Paving Slab Base for a Greenhouse
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- čas přidán 1. 08. 2024
- In preparation for building a greenhouse, I'm going to show you how I contructed the paving slab base which will form the floor of the greenhouse.
The greenhouse I'll be building is a Palram Harmony 6' x 8' model but this type of base is ideal for other greenhouses, lightweight sheds and temporary outdoor buildings.
Materials used:
450x450mm paving slabs
General Purpose Cement
Sharp Sand
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The greenhouse I built on this is:
Palram Harmony 6x8
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And comment to let me know what you think and what else you'd like to see.
Thanks for watching!
#greenhouse #diy
Disclaimer: The information is provided for general informational and educational purposes only and is not a substitute for professional advice. Accordingly, before taking any actions based upon such information, we encourage you to consult with the appropriate professionals. - Jak na to + styl
I have been looking for a video like this one for a few days! Thank you for showing me exactly how to do this! I truly appreciate it!
Thank you. Glad it was helpful
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Really useful, thank you for taking the time to make this vid! Hope you’re enjoying your greenhouse :-) cheers!
Thansk for the vid, im doing a basic patio so there will be even less weight than your idea and all these vids with gravel underneath just seem so overkill but glad to hear your slabs are still in place ... even if my ones move slightly its not impossible to lift it and add more sand/cement surely!
Thankyou Sir Video Looks Good For me to with COPD
I'd go a bit deeper with the aggregate sure - but in principle for a fairly lightweight greenhouse or shed once the weight is spread it will likely be fine. Projects like this are a good excuse to dispose of old hardcore laying around... Helps make for a more stable structure and a tidier garden!
Good job! Thanks!
I think for a basic shed/greenhouse with a life expectancy over 5 years you need a slightly better base than this. You don't need 10cm hardcore whackered, you're not building a driveway! But you will need probably somewhere between 3-5cm of compacted MOT under a dry mix like this for it to last 5-10 years min. If you're renting though or moving in the next few years this will do.
This was really helpful! Thank you!
Excellent videos Kyle, and very helpful as I have bought the same greenhouse. I have added questions further down requesting details of quantities of sand. cement used.
Weed control fabric maybe also ...... 🤔... 4 years since you did this .... I'd really be interested to know how it's doing now?
Dan Andrews is a gardener.
great vid
Thanks. Enjoyed making it
interesting points ,if anyone else trying to find out backyard storage sheds plans try *WoodBlueprints. Com* Ive heard some decent things about it and my colleague got cool success with it.
This how I intend on doing our shed base, has your base held up OK? Thanks for the video btw
Thank you... A basic video on a shed base... I am renting and not trying to go crazy on a shed base...
Everyone got something to say negatively but where your video showing otherwise?
Thanks. It's held up well over a bad winter so I think you'll have no issue with that method
I liked your video,will it be safe to use cement on vegetable garden? Can I have a greenhouse without the slab base?
How do you judge how deep to dig?
Great help, me and my son want to get a shed and i didn't have a clue how to build a base, what type of sand did you use pls? Would appreciate it if you can get back to me, thanks, J
Nice job. Did you consider weed barrier and sand/cement mix for the grout for a nice seal?
Weeds haven't been an issue and wanted to keep the gaps for water run away
Wow! Can u do my shed. That's great..
What was the name of the cement tiles you used. The size in cm
Hi mate. Can you answer some questions for me?
1. How many bags of sand/ cement mix did you use?
2. What was the weight of each bag?
3. What volume of concrete did each bag produce?
Basically I'm trying to determine roughly how thick your concrete base is. I'm working on something similar. Did this hold up?
Thanks for any help. Cheers.
I'm making the same base for the 10' version of the same greenhouse. This is the 1st time if tried anything like this so an answer to question 1 would be really helpful. How many bags of sand & cement did you use please?
I would also like to know the answers to these questions?
A third request for how many bags used. Kyle showed 3 bags of sand and one of cement in the video. Based on this I have bought 3 x 25kg bags of sharp sand and one 25kg bag of cement. Based on a 6 to 1 ratio, I should only need half of the cement. A second question. I had to clear gravel to make space for the slabs. The ground underneath is not totally even and is covered by material to inhibit weeds. Can I use the gravel as an aggregate underneath the sand cement mix when I level each slab? I hope that makes sense!
how come you are not wetting the mix isn't just sand good enough in this case, as cements just pretty much dust in comparison to sand.
