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Green Building Bible, Fourth Edition
Green Building Bible, fourth edition (both books)
These two books are the perfect starting place to help you get to grips with one of the most vitally important aspects of our society - our homes and living environment.

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    • CommentAuthorPord
    • CommentTimeDec 13th 2021
     
    Has anyone found a simple and safe way to access a box profile metal duo pitch roof (35deg) without scaffolding? My roof ladder with ridge hooks won't stay on securely because the metal sheets are too slippy. I've tried tying it down etc but it's too fiddly and unreliable.
  1.  
    I can stand on mine (on the flats never on the ridges) but its nervy because it is getting rusty. I stand on the screw heads as they indicate there is a purlin underneath. I prefer to work off a roof ladder which does stay put, mine is not as steep as yours.

    To reduce the risk I have considered wearing a harness and clipping a fall arrest line on to screw eyes which I would screw through into the purlins near the ridge, they could also be used to fasten the ladder to. I haven't yet had a big enough job that would be worth spending the extra time on the roof installing them. Search online for those systems.
    • CommentAuthorphiledge
    • CommentTimeDec 13th 2021
     
    Throw a rope over the building, fasten to the top of the roof ladders, pull the ladders up and secure the rope to a tree/vehicle etc.

    If you want to move around on the roof use a climbing harness, carabiner and prussick loop.
    • CommentAuthorEd Davies
    • CommentTimeDec 13th 2021
     
    I've been putting corrugated roofing sheets on a 60° slope A-frame roof. The advantage of the A-frame here is that I can lay the ladder (scaffold tower bits, actually) on the roof (on battens to stop scratching) with the bottom on the ground. The ridge is about 6 metres up, though, and I have sometimes got off the scaffold tower to make my way along the battens so, yep, for all but the lowest bits +1 to philedge's climbing harness, carabiner and prusik [¹] loop. I just use it as a safety, not as the primary means of support.

    [¹] Prusik, one “s” for anybody searching: https://www.animatedknots.com/prusik-knot
    • CommentAuthorPord
    • CommentTimeDec 13th 2021
     
    Thanks all so far. The screw eyes near the ridge are a good idea. I've tried various configurations of throwing a rope over the top and have found it's a much better idea in theory than in practise. I also need a reasonably stable (but moveable) position to work from to install solar panels and a couple of roof vents.
    • CommentAuthorGareth J
    • CommentTimeDec 13th 2021
     
    If you're putting panels on via screwed on brackets, you could set up a flat working platform that bolts to the next set of brackets. Attach panels to the previously laid brackets and screw the next brackets on before you move the platform. Working along the roof.

    Still need a harness for safety
  2.  
    if your putting up a decent size solar systems just get a scaffold , It'll make your life far far easier
    • CommentAuthorSteveZ
    • CommentTimeDec 14th 2021
     
    Would a short batten fastened across the hook ends on your roof ladder to spread the grip area help? A rubber strip added to the working face might increase the grip as well.

    I made a bracket to join the two sections of a Clima ladder together which reached the ridge on our bungalow in a straight line from the ground, a bit like the method suggested by Ed above
    • CommentAuthorrevor
    • CommentTimeDec 15th 2021
     
    Can you remove some of the sheet fixings make a few wedges at the pitch of the roof and fix in place along the length at convenient point using the securing holes and place a plank across. Place the odd screw into the plank and wedge to avoid it skating off i.e. make an in-situ platform. May take a while to set up up but then you will have not have to keep moving your access ladder. Still wear a harness though.
  3.  
    AIUI the duty of a roofer's harness is quite different from a climber's harness. Climbers use long lengths of soft stretchy nylon rope to absorb the energy of a fall, and a ascender/decender/prusik to slide along the rope if there isn't someone else belaying them. Roofers use relatively short, tough, webbing strops so as not to fall far, with energy absorbing tearaway sections. The harness loop is at chest rather than waist height. I'm far from expert at climbing or roofing, but I would have tended towards a roofer's harness, horses for courses and all that.
    • CommentAuthorSimonD
    • CommentTimeDec 15th 2021
     
    Posted By: WillInAberdeen I would have tended towards a roofer's harness


    Yes, absolutely. A roofers fall protection kit with suitable anchor. Essential I think on a metal roofs as it can get very slippery. I have a couple of these kits - one extremely well used the other kept as a spare:

    https://www.frontline-safety.co.uk/miller-titan-roofing-kit
    • CommentAuthorPord
    • CommentTimeDec 16th 2021
     
    Thanks all for comments and suggestions.
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