The Big Build 17. Fitting the new floor joists. Posi Joists Floors are brilliant!! An introduction

In this episode of the Big Build I am fitting the new Posi joist floor, this is my preferred way of creating a brilliant structural floor, no messing around with wet bent timbers here!! these are super straight, fairly light, super strong and can do some great spans effectively, there is a great deal of footage so I will split this part of the build into a few episodes
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[@shaunglendinning]

Love this 'Big Build Series'

[@AndrewFroude]

Great job Robin. I love your passion and accuracy!!!

[@justwannaridemabike]

Saturday morning… Coffee ☕️ ✔️ Bacon roll 🥯🥓✔️ Robin’s latest video✔️✔️✔️✔️ Love this, so informative, detailed, helpful and interesting

[@ukconstruction]

Love it!!

[@ashleymccarthy6232]

It's honestly just a pleasure to learn and watch every video! Keep them coming mate. Massive fan 👍

[@normanboyes4983]

Nice work as usual.

[@michaelplays2449]

Great video Robin, Thanks !!!

[@ukconstruction]

Glad you liked it!

[@jeffsmith5911]

Looking good onwards and upwards

[@Excel510]

Great Job Robin, watch you all the time, but its first time commenting, thanks and keep it up.

[@ukconstruction]

Thank you Gary!!!

[@grumpyone5963]

Great job. Your obviously a very conscientious guy who understands that investing your time sensibly setting your stall out well at the start pays dividends throughout the rest of the project.

[@qwertyuiop124172]

Robin you are brilliant at this. I admire your accuracy. God bless you. I can't wait to see next video joists. You are not only carpenter but also professional builder. Well done. Best wishes from Leicester ENGLAND.

[@ukconstruction]

Thank you! 😊

[@burwoodbuild]

Posi joists are fab! Dealt with some old joists last week hacked to within an inch of their life for waste pipes.😲 Some people need to be educated about structural integrity! Thanks for the vid. 😁

[@johndavenport7281]

Good to see some strongback bridging members being fitted. A lot of complaints about flexing and squeaking Posijoist floors turned out to be due to site workers forgetting/not being bothered to fit them when I was designing timberframe. Certainly I preferred this system to I-joists which always seemed to involve a lot of extra accessories from the manufacturer at further cost.

[@gwilko6452]

Great project. Really interesting every vlog. Must be nice to have a customer with super deep pockets to fund every step of the build. Belt and braces

[@ukconstruction]

We only do belt and braces!! thanks for the comment mate

[@tedcopple101]

Stabila challenge? Top job as ever Robin 👍👍

[@T.E.P.]

hope your weekend is glorious Robin .... 62.7K subscribers Friday September 17, 2021. Big work and looking good take time and be safe and make it to your perfection

[@ukconstruction]

Thanks, you too!

[@keefkhat4337]

Paying attention this time. 😁

[@kadirbakrinchannel]

Very nice video

[@johnmorrissey1675]

Looking good no spring on the long run 👍☘️🇮🇪👋

[@ukconstruction]

They are great John!! In the past when I use solid timber joists you can have two next to each other exactly the same and one will deflect under your weight way more than the next one!!!

[@peterbell4154]

Great job Robin , enjoy your beer🍻🍻🍻🍺👍

[@ukconstruction]

Cheers Peter!!!

[@bricklayersworldwithandy6277]

Nothing I haven't done before, d oing a new build at the moment and they were specd of hangers and the builder changed it to built in the wall, how much more work is that, plastic sleeves, beam fill by the Brickie then everything has to be silicones none of that with hangers, nice job mate 👍

[@spanishpeaches2930]

Top tip Robin. Whenever I used to install plasterboard and had access from the space above, I always used some plasterboard offcuts and Gripfilled( along the length obv) strips over the joints from above as well as scrimming from below. You never get any future joint cracks...well I haven't in all the plastering I've done on my own properties over the years.

[@ukconstruction]

Great way of dealing with the offcuts as well mate!! like it!!

[@chrisohanlon69]

Exciting stuff, but we wanna see more. I could watch 2 hours of this

[@chippy1238]

Great vids as usual Robin. Any more info on your roofing square and app?

[@thetallcarpenter]

Properly got my carpentry juices flowing on this one now Robin. (looks like its got yours flowing too mate🤩)

[@ukconstruction]

Yes Del!!!

