Professional Loft Boarding part 1 (Raised Loft Floor)
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- Опубліковано 7 вер 2024
- #southernloftboarding is a highly experienced #raisedloftboarding and #insulation company covering Dorset, Hants and south wiltshire, this is a small 20sqm loft boarding job that took approx 5 hours to complete, please subscribe and like for many more videos and tips. www.southernloftboarding.co.uk ▶️ Please Subscribe: / mrbish11
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Are they 3x2 lengths your using as supports and 1”1/2 wood screws??
@@OlRob23 2.4m cls and 2x8 screws seem to work best
Yea good video. Recently did this in mine before converting. If your house is older and some of the old beams aren't perfectly straight be prepared for some potential ceiling cracks and plaster pops below. The new timbers pull the old ones straight and the pressure can cause cracks. But all good.
Another option that I used was to put joist hangers on the original BIG heafty timber , you can see one in this video to the left of the mans feet , another would be in front of him out of shot . In my case I then put 6 by 2 joists in on the hangers , so that the floor was not bearing on the ceiling at all . And zero ceiling cracks in the rooms below as a result .
What's holding all the weight of the new beams and flooring? Surely not the original joists?
Great job!
Advice please! I am about to convert my loft into an office space, this is a great video - he drilled the cross bracing directly into the timber below at an angle. I was going to do this with L shaped heavy duty brackets. I imagine my way will create extra work/expense needlessly. Could anyone offer guidance? Thanks very much!
Get yourself a structural engineer pal.
Hi great videos I'm doing a hobby room up in my loft I currently have 4x2 ceiling joists but not much headroom can I get away with 3x2 cross bracing or will it have to be 4x2 and do I need to put them onto wall hangers or just screw them down to the original joists cheers
3x2 will be fine at 90 degrees to original joists direct onto joists
Can this be then used as a converted room and will be up to building regs?
Hello Sir. Amazing video. I would like to ask (because i am not a builder) about something:I already have insulation in my loft. 1 .Do i have to put it properly beetwen joints before I will start put cross timber?do i have to put another insulation?I would like to know how to avoid condensation?thank you
Hey. Many thanks for the vid! Lots of good info on the comments too. I have a couple of questions. What kind of screws do you use? (I know the 8x2 bit) but are they gallvanized, deck screws? what type? also Do you pre-drill holes for the screws or you just screw right into the new cls? Finally... By keeping the new timber 400mm apart you can use the standard floor boards which if I recall correctly are 1.2mts without having to cut them (except on tight corners and else)? Is that a fair assumption?
Thanks, 2 inch twin thread screws, we do not pre drill holes, and yes osb 1.2sqm boards are best.
Good job
How do you keep all the flooring entirely level? for instance the joists in my loft aren't 100% in alignment some might be .5cm or more higher than others.
Would you be grateful for your thoughts
We have to use a bit of bracing under the cls batons, this usually works fine, good luck with the project.
Good post
Thanks for the video keep them coming..can I ask what kind of loft ladder is it you've got
hi, its just an extendable ladder.
It's a so very beautiful...
Hi great video thanks
just a quick question if you place the new Cls directly on top of the old ceiling joist wouldn’t the old joist be taking all the weight instead of strengthening them as the old joist ends will be on the wall plates?
Please don’t take it as a Criticism, it’s a genuine question I don’t know the answer … just thinking out loud before we start ours lol 😂 thanks and any help would be appreciated !
It does add quite a bit of strength and helps spread the load but it's not the same as installing a new floor with proper floor joists. The latter is better however it's a MUCH bigger and more expensive job.
Hi I know this is an older video. I'm looking at a flat loft so quite large, just as a space, so no toilet or other reg stuff. I'm interested in the cross bracing, if existing older joists are usually 4x2 or 5x2. Without sliding in new 8x2 along side the old ones to bring it up to spec for an actual live in space, I've seen it being done by gluing a 2x2 or 3x2 on top of the joists and screwing at set spacings passed by architects. Does this counter bracing basically do the same or spread the weight over many joists or is it just to create more space for more insulation?
Toenailing the timbers because long screws expensive?
Hi thinking of converting my loft into a little bedroom what are the best timber to use plz?? An also do I need to use hangers an do I need to run them the same way as the original joist?? Just trying to get as much advice as I can thanks..
