How to sand and cement render concrete block wall 1st coat scratch coat DIY
ฝัง
- เผยแพร่เมื่อ 1 มิ.ย. 2018
- Hi everyone this is me sand and cement coating this wall and giving some tips on the way i do it ,this is the scratch coat that is the base coat for the top coat of cement render I will put more videos in this description for mixing cement render and more ....
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Plastering chat Answering some sand n cement rendering questions 🔴 LIVE CHAT = th-cam.com/users/macplasteringserviceslive
macplastering h
hi Francis Benton
Do you ever take on an apprentice mac?
Tried to years ago with no luck @@michaelrodgers7742
Great videos mate, love it, building my own house here in donegal, plasterd my shed last year from watching your videos, having a crack at the house this year.
Glad they are helping you man :):) if you where closer I would have dropped in :)
You decorated that wall with cement to perfection despite those scorching temperatures. Definitely worthy of an ice cream after that job :)
Thank you my friend i been eating too much ice cream these days haha :):)
HI Mac , you always make a job look so easy , great work , liked, have a great new week :)ms
Thnaks mate this is the easy part to :)
Thankyou Mac, great helpful vid, cheers
Hey duck man glad it was helpful and thanks for watching and the support buddy :)
Great technique!
Thank you this is the easy part the hard parts come later but I try to make my prep work as tidy as i can to make life easy later .... thanks for watching :) have a great Sunday
Can’t beat that time of year outside cracking on with that 👍
You know it buddy I got roasted haha hope your on some nice handy outside jobs :) have a great Sunday mate
Wonderful! Thumb up!
thanks my friend :)
Hello friend! Looks fun to do...but looks tired too! Nice job!
Have a nice time my friend......Monica
It can be fun I love most when the whole job finished and have look at my accomplishments very satisfying Thanks for watching hope you have great Sunday
Thank you so much my friend......Monica
great job:)
Thank you my Artistic friend :) have a great day :)
Nice video man
Cheers mate Thanks for watching and hope you are getting nice sun like this too :)
I’m 3 weeks into plastering course at college nice vid mate
Thanks buddy have a good few rendering videos now if you want to have a look them hope the videos help you some on your journey of learning we learn something new everyday :)
Thanks again for the support mate
Wow nice
Thank you Maliha :)
Fantastic work!! Like 30 :D Have a great day!
thank you my friend hope your week is going great
Making that gear look lightweight! Top job
Hi man hows it going? Haha yes I do find skimming that bit lighter to work but when the sun is out its nice to work outside :) Thanks for watching mate
@@macplastering you're welcome. I'm good thanks mate, staying safe and all that haha.
@@TheNomadicTrader Same here mate life has turned into a juggling act but the show must go on :) as long as we keep us and family's as safe as possible is the main thing :)
YES SIR! "Get er done!"
Get it while its HOT haha thanks for watching mate have a great Sunday
nice :)
Thanks for watching hope your having a great day :):)
Nice bud
Hey my man happy Sunday to ya :) Thanks for Stopping have to love outside in the sun ,:)
You're so smart and hard working
Thank you Norma means a lot to me hope your days going great :):)
Great job :-) I like how you consider the diffrent moisture levels for top and bottom with ground water and sun exposure, I can see that making a really big diffrence in long term strength of bonding to to the block i must admit :-D Thanks for the share, I can really see your technique here, like it would be hard to replicate to your extent as you make it look so easy but it gives a great idea for folk like myself who are still early learners of the trade :-) My best my friend. Paul.
the many walls i have done tells me not to wet the bottom to much or i will be waiting for hours to rub it up , hard to get all these details in with 5mins
you did cover a lot of ground but the info really was handy combined with seeing your technique, it may take us watchers longer say to do it and we might not get it bob-on but with the explanation there is no reason we couldn't have a good go and hope for good results with the help of your walk through :-) the pointers are much appreciated!
MAC 👌👍
Thanks for watching Murph man have a great Sunny Sunday :)
'hanks.
Any time brother :)
Great job thanks for sharing Mac ! Did you use SBr prior to applying render ? And did you use mesh on your scratch coat ?
