Thank you for this video. Ive been looking for a while for a vid that gives an in depth explanation on the hows and whats of a render mix and this vid is by far the best and most thorough 👍
Enjoy your vids Alex,nice and clear Tip when mixing ,add the lime to the sand first, It breaks the lime up quickly and reduces the time it’s in powder form which you’ll know is not pleasant to breathe in.
Really enjoying this series and your channel mate. I've got too use to just doing internal work over the years and therefore are lacking confidence in external. I really need to get stuck into some sand and cement next year when the weather changes. It's be nice to hear about how you cope with the changes in weather like rain when rendering a house
Thanks for the comment Ian. Tbh, being in the UK rendering in the summer is a lottery. Sometimes you win, sometimes you don’t. We got caught out several times this year. My suggestion would be book in a couple of weeks of skimming between renders (especially if they are complete houses, just so you have something you can fall back on incase you get rained off. If you stack one render after another, if you get a rain delay it pushes all the other jobs on. Also allow 25% extra on your time for these delays as they rarely run to the time scale you think. And include that in the price. Hope this helps.
Alex, you might want to try using quicklime. Quicklime expands 2.5 times after slake. A bag of quicklime is slightly cheaper than a bag of hydrated lime. But you get 2.5 times more lime. Also, it steams when you're mixing it in so it makes you look cool and it makes the mortar a little warm. In my opinion it makes the mortar a bit stickier, nicer to work with. It's not a massive difference, but the biggest difference is the cost. Cheers
Would you put a full bag of cement in topcoat aswell? Im using this as a basecoat with silicine render going over the topcoat might give the lime a miss not sure how would react to silicone tnin coat render. Do you recommend alex?
How heavy are the bags of cement? What is the volume of the black buckets? I use 18litre buckets and 20kg bags. For scratch coat I do 2.5 buckets to a 20kg bag and about 1 litre bucket of hydrated lime per bucket of sand. For my top coat I use 2 buckets of sand per 20kg bag of cement and 2 scoops if Synlime (synthetic lime). I was always told to go richer in cement for each successive coat. I am in Canada and use this for parging, which is like a render on a wire mesh over foam for the basement portion of the house. What is your opinion on my mix? Thanks for the video I really enjoyed it!
Thanks for your comment. You will likely need more than 2 buckets of water in the mix unless the sand is already wet. Just start with that 2 buckets and add water as you mix to get the right consistency
Hi Alex I like your video this a old one but my old man taught me plastering and he wory in England it was always 3 to1 first coat finish coat with lime on sand and cement if he be still here he be 91
Brilliant video and very informative. As an aside (going off script now):Has anybody told you, you have a face for cinema. You should try acting. I could easily see you in Lock, Stock and 2 smoking barrels. Get in touch with Guy Ritchie! Thanks for the tips and the gauging advice.
I wish all builders knew that the render should be weaker than the substrate. Some of the internal render in my home is hard as diamonds. You can't knock it off without destroying the bricks. Hard means more brittle and soft means more flexible and less likely to crack with movement.
HI Alex. Im just about to render my extension and came across your videos. Very informative. On the mix i can see you have said the mixes for normal brick and thermalites but what would you recommend for new 7nm blocks. Thanks.
Thanks for the tips Alex, just wondering if you'd advise using the same additives and subcoat of Rendagrip and SBR on a single skin, brick garage conversion that's been tanked on the inside?
I've got the dewalt mixer and too can say it's a beast, brilliant tool, always went with eibenstock but the dewalt is as good if not better, hell of a mixer
Hi i learnt 35 years ago as a DIYer how to plaster from the plasterer that was working for me learning to do reveals first. Now i have had an extension built i have nervously begun to plaster again. I am now looking to render the extension and noticed you said about the mix on light weight thermal blocks which my builder has used, what are my options as i am now aware the render could crack. thanks
Hello mate, quick question... I have decided to give my garden wall a go before I take on the back of my house to build a bit of confidence. As the wall is small (3x0.8m) and the weather is cold I was thinking of just using a slurry cost instead of render mix. Think that's a decent idea as render mix might be over the top?
The best sand I’ve ever used is called “Home sand” it’s jet black and dredged from the Bristol Channel! The spreaders down the West Country use it ! It’s unreal! I spray monochuche so don’t use sand and cement anymore but you guys should try it - it closes in amazing!
Hi Alex, hope alls well. Just re-watching this vid again and I'm wondering how much SBR do you add to each gauge? Looking forward to doing the back of my house but tbh now worried about still being out there in the dark haha 😬
You don’t need a lot of sbr. Maybe 1/4 of what you put in for the waterproofer. I wouldn’t be looking to render this time of year. It’s too risky with the weather. March- October is the best time.
