This is by far the best rear extension on you tube definitely subscribed !! How deep did you have to have the concrete for the foundations ? And from ground level to floor level what was the height of that ? My one I'm going to do is 25cm from ground level to floor level in the house so would I have to dig out earth for the hardcore to go below ground level ? As I've got it right it be for me Screed 50mm Insulation 100 mm Concrete 100 mm Sand 50 mm Hardcore 150mm Total 450mm So 200mm would have to go below ground level ? Is that right . ?
Thank you!! Our foundations had to be very deep to 1.8m because of the sewage pipe that ran through our proposed build. This was so the weight of the building didn’t put any load or pressure on the pipe which could damage it. I think my floor is roughly 25cm as well, as long as you have a minimum of 15cm from ground level up to damp proof course. Going by your measurements, yes 200mm would have to be below ground level. Also I noticed you didn’t mention it but just in case, don’t forget the DPM between your sand and concrete slab which should lap the DPC. And the the top of your footings should be below ground level too as the minimum distance between the cavity concrete fill and DPC is 225mm. Hope your project goes well and just let me know if you have any other questions! 😁
you've just got yourself a new subscriber!! i'm looking to build a 6m extension very similar to yours as well.... got the planning permission and building reg drawings all done... was in the process of finding a firm to do the build but they are litrally asking for 4x the budget i have... so i gotta get out there and do it myself lol did you have any previous experience of doing this type of work? tbh i'm a little scared but i'm also very careful how i do things "check twice, cut once" where do you get service pipes/wiring drawings from? any tips will be appreciated 🙂
Thanks! Glad to hear you’ve got past the first hurdle! My dad is a handyman and he’s got prior experience of various parts of the build that we did but we still had to learn and research everything for building regs and correct building practices just in case. Do you have any previous experience or are good with DIY? I definitely recommend trying to do it yourself if you’re fully aware of everything involved and are comfortable. It’ll be tiring but rewarding plus your building inspector will also be there if you have any specific questions about what your building needs. We had plan of the service pipes from the land registry search that was done when we bought the house so I reckon you can request a search for your house too, otherwise try contacting your sewage/drains company. Our one had a manhole so it was easy to figure out how far behind the house it was and how deep it went. Are you aware of any drains where you want your extension to be? Ask me anything, I’m happy to help! 😁
I really admired your work you do everything thump up for you I was wondering if you give me an advise to start home extension jobs what is the best thing to do and is there is any books you recommended God bless
Thank you for the kind words 😊 To start I would advise on looking at your local regulations and finding out if the project you want to do requires planning permission. Then you should consult an architect who can draw up plans that you can follow. Usually the architect will also have structural engineer calculations to make sure that building will be structurally sound if the plans and building work are done properly. I personally didn’t use any books because a lot of the information you can find online and even in CZcams videos. I would definitely recommend doing a lot of research to get a good idea of the amount of work involved because a project no matter how big is a lot of work. Hope that helps. God bless!
@@aminbenkura4035 you’re welcome! I’m blessed to be a blessing 🙏🏼😌 Hope everything goes well with your project and feel free to ask if you have any other questions. God bless 🙌🏼
Hi palad I'm in the process of doing a similar size build to yours. Just wondering as I have Seen it a few times now is that you filled the trench nearly completely to the top don't you only need minimum 200mm thick slab then can build up from there? Only interested as I'm not sure to do the same or build up also what was the cost of the concrete? Just so have a rough idea what to budget 👍
There’s different types of foundation construction, I think the one you are thinking of is called strip foundation. We decided on a trench fill/deep strip foundation because our trench was quite deep and it would have been more dangerous/difficult to build up from a strip foundation as opposed to just filling the trench with concrete. I would definitely advise on consulting an architect though as they can advise you on the most appropriate which will not only be safer but be more likely to pass building regs. The cost of the concrete and pump was roughly £1,700 as it was really deep
No it wasn’t needed, this was C30 grade concrete which was almost 2 meters deep and 600mm wide, that was already overkill so any more reinforcement would just be wasted money. It would be more useful in bigger constructions and where the footings are not as deep 😊
Yes ofcourse but before you look at what you need I highly recommend that you find out if there are any service lines such as pipes and drains running through or near where you want to build. And also to consider consulting a local architect to draw up building plans with engineer calculations for you to submit for building regs. This will make the whole process a lot easier as you’re more or less following instructions that you know will comply with your local building regs. And definitely familiarize yourself with your local building regs. For foundations we wanted to save money by digging it ourselves instead of hiring a digger and the materials you’ll need will depend on what type of ground and how deep you plan to dig but I’ll list what we used to start and lay foundations. • Jackhammer • Wheelbarrow • Grinder (to cut rebar in floor slabs) • Shovels • Aligning/Digging bar (to loosen up ground making digging easier) • Ready mixed concrete • OSB, timber (to shore trench walls as we dug deep, you may not need this depending on how deep you dig) Also word of advice, try not to disturb the ground at the bottom of the trench so that your footings have solid foundations. Let me know if you have any other questions!