Nice
For any electrical cables that are at the height of the original joists and will be difficult to raise the height of…. What’s the best way to deal with them?
I got frame 2.5in above insulation. Insulation is thick. How vital is it that i add insulation above the frame so it touches flooring?
So I visited my loft last night! (First time, new build) and the insulation is really deep, almost like 2 layers, what do I do about this? taller CLS?
no, you should be able to board the middle section if there is one and using 89mm cls, remove some of the insulation and place it on either of the two sides, just put back as much as you can between the gaps in the cls..
We’re looking to use our loft as a spare room when needed in house we’ve just purchased. Could we do this method? Or would it have to have steel or bigger joists bolted to existing ones?? Cheers if anyone could get back to us.
Hi, definitely not this method as its designed for storage only
@@MrBish11 Cheers for quick reply!
Hello, getting a loft ladder installed soon and plan on boarding my loft when after that. I have 1 question. What’s the distance between each batten and what size screws ?
Try and stick to 400mm between each cls joist if possible, good luck with your project Mark !
@@MrBish11 thanks for the advice. Went to wicks today to price wood up and brought a length of 4x2. Went into the loft and put it on the joists and on some joists it does not touch. Out of the 5 joists it covered only 3 points of contact. Is there a trick to get around this? Just packing ? Cheers
doing this , is it solid/safe enough that i can put a little office in the attic, just a desk , pc and chair ?
depends how log your joists are and if they are securely anchored
Do you have loads of cables hidden underneath? What are your thoughts on aerial cables etc being under the flooring?
Hi please don't laugh, a total novice here - but would it be possible for me to do this in my loft ( trying to make a studio of sorts) following your instructions.....thanks for any advice and good vid
Hi Mark, although it is really meant only for storage, I cannot see any reason why you cannot make a studio up there if you have the head room. Make sure that you brace all the joints where the boards go together and use enough cls at close spacing say a maximum of 400mm apart - -good luck with the project !
@@MrBish11 thanks very much for the information really appreciate it....and i'll subscribe and check out your other vids 😉
i have 3x2 ceiling joists in my loft spaced about 14in apart and i want to board it out for storage but want to strengthen the floor , i was thinking about screwing 3x2 on top of the existing 3x2 to add strength making them 6x2 does this sound ok , or is doing a criss cross method better + the same as the video
Thanks, I would really suggest having the cls at 90 degrees angles as this will definitely strengthen the loft foor
How much weight can that floor really take??
Doesn't look that strong for all the items you woukd have in a typical bedroom.
So you are not using these black color joist that raise up the floor higher?
no, cls
Why do you screw from the side and not from the top?
I assume you mean the cls, that is so we can get a better hold with the screws
Is this MDF? I thought that OSB or Plywood is more suitable for the job
So if my original joists are 100mm, how am i achieving 270mm regs of insulation without compressing it?
You apply feet on top of the joists for the boards to sit on raising the floor level.
Hi, great video. My joists are 84mm x 36mm. Should I cross beam using 89 x 38 or 63 x 38 timber?
Hi, depends what level of insulation you have, if it is 200mm or over use 89mm, hope this helps
also if the roof pitch is low, use the 38 x 63 cls as the 89's are a little high for low pitch roofs
@@MrBish11 can you explain sorry, but if you use 89mm high timber to run cross ways to the existing joists And put in 200mm insulation then you will compress it by more than half and ruins its effectiveness - surely - or have I missed the point?
@@normanboyes4983 200mm is the total, 100mm between the original joists and 100mm between the new cls, equates to 200mm insulation plus the boarding so you should not lose any heat.
@@MrBish11 Ahh OK understood.👍 However the minimum standard for insulation in (current) building regulations is 270 mm. I think homeowners aspiring to improve to meet the latest standard will struggle to incorporate that depth with your recommended approach of using timber supports as it’s going to require quite hefty and expensive timber.
Not trying to be difficult - I am about to embark on topping up my existing 100mm with a 200mm layer on top. I need to board at least one third (about 35m2) for storage and I will need to walk on it too.
The house was built in 2000 and the roof construction is horrible and moving around the loft is difficult - so much wood up there (trusses and hips).
