You can definitely plaster over plaster under certain conditions. 2 reasons why you can plaster over plaster Once you have fixed the existing plaster, you are all set for putting a new plaster on the wall. You should definitely fix the cracks and holes on the existing plaster before you put in a new one. So you do not have to remove old plaster before plastering, but you should fix the cracks, holes, or blown areas in the plaster. However, removing the entire plaster altogether seems like a very hard job as well. Since plastering needs a smooth, adhesive surface, a dry, existing plaster cannot ensure that. While you can plaster over plaster, it is not recommended. Do you have to remove old plaster before plastering? Once you have addressed all the cracks and holes on the plaster, you can plaster over the existing one. You will first need to fix the plaster underneath. ![]() It will not solve the issue, but rather worsen the problem with the weight of the plaster. You should not plaster over a wall that is blown or has sustained cracks. On the other hand, an already plastered wall appears to be super dry, which does not make a very welcoming surface for the plaster. Note that when you are plastering a wall, it will require an adhesive surface underneath. But there are several factors that you will need to keep in mind. The simple answer to this query is that you can definitely plaster over plaster. ![]() To make matters easier, people often wonder whether they can plaster over the existing plaster. You may feel the need to put on a new layer of plaster in your home or office. Can you put new plaster over old plaster? And a dry plaster will not be able to serve it. Then you should fill those areas and layer plaster over that. So you should remove the blown areas first. In fact, the weight of the new layer of plaster is likely to make matters even worse. Plastering over a blown plaster does not solve the problem. You should not plaster over blown plaster. This will make a much better surface for the plaster. You can install a drywall panel over the existing lath and plaster layer. ![]() But you will have to be very careful about the specifics of the issue. Then you can plaster over the existing plaster. You may use sealant or caulk on the cracks in order to fill them. In this case, you will need to fix the holes and cracks on the wall first. But you cannot plaster over cracked plaster. If the plaster is old and damaged, it may sustain cracks. But you will have to watch out for any dampness or mold in the room. You can plaster lightly with some multi-finish plaster over the lime plaster. But you will have to be quite technical in the process. Let’s take a look at different kinds of existing plaster and whether it would be appropriate to plaster over them: Plaster over lime plaster: This does not solve the problem, rather makes it worse. You should not plaster over plaster, especially if it is dry or blown. You should clean your wall first and then proceed to plaster it.
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