Facades

Repairing the facade of a building is a serious job that requires both time and money. However, there are many benefits – the energy efficiency of the building increases, the microclimate in the building improves, less energy is used, significant savings are made, the appearance of the building improves, and the value of real estate increases significantly.
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For facade repair

It does not matter whether to renovate the facade of a large object or a small private house – you must first find out what to do, and then choose the most efficient option. There are two ways to save – to buy the cheapest materials, or to buy new materials that allow you to work professionally and quickly, so they will cost relatively more. If the facade repair in a private house is done by yourself on weekends, you can afford to save by buying cheaper materials. If the object is large, the more expensive multi-component finishing materials will allow you to save a lot.

Facade preparation

Facade finishing should begin with its preparation – the condition should be clarified and any damage should be identified. It is best to invite an expert for this purpose. The most common cause of facade damage is water. Therefore, all gutters and the roof must be arranged. Then windows, doors and other facade parts must be covered with a protective film. The surface must be dry and clean and free of dust, lime or oil. Particular care must be taken to ensure that there are no grease, wax, emulsion or oil residues on the façade. It is recommended to clean the facade mechanically – to cut off the pieces that have already been partially detached, to clean the peeling paint with a scraper. One of the most effective methods is to use high-pressure sand, air or water jets.

Cottage village Green Village

Preparatory work

If more than 30% of the old plaster area of the facade is damaged, it is best to take it off and plaster it again. If the facade is still in good condition, all that is needed is to fill the cracks. Fillers can be based on cement, acrylic or PVC. Smooth the slightly dried surface with a lightly dampened sponge. To obtain a high-quality surface, the area is processed with sandpaper.

Priming

The next step is surface priming. It is important to assess whether the plaster needs to be primed with a deep primer. It is designed to strengthen old, weak, dry surfaces, improving their adhesion to various surfaces, as well as reducing water absorption. However, experts recommend priming all porous and moisture-absorbing cement, concrete, aerated concrete, gypsum, plasterboard, cement-lime and other surfaces. Apply the primer to the surface with a brush, low-pressure sprayer or roller evenly. If the surface is very old, damaged, strongly absorbs water, is unstable, it should be applied two or three times. The next layer is applied when the previous layer has fully dried.

Building on Miera Street, Riga

Insulation

Insulation is not a cheap pleasure, but it should be done, because the heat loss through the walls is the highest among all the heat loss sources – almost 50%. In Northern European climate, insulation definitely pays off, allowing significant savings at the expense of heating. Two materials can be chosen for facade insulation – mineral wool or expanded polystyrene boards. When using expanded polystyrene, insulation costs at least half as much, but it is only recommended for relatively new buildings that do not have moisture problems, because expanded polystyrene breathes poorly. Stone or glass wool is air permeable and can also be used to insulate damp wooden buildings. All mineral wool can be considered safe, because both stone and glass wool are made from natural raw materials.

Foam polyester

The advantage of expanded polystyrene is its cheapness. Care must be taken to choose the right degree of hardness of polystyrene foam – otherwise, even the mechanical strength of a properly treated surface will be too low. Styrofoam is a combustible material. When working with expanded polystyrene boards, they should not be left in direct sunlight for a long time, as the material loses its properties, becomes brittle and loose.

Exterior wall insulation

The process itself is quite simple, but requires a relatively large amount of work and time. The facade must be clean, cracks filled and the surface leveled. If the façade has large irregularities, the polystyrene foam plates themselves can also be used for correction. It will require less work and resources than removing roughness when applying putty or decorative plaster. In addition, an uneven layer of topcoat may later crack.

Building in Kekava