The Low Down On Natural Material Plasters Exposed
Surface plaster is one of the most basic and transformative techniques in inside decoration. It entails applying a smooth layer of paste to form a final wall that is ready for painting or can be kept as a beautiful textured finish in its own right. The primary purpose of surface plaster is to cover imperfections in the base masonry or plasterboard, to provide a uniform plane, and to provide a degree of protection. Lacking this essential step, walls would appear unfinished and unrefined.
The story of covering walls with plaster is ancient. From the elaborate frescoes of ancient Rome to the graceful whitewash walls of Mediterranean homes, plasterwork has long been the backdrop for human habitats. Traditional methods used materials readily found in the nearby environment, such as clay, limestone, sand, and straw fibres. These earthy mixes produced porous and durable walls that could last for centuries. Contemporary surface plaster still follows these ideas but often uses manufactured gypsum compounds for convenience and uniformity.
There are a few distinct kinds of wall plaster finishes. Basecoat or bonding plaster is a heavy-duty base layer designed for very absorbent surfaces like masonry or block. It provides a strong key for the next coats. This plaster typically has particles to provide durability. Topcoat or finishing DIY Plaster is the last smooth layer that creates the perfect surface for decorating. It is fine-grained and spreads readily to a very smooth-thin finish. Additionally, there are specialty products like soundproofing or insulating types that serve specific functions.
The process of plastering a wall is a skilled craft that involves a series of steps. First, the background must be correctly prepared. This involves ensuring it is stable, free of dust, and free of any loose particles. For highly thirsty surfaces, a special sealer or a light mist of water is used to regulate the suction. The plaster is then prepared to a creamy consistency and laid with a metal float. The craftsman spreads efficiently, covering a manageable area at a time.
The first application is called the pricking-up coat. It is laid at a depth of about 10mm and then scored with a comb to form a key for the next coat. Once this has stiffened enough, the second coat, or skimming coat, is added. This is laid thinner and is worked repeatedly to achieve a completely flat and level surface. A good tradesperson can make this look effortless, but it demands a great deal of practice and a good eye for flatness.
Apart from plain smooth walls, plasterwork can be used to make a variety of ornamental effects. Textured finishes were once extremely common, created with patterned rollers or combs. Polished plasterwork, or Marmorino, is a high-end method that involves multiple layers of slaked lime plaster burnished to a high-gloss, stone-like finish. Tadelakt is a water-resistant limestone finish from Marrakech that is polished with smooth stones and sealed with soap soap to produce a seamless surface for wet areas.
Nowadays, a lot of people encounter plastering in the context of repairing holes or preparing walls for painting. For minor patches, a tub of spackle can be adequate. But, for larger sections or a whole room, the services of a skilled tradesperson are usually recommended. A well plastered wall is the foundation of a beautiful room. It feels substantial and properly crafted, reflecting light uniformly and providing a feeling of craftsmanship that is noticeable. In a age of fast makeovers, a beautifully smooth surface stands as a mark to skill and old-fashioned craftsmanship.