Plaster typically comes in three types: Gypsum plaster, which is excellent for sound-proofing and fire retardation, is made by mixing dried plaster powder with water and allowing it to set; Lime plaster is made by mixing the plaster material with water and sand.
This produces a very mold-resistant plaster; Cement-based plaster is great for outdoor walls, and is made to endure weather conditions. It can often be mistaken for stucco. Plaster Offers More Design Options One of the biggest reasons to choose plaster is that it allows for far more aesthetic options than drywall or other finishes.
Plaster Absorbs Noise for Better Acoustics If you have a space where you want better acoustics, such as a home studio, a home theater, a rehearsal space, or simply your home office, plaster is an excellent choice.
Plaster Can Be Art One reason that many homeowners love having plaster instead of drywall is that it can become a form of stylish design. Plaster Is Perfect for All Jobs One issue that many contractors have with drywall is that it makes a big mess when you try to make it fit a smaller area.
What You Need to Watch Out for with Plaster With all these fantastic benefits for using plaster, there are very few reasons to not give this material a try. Share This Post With Others! Related Posts. February 24th, 0 Comments. Sterile hygienic dressing pads come in a protective wrapping.
Once out of the wrapping, they're no longer sterile. Plasters are made from a piece of gauze and have a sticky adhesive backing. They're usually wrapped in single sterile packs. They sometimes come in different shapes and sizes, or you can cut them to size. We know that it was used by the ancient Egyptians to plaster the pyramid at Cheops. Our knowledge of the use of gypsum plaster prior to the 19th century is limited. However Claire Gapper's research shows that it was being used in the 16th century with lime in floors, walls and ceilings, but decorative plasterwork, which was previously assumed to contain gypsum, is proving to contain only minute traces; the sort of levels at which one would find it as an impurity in limestone.
This contrasts with the use of gypsum over the last years, when it was predominantly used for casting decorative elements and for gauging lime when running mouldings, whilst most flat work has been executed using plain lime plasters. For small decorative embellishments such as scrolling leaves, fruit, figures and heraldic devices, cast decoration allowed repetition. Gypsum or Plaster of Paris allowed crisp details to be produced as it was harder than lime and set before it was removed from the mould.
Furthermore, casting in lime is more time consuming than using Plaster of Paris, because the lime has to be used very stiff and has to be punched into the mould. Nevertheless we find in 18th century work that casts were sometimes made in lime rather than gypsum.
Its advantage is that, after being turned out of the mould, it can be tweaked and adjusted whilst it is still soft, allowing minor variations in detail from one cast to another. The use of lime and gypsum in different cases may have been partly to do with different local traditions, but may have as much to do with the availability of materials.
Later on, working methods and the materials used became more standardised. Our understanding of plastering methods and practices from the end of the 19th century is very good, thanks to William Millar's excellent book, Plastering - Plain and Decorative , which was published in It describes 'best practice' working methods from the period, and established standards to which good plasterers have aspired ever since.
We know that gypsum was readily available throughout the 19th century and was used almost all the time to gauge lime mixes for running mouldings, as well as being used on its own, for cast work. We need to understand a lot more about the history of the production of gypsum plasters in this country and also about their availability in different parts of the country, before we can fully understand why they were being used differently. In Derbyshire, for example, we know that alabaster was being burnt to make gypsum plaster in the 17th century, particularly for floors, whilst in other parts of the country gypsum was being imported from Paris.
This may have been simply because the French plaster was purer, but it may also indicate that they were used for different purposes. Although the interest in the composition of old plaster may appear slightly academic it is an important part of repairing on a 'like for like' basis. But many people believe that a wound needs to be left exposed to the air to help it heal more quickly. So what is the truth? Many people say that a wound should be left uncovered to allow it to breathe.
It can be argued that sometimes keeping a wound dry can allow it to heal. However, keeping a wound moist is often the most helpful thing to do. There are times when leaving a wound uncovered could be the right choice. For example, some small cuts that are unlikely to be rubbed by your clothes or become dirty can be left without a covering.
Once a wound has started to heal and has scabbed over, you might also want to leave it uncovered. There is also evidence that air can help the healing process, so there is a benefit to leaving a wound uncovered. However, leaving a wound uncovered can have disadvantages. Even a small cut or scratch could become infected if it gets dirty.
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