Garden Room Workshop: Part 9. Flat roof structure

Part 9 of a video series about how to self-build a timber-framed garden room office (aka tiny house)/wood workshop in the UK.
This video covers cold roof vs warm roof, firring strips and roof joists.

The purpose of this video series is to provide all the information required for viewers to build their own garden room rather than just a montage of the building work. It took me months of research to learn everything in these videos so I hope to save people time and money.
The videos are a mix of theory and footage of the build including all the mistakes I made along the way. I am not a builder or tradesman, just a keen DIY-er with some basic tools. Everyone can do this!
In the longer term, I hope to turn this channel into a community for garden room self-builders and to eventually evolve into a woodworking projects channel - the real purpose of my garden room!

Garden room ideas: workshop, office, games room, cinema room, art studio, music studio, yoga retreat, spare bedroom, annexe or run a home business such as yoga classes or hair salon.

Tools used:
Circular saw
Mitre saw
Hammer
Pencil
Clamps
Speed square
Ladders
Tarpaulin
Safety: gloves, eye-wear, ear protection, dust mask

Materials used:
225 x 47mm C24 timber x 6metres
Screws 100mm
Nails 100mm
Square twist nails 30mm

Trada span tables:

Kingspan U-value calculator:

Good websites to check prices for materials :

Music:

[marelo]

You know what mate, I ve been waiting for the builder to finish the roof for ages and you inspired my to finish it myself, I am just gonna do it!

[mariafhp]

Thank you for this video Ali . I am self building garden shed alone and was struggling with how to keep the long facia board in place, screwing a bit of wood at each end is great . 🤗

[Devvspot]

Of all the videos on building a shed, yours is the best one. I

[alasdairmackenzie]

This couldn't be better timing! Thanks to Keith Brown for putting me onto your series of vids. I'm in the throes of planning an extension to my own 12' X 10' shed. Going to add - subject to planning (I live in a conservation village in the North West of Scotland) - another 8 feet (20' X 10'). Your vids have been very, very helpful. Thank you so much. Hope the rest of the build goes well. Best aye!!

[nazamosey]

These Videos are Incredible .Seriously. It's very technical, informative and educational. Hate looking at Actors all the time with their make up. These type of videos are 100%
Perfect. Best video on YT by far. As a learner I can now attempt my new roof

[twwanderer]

Stunning build, you should be proud of yourself for it (and doing it solo). Love the theory bits and explaining it all really clearly.

[stephenderby]

This is an amazing resource for a keen DIYer such as myself. I was pretty worried about getting the right pitch of my flat roof in my then you tell us about firring strips! I have never heard of these before but they have completely solved my problem. The gift that keeps on giving! 😂👍🏼

[BAHATI]

What a superb detailed series of videos. Theory necessary and explained to perfection. Keep up the good work and thanks for taking the time to produce the videos.

[Goorney]

The question of whether or not to use sloped joists is an interesting one. I'm currently building a garage and using CAD will help provide me with accurate dimensions when cutting the studs.

[michaelburton]

Thanks for the explanation Ali, it's really helpful as I'm building a home office atm for a client.

[JoeGP]

subbed, glad to see you finally got the voiceover audio levels right.

[laneyweb]

Just reading/watching after Keith mentioned your build. Very impressive planning, build and especially well presented videos. The information and time you take to explain not just the choice you made but other options for context is so well put together. I'm in the middle of my garden workshop build (much smaller and a little less engineered than yours) and very happy with how it's going but knowing how much work it is without videoing it all, well done. I have help/advice from friends as I got too so your solo build is impressive. Cheers for taking the time.

[chiyhfj]

Fantastic set of videos, I've been looking for something just like this for ages. Can't wait for the next updates!

[wandaarganbright]

I so love you choice of music in these videos!

[simonharwood]

Really good! Thanks for taking the time to film edit and post. Very useful

[mudbone]

Amazing. This is exactly what I'm doing over the coming weeks and without your videos I would almost certainly have fucked it up. Feeling much more confident about it now thanks :D

[simdog]

Brilliant, well articulated and with good camera coverage. Very enjoyable series of videos.

[Mark_]

Outstanding workmanship. If not a little to precise for what I need but I've certainly got a better understanding of setting out my new build... 16x12.. especially looking forward to the weather proofing stages
Great work

[vikingofengland]

Once again, top work and well though out. Been planning my man cave build for ages and you once again have validated a lot of decisions I have made. I am the same as you, not a builder and this will be the first time I have ever done a build like this.

[sumeetsharma]

Brilliant video mate! Really appreciate you taking the time to explain it all! This series is both very helpful and insightful!