Waterproof plaster is a valuable but often overlooked tool for protecting your home from moisture. This kind of plaster keeps your walls dry and safe from damage in addition to acting as a decorative finish and water barrier. Plaster waterproofing can be very beneficial when dealing with damp basements, external walls, or bathrooms.
Any building that has moisture problems runs the risk of developing structural damage, mold, and mildew. By forming a seal that keeps water from entering the walls, waterproofing plaster helps to avoid these issues. It’s an easy fix that will ultimately save you a great deal of hassle.
Installing waterproofing plaster is a sensible approach to make sure your walls last a long time. It’s an investment in the well-being of your house, giving you comfort in knowing that your rooms are adequately shielded from the weather. Whether you’re starting from scratch or remodeling your home, think about the advantages of giving your walls an additional layer of defense.
Type of Waterproofing Plaster | Description |
Cement-based Plaster | A durable plaster mixed with waterproofing additives, ideal for outdoor walls and wet areas. |
Acrylic Plaster | Flexible and resistant to water, commonly used for exterior walls to prevent water penetration. |
Silicone-based Plaster | Highly water-resistant, often used in areas prone to heavy rain or moisture. |
Lime-based Plaster | Breathable plaster that prevents moisture buildup, suitable for both interior and exterior use. |
- Waterproofing plaster: brands and manufacturers
- How plaster waterproofing of walls is carried out?
- Manual waterproofing of plastered walls
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Waterproofing plaster: brands and manufacturers
Construction stores carry a large selection of prefabricated waterproofing materials. Mixtures are offered for sale in 25 kg polyethylene bags, 20 kg buckets, 25 kg multilayer kraft paper bags, and 15 kg bags that come with a 3 liter canister that contains emulsion. The following brands are notable for their affordability, attributes, and all-around use:
For subterranean passageways, elevator shafts, showers, swimming pools, basements, and foundations, use a cement mixture called magma that contains mineral additives. Rigid waterproofing is provided when applied to reinforced concrete bases, brick, concrete, and cement-sand mixtures. This plaster is not appropriate for painted walls, gypsum, asbestos cement, and wood surfaces that have salt deposits and fissures.
It is not possible to use the mixture if the surface
- is deformed under the influence of high and low temperature changes or shrinkage;
- experiences high mechanical loads;
- is covered with fresh concrete (less than 3 months).
Furthermore, covering cement screeds with a curing period shorter than 28 days is not a suitable use for the composition.
Konsolit 540 is hydro plaster for swimming pools (walls and ceilings), saunas, basements, laundry rooms, and foundations. The mixture has the ability to strengthen building structures, as well as high strength indicators and corrosion resistance. A microcrack-preventing modifier is present in the composition. Plaster works well for restoration projects.
Gidrolast is a cement-polymer mixture used to apply a thin layer of coating to surfaces up to three meters above the ground. Features include high adhesion, frost resistance, elasticity, and vapor permeability. It forms common crystalline structures when it comes into contact with a mineral base.
Barralastic is a two-component dry mix used to coat concrete, brick, metal, and wood. It is shown in the picture below. Air can flow through plaster waterproofing easily, and the environmental certificate attests to its non-toxicity and resistance to acids, oil products, and alkalis. The mixture is appropriate for food processing water supply systems. Benefits include: 4 atm tear and 9 atm pressing pressures, elasticity, resistance to frost, vibration, movement, and temperature changes.
A combination of elastic structure for both internal and external work is called Bauta. The substance is employed in the installation of self-leveling flooring, concrete masonry, and cement plaster waterproofing. The mixture works well in situations where the water column pressure is as high as 5 meters.
Osmoflex-plastic composition for flexible wall-to-pipe, ceiling-to-floor ties, and for structures subjected to dynamic loads and vibrations, containing butadio-styrene resins. It is highly adhesive and resistant to frost, sulfide, chloride, and carbon oxide effects.
Corruption: a red combination of an astringent ingredient and acrylic elastomer for universal waterproofing. In areas with high humidity, the material is used to glue and waterproof cladding, such as mosaics, stones, and tiles. The carver is made to be resistant to harsh chemicals and freezing temperatures, and it is intended to waterproof walls and floors in bathrooms, showers, and swimming pools. High adhesion is a distinguishing feature.
Dikhtugslem is a cement-mineral mixture that can be used to apply water at pressures up to 4.5 mm. Producer: Tigi Knauf.
How plaster waterproofing of walls is carried out?
On the side of the water pressure, a 25 mm-thick waterproofing layer is applied. This offers efficient protection for the walls and foundation when they are exposed to water for an extended length of time. The coating resists freezing soil in the winter and floods during springtime. Environmentally friendly compounds are used to coat drinking water tanks, and specialized adhesives are utilized as a foundation for painting and cladding. The material is applied in multiple layers, each with a thickness of 3 mm, thanks to processing technology.
