INSULATING THE PITCHED ROOF - How memory foam and a pizza cutter made life easier!
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- Опубликовано: 28 сен 2024
- Time to get insulating again. We have done lots of projects involving insulation especially PIR, it's always a rubbish job but it has got a little easier at least.
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#insulation #loftconversion #diy
I don't think there is anything more amazing than the entire family literally building their own house with their hands; everyone is helping out and getting involved! The amount of love and care that goes into this project is amazing!
Great work as per usual… great to see the whole of the family getting involved 😊
Loving the child labour strategy I mean quality family time. Your daughter is a real go getter. Tell her shes brilliant she obvs really enjoys what she does.
I've utilized a very long, extremely sharp Fiskars machete for cutting rigid foam insulation boards, using a stainless steel straight edge as a guide. It works very well for me, & is a clean method.
loved seeing the kiddos helping. maybe they will get the bug and become tradies
Hi Tim. Enjoying the latest series of farm / build videos.
I used a jigsaw with 100mm blade and a dust extractor attached. It wasn’t perfect but made it much easier to cut and quite quick. Still found some pir dust so a mask was still needed.
I like seeing that our girls are going to grow up feeling they are compitent.
To cut the boards I use a thin non serrated kitchen knife cuts all the way through with 2 passes on 100mm boards no dust clean cut. No flipping of the boards.
I remember robin clevett doing a video about knocking a table up to cut PIR with his festool insulation saw but I think it could be used with a recip/jigsaw instead if you used an insulation blade 👍 dont know if the depth of cut would be enough for 100mm but certainly 50 & 25mm.
Does the sharpness of the pizza cutter last, or have you found a way to sharpen it? Really like that all the family get involved with everything, great stuff
Not sure they are ever that sharp. It works best if the line is cut with a knife first however that just adds another step.
Oh god we have 24m of roof to do with all the rafters at different widths, I wish we had a roof as symmetrical as yours. We have 100 sheets of 100mm and 50 sheets of overboard to do. Thanks for the pizza cutter and floor scraper tip, it well might be simpler and cleaner than our circular saw.
I've been there, with an older roof. It was a long tedious job, but nothing takes literally forever.
I've spent the last 2 days fitting pir insulation boards in my garage conversion, I set all my timbers at 450 centres to get 3 equal strips from a full sheet. Everything was a perfect friction fit and no expanding foam used, I used a jigsaw with bosch insulation blades and they worked great 👍
Those Bosch insulation blades for the jigsaw also work really well as a hand held blade if held tight in a pair of mole grips. I bought the set of 3 blades and initially used them in the jigsaw but I found I could cut squarer with the blade held in molegrips run a few times along the face of a long spirit level to get a good 90 degree cut.
With PIR it's not just the dust or the cost, but the glass fibre mesh some manufacturers love to embed in thicker boards. I always end up with a few tiny glass fibre splinters that can be nearly impossible to see and remove, but hurt enough to be really irritating. By the fourth sheet I've normally given in and put gloves on.
We use one of the fine Japanese saws , super sharp & goes through like butter, the other thing is if we have we insulate from the roof down , sounds weird but it’s a bit easier especially on the eves, it slots down into any hangers. Impossible to do from below.
My builders swear by the long Milwaukee 25mm snap off blades, they have a long blade and the MW ones are really thick and don’t accidentally snap. Trying it myself next week.
Hi Tim and all, what I want to ask is how many electric shocks have you had from unwrapping the PIR. Myself and my wife have just moved a lorry load of the stuff for our son who’s doing a huge extension on his bungalow and as we’re weakling pensioners had to split the packs from triple boards to singles. As we removed the plastic wrapping and touched the silver foil covering the insulation,the static electric generated by removing the plastic decided to go to earth via us. Made us a bit wary but also made us laugh.
Yeah you do get the odd zap but with the daily electric fencing moves on the farm I squeal more when moving the sheep. 😂
Inspired by this I revisit the use of a jigsaw (with insultation blade) for cutting PIR board. Previously I've found it wasn't that great - the cut was rarely square.
The way I resolved this was to run a stanley knife down both sides of the board for the cut. This prevented the jigsaw blade from wandering, and now gets a really nice (square) cut.
This should prevent the need to clean the snapped part of the cut, and slightly reduce the airborne particles.