I am struggling to work out the best and most economic way of doing it.🤔 be
What is the distance between joists please? Thank you
Hi, 400mm would be best
@@MrBish11 thank you, laid across loft joist and fixed diagonally with 30mm screws?
Did you attach the timber to the wall?
Mine is already boarded. But the idiot who did it, has laid the boards on ceiling battens!
There is a supporting wall in the centre. I was going tobuild up on top of this wall with a 3 x 2 spacer, andl lay 4 x 2 joists on top of the spacer, overlapping on the supporting walls.
But i don't know what to attach the othe end to as they go towards the eaves?
I was thinking of suspending timber bolted to the rafters, and attaching the joists to the bottom of these timbers? Obviously once they are level.
Is this allowed?
Exactly what we do when there is no supporting joists, usually towards the gable ends, we just screw cls across and this usually does the trick.
Cheers Bish
Great vid, thanks. My loft already has insulation (roughly 15" thick), would i still need to raise the boarding in order to leave a gap? Cheers
I have the same question
As long as you don't compress the insulation it should be fine. My attic has two rolls of insulation so I need to do this soon so I can throw all the crap we have accumulated that we never use but can't dump, up into the attic 😂
@@KeeronMac thanks, also, why can't you compress the insulation, is it a regulation thing or related to damp?
@@KeeronMac understood, really helpful, thanks a lot
@@PackPullParadise From what I have read and watched with hours of these videos it just makes the insulation less efficient. I know I'm 6 months late to replying haha
hi great video do you need to leave a 10mm gap between joints?
No, you stand more chance of getting condensation if the cold and hot air passes under the boarding, thanks for your comment !
@@MrBish11 thanks for answering appreciate it
Hi I’m thinking of doing this in my Loft this weekend. My joists aren’t very big though. Approx 75’mmm x 32mm. Would this method be possible with such small joists or would you recommend sistering?
Hi, I would use cls 38 X 63 X 2400mm to keep the weight down
@@MrBish11 thank you sir. To be honest I already have a lot of 2x4 or 38x89mm which I planned on using. Do you think this would be problematic? I was thinking of trying to join the added supports on top of a supporting wall in the attic ( Least I think it’s supporting) and then using noggins to strengthen but do you think this is a no go?
Thanks again
Hi my joists in the loft are 3 x 1 inch is this method safe to put boards over my joists , with the weight
Thanks ,great vid 👍🏻
Hi, no use cross cls from a DIY store, 2.5 inch height at 90 degrees to the original joists, this will then transfer the weight and allow it to be walked on without the fear of cracking out the ceilings.
@@MrBish11 thanks 🙏 much appreciated
No Air gap between floor and wool? I did this and it caused moisture to form under the sheet flooring.
That is rare, you are much more likely to get moisture if you leave a gap, especially in an older loft that is prone to some condensation !
@@MrBish11 I have a 1st floor that is undone, basically just looks like a massive space above the ground floor with wool as insulation between floors. I believe it’s the hot air rising from the ground floor condensing onto the underside of the cold 2nd floor flooring.
What kind of screws did you use, thanks
2 inch twin thread wood screws.
Hi thanks for the video, what screws did you use to secure the timber down?
Hi, 8 by 2 inch.
@@MrBish11 thanks mate. Will be going up into my loft this weekend to measure my existing joists and seeing what kind of support they will need. It’s an old house (1895) so I’m guessing they won’t be the best. We have old lath ceilings underneath that as well so want the flooring up there to be as sturdy as possible. Do you ever fit the extra timber side by side to the existing joists to strengthen? I’ve seen this done or do you always do it 90 degrees?
@@archiethere85 I have also seen this done, but would recommend using 4 inch cls laid cross section to the original joists (90 degrees) insulation between the joists and board over, this will then disperse the weight when walked on.
@@MrBish11 Great simple video, what size timber would be ideal for the 90 degrees to the original joist? I am thinking of laying a 18mm loft boards and don't want the height of the loft to be compromised
p.s. what is the spacing recommendation between the additional timber?