When you say building sand are you referring to Pit sand (very fine) because in Bristol, building sand is Holm sand and bags of plastering sand from Travis Perkins is just washed Holm sand?. Great channel by the way, very good content, thanks for taking time to make the vids👍
Find your comments on waterproofer interesting ... Myself only use the bare minimum just enough to make the material workable excessive amounts make for a weaker finish never sets up as hard ! Test sometime yourself scratch coat a small panel somewhere to your usual method then do a small panel with less will require a little more mixing to get to a nice consistency for working leave them for a few days and you will see what I mean just try scratching either panel with a steel nail or something you'll see the panel with excessive waterproofer is much softer .. I am a plasterer have never mixed render with a drill myself I use a diesel mixer ... Have recently bought a DeWalt flexvolt paddle mixer tho just for knocking up skim can't wait to get it dirty 🙂 ! Where did you get the quick release for it? What brand is it ? Any link ?
@@AlexMorleyPlastering thanks for getting back to me appreciate it ! .. standard paddle that came on it is quiet big already about 160 diameter by 200 high .. is really worth changing?
Is this the krend mix, plastering application one I've tempted to use it but not sure how it is I'm guna be using silicone thincoat ontop does it dry in decent time ?
If your useing buckets 3:1:1sand cement lime ,that fab is bollocks ,sand and cement is porous so that's a waste ,all it does is slow down the set time.
You should realize that all products are not available all over the world. promoting specific suppliers and products is pointless to the majority of your viewers. sand is sand, additives are additives. rather use international standard recommendations in your videos.
the more waterproofer u use can weaken the mix your mixes are way too weak .the wall needs to have suction u should never kill it completely .u need to be doing 3 buckets to one bucket level of cement. Your wisking render come on bro get a mixer i bet u get loads of hair line cracks after a year ....where your lime too 😢
Lol just as bad when a farmer says there are animals on a farm lol I always thought mun a big yellow barrell that you mix cement in was to was the dog 🐕 thoroughly during the summer 🏝️ time lol rinse and dry , drink some water lad before you chat you won't have such a dry mouth 👄 lol
If you would like to support the channel you can make a donation HERE👇
www.buymeacoffee.com/alexmorley
Thank you for this video. Ive been looking for a while for a vid that gives an in depth explanation on the hows and whats of a render mix and this vid is by far the best and most thorough 👍
Best video's on youtube for rendering by far, thankyou.
Excellent presentation. Thanks
Great Video, super clear !
Who remembers the old diesel or petrol mixers? Massive drum full of muck started by the handle you’d spin around.
Haha ye I used to have to get out the way if I didn't get the handle out before it shot out at me
Still have
Great info mate 👍
Nice one mate, very helpful ! Top man🤜🤛
Enjoy your vids Alex,nice and clear
Tip when mixing ,add the lime to the sand first,
It breaks the lime up quickly and reduces the time it’s in powder form which you’ll know is not pleasant to breathe in.
your explanation is very good
Great video
Really enjoying this series and your channel mate. I've got too use to just doing internal work over the years and therefore are lacking confidence in external. I really need to get stuck into some sand and cement next year when the weather changes. It's be nice to hear about how you cope with the changes in weather like rain when rendering a house
Thanks for the comment Ian. Tbh, being in the UK rendering in the summer is a lottery. Sometimes you win, sometimes you don’t. We got caught out several times this year.
My suggestion would be book in a couple of weeks of skimming between renders (especially if they are complete houses, just so you have something you can fall back on incase you get rained off.
If you stack one render after another, if you get a rain delay it pushes all the other jobs on.
Also allow 25% extra on your time for these delays as they rarely run to the time scale you think. And include that in the price.
Hope this helps.
I like this guy
What coverage do you get with 5-1 double gauge lime mix mate great vid
You mentioned 2 buckets of water . Does the 2nd bucket also contain the additives or just water?
Alex, you might want to try using quicklime. Quicklime expands 2.5 times after slake. A bag of quicklime is slightly cheaper than a bag of hydrated lime. But you get 2.5 times more lime. Also, it steams when you're mixing it in so it makes you look cool and it makes the mortar a little warm. In my opinion it makes the mortar a bit stickier, nicer to work with. It's not a massive difference, but the biggest difference is the cost. Cheers
Like the video very informative
Would you put a full bag of cement in topcoat aswell? Im using this as a basecoat with silicine render going over the topcoat might give the lime a miss not sure how would react to silicone tnin coat render. Do you recommend alex?