@@CrazyCezaRone There is a lot of different materials and tools needed for a project like this but ultimately it will vary from project to project. As a beginner, the best thing I can advise is to consult an architect who will specify exactly what you need for your build. I say this because stuff like insulation for walls and roofs will be specific for the thermal requirements of your building based on its size and construction type i.e. warm/cold roof or cavity wall etc. Other things like the size of joists will depend on your structural engineer calcs. For now, you can start by checking your local building regulations to see what type of extension you can make with or without planning permission and then plan as if you have already started your project. The keys stages of a build are somewhat split into the videos that I made but I can summarize them below: Planning/building Regs application • Foundation • Walls up to DPC then floor slab • Walls up to roof base/support height • Roof incl. waterproofing e.g. GRP • Doors and Windows • Get an electrician and plumber in to discuss work required before you cover everything up. • Electric and plumbing work to be done as when needed keeping in mind it may be buried under floors/walls/ ceiling which is why it’s important to discuss this before continuing. • Floor insulation then screed • Drylining and Flooring • Finishing touches Finally, start doing a lot of research now. Doing a project this size yourself requires a lot of commitment and doing the research will test your commitment and how prepared you are to do this.
One of the requirements of building over sewer pipes is that there should be no load or pressure on the pipe from the building or it could cause the pipe to break because of the weight of the building. To overcome this, if the bottom of the foundation is the same level as the sewer pipe and there is nothing out above the pipe itself, then the force/weight of the building is directed away from the top of the pipe. This also means that a suitable concrete lintel must be used to bridge the gap between the foundation. If you look back at my video you’ll see that we did not pour concrete in the gap above the sewer pipe. And in part 2, you’ll see where we put concrete lintel above that gap and resting on the foundations on either side.
This is by far the best rear extension on you tube definitely subscribed !!
How deep did you have to have the concrete for the foundations ?
And from ground level to floor level what was the height of that ?
My one I'm going to do is 25cm from ground level to floor level in the house so would I have to dig out earth for the hardcore to go below ground level ?
As I've got it right it be for me
Screed 50mm
Insulation 100 mm
Concrete 100 mm
Sand 50 mm
Hardcore 150mm
Total 450mm
So 200mm would have to go below ground level ? Is that right . ?
Thank you!! Our foundations had to be very deep to 1.8m because of the sewage pipe that ran through our proposed build. This was so the weight of the building didn’t put any load or pressure on the pipe which could damage it.
I think my floor is roughly 25cm as well, as long as you have a minimum of 15cm from ground level up to damp proof course.
Going by your measurements, yes 200mm would have to be below ground level. Also I noticed you didn’t mention it but just in case, don’t forget the DPM between your sand and concrete slab which should lap the DPC. And the the top of your footings should be below ground level too as the minimum distance between the cavity concrete fill and DPC is 225mm.
Hope your project goes well and just let me know if you have any other questions! 😁
you've just got yourself a new subscriber!! i'm looking to build a 6m extension very similar to yours as well.... got the planning permission and building reg drawings all done... was in the process of finding a firm to do the build but they are litrally asking for 4x the budget i have... so i gotta get out there and do it myself lol
did you have any previous experience of doing this type of work? tbh i'm a little scared but i'm also very careful how i do things "check twice, cut once"
where do you get service pipes/wiring drawings from?
any tips will be appreciated 🙂
Thanks! Glad to hear you’ve got past the first hurdle!
My dad is a handyman and he’s got prior experience of various parts of the build that we did but we still had to learn and research everything for building regs and correct building practices just in case. Do you have any previous experience or are good with DIY?
I definitely recommend trying to do it yourself if you’re fully aware of everything involved and are comfortable. It’ll be tiring but rewarding plus your building inspector will also be there if you have any specific questions about what your building needs.
We had plan of the service pipes from the land registry search that was done when we bought the house so I reckon you can request a search for your house too, otherwise try contacting your sewage/drains company. Our one had a manhole so it was easy to figure out how far behind the house it was and how deep it went. Are you aware of any drains where you want your extension to be?
Ask me anything, I’m happy to help! 😁
Hello where is this? Uk or USA
Hi, it’s in the UK
I really admired your work you do everything thump up for you
I was wondering if you give me an advise to start home extension jobs what is the best thing to do and is there is any books you recommended God bless
Thank you for the kind words 😊
To start I would advise on looking at your local regulations and finding out if the project you want to do requires planning permission. Then you should consult an architect who can draw up plans that you can follow. Usually the architect will also have structural engineer calculations to make sure that building will be structurally sound if the plans and building work are done properly.