You should not have children on a construction site.....They might learn something and will never forget the experience, but, worst of all they might have FUN... Good on you two for taking time to encourage them to help ( the things they will tell school chums) and be part of their new home. With all the crap that is going on around us with a "jumble sale government" your story is heart warming and gives cause for optimism Bob (Weston super Mare)
If the UK is anything like the USA and the kids go to school and tell their mates and the Teachers that they are working in building a new house, you may be arrested and charged with forced child labor! No joke mate, but it's gotten totally mad across the big pond. I almost forgot to add that using an adjustable length carpet layers knife works great on that PIR.
MODIFY A PLASTERERS FLOAT ,ADDING A HANDSAW TYPE GRIP HANDLE SHOULD DO THE JOB
Hi Tim, when you say Robin mentioned that do you mean Robin Clevett?
I think you can lay full insulation sheets on top the rafters external and batten on top with long fixings. Much easier and fewer joins?
Shot an espisode about that today. Yes a warm roof is far better and nicer to install, however in the cabin it would not work as half was trusses which were a set height so had to match. It is the way we went for the walls though. 👍
OK will look out for that 👍
A sealed air gap is also an excellent insulator.
Enjoying your videos thanks.
i replaced the saw blade in my rage 5s with a Diamond Blade , blade was same diameter, same bore and 1.5mm wide , i can rip up to 605mm wide and 80mm deep , cuts like a knife through butter and no dust ,
Love it thank you ❤
Have you tried a lawn edger, the garden tool that has a blade shaped like a D. They are not expensive and would save you bending over all the time (oooh my sore back just watching you do that). Thanks for posting
I've found that by far the best way to cut the insulation is to get the apprentice to do it...🤣
😂😂
Omg nails down a chalkboard with the pizza cutter! 😱
My recommendation is a builder less mess on me 😜
Anyone try the Festool insulation saw
What size T-shirt are you Tim?
Combine rigid insulation with sheep wool.
get the outside done then focus on the inside. majorly stressing me out that the roof and outside cladding isn't finished 😂
Cutter makes a "fingernails on a chalkboard" noise! Works great. Sounds awful.
... and that was with audio reduced. It was horrible to edit!
@@TheRestorationCouple Your ears must have been screaming! 😆
Taping the sides isn't needed. its for over the joints. Gj none the less
Different tape, that comes next. 👍
I cannot understand why you didn't put your top pieces in first. It would have e been so much easier and quicker.
Check the Email please, i would like to send you a smokehouse!
Sadly I am am unsubscribing. 60 secs of adverts before being able to watch the video. Never used to be this bad. Perhaps its just youtube full stop these days. Best of luck and been great watching
It's not an airport mate, you don't have to announce your departure! I'm sure they'll be okay without you as they've done fine so far! FYI, It's RUclips who decide the advert time not them, Duh!!!
@@MARK-M83 thanks Mark. Not sure I give a shit about what you say but thanks again knobhead 😂
Do yo not know that's its RUclips who put the ads in ?, they're trying to get you to subscribe and take your money so you can watch "Ad free", thought this was common knowledge tbh
Omg Tim I’ve been watching TRC for quite a few years now, and just realised today how big the girls are getting!!
How time flies
I have watched you all for a long time now and always admire how patient you are with your girls, its great you get them involved in so much. I wish I had your patience to get my kids involved more. Amazing as always.
Is that a Festool pizza cutter right colour 😂
Has to be cheaper than their PIR saw 👍🏻
You will be able to heat that cabin with a light bulb I recon. Whats your plan for it once you have your main house built, holiday let maybe ?
FOR EXTRA HOT WATER USE A LENTH OF 10 MM COPPER PIPE WOUND AROUND THE CHIMNEY PIPE OF THE WOOD BURNER STOVE LINKED TO AND FROM THE HOT WATER TANK .THE COPPER IS SUPPLIED IN A ROLL AND IS ANNEALED TO MAKE IT SOFT AND FLEXIBLE THE ONLY PROBLEM MAYBE THE DISTANCE FROM WOOD BURNER TO THE WATER TANK
Bosch T 1013 AWP jigsaw blade. Bought one recently for cutting out roof windows in the fiber board insulation - wish I had found them last year. Absolutely effortless, no mess, super clean cut, advertised for PIR board too. Basically a bread knife in jigsaw blade form.
mmm added to the shopping basket
Looked at those a while back and completely forgot about them. Will pick one up for the last wall of WFB I need to do next week. Do they stay square through 100mm though?