[@badsmell4009]

Iv had these joists and some have been unbelievably twisted so all that work on wall plates just goes to the dogs, great vid keep up the good work 👍

[@ukconstruction]

Well I would send them back!! it really depends on the manufacturer I reckon

[@danielbuckner2167]

Spot on with the layout. Robin, weird question but we are about the same size and i notice your work pants arent terribly baggy. What brand are they and how true to size are they? Thanks!

[@nigelweaving9045]

This makes me want to tear down my 1960's 'friday afternoon house' and start again.

[@acciid]

Exactly what I've done. It's not something to rush into, believe me. Three years in and we're finally digging foundations.

[@nigelweaving9045]

@@acciid To be honest, at my age it isn't worth the grief. If I could afford it, both time and moneywise, it's easier to just build a new house elsewhere.

[@acciid]

@@nigelweaving9045 Agree 100%. In my case, we're settled where we are. Kids at school etc. We were in an Edwardian terrace before and wanted a house with a decent garden, off-street parking etc. Finding something like that around the bit of London I live in is nigh on impossible. But we found one and thanks to planning rules which said we couldn't extend the 1960s bungalow, we had to knock it down and replace it. Mad, isn't it?

[@adamandlorraine]

Wish my builder had used those joists. My timber joists in our extension give more floor bounce than a trampoline park.

[@dazzledcaroline]

Loving the channel Robin, you even got a mention on build with A&E last week, another great channel. What is the cost compared to traditional joists. I'm planning a 5x4m sun room at the moment, with a roof lantern? I'm really liking the eco joist for it.

[@ukconstruction]

I would say that these joists are probably 50% more on a small job like your summer room but once you get onto bigger areas the costs even themselves out IMHO

[@dazzledcaroline]

@@ukconstruction thanks, that's great to know. 👍

[@edwardwelch6666]

How do these joist compare to I-joists? Would be great to hear your opinion as I don't have much experience with metal webbed joists but always fancied using them

[@FiscalWoofer]

So I’m in acoustics and find the only issue with the engineered joists is they creek really annoyingly over time as you walk over them. Don’t know if you have found that? It’s like a rapid pinging sound per step and return tension. This series is simply stunning Robin! Thank you!

[@ukconstruction]

I have never experienced any issues with noise from these joists. The first time I used them was in 2003 and I lived in that house for 12 years and they where super quiet and solid, I have 288m2 of joist at my current place and they are super silent too, it depends on the correct installation, It may be that there is something touching the metal web like a pipe and this may cause the noise, seen that before!! Thanks for watching!!

[@johndavenport7281]

My experience of Posi joists creaking has been of strongback bridging not being fitted on site so that bracing only acts across the floor decking. A rarer cause is if the camber hasn't been applied correctly in their manufacture so that they don't "crown" and set the whole joist into correct tension, the resulting slackness allows the metal webs to move and then creak. Contact with pipework ducting etc may occur but I'd expect it to be more localised.

[@richarda5983]

A lot of creaking actually comes from the nailing of chipboard. I remember the old Trussjoist I-Joist, they advertised as silent floor but had no end of squeaking issues. That was a result of nails being used. Swap to screws and it solves a lot of the issues.

[@JACKATTACKED]

👍

[@davetaylor4741]

Looks good. Really jealous. Ordered my floor joists and framing end of May. Still haven't come. Latest date proffered October 14th. The shortages in Oz are killing as are the massive price rises. Will be lucky to break even on this latest house if I ever get any materials. Shut site start of July. Australia has returned to being a prison colony. Saw a cartoon the other day entitled what the World's biggest prison looks like from space. It was a satellite picture of Australia. Spot on. Keep up the good work this house is going to be fantastic.

[@normanboyes4983]

Yeah But at least you are getting nuclear subs.😉

[@davetaylor4741]

@@normanboyes4983 This is true. Country is broke but can still find money for weapons.

[@normanboyes4983]

@@davetaylor4741 it would be a much poorer place if the Chinese took Australia over though.

[@davetaylor4741]

@@normanboyes4983 They already own most of it and NZ.

[@Morning_Rays]

Thank you Robin for your videos. Are Posi joists affordable when compared to traditional joists?

[@ukconstruction]

Yes, especially when you consider all the trades that follow who can thread all their cables and pipes in without damaging or cutting the solid joists!

[@madgebishop5409]

1:30 might wanna check that joist on the top, got a right wobble in the middle of it

[@ukconstruction]

They do have some slight irregularity but this is pulled out with the strong back

[@timbarry5080]

I find that sections of black siding end up looking like uncovered tarpaper, at a glance

[@Oli_Hudson]

Nice Caddy there Robin!! Is it one of your co-workers? Cheers

[@ukconstruction]

Yes mate we go back decades us two!!