I personally didn’t use any books because a lot of the information you can find online and even in CZcams videos. I would definitely recommend doing a lot of research to get a good idea of the amount of work involved because a project no matter how big is a lot of work. Hope that helps. God bless!
@@TheMJPalad
Thank you MJ Palad For this valuable information May Allah Bless you and Guide you , All the best
@@aminbenkura4035 you’re welcome! I’m blessed to be a blessing 🙏🏼😌 Hope everything goes well with your project and feel free to ask if you have any other questions. God bless 🙌🏼
Hi MJ great build what was the rough cost to build it yourself. Your dad has good skills in thinking of doing one.
Hi Ray, thank you! I’m going to upload a video of the cost breakdown very soon, I hope it helps with your project :)
Hi palad I'm in the process of doing a similar size build to yours. Just wondering as I have Seen it a few times now is that you filled the trench nearly completely to the top don't you only need minimum 200mm thick slab then can build up from there? Only interested as I'm not sure to do the same or build up also what was the cost of the concrete? Just so have a rough idea what to budget 👍
There’s different types of foundation construction, I think the one you are thinking of is called strip foundation. We decided on a trench fill/deep strip foundation because our trench was quite deep and it would have been more dangerous/difficult to build up from a strip foundation as opposed to just filling the trench with concrete.
I would definitely advise on consulting an architect though as they can advise you on the most appropriate which will not only be safer but be more likely to pass building regs.
The cost of the concrete and pump was roughly £1,700 as it was really deep
No reo bar/mesh inside to support the concrete?
No it wasn’t needed, this was C30 grade concrete which was almost 2 meters deep and 600mm wide, that was already overkill so any more reinforcement would just be wasted money. It would be more useful in bigger constructions and where the footings are not as deep 😊
Hello, can you make a more accurate list of materials purchased? I would like to do it too and I am a beginner in something like that
Yes ofcourse but before you look at what you need I highly recommend that you find out if there are any service lines such as pipes and drains running through or near where you want to build. And also to consider consulting a local architect to draw up building plans with engineer calculations for you to submit for building regs. This will make the whole process a lot easier as you’re more or less following instructions that you know will comply with your local building regs. And definitely familiarize yourself with your local building regs.
For foundations we wanted to save money by digging it ourselves instead of hiring a digger and the materials you’ll need will depend on what type of ground and how deep you plan to dig but I’ll list what we used to start and lay foundations.
• Jackhammer
• Wheelbarrow
• Grinder (to cut rebar in floor slabs)
• Shovels
• Aligning/Digging bar (to loosen up ground making digging easier)
• Ready mixed concrete
• OSB, timber (to shore trench walls as we dug deep, you may not need this depending on how deep you dig)
Also word of advice, try not to disturb the ground at the bottom of the trench so that your footings have solid foundations. Let me know if you have any other questions!
@@TheMJPalad You can make a more detailed list until the end from the foundation to the roof with everything you used for insulation and rest
@@CrazyCezaRone There is a lot of different materials and tools needed for a project like this but ultimately it will vary from project to project. As a beginner, the best thing I can advise is to consult an architect who will specify exactly what you need for your build.
I say this because stuff like insulation for walls and roofs will be specific for the thermal requirements of your building based on its size and construction type i.e. warm/cold roof or cavity wall etc. Other things like the size of joists will depend on your structural engineer calcs.
For now, you can start by checking your local building regulations to see what type of extension you can make with or without planning permission and then plan as if you have already started your project.
The keys stages of a build are somewhat split into the videos that I made but I can summarize them below:
Planning/building Regs application
• Foundation
• Walls up to DPC then floor slab
• Walls up to roof base/support height
• Roof incl. waterproofing e.g. GRP
• Doors and Windows
• Get an electrician and plumber in to discuss work required before you cover everything up.
• Electric and plumbing work to be done as when needed keeping in mind it may be buried under floors/walls/ ceiling which is why it’s important to discuss this before continuing.
• Floor insulation then screed
• Drylining and Flooring
• Finishing touches
Finally, start doing a lot of research now. Doing a project this size yourself requires a lot of commitment and doing the research will test your commitment and how prepared you are to do this.
Hi MJ
You said you had to dig 1.8 m deep because of the sewer can you please clarify this point as I didn’t understand it
Kind regards
One of the requirements of building over sewer pipes is that there should be no load or pressure on the pipe from the building or it could cause the pipe to break because of the weight of the building. To overcome this, if the bottom of the foundation is the same level as the sewer pipe and there is nothing out above the pipe itself, then the force/weight of the building is directed away from the top of the pipe.
This also means that a suitable concrete lintel must be used to bridge the gap between the foundation. If you look back at my video you’ll see that we did not pour concrete in the gap above the sewer pipe. And in part 2, you’ll see where we put concrete lintel above that gap and resting on the foundations on either side.