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Greetings. I just found this forum, and I'm hoping I can get some help with my plaster problems.
My house is 130 years old. The walls are plaster over lathing. I've noticed in a lot of interior walls the development of very fine cracks in the plaster. They look as if someone drew thin pencil lines. Some of these have started to form actual cracks. (Photo 1) Most are on stairway walls. In one areas, I've developed a long "bulge" in the plaster (photo 2). The bulge is still firm, however. If I press it, it doesn't flex back to the lathing. There seems to be a thin crack forming along the ridge of the bulge.
In other areas, such as a back stairway, which is not heated, the cracks are very bad. (Photo 3).
Any ideas what causes the cracking? My house is not well-insulated, and it's a weekend house. During the summers, it gets up to 80 or so and in the winters down to 55* (except on those rare power out occasions, when it freezes).
I'm especially curious about the bulge. My contracto has no idea what caused it.
I want to do some painting, but I think I need to address these cracks first. Any ideas would be greatly appreciated.
My house is 130 years old. The walls are plaster over lathing. I've noticed in a lot of interior walls the development of very fine cracks in the plaster. They look as if someone drew thin pencil lines. Some of these have started to form actual cracks. (Photo 1) Most are on stairway walls. In one areas, I've developed a long "bulge" in the plaster (photo 2). The bulge is still firm, however. If I press it, it doesn't flex back to the lathing. There seems to be a thin crack forming along the ridge of the bulge.
In other areas, such as a back stairway, which is not heated, the cracks are very bad. (Photo 3).
Any ideas what causes the cracking? My house is not well-insulated, and it's a weekend house. During the summers, it gets up to 80 or so and in the winters down to 55* (except on those rare power out occasions, when it freezes).
I'm especially curious about the bulge. My contracto has no idea what caused it.
I want to do some painting, but I think I need to address these cracks first. Any ideas would be greatly appreciated.
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