Good vid mate .. get yourself a bigger tub . Mine does half a jumbo sack in one mix . Cuts out all that mixing and colour matching . 👍👍
Do you evere do a nap sand and cement finish
How heavy are the bags of cement? What is the volume of the black buckets? I use 18litre buckets and 20kg bags. For scratch coat I do 2.5 buckets to a 20kg bag and about 1 litre bucket of hydrated lime per bucket of sand. For my top coat I use 2 buckets of sand per 20kg bag of cement and 2 scoops if Synlime (synthetic lime). I was always told to go richer in cement for each successive coat. I am in Canada and use this for parging, which is like a render on a wire mesh over foam for the basement portion of the house. What is your opinion on my mix? Thanks for the video I really enjoyed it!
As you do five plus the lime do you add more than the two buckets of water or does the lime make the difference.
Al.
Thanks for your comment. You will likely need more than 2 buckets of water in the mix unless the sand is already wet. Just start with that 2 buckets and add water as you mix to get the right consistency
Hi Alex I like your video this a old one but my old man taught me plastering and he wory in England it was always 3 to1 first coat finish coat with lime on sand and cement if he be still here he be 91
6:00 I'm glad it's not just our town that ruins video making with bloody sirens !!!!!
Brilliant video and very informative.
As an aside (going off script now):Has anybody told you, you have a face for cinema. You should try acting. I could easily see you in Lock, Stock and 2 smoking barrels. Get in touch with Guy Ritchie! Thanks for the tips and the gauging advice.
I wish all builders knew that the render should be weaker than the substrate. Some of the internal render in my home is hard as diamonds. You can't knock it off without destroying the bricks. Hard means more brittle and soft means more flexible and less likely to crack with movement.
HI Alex. Im just about to render my extension and came across your videos. Very informative.
On the mix i can see you have said the mixes for normal brick and thermalites but what would you recommend for new 7nm blocks. Thanks.
4 sand 1 cement scratch
5 sand 1 cement 1/2 Hydrated lime top coat
In Jamaica concrete is a bonding agent can it be use when I am doing the rendering after the roughcsating the blocks
Thanks for the tips Alex, just wondering if you'd advise using the same additives and subcoat of Rendagrip and SBR on a single skin, brick garage conversion that's been tanked on the inside?
I've got the dewalt mixer and too can say it's a beast, brilliant tool, always went with eibenstock but the dewalt is as good if not better, hell of a mixer
What model is the mixer please
Interesting. I've always been told not to use any chemicals in the scratch coat.
Have you tried the Freeflo?
Hi i learnt 35 years ago as a DIYer how to plaster from the plasterer that was working for me learning to do reveals first. Now i have had an extension built i have nervously begun to plaster again. I am now looking to render the extension and noticed you said about the mix on light weight thermal blocks which my builder has used, what are my options as i am now aware the render could crack. thanks
Hi Alan
You need to use a weaker gauge of render. 6 sand on the scratch, 7 on the top coat. And bed render mesh in the scratch coat.
good sand x 6 . 1 x cement and 1 x lime . best top coat ever
Hi my renderer 1st coat used 4 to 1 sand and cement with sbr+waterproofer then 2nd coat 5 to 1 with sbr and no waterproofer is this mix correct?
Hello mate, quick question... I have decided to give my garden wall a go before I take on the back of my house to build a bit of confidence. As the wall is small (3x0.8m) and the weather is cold I was thinking of just using a slurry cost instead of render mix. Think that's a decent idea as render mix might be over the top?
Hi Ian if it’s just standard brick I would use SBR the day your going to render it.
Slurry coat if the wall isn’t in great condition.
Hi Ian if it’s just standard brick I would use SBR the day your going to render it.
Slurry coat if the wall isn’t in great condition.
Thanks Alex appreciate the reply, will go with a coat of SBR then 👍🏼
How long do you leave between the scratch coat and the top coat
Do u ever add fibreglass strands to the mix to help prevent cracking
Rarely. The power float stops 95% of any cracking.
@@AlexMorleyPlastering there’s no substitute for hands on knowledge cheers
The best sand I’ve ever used is called “Home sand” it’s jet black and dredged from the Bristol Channel! The spreaders down the West Country use it ! It’s unreal! I spray monochuche so don’t use sand and cement anymore but you guys should try it - it closes in amazing!
Subbed brotha 👊🏽
How many square feet were you able to cover with the first batch you mixed?
Great video Alex , as per usual. What mix would you recommend going straight on to Thermal Blocks.