I've built similar garden wall /flower bed recently (all constructed of breeze blocks) and was wondering if sbr / mesh is any good on new build walls? Also did u add any placticiser to your sand /cement mix?
I wouldnt go with mesh but sbr will be good but still not relay needed for new work if you wanted you could do an over kill on it by sbr in the mix and fibres thing would be solid
Super fantastic work !!! You are so fast :)
wil have to try and sow down to show what i doing more I just get caught up in the job :) have a super Sunday :)
Good quality video Mac, what ratio was ur scratch coat
Hi mate typically 3 to 1 sand and cement gona have to do a quick live stream tonight getting a few questions on it
Lovely job 👍
What ratio sand/ cement do you use for scratch coat and finish coat?
Hi mate thank you for watching most times I do 3 to 1 then 4 to 1 top coat have a good few mixing videos showing in detail and explaining the additives and why im using ect if you fancy a look on the channel :)
For exterior block walls can I just roller on a thin coat of sand/cement plaster in one go? I know it’ll be all textured but just want to cover up the ugly blocks on a long small 2ft wall?
Might be hard to keep it looking tidy tgat way but could possibly still work
Very nice👍🏼 Please, for concrete wall plastering, how many square meters of surface area will a 50kg bag of cement cover on average (outside and inside)?
Hi cheers for watching mate , can i ask what depth and whats ratios would you need and finish ? as these will all take diffrent amounts
@@macplasteringThank you. I am a novice at building and trying to assess the approximate number of 50kg bags of cement needed to plaster a total surface area of 1,270 sq meters. Thickness/depth will be a minimum of 2 cm. I don't understand ratio. Once I can assess the number of ciment bags (50kg each), I can better estimate cost.
Sand will be provided. Thank you in advance for your assistance.
This video should help you mate - th-cam.com/video/vc6iBirvvKQ/w-d-xo.html
if not get in small amount do a small area then multiply what you have used by the 1,270 sqm and you'll have answer
If you give your scratch comb a wiggle you'll get better vertical crack resistance
but water can catch there and pop render
Hi do you have a video on the actual mix ie plasticiser sand cement sbr etc..
Yes mate a few on the channel on mixes
You’re a good hard worker buddy 😊😘 kissy
I do try to work hard but I always try to make it as easy as i can haha I try to work smart use my Brain so the body can last longer plastering is a tough job ... but got to love outside in the sun ... happy Sunny Sunday to you my friend :)
macplastering that’s good my friend hope you have a good Sunday too 😊
I wonder if the other side of the wall needs damp-proof process before you do rendering on another side?
I did both sides but as it is going to be back filled no doubt will always have some mostoire against it
@@macplasteringthanks. my retaining wall had no damp proof course before back filled, and I wonder if I have the front side of the retaining wall rendered, how long would it last? I am very concerned whether rendering will do any good to the retaining wall in this case.
if its just block it will look better but you can also drill some holes in to allow water easy escape routes so there is no build up behind it ?
Yes lad long time no see...hi did you put any waterproofing in the mix on the scratch coat what's the ground being hired behind The Wall would it make any difference to put something cheers big lad
seen this wall not to long ago looks good still a year on but these retaining walls get it hard from water , I for sure would have put water proffer in both coats and cant remember if the back is done tbh , dude where you been so much rendering videos out recent LOL
@@macplastering been keepin a low profile lad from i win the lottery lol same kind of wee job am doin with the ground higher on the other side and was kind of worried about the water comin though on to the painted side. So waterproofing in both coats happy days..must get me finger out and get a look at all the new vids... shes gettin cold now lad you all inside work or outside at the minute
@@bootsmclaughlin1438 Youve won the lotto hope i am invited to plaster the mansion you build :):) yes buddy I would put some in both coat but being said it might be good to skip it on the 1st coat if you want to get rubbed in the cold cold weather , believe it or not have some of both coming in but would rather stay inside have a bad cold atm
@@macplastering was just goin to put first coat on scratch it and let it sit for a few days before I can get back to finish coat and its to be dry the mara believe it or not lol
@@bootsmclaughlin1438 Dry almost whats that mean LOL sweet man go for it will you wet it for top coat or it not big ?
