Garden Room Workshop: Part 9. Flat roof structure
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- Опубліковано 27 чер 2024
- Find the full series playlist here: bit.ly/2BiLSyC
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.
🌍My website - www.alidymock.com
📸Instagram - / alidymock
💌 Email - hello@alidymock.com
Tools used:
Circular saw
Mitre saw
Impact driver: www.screwfix.com/p/erbauer-er...
Hammer
Tape measure: www.screwfix.com/p/stanley-ty...
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
Angle brackets: www.screwfix.com/p/sabrefix-h...
Square twist nails 30mm
Trada span tables:
www.trada.co.uk/ad-hoc/span-t...
Kingspan U-value calculator:
www.uvalue-calculator.co.uk/c...
Good websites to check prices for materials :
www.selcobw.com/
www.builderdepot.co.uk/
Music:
/ aka-dj-quads - Навчання та стиль
As an audio technician, i want to thank u for the upgrade in your gear!!
Haha I went from a blue snowball to Samsun q2u with audacity. Feel free to email me any recommendations for better sound 😊!
Fantastic set of videos, I've been looking for something just like this for ages. Can't wait for the next updates!
Thanks Neil! I'll be working on the warm roof vid this weekend 👍
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.
Really useful information. Thank you
This is AWESOME !
Perfect for learning
Stunning build, you should be proud of yourself for it (and doing it solo). Love the theory bits and explaining it all really clearly.
Thanks Alex, much appreciated. I guess I am sort of proud, but will be especially so when it's complete and so is this series. Some way to go with each!
Thanks! Love the way you do it. For me, your series is the most useful found on UA-cam. Can't wait for the next episode😀
Thanks, that's nice to hear. It just takes a long time to do! I think the quality is improving with each video though.
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!!
It was very kind of Keith to give me a mention, glad the info is helping you out. Always good to have another Alistair/Alasdair on board, thought 'Ali' would be easier for people to remember though! 😁
Yup. As one Ali to another, I've been called many things... I really admire what Keith's doing too. It's a very helpful community. Cheers!!
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 . 🤗
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 design.....and 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! 😂👍🏼
It's the little things :)
Watched for 2nd time, good work there . Looking forward to your nxt update.
Of all the videos on building a shed, yours is the best one. I
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.
That's great, welcome to the channel Darren! It really does take so much longer filming everything and even longer editing the shots into an intelligible video but given the response so far, this information really needs to be out there it seems!
Would like to see some photos of yours, might work on a FB page or something for people to share.
Great videos Ali, very detailed and useful. Keep up the good work
This video is awesome, really helped me thanks!
Fantastic work!
Thanks for taking the time to make these. I'm starting a similar project and not having done one before it's pretty daunting. In depth videos like this are a great source of information (and confidence!) Can't wait to see the finished project but enjoying the stage by stage process. Great work - thanks!
I'm really glad it's giving people confidence, that's fantastic-exactly what I wanted 👍
Another great instalment! 👍
Brilliant video mate! Really appreciate you taking the time to explain it all! This series is both very helpful and insightful!
You're welcome! I'm glad you're enjoying it mate 👍
Hi Ali again very impressed with the way your build is progressing i understand the options you had with the pitch of your flat roof and the best way to go about it off course using firring strips would have been a lot easier and less time regarding labour and working out but in the end i think going with the option you did was the best way to go giving your fascia boards a uniformed look around the building i also liked how you used the angle brackets and twist nails again instead of just cheek nail and screwing your joists also giving the joists a more solid fixing especially on your overhangs and loved your top tip with screwing temp timber hangers to sit your fascia boards onto for you to get your first few fixings in place a great tip for people doing this kind of work on there own as always massive thumbs up :)
Really good! Thanks for taking the time to film edit and post. Very useful
thanks Simon!
Thanks for the explanation Ali, it's really helpful as I'm building a home office atm for a client.
Great series of videos, from foundations to the roof. I haven't seen any footage on UA-cam so logically laid out, perfect format. Guys like that should organize workshops, it would be beneficial for both sides...
Thanks Igor! There's plenty of workshop organisation to be done, don't worry about that haha
Love your informative and insightful video
Waited a while for this vid, will watch again for extra detai, , thanks
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!
