Hello,
We are setting up a small wall measuring 25m x 40cm and so far have laid the first row with adhesive as recommended by the stone seller. Our base wall is quite uneven, so we have tried to even it out as much as possible with the adhesive, but there are sections where it sags a bit more.
Now it's soon time for the next layer, and our plan is to glue the rest with PU700. From what I understand, 1 bottle of PU700 replaces 20 KG of cement, so we shouldn't need too many for our simple low wall (right now we have 5 in the storage).
How do I now get this even and nice? From what I understand, you should put up mason's line? But how do you do this? I suspect the distances should be short; otherwise, you have to tighten the string too hard? I've seen a video where they build up with a couple of layers of stones on each side and then attach the mason's line to these stone layers layer by layer. You could say they build two towers first and then pull the guideline between these towers, which might be about 2 meters apart.
And what do I do when the brick goes far over/under the string? I suspect the stone adhesive only compensates for minor differences between the stones?
We are setting up a small wall measuring 25m x 40cm and so far have laid the first row with adhesive as recommended by the stone seller. Our base wall is quite uneven, so we have tried to even it out as much as possible with the adhesive, but there are sections where it sags a bit more.
Now it's soon time for the next layer, and our plan is to glue the rest with PU700. From what I understand, 1 bottle of PU700 replaces 20 KG of cement, so we shouldn't need too many for our simple low wall (right now we have 5 in the storage).
How do I now get this even and nice? From what I understand, you should put up mason's line? But how do you do this? I suspect the distances should be short; otherwise, you have to tighten the string too hard? I've seen a video where they build up with a couple of layers of stones on each side and then attach the mason's line to these stone layers layer by layer. You could say they build two towers first and then pull the guideline between these towers, which might be about 2 meters apart.
And what do I do when the brick goes far over/under the string? I suspect the stone adhesive only compensates for minor differences between the stones?
Drive stakes into the ground and tension the string between them; depending on the length, you might need to place a stake in the middle. The first round should have been completely straight; it might now be difficult if you're using glue. Otherwise, you may need to switch to fix where it's too low, but then the joints will be uneven.
Here's the tool I'm talking about: [video]https://youtu.be/ExltDReEdno?t=92[/video]
But are you supposed to use poles, like handles/poles for rakes and similar? How many meters between each pole would be reasonable without drooping the line?
Yes, I tried to get it as even as possible but the ridge is obviously very uneven, the joint ranges from 2 cm (which wasn't easy with fix) to just 1 mm. Even though I've had 2 cm to even it out, in some places it's not level, i.e., the bubble is slightly outside the markings. The alternative is to apply another layer of fix, but it takes an enormous amount of time to level with a plumb, it's not just about applying it. Moreover, the joints will likely be uneven as you say.
It's really just one spot where it's visible that it dips into a hollow, maybe I could apply fix just there but I suspect it's actually more than 1 cm off.
But are you supposed to use poles, like handles/poles for rakes and similar? How many meters between each pole would be reasonable without drooping the line?
Yes, I tried to get it as even as possible but the ridge is obviously very uneven, the joint ranges from 2 cm (which wasn't easy with fix) to just 1 mm. Even though I've had 2 cm to even it out, in some places it's not level, i.e., the bubble is slightly outside the markings. The alternative is to apply another layer of fix, but it takes an enormous amount of time to level with a plumb, it's not just about applying it. Moreover, the joints will likely be uneven as you say.
It's really just one spot where it's visible that it dips into a hollow, maybe I could apply fix just there but I suspect it's actually more than 1 cm off.
Here's how one part looks.
http://i.imgur.com/qtTxiT0.jpg
In other words, it's quite difficult to reach to put down stakes. The first layer I have basically done by freehand and with a plumb line, of course. However, it would be convenient if one could use string for the other levels along with a plumb line. I already know that the wall probably won't follow the thread vertically, but it gives me a better picture of the situation; maybe I can compensate with adjustments in certain areas.
http://i.imgur.com/qtTxiT0.jpg
In other words, it's quite difficult to reach to put down stakes. The first layer I have basically done by freehand and with a plumb line, of course. However, it would be convenient if one could use string for the other levels along with a plumb line. I already know that the wall probably won't follow the thread vertically, but it gives me a better picture of the situation; maybe I can compensate with adjustments in certain areas.
I think it will be difficult to put any stakes in the ground here BUT it should be possible to use clamps and screw a couple of sticks to the existing stone even if they are rounded at the front (rounded).
I'll have to try that
I'll have to try that