How to properly attach the mesh under the plaster on the wall

The right preparation, which includes correctly attaching the mesh beneath the plaster, is the first step in ensuring that your plastered walls stay sturdy and crack-free. By acting as reinforcement, this mesh keeps the plaster from cracking over time. Whether you’re building from scratch or remodeling, knowing how to firmly fasten this mesh is essential for a long-lasting and attractive result.

It’s crucial to properly prepare the wall surface before attaching the mesh. First, give the wall a thorough cleaning to get rid of any dust, grime, or loose debris. Better mesh and plaster layer adhesion is ensured on a clean surface. Furthermore, check the wall for any imperfections or cracks that should be fixed before continuing.

Next, decide which kind of mesh is best for your project. There are several materials available for plaster reinforcement mesh, including metal and fiberglass. Usually, the decision is based on the particular needs of your wall surface and the conditions to which it will be exposed. Make sure the mesh you choose works with the type of plaster you plan to use.

Prior to attaching the mesh, prime the prepared wall surface with an appropriate adhesive or base coat. This glue aids in securing the mesh firmly in position. Make sure the mesh completely covers the portion of the wall where plaster will be applied by carefully positioning it over the adhesive. Gently press the mesh into the adhesive to guarantee a solid bond and get rid of any air pockets.

As directed by the manufacturer, let the adhesive dry completely after positioning the mesh. In order to guarantee that the mesh sticks firmly to the wall surface, this drying phase is essential. Check the mesh for any gaps or loose areas after it has dried. Deal with any problems as soon as possible to avoid any potential issues during the plastering process.

Now that the mesh is firmly in place, you can start plastering the wall. Layer the plaster on, taking care to level and smooth each layer as you go. The reinforcement provided by the mesh underneath will reduce the possibility of cracks and increase the plastered surface’s overall durability. To get the best results, be sure to adhere to the recommended drying times in between plaster layers.

These procedures will guarantee that the mesh beneath your plaster is correctly affixed, providing a strong base for a smooth, durable finish. In addition to improving your walls’ visual appeal, proper installation supports the structural integrity of your walls over time.

What is the function of the mesh

The plaster solution takes on the characteristics of artificial stone after it hardens.

Without reinforcement, the coating is prone to cracking, deformation at different temperatures, etc. The reinforcing mesh gains the ability to resist surface bending, stretching, and compression when it is attached to the plaster composition.

• strengthening wall panels;
• preventing cracking of the plaster layer, the appearance of deformations;
• increasing the wear resistance of the plaster coating;
• improved adhesion quality of the finishing layer to the base;
• increasing the reliability of plaster fastening to a concrete or brick surface;
• insulation of walls, protection of the room from heat loss;
• increasing the strength and durability of the finish;
• preventing cracks during the hardening of the composition at the joints of surfaces made of different materials (wood and concrete base, bricks and concrete);
• reinforcement for interior and exterior finishing and a leveling base for applying plaster.

Types of plaster reinforcing mesh

You must choose the right material before you can attach the plaster mesh. Coatings vary in terms of their intended use, manufacturing material, price, strength, and durability.

— with medium and large cells, made on a polypropylene basis. The fabric is finished in a variety of ways.

This article from "All about Concrete" focuses on how to properly attach mesh to walls underneath plaster. Ensuring the strength and longevity of the plaster finish requires careful mesh securing. We’ll go over crucial actions like cleaning the wall to encourage adherence, choosing the right kind and size of mesh, and applying it correctly to prevent common problems like bulging or cracking. You can improve the visual appeal and structural integrity of your walls by using these tips to create a smooth, durable plaster surface.

Features of selection

1. The fabric must have high resistance to alkaline solutions. For testing, part of the product is placed in the solution for 25 days, then the tensile properties are checked. The strength of the layer must be preserved.
2. The coating must be resistant to stretching.
3. Depending on the density of the plaster layer, the quality of the base, the appropriate cell size is selected.
4. The material is selected high-quality for long-term use.
5. Fasteners are necessarily purchased in the kit.
6. Technical characteristics of the mesh (strength, material of manufacture, resistance to temperature conditions) are indicated in the product passport.
7. The mesh material is selected in accordance with the type of base (concrete, brickwork).

Rules for fixing the mesh for plaster

Plaster mesh installation is done in phases, with the sequence of steps varying based on the material type (metal or fiberglass). For the thick layer of plaster to last, the cloth needs to be firmly affixed to the surface.

Installation of the fiberglass variety

In a variety of building types, it is advised to use fiberglass mesh underneath plaster to reinforce the plaster mixture’s surface layer. The substance is applied to roofs and ceilings to strengthen waterproofing coatings. The resistance of self-leveling floors to mechanical loads will be strengthened by fiberglass fabric.

In order to prepare the foundation for ceramic tile installation, the mesh is also utilized to reinforce plaster mortars. It is advised to use the material to fortify and enhance the lower base of the building’s protective qualities. Fiberglass is the best material for high-quality surface leveling near doorways, areas near insulating coatings, and potential deformation sites.