For thermal blocks I would go with 6 Sand on the scratch and 7 on the top.
Hi Alex, hope alls well. Just re-watching this vid again and I'm wondering how much SBR do you add to each gauge? Looking forward to doing the back of my house but tbh now worried about still being out there in the dark haha 😬
You don’t need a lot of sbr. Maybe 1/4 of what you put in for the waterproofer. I wouldn’t be looking to render this time of year. It’s too risky with the weather. March- October is the best time.
When you say building sand are you referring to Pit sand (very fine) because in Bristol, building sand is Holm sand and bags of plastering sand from Travis Perkins is just washed Holm sand?. Great channel by the way, very good content, thanks for taking time to make the vids👍
Why are you putting lime in with cement?
hiya, do you add the sbr and waterproofer in the the second bucket of water ?
thanks
On the scratch coat yes. As it’s only gauged out for 10L of water.
How many bags of 1 ton sand would you use on a house this size?
I think we used about 4 from memory.
I Always ad waterproofer on finish coat. If not, it leaves the render too gritty
Find your comments on waterproofer interesting ... Myself only use the bare minimum just enough to make the material workable excessive amounts make for a weaker finish never sets up as hard ! Test sometime yourself scratch coat a small panel somewhere to your usual method then do a small panel with less will require a little more mixing to get to a nice consistency for working leave them for a few days and you will see what I mean just try scratching either panel with a steel nail or something you'll see the panel with excessive waterproofer is much softer .. I am a plasterer have never mixed render with a drill myself I use a diesel mixer ... Have recently bought a DeWalt flexvolt paddle mixer tho just for knocking up skim can't wait to get it dirty 🙂 ! Where did you get the quick release for it? What brand is it ? Any link ?
Adapter
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-
-
www.refina.co.uk/mixing/mixing-paddles-adapters/quick-change-paddle-connector.html
I’d buy the 200 paddle as well. Makes a
Massive difference.
-
-
-
Paddle
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-
-
www.refina.co.uk/mixing/mixing-paddles-adapters/mr3-spiral-paddles.html#/133-paddle_size-200mm_8
@@AlexMorleyPlastering thanks for getting back to me appreciate it ! .. standard paddle that came on it is quiet big already about 160 diameter by 200 high .. is really worth changing?
Anyway thanks again hope you enjoy the holiday season take care 👍
Definitely.
Having a wider circumstance/diameter means the paddle spins faster. Mixes it faster, especially dot and dab, and cement render
do u put water proofer in your top coat mate? so many people saying different things its hard to know who’s right or wrong
What is sbr?
Styrene butadiene rubber
When's the next vid coming 😆
I’m editing it right now. It’s been a busy couple of weeks.
👍👍👍💪🏻💪🏻💪🏻🔥
I don't bother with sand and cement anymore. Just use k mix one coat baged render. Lovely to use i won't go back to sand and cement now
Is this the krend mix, plastering application one I've tempted to use it but not sure how it is I'm guna be using silicone thincoat ontop does it dry in decent time ?
Also use the same manufacturer on cement on whatever project your doing as all brands different shades.
Dont fit in mixer cause your over loading the mixer wisking it puts way too much air in the mix what also can cause cracking
Alex... Just look at the mess you have made of that front door. I hope you cleaned that up...!!
Bon Crete
Dude not a blade off mortar put hanging on only all jazz chat c Mon man where da guns and motor board teaboy 2 suger s love ta
No way is there 2 buckets of cement in a bag
🤣🤣🤣🤣🤣🤣
If your useing buckets 3:1:1sand cement lime ,that fab is bollocks ,sand and cement is porous so that's a waste ,all it does is slow down the set time.
You should realize that all products are not available all over the world. promoting specific suppliers and products is pointless to the majority of your viewers. sand is sand, additives are additives. rather use international standard recommendations in your videos.
the more waterproofer u use can weaken the mix your mixes are way too weak .the wall needs to have suction u should never kill it completely .u need to be doing 3 buckets to one bucket level of cement. Your wisking render come on bro get a mixer i bet u get loads of hair line cracks after a year ....where your lime too 😢
⁹😮😅
😢 8 to 1 thats so weak and u chug water proof in 😂 cant measure it in cut a bottle use that .....
8 to 2
Lol just as bad when a farmer says there are animals on a farm lol I always thought mun a big yellow barrell that you mix cement in was to was the dog 🐕 thoroughly during the summer 🏝️ time lol rinse and dry , drink some water lad before you chat you won't have such a dry mouth 👄 lol
Don't teach when you are learning
Just a random question, do tou always dress like that to go to work?