PART 2 FULL GARDEN ROOM BUILD How to build stud walls with OSB Sheathing and roof slope

Part 2 of our full build tutorial from our 4x5 Metre Garden Room project in Princes Risborough.

In this video we explain how to build walls with a fall for a sloped style roof, and also how to build walls square using OSB Sheathing.

Enjoy! Please like and subscribe and if you have any questions drop them in the comments and I will get back to you.

[woodbutcher]

You explained everything brilliantly, mate. Excellent video!

[ianhorner]

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

[TheNorthernmunky]

Great video and James made a cameo too, great work

[desertpoj]

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!

[TheDajoca]

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.

[TimothySmith-zo]

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

[markadams]

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?

[akhilvarghese]

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

[HazelAndrewsAcupuncture]

Thankyou for such a brilliant vid. I’m nearly 60, but I’m going to be attempting to build my own garden room this summer. I volunteer in cat rescue and need hospital/ emergency rescue space for street cats, so I’m building my own garden room. Is it ok if I ask you questions? Or do you work near Swindon, wilts?

[puradzhiev]

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?

[mattbutler]

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?

[ScottNicholson]

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!

[JB-ddqw]

Did you drill through the dpc? Does that break the barrier?

[tobysherring]

Interested to know why 5m not 4.8?
I thought I saw someone using 1200 sheathing recently which would be helpful to avoid the 20mm thing.

[oj]

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

[skutty]

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?

[simong]

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)

[LOakes-knbx]

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?

[garyhollywell]

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

[Hawksmere]

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?