretty good at it and pulling a mortar line into the render to make it look like stone So my splash coat has to be limestone coloured I was wondering if I should put crushed limestone into the splash coat as the fine aggragate componant, or just use the sharp yellow sand, lime and white cement as I've been doing all along I usually do two coats and utilise the thickness of it to create a fake stone look by eroding some if it away mechanically but I've never rendered onto a painted surface before. Just trying to collect some tips..its about 5 sq metres undercover from the weather. Hi from australia

[@macplastering]

Hi mate i would think the crush limestone should would be a small test would be good to be sure if going over is only option you could also key it up with a grinder before u start

[@oftin_wong]

@@macplastering hi, thanks. yes I actually purchased a multi toothed right angle diamond wheel for a grinder and ground that stuff off messy but it didnt take long Thanks for the advice

[@macplastering]

Nice yea crazy dusty