Do it!! A flat roof really isn't that tricky 👍
@@AliDymock any more projects on the go?
@@andypowlesland599 Yeh! Moved house, made a potting table (2 vids out on those) and a side gate (vid to come on that) and now doing fencing before re-doing the roof of my garage! Busy!
Ali Dymock thats great! I’m a landscaper who takes on similar jobs! Just about to build a 12x12 t and g shed that is fully insulated and able to break down to 8x4 sections for transporting when we move in a couple of years!
@@andypowlesland599 Nice!
Excellent for additional information.
Brilliant, well articulated and with good camera coverage. Very enjoyable series of videos.
Thank you kindly! It's hard to know whether the level of detail is right when putting them together so thanks for the feedback!
Spot on mate. Nice one.
Thanks , this video help me a lot 😊😉🙏
Excellent job 👌💯
Outstanding again. Well done Ali 👍
Thanks Paul, very kind of you to say. Hope it's useful for you.
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.
How did you get on. Did you build it
@@MrJonpac yep all built 👍🏻
@@vikingofengland
Nice one.
Just doing mine now .
I've copied it exactly .
Great videos
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
Great stuff Dan!
I so love you choice of music in these videos!
You'll like part 10 then!
Can't wait!
Thanks for the video..well done.
Cheers Jiri!
Very informative. I’m planning to build
Nice work Ali
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.
Hi everyone, thanks for your patience! A lot of theory in this one so had to create a lot of slides.
As before, if you tell me the span etc. for your garden room I'll help find the right joist depth for you 🙂
EDIT: I've now created a span table document you can download here: www.alidymock.com/resources/
Hey Ali, thanks for your videos man, I am following them all and I am planning to go DIY with my garden office!
I am planning to build my garden office with concrete block walls. The garden office will be 8m x 6m in depth, could you tell me the right joists and spacing for this, or should I go with engineered ones? Thanks again
I think finding joists to cover this length is hard?
Hi Ali, excellent detailed videos. Looking forward to doing this in the spring. Have you any of this info in spreadsheet form or similar? Some sort of step by step written guide? Many thanks, Josh
I am trying to work out the spec of my door header to span a 3.6m bifold door. Do you have any idea what I would need if I was using c24 timber?
@@joshuaomalley972 Sorry for the delay in replying, just saw this. I have written more on the website but the idea was that videos are easier to understand than written form, don't you think?
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
Yup, some viewers will want to build theirs like a house and others will just want a glorified shed-there's no right way. Glad you're enjoying it.
Best videos on this subject by far. Cant wait for the next one.
Great videos...really well explained..You answered soo many questions i had..Subbed!
thk mate i will build my house in Argentina with your tips!!
It's was very useful video.I will build the small house in my sister's garden.Thank u.
🤓
Hi Ali thank you for making these videos! Well structured and informative. Subscribed!
:) cheers Michael!
good information!!!
Looking mega pal, keep up the good work
Cheers Phil
subbed, glad to see you finally got the voiceover audio levels right.
Got there in the end ehy. It’s just not that easy on iMovie for some reason.
Awesome 🙏
Awesome!
Hi Ali . Many thanks for your great Videos. Simply some of the best guidance videos I have seen. Coupled with great knowledge and explanation. I am currently starting to design my own 6m x 4m Games room. Coming across your work couldn't of come at a better time. I shall be taking your advice on-board in my own build. Can't wait to see your finished room. Keep going it's all worth it.. Thanks again
Great stuff Paul, sounds like an awesome project. Definitely will be having my table tennis table going in mine, can't wait.
Thank you for such comprehensive explanation ,I hope to be starting my garden room shortly and this has been very helpful.
Sent Via Keith Browns, watched all so far Great build, going to be an expensive build (for me that is) BUT once finished think will look BRILL
Welcome to the channel, thanks for checking it out. You're right, it's going to be more expensive than I first calculated but hopefully it will be worth it.
Awesome video and nice songs playing. Congratulations!
Cheers Jake!
Ali Dymock , thanks again. 👍👍👏👌
Just brilliant and too detailed. Searching for similar content and found it
You are awesome
many many thx
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
heheh, glad you like them Naz!