They do work only problem is the dust…. (In an urban city job (windows open etc ) that can be a nightmare.. The jigsaw blade with some form of dust extraction then your away!
I use these blades with dust extraction, really quick and pretty much zero dust. I have had a few occasions of the blade not staying square but that might be me, the other thing is that the blade gets crazy hot so watch where you put it down. There are other brands of the same thing, I have an 80mm one that I used for a job with 70mm boards which stayed much more square.
I found with the insulation blades that if you score both sides of the foil first and then get the blade in the cuts to start with, it effectively guides the blade and its less likely to start wandering off line.
Hi Tim, I've used a Japanese pull saw when cutting insulation, the blade is thinner than a normal saw and dust is not too bad at all
Great idea 👍
If your cuts are straight, could you not combine some of these 'wasted' strips to make one large sheet? If you're cross-boarding with more PIR, and you use tape, your gaps will be minimal.
A very sharp full size kitchen knife seems to be the best technique I've used but I've not tried the pizza cutter!
for cutting insulate get an old saw and grind off the teeth and into a knife edge!.. but like the pizza cutter! could do with being bit bigger! but like it!.. coming along guys looking good!..
Don't quote me on this but I have a feeling that the new Part L (Conservation of fuel and power) Building Regulations now require the use of that Gap Tape on PIR insulation when being used. OFC that applies to the spaces where you have to comply with the regs in the first place.
I think your right, there’s an entire section now on nothing but insulation gaps and thermal bypass and the tape is one of the recommended solutions
OMG, i can't believe you let your wife use that pizza cutter with her hair down like that...ha ha.....keep up the good work as always
I have used a Bahco insulation cutter, achieved good results, no teeth, like a big bread knife. Love the channel.
Husqvarna chainsaw, makes a right mess but it’s the best fun for cutting PIR 😅
Making great memories with the kids. Amazing to see
Just insulated my loft hatch. Pizza cutter worked great!
I used gapo tape and it did 90% as you mention, on subsequent projects i have cut and fitted the insulation +3mm and pressure fit (with a squirt of foam) as im placing the joists,beams. Progress is significantly more rapid. Need to sheet it asap as you build
Nice job as ever Tim 😀
Tim/Jo, loved it, who'd have thought of the pizza cutter....hopefully a snug home soon
Do you have to tape the edges?
If we are using kitchen implements what about an electric carving knife? :D
You’ll never get a 100% efficiencies, it’s all about mitigation and reduction and by cross laminating the boards this will reduce any loss via these small gaps
I used a sharpened 50mm flexible paper scraper, I sharpened the end and one long side and dragged it towards me.
Hi all Yes the dust is definitely an irritant , I would stick with the pizza cutter especially with the children around . The tape is new to me , and is a bit of a game changer but it’s not exactly cheap . Being able to size your rafter spacings is definitely an advantage, in older properties the approach to the spacings was often an add hock approach which means your caps are all over the place . So that tape could have definitely made my life a bit easier when I did my project 😅 Best wishes as always. 👍👍👍
Is you daughter aware of the going wage rates? I reckon that you have the benefits covered, but it is nearing Christmas after all.
Would be some much better without this awfully bland music
That pizza cutter is a genius idea. Patent it and sell the idea
First, this is great…. Thanks Tim (&family!)
Great idea pizza cutter, nice and clean, well thought out :)
🤔Maybe you could try hot wire foam cutter or hot knife foam cutter(on amazon was some Dominox brand, around 70quid)and some different brands too. No dust at least🤷♂️ In youtube was even tests with own maked cutter. Welder with hacksaw blade fitted🤷♂️
My method is a circular saw. Right mess but guaranteed 90 degree cut.
Proper insulation saw is faaaarrr to expensive.
Would a hot knife work?
with EPS but not PIR
I tried a bread knife, bahco insulation cutter and normal saw. Bahco was useless on 150mm insulation. Quickest way normal saw, but a lot of dust being the down side
An idea for cutting insulation..... I used to use a normal handsaw but with the teeth removed and the edge sharpened to cutting large bits of foam. Its basically just a a huge knife with a handle and I would hope it would slice through the insulation,. plus you can maintain the sharp edge.
I don't think you need to worry about your hair getting caught in the Pizza cutter.😀
I bet there would have been trolls 🧌 as Tim said. Keyboard warriors
@@dougsaunders8109 hardly. Have you seen my hair?
