Hi, thanks for the vid this is really helpful. interesting to read some of the comments below. I'm a garden designer and looking to specifiy ground screws for a garden room of 4.5x3.5. My main reasoning is there are trees nearby so digging out would wreck them I think. What I'm wondering is if there's an advantage or disadvantage to using ground screws in terms of the heat of the floor? ie does it need more or less insulation? I'm thinking less because the air pocket will be warmer then the concrete slab. Or maybe it would be concrete piles anyway, hmm?!?
Generally we use a floating timber floor so yes it’s above the ground. With a timber floor it’s extremely important to maintain the air gap to ensure the timber remains dry and doesn’t rot. The insulation levels are around the same just different construction techniques. Hope that helps 🤙😎
Lots of suppliers around if you Google them. The machine itself is around 6k and we buy groundscrews in quantities of 100 so I would say best to get a company to install them.
Utterly useless for my planned sips extension i have insufficient room for suspended floor if i include the 150mm legally required air gap i need a concrete floor. Also this could be useful for building over and very near to drains if a hole of sufficient size was bored first. This technology has the potential to be the only way to build extensions in the UK and save tons of Co2 but it needs to evolve.
As with any construction methods there’s pros and cons. You can get longer screws and they would have probably been okay if the ground conditions were suitable.
So last 2 weve built have been close to boundaries. Right next to fence posts full of concrete also hepworth super sleeve drain and tree roots . ? Waste of money cheaper to dig concrete pads or small piles there too expensive .
Will go through tree roots but ground needs to be assessed prior to installing, same as any job. Sometimes concrete is best I do agree! Bloody hard work though.
@@woodbridgegardenrooms when you say assessed what do you mean ? We've looked at using them a few times but every time I just think cost is too much . Regular size room 4x3 what is there 12 screws ? That's about £1500 ,concrete yourself plus digging out £250 plus abit more time depending on ground . For garden rooms of reg size I just think there too expensive now bigger ones maybe we build extensions as well if they can get these through building control then there a winner
@@jharris7407I mean if the ground is assessed to be rocky or lots of tree roots I would look to get a base done. So we put 20 of these in today for a 5x4m garden room. We were done by 11am. It was a 40m walk to the driveway so doing a dig out and concrete pour would have been horrendous in 25degree heat. They will pass regs if you get a pull test done on them and submit. It costs about £500 for this report but if soil is clay then each ground screw is usually good for about a tonne.
@@woodbridgegardenrooms Hi, may i ask why is that pull test is done on these? Isn't carrying capacity more important? Only thing i can see pulling these things is wind force to the building. But weight of the building and snow would force them down not up.
Hi, thanks for the vid this is really helpful. interesting to read some of the comments below.
I'm a garden designer and looking to specifiy ground screws for a garden room of 4.5x3.5. My main reasoning is there are trees nearby so digging out would wreck them I think.
What I'm wondering is if there's an advantage or disadvantage to using ground screws in terms of the heat of the floor? ie does it need more or less insulation? I'm thinking less because the air pocket will be warmer then the concrete slab. Or maybe it would be concrete piles anyway, hmm?!?
Generally we use a floating timber floor so yes it’s above the ground. With a timber floor it’s extremely important to maintain the air gap to ensure the timber remains dry and doesn’t rot. The insulation levels are around the same just different construction techniques. Hope that helps 🤙😎
Can this be used in very sandy soils? We've seen helical piles used here, but they go down 4 meters to get adequate torque spec.
Depends what’s going on them. Our garden rooms weigh between 2 and 8 tonne so just putting more in to spread the load is likely an option.
where do you get these from? are these usable for a pro diy'er?
Lots of suppliers around if you Google them. The machine itself is around 6k and we buy groundscrews in quantities of 100 so I would say best to get a company to install them.
I rented one of the machines for the equivalent of ~160 USD for a day.
I had zero experience and it turned out very well.
@@MisterBlueSkycan’t say I’ve seen any for hire in the UK yet but I haven’t looked too hard.
Utterly useless for my planned sips extension i have insufficient room for suspended floor if i include the 150mm legally required air gap i need a concrete floor.
Also this could be useful for building over and very near to drains if a hole of sufficient size was bored first.
This technology has the potential to be the only way to build extensions in the UK and save tons of Co2 but it needs to evolve.
As with any construction methods there’s pros and cons. You can get longer screws and they would have probably been okay if the ground conditions were suitable.
So last 2 weve built have been close to boundaries. Right next to fence posts full of concrete also hepworth super sleeve drain and tree roots . ? Waste of money cheaper to dig concrete pads or small piles there too expensive .
Will go through tree roots but ground needs to be assessed prior to installing, same as any job. Sometimes concrete is best I do agree! Bloody hard work though.
@@woodbridgegardenrooms when you say assessed what do you mean ? We've looked at using them a few times but every time I just think cost is too much . Regular size room 4x3 what is there 12 screws ? That's about £1500 ,concrete yourself plus digging out £250 plus abit more time depending on ground . For garden rooms of reg size I just think there too expensive now bigger ones maybe we build extensions as well if they can get these through building control then there a winner
@@jharris7407I mean if the ground is assessed to be rocky or lots of tree roots I would look to get a base done. So we put 20 of these in today for a 5x4m garden room. We were done by 11am. It was a 40m walk to the driveway so doing a dig out and concrete pour would have been horrendous in 25degree heat. They will pass regs if you get a pull test done on them and submit. It costs about £500 for this report but if soil is clay then each ground screw is usually good for about a tonne.
@@woodbridgegardenrooms Hi, may i ask why is that pull test is done on these? Isn't carrying capacity more important? Only thing i can see pulling these things is wind force to the building. But weight of the building and snow would force them down not up.