[@user-nh7nm9en2v]

Great work with posis (metal web) floor trusses. How much maximum span of trusses

[@ukconstruction]

That will depend on the joist height, i have used some spanning over 6m these where about 400mm tall though

[@user-nh7nm9en2v]

Thanks.. . In which software you are designing Posis trusses please

[@therealdojj]

just like playing with a big lego set

[@Marvelousmelody631]

Hi Robin, can you use joist hangers with posi joists and can you join them together?, thanks.

[@ukconstruction]

Hi Habib, yes you can join the joists at right angles etc with the correct hangers or timber to timber connectors, generally when you order these joists the manufacturer will put together all the joists, trimmers, trimming joists and trimmed joists and their respective metalwork in the design, they are fabulous!! Slightly more expensive than regular solid joists but the saving in labour fitting these far out weighs the cost, hope that helps mate

[@kenmoore7725]

My floors are built with a very similar product. They squeak very much, they flex. A burglar would have trouble moving about waking us.

[@Pete7777777]

Nice job but where's your edge/fall protection?

[@marcusskidmore6913]

doesn't need it

[@shizzleinthenizzle]

restraint straps ?

[@ukconstruction]

Yes we fit the straps once all the joists and rafters are in

[@niwdooglliw]

Are you allowed to cut the ends of those trusses? In the US they aren't solid wood like that.

[@ukconstruction]

we specify them with a trimable end

[@eddyz67]

do u need hering bone struts with them new joists

[@ukconstruction]

No we use a single length of timber known as a Strong back threaded through the joists in a particular spot, this only applies to spans over about 3m

[@neilhayter5770]

Sorry for negative comment but you could do with a bit more scaffolding on the outside edge protection etc and crash deck inside. I know its a pain and cost but if something god forbid happens to you or your help. Sorely you pass this cost on to the clients?

[@kornelk.9417]

Very good Trademans 👍 But shocking this paper houses in UK... like fart in room and whole street will wake up...

[@tentonhammer5469]

How thick do you want the walls? The house is detached and in middle of nowhere so no problem with farts. But yes I have lived in attached houses where you could hear the neighbours having sex etc but these were built many years before stereos tvs and inconsiderate neighbours existed

[@ToraKwai]

Not quite sure what you mean by paper houses, they're all brick built, external walls are with a 9" solid or 300mm cavity, 9" being the old style. Granted some of the old terraces only had a 4" dividing wall but there are plenty of ways to remedy that these days with acoustic matting and/or acoustic plaster board. Goes a long way to stop noise transference. Also keep in mind that there is a lot of history in the UK so what might be the case for a certain type of house it will never be a rule for the vast majority of the housing here

[@dominiquebrown2890]

Do they sell these in the united states?

[@ukconstruction]

I reckon that they would be available in the US

[@jamesmurray9481]

Where has the diamondback gone 🤔

[@ukconstruction]

This was filmed pre diamondback!!

[@eddjordan2399]

dwb?

[@ukconstruction]

Pasquill!!

[@Samwise457]

Whats happend to your van robin?

[@ukconstruction]

My bad driving!! I took out my neighbours post box on the gates!!

[@Samwise457]

@@ukconstruction niceeee! Looks like an expensive repair!

[@floatybisquit]

If no one’s told you Aldi is doing 9 pencils for £1.99 and a free sharpener 😂😂

[@TheSudsy]

got them for fathers day :)

[@dielauwen]

Overbuilt i think. The trusses are available in steel and are commonly used in Commercial buildings. Corrugated steel is laid over them and some concrete is poured and leveled.Since you are doing masonry ,Why not?

[@ukconstruction]

The weight is so much more for the Holowrib and concrete type floors and with our metal web joists we can run services in the floor zone very easily

[@nigelsmith1198]

Unfortunately they are not cheap.!

[@MikeHarris1984]

Building standards over there seem to be really lax.... non-treated lumber on top of brick, and mortared directly in???

[@ukconstruction]

Hi Mike, Our timber truss manufacturers use a clear treatment so unlike some of the Tanalised material it all appears to look untreated

[@jamiefors5062]

Non-treated 😂😂😂

[@MrVodkaJohn]

Only standard that seems to differ is where the roof and the walls tie together. Though without hurricanes and F5 tornadoes. It's probably not needed. Though if a Tornado rolls through I'd rather replace a roof than the whole building. So there used to be a thought process and design behind leaving a weaker connection at the top plate.