Nice video bro
This is so great. Thank you for posting. I have been looking for examples of this being done in the uk rather than just the states for ages.Can't wait for the next instalment.
it's up now, I just haven't linked it to this video yet!
Just watched and commented. Thanks. Would you consider releasing your sketch files?
Sketchup? As mentioned in a previous video it's not particularly detailed, but sure! How do I do that?
Hi Looking forward to the next video. I hope it is going ok. You could upload a copy to dropbox and publish a public link to it here. I think you can do that in the comments section.
If for any reason it doesn't play correctly on youtube I'll look into that. Just editing part 11 at the moment.
Nice videos Ali. These are very well made videos and I like the Lofi Chill Step interludes. Enjoyed it and took 2 pages of notes. I'm building a similar sized room as your garden room. But I'm going to be brave and attempt an L shape keeping it under 30m2.
Hi John, thank you. You're the first to mention the music! I think I've sorted out the sound levels now so hopefully they add a bit of fun to the videos and something to look forward to after all the info!
Sounds like a good project. Feel free to ask any questions and thanks for subscribing
I am loving your videos and currently starting out on the adventure of building a gym in my garden. Would it be possible to get a list of all the materials and equipment you use. You truly know more than most of the builders I’ve spoken to about my project
Just wanted to say hello from Dallas. Learning a lot from you and looking forward to doing a similar project like yours! keep the videos coming! amazing work!
Thanks Carlos! I noticed I had a few US subscribers which is great as I learnt all this from watching American youtubers. You'll have to ignore all the building regs/planning permission stuff as that's UK orientated. I think you have 'code' over there? I enjoyed Dallas, great to see people walking around in cowboy hats!
Actually, my regulations/permissions are similar to yours regarding size, location in the garden and Max. Height. but the limits are reasonable and sufficient for my needs. I like your ideas for the roof!
Interesting! May I ask, do you have PIR insulation over there, I’ve never seen anyone use it?
Yep. found it quickly on the home depot website. about $20 for a sheet of 4x8 (feet)
Gosh that's cheap! 😤
I’m about to do mine, but I will install 2oz fiberglass mat on top. That will help a lot.
Loving the videos so far. Gonna be starting my own workshop build very soon. Smaller then yours around 2.4m x 4.8m & 2.5m high. Havnt got room or money for a build quite like yours but should be ok for me
Excellent, that sounds like a pretty good size to me!
Ali Dymock its ok. I would of gone bigger & had less garden but the wife wasnt happy with that idea so i compromised. Happy wife happy life!
Could you screw the firring strips to the underside of the roof joists and just stop them at the front wall so you don’t have a wider facia?
hmm it's a smart idea, you'd have to fasten the firing to the joists first to stand any chance of working I reckon
I was recommended your channel by Rag 'n' Bone Brown in his latest UA-cam Vlog and I'm so glad he took the time to do that. I've watched a lot (A LOT) of workshop build videos and your series is by far the most informative and skilfully produced. You've clearly spent a lot of time and effort putting this series together - I hope it goes on to reach a much much bigger audience because this series is a gem. I can't wait to see what you create and build in it. :)
Wow what a lovely comment Maria, thank you! The number of new subscribers who came over from Keith’s recommendation shows that there are people interested in this subject, they just haven’t come across the videos yet.
Quite a way to go yet, but really looking forward to doing some proper woodworking too!
Ali Dymock, you deserve every success. I don't know how it all works on UA-cam but this series would be invaluable to anyone embarking on this type of project so I hope it starts appearing everywhere and your subscribers increase week on week by at least the number of screws and nails you've used so far :)
I love the music you use too :)
Love the series. It's helped me a tremendous amount. Currently just finished the floor.
I have a question about the long walls (not the rake walls). How do your ceiling beams sit flat on the top plates? Did you cut the ceiling joists or do your top plates match the pitch of the roof?
Or is it such a slight angle that it not something you have to consider?
I think we answered this on email Alex but for everyone else: mine aren't cut and so lift off the top plate slightly which is fine because the angle brackets do the job nicely but on a steeper roof you would want to cut 'birds mouths' which I will eventually get to.
Amazing series Ali!
Question about the space between the roof joists where they extend into the overhang :
Did you only use PIR insulation or is there wood blocking as well between the joists? And why?