Not my hair! 😉
I use a Bosch PIR jigsaw Blade, It’s like a serrated breadknife but in a jigsaw, quick and no mess!
What is this tape called and where can i buy it
Gapotape, available on their website
I've recently completed the roof in our renovation project and used 2 layers of 75mm PIR along with that tape for the performance gaps. I'd read about special soft material blades for a jigsaw and bought some Bosch ones. They are amazing! Accurate straight clean cuts, and ZERO dust or debris. I'd highly recommend them if you need to cut boards like these (bit late for you @therestorationcouple I know) but a complete game changer when using this stuff.
You absolute beauty! I am about to do all the stud insulation on my timber frame annex. I used a skill saw for the first bit and it made so much dust. To Amazon for a deep pizza cutter!
Either this or the Bosch insulation jigsaw blade is great too
It'd probably be a bit more work, but how much waste do you get if you cut across the boards and butt several pieces end to end for each void? Maybe none, because you can use the last piece to start the next row?
Just a thought about the insulation reaching the ridge line when you where pushing the small sections up over the beam, did you cut an angle and push both sides right to the centre to seal the ridge? an extra, small section would be needed to allow the angle to insert over the beam ( or stud wall) push it tight up then slip a square sided filler block in to seal the gap left
A bread knife also works well for cutting that insulation...
How about a kitchen electric bread/carving knife Im sure it would do the trick and not too expensive
Could make a giant pizza cutter from an old saw blade. Maybe with a track to guide it and long handle so you can stand up.
meat slicing machine blades? commercial size to put in a circular saw. not sure on centre hole size. but am idea Tim
Great work TEAM restoration 😉 and one of the neatest ceiling installation 👏🏻👏🏻 oh… loving the longer video…appreciate the time you gave to edit it .🤗🙋🏻♀️🇬🇧💕jane
Could a track saw with dust extraction work?
I used my track saw to cut 50mm pir with dust extraction and it worked perfectly 👍
Yep. Used a tracksaw on 100mm. Got about 70mm into it then used a long sabatier fish filleting knife to finish it. 😂
Your young mini me is quite the worker.
Your eldest daughter will have a channel of her own in no time! Such a little star 🙂
Wonderful reaction from Jo @ 3:37 😀
childwork! ;)
That sound!
Is the cabin staying there or do you plan on moving it?
Why don’t you use act is hybrid?
Hi, Two questions:
1. Do you push your PIR insulation board tight to roofing membrane? If so how about ventilation gap???
2. You planning adding 25 mil PIR boards as well and then timber battens how you planning fixing it? Through 25 mil PIR board straight into roofing joists using longer screws???
Cheers
50mm space above pir and yes battens below as you say. 👍
Chainsaw!
Nooice!
Love your work 👍
Oh the joy of PIR insulation. I’ve tried all sorts of cutting tools. I hate this job. The noice of it cutting also grates me😖😖
I’ve tried the jig saw and serrated …. nope! No good…. The blade moves and dust everywhere…. As you mentioned Festool do a purpose saw with extract but it’s expensive….. but worth it if you have a few big jobs. But after watching this and I’m doing an extension soon I think I’ll by one…. 😀 Best of luck with the rest of it!
Give me back my sheeps wool any day! Key to PIR is to stick with warm roofs or external insulation and deal with full boards only imo.
Good shout…. Like you on my last project I had an old house…. 450mm centres! No chance.
Robin Clevetton his big build series on RUclips was very good. Watch the whole thing…. Its like Netflix for building nerds! Loved it!
Your family are awesome.
They are! 👍
Tim,
Could you not tape all your off cut lengths together to make a 600mm board to reduce you waist ?
Circular saw works great if you wear a mask. do the depth of your blade and the use a fine tooth saw to cut through the remaining part
totally flammable that insulation , grenfell towers was covered in it & look what happened when it a caught a flame , should be took off the market complete fire hazard
Timber framed structure is also flammable.
Different application as it is going into the roof. If you watch the flame tests they are carried out in horizontal. Grenfell was a vertical application.
Also the tape around the edges means the flame can’t get between the layers
It's one reason why we don't plan to use much at all in the main house apart from under slabs. In reality most of the average house is a fire risk when it comes to materials whether contents or structure. There is however a big difference between a multi story application and a single storey dwelling.
@@TheRestorationCouple o
I looked at the prices for gapotape. Ouch. Eek. Hilfe.