Hi Mac, hope you're well. If possible would you mind to advise please:
1. Is scud coat required for this fence wall?
2. For scratch coat is better sharp sand?
3. Is better to add lime for a scratch coat or no need ?
4. How much sbr should I add to mixture?
Thanks a million for that
New videos on it all coming in a few weeks time mate
Thanks Mac for replying. I need to do my fence next week and not sure about this points I listed.
@@krzysztofjastrzebski1919 when you say fence is it made from brick or ?
Concrete blocks
ok Sorry just when we say fence here its wooden ...
Ok so to answer you
if new clean fresh blocks I 3 to 1 scratch over no seed for lime or even sbr I put some water proofer in and plasticiser no to much as seen on mixing videos such as th-cam.com/video/Tsw-t8mwLRI/w-d-xo.html
Then top coat is 4 to 1 with around the same amount of additives = th-cam.com/video/Rddi80rA6u0/w-d-xo.html
Again if old walls i would either paint sbr on pure and add some to mix or scud coat the wall to help bond and strengthen wall have loads of this coming up in coming weeks brother :)
more videos explaining these
How to mix and apply scud coat = th-cam.com/video/PxfawvJqCck/w-d-xo.html
SBR for over paint = th-cam.com/video/ChkDQRp0Ei8/w-d-xo.html
sbr to help bond to old brick = th-cam.com/video/ThcIIDGN08Q/w-d-xo.html
So there is tones of things in those videos to help you out and if you need to drop a comment on them and can explain more or help more there
if the cinder blocks are coerced, do you sand them down first? before apply treatment
Do you mean corroded ? (coerced)
Did you add a primer like SBR?
So long ago this one it is very possible if I was doing it today I would recommend a little in aswell as waterproofer
Great Job, what kind of mix did you use? and would the same mix work on an interior wall?
Yes mate would use similar for inside but would most likely no need sbr or water proffer in it you can use 3 to 1 4 to 1 or 5 to 1 but a 3 to 1 or 4 to 1 would e my choice for inside work have a few videos on other mixes and how i mix on the channel your more than welcome to have a look around and new videos Ever Sunday :) Thanks again for the comment buddy :)
What about the damp course? Or doesn't it matter with it being a wall. Thanks
Hi Billy Wont matter mate all walls if where being rendered to the floor will be the same as this buddy have a few more rendering vids coming out in these weeks Thanks for watching and hope your week is great
Nice day for it mucks
For sure Hope you lads are Getting it as nice :):) Have a great Sunday :)
macplastering sure when the sun is out we are all happy and long may it last.... hi what kind of finish goes of slower have a big wall to do.. all plaster board am using multi finish blue one at the minute. and I think it goes off a little bit quick for me was just looking to know what I could do to slow down or what other finish I could use that has a slower dry in time and should I put a bit of pva on the broads first cheers mucks
Do you have any information on ratios for airtec blocks I can't find anything anywhere. I am panicking that they will blow with a to strong a mix
Are they the ones that are high suction and can be cut with a hand saw?
@@macplastering it is mate. I actually just went for it with a 5 sand , 1 cement and waterproofer and I second coated it 6 sand, 1 lime and 1 cement and plasticiser. Internal work on my own house. Up to now no cracking and it has been on a week, so touch wood it stays strong. I've never had to do them before and there is very little information on rendering them. Keep up the videos, there awesome
@@jameselliott5436 Sounds hopeful then mate :) hope it stays on for you 1st time I came across them wasted like 20 litres of pva on one wall thing was still drying like crazy skimmed next day it also set fast even after soaking wall down, my tactic now would be scud coat with sbr and a good taste of water proffer next day then 4 to 1 float and skim next day after that done a few liek that killed suction seen guys priming them and hitting on hard wall then skimming same day bt they sad it was still hard going to get it on and finished as setting fast
Would you ever scud a wall like this first, or when would you scud a block wall? tks
Have a video on scudding a wall similar but older the main reason was age and to make it a stronger wall witch a good scud coat will strengthen a wall so much its crazy... the video is on the channel if you wanna have a look mixes and all mate
A few new videos coming live should be a nice watch :) This Sunday and next :) might be some of my best yet
what sand should i use for render?