An invaluable series of videos, many thanks! A slightly confused question re firring strips - I'm guessing they should also be laid on top of the side pieces so the overhang is fully supported right to the edge - in which case the fascia boards at each side will need to be wider (deeper) than the joists, presumably?
Found this series yesterday and now binge watching, very interesting, informative and well made videos, thank you for making them. I do have one question having watched this video. In an early episode I believe you said you were building up to the boundary, but you have now created an overhang on the side of the building, does this overhang the neighbouring garden? Not a problem while you live next door to your mum, but...
Im hooked! Subsribed and ready for moaaaar! :)
haha, welcome aboard! Unfortunately I don't post weekly so there is some time between videos. That said, ep. 10 is in the works...
2:11 some isulation are cut before hand to fit between joists of 600mm apart
True.
Great series. Thank you so much. Dumb question but Can I put the firing strips under the joists?
Hi Ali, happy to have found your videos which are helping me much to design my garden house, smaller than yours, it's going to be 3x4 meters, with flat roof, but i want it to be walkable to use it as a terrace. I wonder if you know what would be the distance between joist to safely support the weight of 4 persons?
Thanks in advance
Awesome video, really appreciate it. Could you be so kind as to tell me the timber joist sizes needed for a 6.2m span at either 400 or 600cm centres? Many thanks in advance
Hi Ali,
Loving the videos and been a massive help! Just started my big build and have a question for the rafters. As they are on an angle, did you cut the face end of the timber so it was still vertical, or leave it at a slight angle?
Great videos thanks, I have a brick shed that needs a new roof, it's going to be flat with slight tilt for water, rough size is 4.3m x 3.4m, which way should my joists go, long ways or short ways, and how far do I space them apart? How many rows of noggins will I need, and what size and type of timber do I need please? I'm an absolute beginner and on a budget but I know I can do this with your help :)
Thanks for these videos! Do you need to account for the gap between the roof joists and the top plate on the front and back walls (caused by being a different height) or is it too insignificant to matter?
Great video converting my garage can I connect 2x6 to the existing wall by creating a wall plate . Also when you when for a sloped roof internally one side was higher then the other ?
very nice job well done I'm building one at the moment but going to use rock wall as its much cheaper just going to finish the roof completely first then windows and doors and then put 18mm moister resistant chip board floor in after words and insulate it top to bottom afterword's. also if you counter batten the ceiling joist you get all your cross flow and ventilation very easily it saves thousands of pounds, as you can use loft roll insulation and no planning required as you will only be 2.5 meters max. I'm estimating 7 grand in total its 7m by 5m with a glass fibre roof and I'm using reclaimed windows and doors.
Sounds great Ryan. I can say that mine is crazy warm so I think rockwool is a great option 👍
People knock Ebauer tools but that drill was a godsend.
Agreed! Always worth a punt with Screwfix tools as the return policy is so good, no quibbles at all.
Thanks mate, very well explained and very useful (again) (:
Thanks again for these videos! Amazing resource and I'm learning so much for my project.
With regards to the roof slope, did you consider tapered insulation boards at all? I'm considering all options at the moment!
I didn’t know about them at the time but someone mentioned them a while ago I don’t think I’m a fan (I remember coming to that conclusion but forget why) but they will work no doubt.
Great videos thank you, A question please did you not have to cut a birdmouth in the roofing joist so that they sat completely flat on the top of the wall plates please? Also what was the diffrence in height between the front and back walls to create the right slop please.
There is also option #3 for slopes - insulation slope pieces, if your insulation manufacturer provides an additional slope accessories for it's system.
like this:
nav.tn.ru/upload/resize_cache/iblock/0e9/1000_0_1/TN_KROVLYA-Praktik.png
Hi Ali, appreciate all the work you’ve done with the videos!!
I’ve got a question on my build.
