Can anyone say something about how and when, if ever, asphalt putty hardens? I've tried googling but haven't found an answer.
I've used asphalt putty (Trebolit) to level some stone edges so that they become almost completely flat but still hard enough to rest a rigid sheet and some stone slabs (34 cm) against them without larger gaps. I don't want a lot of mess on the sheet and stone slabs. The material seemed promising when I saw it on the store shelf, but after spreading the asphalt putty on the stone edges, I noticed it was more liquid than I had thought. And a test repair I did just before dried extremely slowly. I haven't been able to check the result today, but my fear is that it has continued and will continue to spread out for hours and days and essentially never dry completely. If it just remains a bit sticky, it can be salvaged with some fabric or paper on top, but in one place, I need to build up 6-7 millimeters to get the edges flat. I tried to build there by alternating the putty with a fabric I found on a nearby shelf in the store, but it was quite sparse, and I now suspect that the putty is slowly sinking straight through and out on the sides.
If this material never hardens properly, it's better if I scrape away most of it and start over with something else. If it dries within a few days, I can leave it and make the best of the situation then.
Grateful for responses
I've used asphalt putty (Trebolit) to level some stone edges so that they become almost completely flat but still hard enough to rest a rigid sheet and some stone slabs (34 cm) against them without larger gaps. I don't want a lot of mess on the sheet and stone slabs. The material seemed promising when I saw it on the store shelf, but after spreading the asphalt putty on the stone edges, I noticed it was more liquid than I had thought. And a test repair I did just before dried extremely slowly. I haven't been able to check the result today, but my fear is that it has continued and will continue to spread out for hours and days and essentially never dry completely. If it just remains a bit sticky, it can be salvaged with some fabric or paper on top, but in one place, I need to build up 6-7 millimeters to get the edges flat. I tried to build there by alternating the putty with a fabric I found on a nearby shelf in the store, but it was quite sparse, and I now suspect that the putty is slowly sinking straight through and out on the sides.
If this material never hardens properly, it's better if I scrape away most of it and start over with something else. If it dries within a few days, I can leave it and make the best of the situation then.
Grateful for responses

Wrong product for your purpose, asphalt putty is used for roofs. Why didn't you use something cement-based like mortar or house fix when it's stone you need to level?
In response to your question: I thought the material seemed promising when I saw it on the store shelf, so it was somewhat by chance. The stones are on a roof and I don't want to wander around mixing cement that I have zero experience with (just like everything else related to construction), so I've glued them with stone adhesive. Additionally, I'm afraid of heights and want to make things as simple as possible.
Does the asphalt sealant harden or not?
Does the asphalt sealant harden or not?
Thanks! I just checked and I think you're right that it never hardens. A rubber-like mass would have been perfect, but the capacity to spring back seems to be zero. I also think it will stick if something heavy is placed on it in the next few months. That's probably why it seals so well. Husfix would have been the right choice.
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