Great video. Simple way to work out small angles, i.e. less than 10 degrees is the 1:60 rule. 1mm drop at 60mm = 1 degree. 10cm at 6 metres = 100mm at 6000mm = 1/60 = 1 degree. 5cm at 3.0m = 50/3000= 100/6000 =1/60 = 1 degree. So, 80mm drop over 4 metres = 80/4000 = 120/6000 (multiplied both sides by 1.5 to get a multiple of 60 on the right) =1.2/60 = 1.2 degrees. Seems complicated but look at it the other way around: What yo actually want is a 1 degree drop. So you want 1mm per 60mm. So just divide your length by 60 and and you’ve got your one degree drop. 4 metres = 4000 mm. 4000/60 = 66.7 mm drop for one degree or 133.3 mm for 2 degrees. Probably best to round it up to 70 or 80 and you’re in the ball park but slightly over your 1 degree. Once you’re practiced at it you’ll be able get the right drop for 1 degree in an instant in your head. 6.0 metres and you want a 1.5 degree drop, 150mm. 3 metres is obviously half of that: 75mm. 1 degree is 100 mm for 6 metres. Now isn’t it easy? 4 metres and you want a 1 degree slope. 4/6 (or 2/3) of 100mm = 67 mm, rounded as you like. 3 metres is 3/6 (or 1/2j of 100mm = 50 mm. 1 metre is 1/6 of 100 mm = 16.7 mm per metre. Your 20mm per metre is perfect at 1.2 degrees. The 1/60 rule used to be taught to every nautical/aeronautical pilot/navigator. For small angles it is incredibly accurate and easy. Fabulous video and great teaching style btw!

You explained everything brilliantly, mate. Excellent video!

Excellent vid and really well explained. Thank you. I see the same methods used to build sheds and can't help but think that we're maybe over engineering them? My old (inherited) 12x8 shed has been up for at least 20 years and the uprights and rafters are 2"x1", set at 900 centers. Even the expensive online sheds, seem to only use 1.5" to 2" studs, instead of 2" x 4"s every 16". Anyway. Great video and nice job.

Great work, great video, thank you for sharing and showing how it is done. Looking forward to the next episode.

Great video and James made a cameo too, great work

great work. excellent

Its looking great!

this is a great video that is very informative, keep making them your subs will grow! it might be good to include a bit at the beginning with all the tools needed and people can order them using your affiliate code for a win/win

For the measuring out studwork at 24/25 minutes, after setting the first stud in dead centre, I'd probably get a block and cut it down to 355mm to create a gauge. What's your thoughts?? Also In your other video with the secret room, you build the side walls square then cut an infill to match the slope vs the setting the heights on the studs here. What do you feel is quicker?

Do you not need any noggins on the uprights? Amazing videos by the way, it puts me in a false sense of security as you make it look so simple 😆, I think I could do this 🤣

Great video, and sorry if I'm being a moron but could you point me to the video where you explain cutting the windows into the side walls? I'm planning a side window myself so I'd be keen to see your process. Many thanks!

Excellent videos guys, thank you so much! Just a quick question and I know there are a lot of opinions out there.. do you normally use OSB 3 or 4 and what thickness do you use for the walls and roof?

"Quickly"had s strong hint

Loving the videos, going to embark on a very similar 5.4x 4m build in the spring. Do you have a list of materials (quantities) for planning and budgeting purposes? Thanks Tim

Great video, could you please let me know how to mitigate any damp as the sole plate screwed into the concrete breaks the DPC ?

great collection of clips. I intend to build my own garden room. It will be quite close to a fence on one side. Any issues wrapping, battening and cladding this one side while horizontal, before fixing in place?

New subscriber here after coming across your part 3 video. Looking forward to watching your other videos. Question from an amateur: once you've squared up the edges of your timber, doesn't that reduce/remove pressure treatment from those edges? (I appreciate this could be true of when you make any cut but I've seen advice that suggests treating all cut edges. This sounds like overkill but I'd imagine it would be helpful to have all bottom ends of the vertical studs to be factory treated)

Hi. this is really clear. Thanks. I want to do something similar but am worried the timber along the bottom will rot as not able to breathe. Is that something I need to worry about and, if so, is there a way to prevent it?

I'm building something very similar at the moment. I have run out of money for cladding so I was just going to leave the OSB board as the only outside wall and treat it with some kind of wood preservative, some insulation Rockwall on the inside and plasterboard. Would this be a recommended course of action?

Thanks great vids. Any recommendation on the 100mm base plate screws and washers. Also would you pop any silicone in whole as going through dpc or doesn’t matter?

Hi mate, quick question…I’m doing a 7metre roof, if I took off a few mms all the way down per stud, would the weight not push toward the back? Or is that a silly question?

Would you consider Concrete screws to fix to the slab or are screws and plugs a cheaper option?

What timber sizes do you use for walls and ceiling timbers? Going to get meself a 12x 14 footer knocked up this summer. Finding your videos really helpful! Cheers 🍻

What supplier do you tend to use for your Timber & OSB?

Hi buddy. Just wanted to ask you, is it OK to use 11mm osb board on roof? On top of 5x2 joint up. Thanks

Why don't you leave a 2-3mm expansion gap between the OSB sheathing?

For the Sides and back 4x2. Do you use CLS or C16?

What is the largest build allowed under permitted development if you have no boundary restrictions? i.e. on a large plot of land.

What thickness osb are you using for the walls?

How are you building that close to the boundary with a roughly 20m2 outbuilding made of combustible material? 🤔🤔

Have you made the concrete slab to the exact size of the building or is it slightly bigger?

is 1 degree pitch suitable?

Are you using C16 or C24

Ware did you get your tape measure from

That's 20metre square and your less than 1 metre to the boundary is that not an issue

How do you calculate the materials required for the build without causing too much waste?

Not insulating the floor?

What is confusing me is every other video/company I watch frame, insulate and osb their floor before then creating the walls on top. You do the walls first. Why?

What make is it

You are working with imperial boards, which ply and osb are, you set your studs at 16 inch centres, instead of cutting 20mm of every sheet to suit 400mm centres, time is money pal😜

Did this need planning permission?

To many have jumped on doing garden rooms.

Rubbish ,