lord_seagrave Posted May 3, 2018 Report Share Posted May 3, 2018 Chaps, Will try to explain. I’m attaching bespoke trellis to some tall fence posts. I’m not 100% convinced that the horizontal batons are strong enough with just a couple of screws holding them to the fence posts - the screws look too close to the ends. So, I reckon I’d like a couple of metal brackets that fit around the horizontals to strengthen the joints. So, the fence posts are supposed to be 75mm square but generally are slightly under (74mm), and the horizontals are 32mm square ish. I want four brackets that will cover the top of the fence post and the top horizontal. I also need twelve brackets that will wrap the horizontals only. They need to be matte black and weatherproof. Anyone out there who can point me in the right direction or can make something up? LS Quote Link to comment Share on other sites More sharing options...
scotslad Posted May 3, 2018 Report Share Posted May 3, 2018 If u pilot drill the rails they should be ok. How far apart are ur posts? Not a massive ammount of strength in 11/2"'s if over a long distnce (6ft is the norm) if they are 6ft distances i'd imagine ur weak spot will be the rails themselves. Normally u'd use 3x2's or something similar of fences, altho trelis work is usually sort of self standing so u just anchor it to the posts itselfand don't usually put battens behind it. If ur really concerned i'd put extra battens rathers than renenforcig the joints Many decent ironmongery shops would have a selection of 90 degree brackets, prob galv so u'd have to spray them black ur self Quote Link to comment Share on other sites More sharing options...
JDog Posted May 3, 2018 Report Share Posted May 3, 2018 To take the strain sit the trellis on a suitably sized cross member. Quote Link to comment Share on other sites More sharing options...
Mice! Posted May 3, 2018 Report Share Posted May 3, 2018 16 minutes ago, JDog said: To take the strain sit the trellis on a suitably sized cross member. This was my thinking, just run some 3*2 top and middle between fence posts line them up so there in line with your trellis, i doubt you'll notice them once everything is painted and things are growing Quote Link to comment Share on other sites More sharing options...
PPP Posted May 3, 2018 Report Share Posted May 3, 2018 46 minutes ago, lord_seagrave said: Chaps, Will try to explain. I’m attaching bespoke trellis to some tall fence posts. I’m not 100% convinced that the horizontal batons are strong enough with just a couple of screws holding them to the fence posts - the screws look too close to the ends. So, I reckon I’d like a couple of metal brackets that fit around the horizontals to strengthen the joints. So, the fence posts are supposed to be 75mm square but generally are slightly under (74mm), and the horizontals are 32mm square ish. I want four brackets that will cover the top of the fence post and the top horizontal. I also need twelve brackets that will wrap the horizontals only. They need to be matte black and weatherproof. Anyone out there who can point me in the right direction or can make something up? LS That’s going to cost you mate, must be an easier solution Quote Link to comment Share on other sites More sharing options...
lord_seagrave Posted May 3, 2018 Author Report Share Posted May 3, 2018 57 minutes ago, scotslad said: If u pilot drill the rails they should be ok. How far apart are ur posts? Not a massive ammount of strength in 11/2"'s if over a long distnce (6ft is the norm) if they are 6ft distances i'd imagine ur weak spot will be the rails themselves. Normally u'd use 3x2's or something similar of fences, altho trelis work is usually sort of self standing so u just anchor it to the posts itselfand don't usually put battens behind it. If ur really concerned i'd put extra battens rathers than renenforcig the joints Many decent ironmongery shops would have a selection of 90 degree brackets, prob galv so u'd have to spray them black ur self Yup - all pre-drilled, and the longest section which is unsupported is only just 6’ (1800mm). There is a longer section at the front, but that has a corner joint at one end, and I have very smartly morticed the horizontals to those running in at 90 degrees. My concern stems from the fact that these trellis sections are only the top 2’ (600mm) of posts that are 10’ (3000mm) high. I’ll be fan-training fruit trees in the 8’ x 6’ gaps underneath. It’s a sheltered spot, but I’m nervous about wind damage, especially when it’s got a climbing rose or wisteria all over it. LS Quote Link to comment Share on other sites More sharing options...
lord_seagrave Posted May 3, 2018 Author Report Share Posted May 3, 2018 What about some angle iron? That’ll do it, right? Just some little 74mm (or whatever) bits of angle iron nestling under the horizontals to take some of the weight, yup? LS Quote Link to comment Share on other sites More sharing options...
millrace Posted May 3, 2018 Report Share Posted May 3, 2018 Go to local builders yard or online galvanised joist hangers various sizes just nail/screw on and wrap tails round post if bothered spay black...... Quote Link to comment Share on other sites More sharing options...
grrclark Posted May 3, 2018 Report Share Posted May 3, 2018 (edited) The other option is the get some galv or stainless builders band, it is maleable enough the you could wrap it over the post and around your horizontal rails to get the same result as in your sketch, just that it wont be the full width of the post. paint it out and it will be discrete enough. It’s also cheap as chips and you get a muckle great roll of it. Edited May 3, 2018 by grrclark Quote Link to comment Share on other sites More sharing options...
Potter64 Posted May 3, 2018 Report Share Posted May 3, 2018 Why don't you get some 30 X 30 X 3 angle between posts,drill holes every 300 mm sit your trellis into it one third of way from bottom and top paint it black you won't see it Quote Link to comment Share on other sites More sharing options...
Brad93 Posted May 3, 2018 Report Share Posted May 3, 2018 I can do it but there is quite a bit of time in it. Personally for a painted finish I would use hammerite and top it up every five years. If you want it to last forever galvanise it. Material thickness? 3mm or so? Quote Link to comment Share on other sites More sharing options...
Mice! Posted May 3, 2018 Report Share Posted May 3, 2018 Or buy some galvanised box section and cut out one side, you might be over thinking it? Quote Link to comment Share on other sites More sharing options...
grrclark Posted May 4, 2018 Report Share Posted May 4, 2018 A super simple option is stick a dab of gorilla glue or waterproof pva between your rail and the post, once that sets it wont come off. Quote Link to comment Share on other sites More sharing options...
amateur Posted May 4, 2018 Report Share Posted May 4, 2018 12 hours ago, lord_seagrave said: What about some angle iron? That’ll do it, right? Just some little 74mm (or whatever) bits of angle iron nestling under the horizontals to take some of the weight, yup? LS This is the simplest - except that you will have to paint it (use Hammerite). The glue or builders band options look good too Quote Link to comment Share on other sites More sharing options...
scotslad Posted May 4, 2018 Report Share Posted May 4, 2018 I'd be inclined just to increase the batten thickness and use a bit o 3x2 or something Another option would be to srcew a block of timber below and above and screwing all round, or putting a face on it to, but to be honest the srews should be strong enough, for the size of timber If ur posts are 10ft out the ground, i hope they're well dug in (3ft+) and concreted. At that hieght i'd be more worried about the post's snapping (i would of went for 4" post's) might be worth putting some angled stay's up, but it all depends how much wind they'll catch Quote Link to comment Share on other sites More sharing options...
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