Crucial! Applying the solution to gypsum surfaces, loose and crumbling masonry, or walls that shrink easily should be avoided. Plastering cannot be done if the base has salt deposits or if there are cracks wider than 0.5 cm. Select premium blends from reputable brands, pay close attention to the ratios, and adhere to the manufacturer’s directions.
Bases are meticulously prepared before applying waterproofing plasters. Three steps are required in the preparation process:
Paint, putty, and plaster should be removed. Use a metal brush, hammer, chisel, or grinder with an attachment. Paint can be removed more easily if you use a chemical to soften the coating or heat it with a specialized hair dryer. To achieve a smooth and uniform surface across a sizable area, use a sandblaster.
To a hard surface, clean the stone or brickwork’s joints. Use a metal brush to clean out deep crevices in ancient walls with crumbling seams; then, fill them with cement mortar. Dust off any cracks, sew them up a centimeter or two, and fill them with putty.
In the event that the waterproofing layer is thicker than one centimeter, reinforce the surface. The base is covered in rough masonry and thick layers with damage. Make use of a ten by ten or twenty by twenty millimeter galvanized metal mesh. Use screws with widened washers to secure the mesh. Use fiberglass reinforcing mesh when applying a waterproofing layer thinner than 30 mm on a flat base.
Crucial! For walls composed of various materials (e.g., brick + concrete, brick + stone), a cement-sand plaster mixture is first applied, followed by waterproofing the plastered wall. There should be a 28-day gap between these phases. Three months is the earliest that newly laid masonry can be treated. Conditions for temperature and humidity: dry, windless, +5 to +30 degrees, 60% humidity.
Apply the plaster either manually or mechanically after preparation. Although it takes a long time, manual waterproofing uses little mixture. Plastering by machine is a quick process that ensures a strong bond between the solution and the surface. On the other hand, mechanical application needs specialized equipment and uses more solution.
Manual waterproofing of plastered walls
Guidelines for DIY application of waterproofing plaster:
After cleaning, lightly mist the surface with water. For this, use a wide brush. Verify that there are no puddles on the floor and that the wall is slightly damp but not overly so.
Fill a bucket with water, add the dry mixture, and beat with a mixer set to 400–800 rpm for three minutes. The manufacturer’s instructions are printed on the packaging and include information on the volumes and ratios of water to dry matter. Two-component compositions are diluted gradually by adding water to the emulsion first, followed by the dry matter.
Put on the first layer of waterproofing (2:1 ratio, semi-liquid). Using a brush, apply the solution in a single direction and rub the mixture all over the surface. Use a small amount of solution for a single application, carefully coat the joints and seams, and smooth out any drips. Reverting to the treated fragments for adjustments will cause adhesion to decrease and the insulating layer’s integral structure to be destroyed.
Prepare the second batch (thicker, in a 3:1 ratio) and wait for the hardening process to start. Using a spatula, apply the second layer from the bottom up. Create a thin, even layer by holding the tool at an angle. Movement direction: perpendicular to the brush’s motions when applying the initial layer. Reapply the third layer in the same sequence, making sure to keep the perpendicularity requirement in mind.
Give it a week to harden completely. Use a spray bottle to occasionally mist the plaster in hot weather to keep it from drying out and getting sunburned.
After seven days, apply a liquid grout solution to the surface and use circular motions to smooth it out. Make use of a polyurethane or metal float.
Crucial! If you had to temporarily halt and put off applying waterproofing, use a 45-degree cut angle to shape the edge. Make a scratch with a metal brush on the oblique cut. After work picks back up, apply a layer of water to this area and let it dry for a day.
Plaster waterproofing is crucial for preventing moisture damage to your walls. Using a waterproofing plaster can offer a long-lasting solution to keep your walls dry and strong, regardless of the high humidity, rain, or water exposure in spaces like bathrooms or basements.
This kind of plaster functions by forming a barrier that stops water from penetrating the walls, lowering the possibility of mold development, structural deterioration, and other issues linked to moisture. It provides long-term protection for the interior and exterior walls of your home, making it a sensible choice for both new construction and renovation projects.
For waterproofing plaster to work as effectively as possible, it’s critical to carefully follow the manufacturer’s instructions. To get the desired effects, surface preparation, mixing, and application are essential steps. Plaster waterproofing can extend the life of your walls and keep them in excellent shape for many years to come with the correct technique.
Plaster that has undergone waterproofing is crucial for preventing moisture damage to walls, especially in places where moisture is likely to occur, like exterior walls, basements, and bathrooms. By preventing water from penetrating the walls, it forms a strong, water-resistant barrier that helps prevent problems like mold, mildew, and structural damage. Whether you’re building a new structure or remodeling an old one, employing waterproofing plaster is a wise investment to guarantee sturdy, healthy walls.