I depends which anchor you use. We use a guardian anchor, and it can be used on a roof face or over the ridge. There are probably 150+ varieties of roof anchors.
The one we use requires 12 16d nails into a rafter, or 20 in a different pattern through the sheeting.
>We use a guardian anchor, and it can be used on a roof face or over the ridge. There are probably 150+ varieties of roof anchors.
Thanks. I've only seen the same kind of design locally. I just searched the web and see others now. I also saw a Guardian similar to my reusable Dynamic (which looks like this [PeakWorks](https://www.lowes.com/pd/PeakWorks-Reusable-Temporary-Steel-Roof-Anchor-Bracket-Red/5000027695)) which states it can be used on flat roofs i.e. not just over the ridge. That might be one of my answers.
Oddly, by comparison, my instructions say to anchor it with only 10 x (8 x 2 1/2 screws) 5 per side, just using the middle set of screw holes. Seems rather inadequate compared to yours.
Man when I was roofing I would only put 4 screws or nails on one side as long as they hit a stud. Usually I would keep the thing folded over (closed) so it would not be on the side I was roofing and I could work right to the edge. You can stick the thing right flat anywhere on the roof as long enough screws are in the stud. You can also just wrap the rope around things like studs. I'm new to the sub and I'm curious to how this is going to be received by the community.
Well, ohsa says 5000lbs, but in reality 1800lbs is likely the greatest force you would see. So4-5 nails or screws probably won’t fail.
However, you would fell pretty dumb if you fell, the anchor yanked out, then you hit the ground, and the anchor bonks you on the head on its way down.
I used to know a guy who used 2 framing nails all day. Also I would never use fall arrest on anything more than 8/12 only fall restraint. And I wouldn't use a harness on 7/12 and under. When I first started roofing I worked for. Company that only did 10/12 and up and most of them didn't wear harnesses 🔫🤠
Most roofers don’t tie off/use harnesses.
It is why in 2020, 55 out of every 100,000 roofers died. That is roughly 1 in 2000.
Meanwhile, 13 out of every 100,000 law enforcement officers died that year.
Roofers are 4x more likely to die than cops, because they don’t do nearly enough to mitigate the risks.
I agree way to much risks are taken. I was young and dumb, grew up had a kid and started to take way less risks, always tied off and used a 5 point harness. More anchors and ropes right from the beginning so they are always there. Ultimate I stopped roofing because I fell off a garage not tied off and broke my foot. But I still used 4-6 nails.
I had a similar situation, and I called Werner for advice, since I'm using their A230302W anchors.
The first guy I talked to wasn't sure, so he asked their specialist. They told me to lay the entire anchor over a single rafter rather than folding it across the ridge, and then put all of the nails into that single rafter.
I think it still has to be a common or jack rafter though, if you install it in parallel with a ridge board or hip rafter then you're going to be side-loading the anchor, rather than front-loading it.
I depends which anchor you use. We use a guardian anchor, and it can be used on a roof face or over the ridge. There are probably 150+ varieties of roof anchors. The one we use requires 12 16d nails into a rafter, or 20 in a different pattern through the sheeting.
>We use a guardian anchor, and it can be used on a roof face or over the ridge. There are probably 150+ varieties of roof anchors. Thanks. I've only seen the same kind of design locally. I just searched the web and see others now. I also saw a Guardian similar to my reusable Dynamic (which looks like this [PeakWorks](https://www.lowes.com/pd/PeakWorks-Reusable-Temporary-Steel-Roof-Anchor-Bracket-Red/5000027695)) which states it can be used on flat roofs i.e. not just over the ridge. That might be one of my answers. Oddly, by comparison, my instructions say to anchor it with only 10 x (8 x 2 1/2 screws) 5 per side, just using the middle set of screw holes. Seems rather inadequate compared to yours.
A 16d nail has 585lbs of shear strength. So 10 nails goes over 5000lbs. Hitting solid structure and pull strength is where it’s at
Man when I was roofing I would only put 4 screws or nails on one side as long as they hit a stud. Usually I would keep the thing folded over (closed) so it would not be on the side I was roofing and I could work right to the edge. You can stick the thing right flat anywhere on the roof as long enough screws are in the stud. You can also just wrap the rope around things like studs. I'm new to the sub and I'm curious to how this is going to be received by the community.
Well, ohsa says 5000lbs, but in reality 1800lbs is likely the greatest force you would see. So4-5 nails or screws probably won’t fail. However, you would fell pretty dumb if you fell, the anchor yanked out, then you hit the ground, and the anchor bonks you on the head on its way down.
I used to know a guy who used 2 framing nails all day. Also I would never use fall arrest on anything more than 8/12 only fall restraint. And I wouldn't use a harness on 7/12 and under. When I first started roofing I worked for. Company that only did 10/12 and up and most of them didn't wear harnesses 🔫🤠
Most roofers don’t tie off/use harnesses. It is why in 2020, 55 out of every 100,000 roofers died. That is roughly 1 in 2000. Meanwhile, 13 out of every 100,000 law enforcement officers died that year. Roofers are 4x more likely to die than cops, because they don’t do nearly enough to mitigate the risks.
I agree way to much risks are taken. I was young and dumb, grew up had a kid and started to take way less risks, always tied off and used a 5 point harness. More anchors and ropes right from the beginning so they are always there. Ultimate I stopped roofing because I fell off a garage not tied off and broke my foot. But I still used 4-6 nails.
I had a similar situation, and I called Werner for advice, since I'm using their A230302W anchors. The first guy I talked to wasn't sure, so he asked their specialist. They told me to lay the entire anchor over a single rafter rather than folding it across the ridge, and then put all of the nails into that single rafter.
Thanks for sharing this excellent info. That is how I mounted mine (actually into the larger hip ridge beam) so good to know. Thanks.
I think it still has to be a common or jack rafter though, if you install it in parallel with a ridge board or hip rafter then you're going to be side-loading the anchor, rather than front-loading it.