Crofter Posted August 6, 2016 Share Posted August 6, 2016 Next stage in the exterior of my house is to fix the 50x50 battens horizontally over the top of the 25x50 vertical counter battens. This will create a ventilated drainage space and provide the structure that the vertical board-on-board larch cladding will be nailed to. Before I go and splurge out on a few boxes of these (150x6mm screws) is there any sort of rough rule of thumb etc I should be considering for choosing what length of screws to use? My gut feeling is that, with 75mm thickness of battens to pass through, I should have the same again going into the studs. There are going to quite a lot (over a thousand, from my BOTE calculation) of these screws going in so I could easily end up spending a fair bit on this if I over-spec, but on the other hand I don't really want my walls to fall apart either Link to comment Share on other sites More sharing options...
Onoff Posted August 6, 2016 Share Posted August 6, 2016 Can't help advising on lengths etc but is it worth looking elsewhere for the screws? I posted this before about the place my mate got bulk screws for his large decking project. You can translate the link page to English: This was the company my mate used: https://www.klokow-gmbh.de/ He wrote: "This is the company I got the spax decking screws off. I found they were really good and delivery was rapid as well. " Link to comment Share on other sites More sharing options...
Crofter Posted August 6, 2016 Author Share Posted August 6, 2016 Danker... no spraken ze Deutsche... time to phone a friend I think Link to comment Share on other sites More sharing options...
Tennentslager Posted August 6, 2016 Share Posted August 6, 2016 Get the nail gun out... solid , quick and you could hang off a batten like an Olympic gymnast Link to comment Share on other sites More sharing options...
Construction Channel Posted August 6, 2016 Share Posted August 6, 2016 150s seem a bit excessive to me. How did you fix the 25x50 battens? Link to comment Share on other sites More sharing options...
Crofter Posted August 6, 2016 Author Share Posted August 6, 2016 The 25x50 battens are fixed with 50mm nails, put in by gun. Screwfix have some 1000 packs of 100mm screws on special at the moment.. very tempting but that leaves only about an inch going into the studs... Link to comment Share on other sites More sharing options...
Onoff Posted August 6, 2016 Share Posted August 6, 2016 7 minutes ago, Crofter said: The 25x50 battens are fixed with 50mm nails, put in by gun. Screwfix have some 1000 packs of 100mm screws on special at the moment.. very tempting but that leaves only about an inch going into the studs... No different to the "inch" you've got attaching the 25x50s.....Nail gun will be quickest. You can translate that page to English as I said. Should get the option automatically on the phone. Link to comment Share on other sites More sharing options...
DavidFrancis Posted August 6, 2016 Share Posted August 6, 2016 This might be a stupid question, but why do you need 50x50 horizontal battens? What's wrong with more 50x25? Link to comment Share on other sites More sharing options...
Crofter Posted August 6, 2016 Author Share Posted August 6, 2016 Just now, DavidFrancis said: This might be a stupid question, but why do you need 50x50 horizontal battens? What's wrong with more 50x25? I was advised that I needed 50x50 to give sufficient stiffness, since the battens are only supported every 600. You wouldn't want to lean against the wall and find it bowing! The 25x50 battens lie directly against the wall so are fully supported, and just provide a drainage gap. Link to comment Share on other sites More sharing options...
Construction Channel Posted August 6, 2016 Share Posted August 6, 2016 Realistically you will get about 1 1/4 in the stud by the time you have buried the head a bit. And as the first set of battens have already been fixed you only technically need to fix to those. I wouldn't be worried only useing 100s for this. It's not exactly taking a lot of weight anyway. Link to comment Share on other sites More sharing options...
ProDave Posted August 6, 2016 Share Posted August 6, 2016 I might have close on 300 or even more 150mm screws going cheap. Link to comment Share on other sites More sharing options...
iSelfBuild Posted August 7, 2016 Share Posted August 7, 2016 We actually used 200mm hexagon head screws to fix our vertical 50mm x 50mm battens to the framework, because they are holding 75mm of external wall insulation on. Then we used 25mm x 25mm horizontal battens - which take the vertical larch cladding. Link to comment Share on other sites More sharing options...
Crofter Posted August 7, 2016 Author Share Posted August 7, 2016 14 hours ago, ProDave said: I might have close on 300 or even more 150mm screws going cheap. Could certainly be interested, but I'm budgeting on £10/100 from Toolstation at the moment, would you be able to undercut that? Link to comment Share on other sites More sharing options...
Crofter Posted August 7, 2016 Author Share Posted August 7, 2016 57 minutes ago, iSelfBuild said: We actually used 200mm hexagon head screws to fix our vertical 50mm x 50mm battens to the framework, because they are holding 75mm of external wall insulation on. Then we used 25mm x 25mm horizontal battens - which take the vertical larch cladding. No counterbattens under those? Quite a different wall buildup to me, bet it'll be cosy though! Did you chamfer the top edge of the battens? My windows are in by the way, looking good! 1 Link to comment Share on other sites More sharing options...
iSelfBuild Posted August 7, 2016 Share Posted August 7, 2016 (edited) Nope, the 75mm XPS fits tight against the external OSB. 50mm battens screwed into the studs make them structurally strong enough to hang the larch cladding on the counter battens. Yes I'll take some detailed photos next time I'm on site. Fantastic! Have you got photos? Did you manage OK with the slider? I have some adjustable fixing brackets for the window cills that you can have for free if you like. They were quite expensive and my Dad has decided to not use them because the way the cills hook tight under the rebated lip on the windows. Edited August 7, 2016 by iSelfBuild Link to comment Share on other sites More sharing options...
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