A quick question - I will be boarding my loft soon (old house) and small loft. The joists are not all level, what is the best approach using your method of using cls over the top of the joists (pre attaching loft boards), please? Also what OSB loft boards do you use or where do you get them from? And finally, where do you get your screws from and what brand (I see in the comments you say 8x 2" twin thread)? Thank you in advance...
Use the 3 board 1.2m packs of osb and try to brace under the uneven joists to keep as level as possible, good luck.
@@MrBish11 Thank you for your message, very kind of you.
Dear GM, all going well with the boarding. However I have one question I am using the 8x2 screws into cls 63x38x2440 - when I screw the cls to the joist (using the screw at an angle) the screw sometimes doesn't always bite into the joists and can occasionally split the cls. Is there any special technique you use that I could consider please? Any feedback would be much appreciated. Thank you in advance.
@@NormDave screw slightly higher from the bottom of the cls, this should work
@@MrBish11 Tried that and it seemed to work better - thank you. With the areas where joists and cls have gaps between them is it best to use packers or double brace (as you have mentioned in some of your videos). I'm assuming that "double brace" is using some cls screwed into the joists, on both sides of the joist to compensate for the gaps? It's starting to look good now - I'm very grateful for your feedback...
is that a total of 200mm insulation or is it a 170mm on the top?
Hi mate great video I'm planning to do this myself. What size timber do you use for the Cross sections. Is it 3"x 2"?
Cls 316
Cheers mate!
The 2nd lot of insulation (brown) looks like it'll be squashed when boards go on top. Can it breathe?
Nice video, think you need to get some knee pads!
we wear knee pads inside the knee pockets of the trousers !
Hello, I am looking to do this for my sister soon. Do you just run the lengths of tumble across the joists and screw into the joists. I wasn’t sure if I needed to support it to the wall as well?
Thanks
Do you wanna do mine?
Hi, why in 5:02 the raised floor is not at the same level with the header joist /beam? I was thinking that if I raise the floor in my loft, the beam should be covered - would that be a problem please?
No, not a problem, good luck
Hi. How do you get around the wiring for the downstairs lighting.
The wiring has room to run under new timbers . And where they run over existing timbers they can be moved to suit 👍
This is great, but how far apart do you distance the cross timbers?
600 mm 👍
400mm should be about right !
Hi, where are you based? I’d like to get a quote please? Thanks
Hi, southernloftboarding.co.uk
How far apart are you laying them cross beams please?
400mm
@@MrBish11 thank you.
If I’m using wickes loft boards I want these 600 mm apart right?
@@neilbrighton4943 you may want to stick to 400mm
@@MrBish11 when you do 400mm, does the floorboards not hang in between joist. Then how do you secure it.
@@khaleelghoora9467 no, they don't hang, just use 2 inch wood screws at an angle into the cls and joists.
Thats pretty music, what is it?
Hi I’ve recently insulated and boarded my loft. After 4 weeks I’m having issues loft condensation. It’s quite bad and mould growing on timber. Any suggestions would be greatly appreciated . thanks
What size of screws are you using?
8x2 inch
@@MrBish11 Is this for the whole project, cls to joists and OSB to cls?
@@jackathowarth yes spot on, you only need one type..
@@MrBish11 refreshing to have a response from the professional! Thanks again
Knee pads?
Always, internal onea
I’m planning on doing my loft, what’s best timber or loft legs?
Definitely timber, use 4 inch cls running cross ways to the original joists, put back insulation and board over - would not recommend loft stilts in any format.
@@MrBish11 thanks 👍
What size timber 4inch by? Thanks
@@LittleTimmy685 use this size, works well 38 X 89 X 2400mm
@@MrBish11 cheers fella
Doing they would it be okay to have a desk, computer amd office chair and obviously my weight sitting on it (85k).
Or would this be to much?
I have done many lofts where the client has chosen to do this so should be fine if the work has been completed correctly.
@@MrBish11 that's brilliant. How much weight would you say it could hold roughly?
Also my attic has 2x4 joists. What size timber should I use to go across?
@@danielwillz2155 You should refer to manufacturers guidelines, but if you use 4 inch cls and brace all the joints from underneath, it should hold a fair bit of weight.
the music can get seriously irritating
Covers up the swearing !
@@MrBish11 🤣🤣
How much would you charge to do this in a 2 bed semi?
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