It’s not square and the roof spans from 2.5m one side to 4m the other, I was going to use double 6x2 but is this an over kill? I’ll maybe need it on the first 2/3 rows of roof joist on the long side but then seems unnecessary to do it the whole way? Or do I need to keep it standard through the whole roof? Any help you’d be able to give would be great full
Easy to assemble a shed. Just follow this guide
Awesome series of highly informative videos so far! watching back to back. Question regarding the roof insulation, why not go with a hybrid roof insulation? William Griffin from Oak Wood Garden rooms has a great description of this on his videos
Thanks Richard, glad you like the vids. So everything I read on hybrid roofs raises the issue of condensation and advises against it. I should think it is fine but it seems a big risk if it were to go wrong which of course would only become apparent after a few years. I had planning permission for a greater height so for my build a warm roof was the obvious choice and this is how practically all flat roof extensions are built so definitely the winner - no thermal bridging and no risk of condensation and therefore rotting of the roof joists.
Hi mate, thanks for these videos they are spot on! I have a question.... what would you recommend to use in terms of joists sizes/ spans for a roof sized 5.64m x 5.68m as looking online its 63mm x 220mm but seems excessive,. Also - the cold roof design, what dead load per square meter should be used? Cheers!
Nice! I need 5.8m joists. Can i use the, as singular joists like you have? Or shall I double them up?
Hi mate, see you didn’t use jiffy hangers. Has the brackets held it all down with no twists?
Really really great videos and perfect timing as I'm digging out for my garden room slab at the moment. I might have missed it but how do you create the roof pitch? I get that the front wall is taller than the back but what about the sides as I assume the top plate is horizontal not sloped?
The top plate could be horizontal with mini studs between it and the roof joist but I went for rake walls. Sounds like you missed part 8!
Great videos Ali. I wonder if you could offer some advice. I’m planning building a 3.5m x 3m garden room. As I want to keep the max roof height below 2.5m, what size floor and roof joists would you recommend at 400 spacings? I’m thinking 4x2s for the floor and 5x2s for the roof. Would this be sufficient?
I honestly commend you so much for this effort!!! Any reason(s) why the roof light never went in from your plans?
Umm, just because I figured it would be easier without but now I regret that ever so slightly. I think it's actually easier to do than I thought at the time so would recommend.
Furring strips on a warm roof also mean you have a small cavity where humidity can condense on your top sheet of osb. As a result you need to vent the gaps between the furring strips to stop rot issues down the line. Steve roofer has some videos on this issue.
Rake walls definitely the best choice
Not sure I follow this George, the furring strips will be under the OSB, on top of the joists, and will be warm in a warm roof structure so no condensation. Obviously with a cold roof the gap above the insulation (whether joists or furrings strips) needs to be ventilated.
Sorry Ali I rewatched your video and realised I had misunderstood what you presented. You are absolutely right that the furring strips go on the top of the joists whether cold or warm roof. The scenario i was thinking of is when people lay the furring strips above the insulation on a warm roof, creating a small unventilated cold cavity.
With the over hang on the sides would it not have been better to leave the last full joist out each side so the small peices of joist were longer and had more of a canter liver to them? Fantastic series BTW I'm really learning a lot and is really helping me with my build I'm just starting
Thank you
It's a good idea and shows a good thought process. For. larger overhangs I'd say that is the better/only way but the downside is upsetting the joist spacing for plaster-boarding and OSB on the roof/ceiling so for similar or smaller overhangs to mine I'd say you're better off doing what I did.
Hi Ali. I'm building a warm roof garden room but due to the fact there is an overhang on the sides this means using full sheets of OSB on the roof means I either have to cut short the OSB (if joists and wall studs line up) or don't worry about lining up the joists with the wall studds. I can see from your video that you haven secured OSB to the edges of the overhang but your joists and studs line up, so did you have to cut some off your full OSB boards?
Hey Ali! Thanks for your videos, I’ve been following for a long time and just finished the floor in my 3x4m room!
Just planning my roof and walls as I am only going to 2.5m total height. Having already lost 18cm with the floor/foundations I would like to do a cold roof, but I have found SIP panels can be used for a roof at 15cm deep. What are your thoughts on using theses, seem to be used quite commonly in modern construction!
All the best
Well I've had a quick google and it seems you can span up to 3.6m with 15cm SIPS with 2 2x6s inserted which happens to be exactly the same for just doing joists and insulating in between. So I'd weigh up cost vs ease of use vs cutting timber and insulation but the result seems to be the same as far as I can tell, though I'm not too familiar with SIPS yet.