Kyle, someone suggested cementing edging around the outside of the slabs to prevent slippage - is this overkill?
I've not noticed any slippage on my one. Since the edge ones are not walked on and I'm growing grass around it I just wanted soil.
I think the slippage will occur when you lay slabs on sharp sand only that's why you need to secure the edges with cement. But in this video, the gentleman used 6 parts sand and 1 part cement, which is good enough to make the slabs adher to it without slippingaway.
I'd be worried about that. Bit of a sub base and a go with a garden roller at least I think. I mean, your putting a greenhouse on top of it. You want to get a few years out it. Unless you're building the greenhouse to anchor into the grass around the slabs and can always redo them if you need to I wouldn't trust it
How did you determine how much sand you needed to purchase?
I just used a few bags until it seemed enough. It was fairly cheap so buying a bit extra is probably worth it just in case
Not being negative but how is this foundation going to be secure. I’m trying to build a foundation for a garden shed and ive seen all these videos of foundations with aggregate layer followed by a mix of sharp sand/cement followed by the slabs.
The ground I built this on was already very compacted and rocky and I wasn't able to obtain aggregate when I did this so decided just on the sand/cement mix. It will depend on what your ground is like already.
No sub base ..... no mention of run off either ..... wonder if it’s still in place ???
@@danskizza8293 It is and the water runs off perfectly when the plants inside are hosed. The greenhouse is completely stable too, as is the base.
ep that’s great to hear. Everything you did seemed very thorough so I’m sure it will last 👍🏼
Great video! Thanks a lot.
Hi How thick is the sand and cement bsse
Just a few mm. Enough to keep the slabs in place. Almost a year later its still solid
I would dig deeper than that, at least 6" of gravel base.
It's for a shed or greenhouse base, so it doesn't need to be very solid.
@@michaeldominic3952 depends where you are in northern canada its going to be uneven next spring. It also depends on your soil if its clay and does not drain well you do need deeper, if you want it to remain straight
No it needs deeper, I would recommend at least half a meter of aggregate and then at least 1 foot of sand and cement mixed 3 parts Sand to 1 part cement and then of top of that 3 layers of tiles with cement between them all, and a week to dry inbetween each layer. Then once that’s done get some gypsies in to tarmac 30cm of tarmac onto it, then above that 2 more layers of tiles and some sand and cement on the corners. Then on top of that a pressure treated wooden base and then a metal shed base. Then finally a teak or oak flooring. Then once you’ve done that can put some marble tiles on top. Then your shed is ready to be constructed with a a few more pressure treated wooden bases on top, and a damp proof course, then two more layers of oak planks and a few railway sleepers. It should last at least 4 to 5 years.
The guy put the slabs together at the start and thay were put together in the finsh no gap no spacers thats the way he done it.
Not enough sand and cement footing in my mind.
Should be aggregate down first, whacked down level, then sand and cement.
@@xMeta4x
Yeah good point.
Worth doing worth it right to last
I give it two years max. A good thickness of well compacted aggregate is a must, 100mm minimum, laid in two layers and whacked both times. Then your sand and cement, I'd use 50mm. Flaunch the sides with a slightly stronger mix to stop the aggregate etc from migrating. This would not support a quality, heavy greenhouse with toughed glass (up to 450kg) plus all the contents, especially once you start sloshing water around inside etc.
100mm +50mm.... insanity for a garden greehouse. 450kg? grow up!
It’s going to be fine. This isn’t a base for a big structure. It’s just a greenhouse.
Only for a Greenhouse... hardly building a castle on it
No it needs deeper, I would recommend at least half a meter of aggregate and then at least 1 foot of sand and cement mixed 3 parts Sand to 1 part cement and then of top of that 3 layers of tiles with cement between them all, and a week to dry inbetween each layer. Then once that’s done get some gypsies in to tarmac 30cm of tarmac onto it, then above that 2 more layers of tiles and some sand and cement on the corners. Then on top of that a pressure treated wooden base and then a metal shed base. Then finally a teak or oak flooring. Then once you’ve done that can put some marble tiles on top. Then your shed is ready to be constructed with a a few more pressure treated wooden bases on top, and a damp proof course, then two more layers of oak planks and a few railway sleepers. It should last at least 4 to 5 years.
You need hard-core this is wrong advice