The material is submerged to a depth of 5 mm in a freshly applied plaster layer, as per the laying technology, guaranteeing the coating’s monolithicity. Once the foam plates are securely fastened to the base, the mesh installation is completed.

It is important to remember that fiberglass mesh is only appropriate for use with gypsum compositions; other types of plasters cannot be worked with with this material.

1. The mixture is applied to the surface of the base in a rough layer. Work is carried out on compact areas, because.. the composition hardens quickly.
2. The canvas must be cut to the required size and applied to the treated surface. Then the mesh is leveled with a wide spatula and pressed into the putty or plaster. The material is attached with an overlap of up to 15-20 cm.
3. Then it is necessary to wait for the layer to harden and continue the work the next day.
4. It will be necessary to treat the surface with a spatula and eliminate irregularities.
5. At the next stage, the finishing layer of plaster is applied.

Installation of the metal variety

In construction and repair work, metal reinforcement for finishing beneath plaster is in demand. The substance is all-purpose and suitable for a variety of plaster types and surfaces. The variety is employed to get rid of base differences and irregularities. The product is robust, resistant to wear, and impervious to moisture.

1. First, the cut is calculated, the distance from the floor to the ceiling is measured as standard.
2. The canvas is cut with scissors for working with metal or using a grinder.
3. If it is necessary to fix the material to the wall, it will be necessary to first fix the upper edge. To do this, 2-3 holes are drilled, dowels are inserted and screwed in with screws. Then the mesh is strung on screws, pressed to the surface and fixed with fasteners.
4. If it is necessary to fix the mesh to the ceiling, the work must be performed by 2 specialists. It is imperative to fix the 4 corners of the grid.
5. The frequency of fastener placement depends on the cell size and the thickness of the web.
6. At the next stage, a plaster layer is applied, the surface must first be moistened to improve adhesion.
7. Then, plaster is applied to the fixed web in 1 or several layers.

Types of fasteners depending on the wall material

Fasteners are chosen before the mesh beneath the wall’s plaster is attached. Fasteners are used for installation in accordance with the base material. Brickwork or a wooden base can be fastened with nails. Spot welding can be used to join a metal structure to a metal base.

Dowels and self-tapping screws are used for bases composed of brick and concrete. Using fasteners with water-resistant qualities is essential when working with plaster composition.

Useful tips

1. Before fixing the material, the surface must be cleaned of dust and dirt using a construction vacuum cleaner.
2. It is necessary to check the strength of the base and the absence of cracks. It is important to eliminate unevenness and prime the surface.
3. The layer is fixed only after the primer has dried.
4. It is recommended to install mesh with small cells using small screws. Dowels are more labor-intensive to install; before the dowel is attached, a hole is drilled in the base.
5. Work must be carried out by combining the application of plaster and primer layers and laying the material. In this case, the solution will be distributed evenly over the surface.
6. The plaster solution is applied by spraying the surface, then leveled with a brush or sponge.
7. To ensure that the mesh is securely attached, the material is laid overlapping with an offset of 1 cell. The fiberglass fabric is laid by overlapping with an offset of at least 3-5 cm.

It’s essential to attach mesh beneath plaster on walls to guarantee a long-lasting, crack-free finish. By serving as reinforcement, the mesh keeps the plaster from cracking as a result of wall movement or shrinkage. A suitable surface preparation is necessary for the mesh installation to be done correctly. To get rid of all loose particles, dust, and dirt, give the wall a thorough cleaning. This guarantees that the plaster sticks firmly to the mesh and wall.

Next, fix the mesh to the wall by using an appropriate adhesive or bonding agent. By strengthening the bond between the mesh and the wall, this adhesive contributes to the plaster system’s overall strength. Press the mesh into place after applying the adhesive evenly and letting it partially dry as directed by the manufacturer.

Make sure the mesh is flat against the wall and free of folds or wrinkles when you fix it. To guarantee a consistent surface for plaster application, smooth out any flaws. Make sure there is good contact throughout the entire surface by pressing the mesh firmly into the adhesive using the appropriate tools, such as trowels or spatulas.

Give the adhesive enough time to cure completely after the mesh is firmly in place before adding the plaster. For precise drying times, consult the product guidelines as the curing process varies based on the type of adhesive used. Rushing this process could weaken the mesh’s attachment to the wall and cause the plaster to separate or crack.

Finally, cover the mesh with layers of plaster after the adhesive has dried. To completely embed the mesh, start with a thin base coat and add more layers as necessary to get the right thickness and smoothness. To achieve a solid and long-lasting plaster finish, each layer should be given time to dry and cure before the next is applied.

You can guarantee that the mesh beneath the plaster is correctly attached by carefully following these steps, which will provide a sturdy base for a smooth and durable wall surface. A professional finish and decreased risk of cracks are two benefits of proper installation, which also improves the plastered wall’s aesthetic appeal and structural integrity.

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