Hi buddy here we use clean plastering sand it is a type of sharp sand but finer
Can you put lime based plasters over concrete render?
the only time I have done anything like that would be k rend over a sand and cement scratch coat whats the lime based render called ? or is it just a sand and lime mix ?
@@macplastering slaked lime putty, or for interiors, marmarino, lime and marble dust based
Marmarino I think would be best on a skimmed wall ,with the primer 1st , lime putty probs best on old brick and stone work to plug the deep holes , not sure it would be good over cement render though
Did they render it to hide the really bad brickwork?
I have rendered worse :) but it sure did make this wall look much better you are right :)
Will the salts in the wall cause any problems?
I buddy I have seen this was a few time from it was rendered and looks great can see any salts coming through but thats not to say they wont get to the surface at some point they happen from damp and drying and damp and drying this being a retaining wall might always have this type of issue this has been done over 2 years and looks pretty good still so fingers crossed it stays that ways :)
Cheers for the reply mate good job on the wall my retaining block wall need plastering few of the boys hesitant because of the salts. Top man Cheers
@@iwanrees3395 Anytime mate if I can help I will :) My thoughts are it will look way better rendered even if the salts come through some compared to just block with salts hope it gets on well for you mate :)
What is the mix?
usually 3 to 1 then 4 to 1 top coat have a few mixing videos on the channel might be some help mate
But what is he applying? How about 😢a formula
th-cam.com/play/PLDpySD0F7BfIvoRVELA1NG86OEZMEqe0y.html&si=3iH0alxjajNAh_6x all you need to know for 1st coat if doing similar wall
More videos on top coat and more th-cam.com/play/PLDpySD0F7BfLkuJi6qo8GW1hKSfMJ5JkF.html&si=_qkqtt-a433RsKFG
Hi mate,
Couple of questions for ya pal.
When u watered down the walls, is it not best to use PVA bond on the walls instead???
Also, is there something called lime plaster or lime rendering??? Is that used for outside rendering??? I thought lime plaster/render was a breathable render rather sand and cement.
What is the ratio mix to your render?? Just normal building sand???
Much appreciated,
Mozzer.
Hello my friend happy Sunday to you I will make a video tonight answer all these questions as they are great questions will do a live stream on it for ya mate so hit that bell to be notified :)
answered all these questions here buddy = th-cam.com/users/macplasteringserviceslive
@@macplastering link dosen't work....🙁
Wish you was local, just had a quote for 2.5k for a small raised bed in the garden 😂
where are you in the world mate ?
@@macplastering Nottinghamshire
@@openyoureyes4326 for that price ill get the boat over :) sounds a big cost for a flower box please tell me he was supplying , was it the only price mate ?
@@macplastering he showed up and seen the house and company car and thought he could pull a fast one. Am getting someone who did some work for a friend to give me a price. It's only a flower bed 😂
@@openyoureyes4326 Haha I remember doing a job for a lets be honest multi millionaires I just charged my normal rates the girls was so happy said everyone just looks ate the house and adds on but in the end I got a lot more work for being honest
What's the ratio of the mix
3 to 1 mate I have a long video on ratios on the channel :)
No way this is nothing to do with old school rendering.
I will strongly disagree with you he dose say about it being an *old school video* multiple times in the video description and title main *question* is did you enjoy the video or not? The next *question* is why are you watching it what are you needing to learn ? and the last *question* is have you had a good *Christmas* my friend ?
@@macplastering I was looking and I was found.
th-cam.com/video/DMKGkucAl6A/w-d-xo.html
This is old school natural lime plaster for 100 year. I was on your channel by coincidence. Nothing against you. Case closed.
@@tatum6727 Oh i see youtube sent you to here :) not to much diffrent is a good video that one thanks my friend
shame about the blockwork..
looks good with the render all on now :)
@@macplastering may I infer that you were applying aesthetics to someone else's 'unconventional' blockwork.. lol
Haha I like that mate :):) and worst about it this is good block compared to some