Cambs Posted September 18, 2019 Share Posted September 18, 2019 I'm now battening out and cladding our flat roof dormers in OSB in preparation for the lead cladding. The dormers are constructed with wood fibre board on the exterior. I can find structural timber behind the wood fibre board to fix the battens to in most cases, but there are a few areas on the cheeks of the dormers where I'll need to attach battens to the wood fibre boards without structural timber behind them. I'm struggling to find and source suitable plugs that I can put into the wood fibre board and then screw the battens to. There's enough support elsewhere that I don't need a great deal of strength. I have found these two potential solutions: https://www.rawlplug.co.uk/product/r-iso-plug-insulation-fixings/ https://www.fischer.co.uk/en-gb/products/fixation-on-etics-insulation/fixing-in-insulation-material/insulation-fixing-fid I'd welcome any thoughts on the best way to do this. Link to comment Share on other sites More sharing options...
Mr Punter Posted September 18, 2019 Share Posted September 18, 2019 A bit like fixing into Weetabix. I like Fischer fixings. They might work well if you drill a nice clean hole the same diameter as the shaft of the fixing. What do the wood fibre manufs suggest? Link to comment Share on other sites More sharing options...
Cambs Posted September 18, 2019 Author Share Posted September 18, 2019 4 hours ago, Mr Punter said: A bit like fixing into Weetabix. I like Fischer fixings. They might work well if you drill a nice clean hole the same diameter as the shaft of the fixing. A bit more Googling turned up some options today - a "spiral anchor" turned out to be the best search term. Fischer do them, as do a number of others. Ended up getting them from Amazon so I can get them tomorrow. About 50p each, so not cheap but that price is similar to most of the suppliers. Link to comment Share on other sites More sharing options...
jfb Posted September 18, 2019 Share Posted September 18, 2019 I've used the fischer fixings on woodfibre board and they are pretty good and surprisingly strong. 1 Link to comment Share on other sites More sharing options...
Russell griffiths Posted September 18, 2019 Share Posted September 18, 2019 How about D4 wood glue, since using it on my floorboards I’m finding uses for it everyday, will tear the wood fibre apart before you separate the batten from it. 1 Link to comment Share on other sites More sharing options...
Cambs Posted September 18, 2019 Author Share Posted September 18, 2019 2 hours ago, Russell griffiths said: How about D4 wood glue, since using it on my floorboards I’m finding uses for it everyday, will tear the wood fibre apart before you separate the batten from it. Good idea - fixings are on their way, I’ll put some of this on too. It’ll all help. Link to comment Share on other sites More sharing options...
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