Garage for many motorists becomes not just a place of night parking, but a full-fledged workshop, where complex repair work is carried out. In such conditions, the coating is subjected to enormous loads: the weight of the car, the fall of heavy tools, spilled oils and aggressive chemical reagents. That is why the choice of flooring is acute, especially when the budget for the arrangement is limited.
You can create a durable and durable floor without having huge financial resources. The main thing is to choose the right technology and material that will meet the operating conditions. Savings during the design phase or the choice of poor-quality mixtures can lead to the fact that in a year you have to redo everything again, which will eventually be more expensive.
In this article, we will analyze time-tested ways of organizing the foundations that are available to every motorist. You will learn about the nuances of preparation, pouring and finishing, as well as how to avoid the typical mistakes that lead to the destruction of the coating.
Load analysis and base preparation
Before purchasing materials, it is necessary to honestly assess the condition of the existing basis and operating conditions. If the garage is already built, most often you are dealing with a conventional concrete slab or ground base that requires serious preparation. Ignoring this stage is the most common reason for the rapid failure of even the most expensive coverage.
The base should be dry and have no visible cracks. If you plan to lay on the ground, you will need to create a full-fledged “cake” of sand, crushed stone and waterproofing. The humidity of concrete is checked by a simple test: a square of 1×1 meter polyethylene film is glued to the surface with tape. If a day later, the film appeared condensate, waterproofing It is poorly executed or the concrete has not dried.
Particular attention should be paid to the height changes. For the laying of tile or thin-layered filling floors, the difference should not exceed 2 mm per linear meter. Concrete floors are more tolerant of irregularities, but the ideal plane prolongs the life of the coating.
⚠️ Warning: Never pour the finishing coating on a wet base. Moisture trapped under a layer of sealed paint or epoxy will turn into steam and break the coating with bubbles in a month.
Surface preparation involves removing old oil, fats and dust. Concrete is a porous material, and if it is not cleaned, the clutch of the finish layer will be impossible. Use industrial vacuum cleaners and degreasing agents. Mechanical processing, for example, blasting or grinding with a mosaic-grinding machine, opens the pores of concrete, providing adhesion.
Concrete: classics of budget construction
The most common and reliable solution remains concrete-knit. This is the base on which you can later lay any other materials or use as an independent floor. For a garage, the minimum screed thickness should be 10-15 cm if it is a new base, or 5-7 cm when repairing over an existing plate.
To increase the strength of concrete necessarily add reinforcement net. It prevents cracking during shrinkage and dynamic loads from the wheels of the car. It is important to use the concrete of the brand not lower M300 (B22.5)As lower grades can simply crumble under the weight of a heavy SUV.
The process of filling requires compliance with the temperature regime. The optimal temperature for a set of strength is from +5 to +25 degrees Celsius. In hot weather, concrete must be moistened and covered with film to avoid too rapid evaporation of moisture, which leads to the formation of microcracks.
Use fibre fibre when mixing concrete – this is an additional microrebar that significantly reduces the risk of cracks when shrinking.
After filling, the surface must be leveled with the rule. If you plan to use the garage as a workshop, it makes sense to make a slight slope towards the observation pit or ramp immediately to facilitate water removal.
Painting concrete floor: cheap and angry
If the condition of the concrete screed is satisfactory, but it is dusty and looks unpresentable, the most budget option is painting. Special paints for concrete floors create a protective film that prevents the formation of dust and protects against oil stains. It's polyurethane or epoxy compositions designed for industrial loads.
Epoxy paints are characterized by high adhesion and chemical resistance. They form a strong layer that is difficult to damage even with a fallen key. Polyurethane analogues are more elastic and better tolerate temperature changes, which is important for unheated garages. Apply the paint in two layers, allowing the first to dry completely.
Before painting, be sure to apply deep-penetration. It will bind the remains of dust and reduce the consumption of expensive finish enamel. You need to work in a respirator, since the solvents in the composition of paints are toxic until the moment of polymerization.
☑️ Preparation for painting
Topping technology: strengthening the upper layer
For those who want to get a floor close to industry standards but are willing to add a little to the budget, topping technology is suitable. This is the process of rubbing dry hardening mixtures into fresh concrete. The result is a high surface. wear-resistant And no dust.
Mixtures (toppings) are quartz, corundum and metal. For a passenger garage, quartz filler is quite enough. It gives the concrete additional hardness and decorative look. The process requires precise timing: the mixture is scattered over the surface when the concrete is already grasped, but still wet.
Then grouting is made with special machines (“helicopters”) or manually with special ironing machines. The mixture is pressed into the concrete body, creating a monolithic layer. After that, the floor is polished and covered again. crooked (Special varnish) to protect against moisture during ripening.
| Type of coating | Average cost (ruble/m2) | Term of service | Difficulty of installation |
|---|---|---|---|
| Concrete screed | 800 - 1500 | 15-20 years | Tall. |
| Painting (epoxy) | 400 - 800 | 5-7 years | Low. |
| Clinker tile | 2500 - 4000 | 20 years. | Medium |
| Filling floor (3D/industrial) | 1500 - 3000 | 10-15 years | Tall. |
Tile laying: aesthetics and practicality
Ceramic or porcelain tiles are the choice for those who value purity and order. In the garage you can not use ordinary tile tiles for bathrooms, it is too fragile and slippery. You'll need it. porcelain or clinker pavers with a rough surface (slip class R10-R11).
Installation of tiles on the floor in the garage has its own characteristics. The glue should be elastic and frost resistant, designed for outdoor work or rooms with high loads. The seams between the tiles are necessarily filled with epoxy grout, which is not afraid of chemistry and water, unlike cement analogues.
The advantage of this floor is the possibility of local repair. If a fallen bar breaks one tile, it can be replaced without touching the entire floor. In addition, it is easy to sweep away dirt and oil stains from the tiles.
⚠️ Note: When laying tiles in an unheated garage, use only frost-resistant glue. The usual composition at the first cycle of freezing-thawing will lose its properties, and the tile will begin to fall off.
The secret to perfect seams
Use plastic tile alignment systems (SVPs). They allow you to avoid height differences between neighboring elements, which is critical for the arrival of the car. Even a small ledge can cause the edge of the tile to chip under the wheel.
Modular PVC floors: a modern trend
A relatively new solution that is gaining popularity due to the ease of installation. Modular PVC tiles are assembled as a constructor, without glue and complex tools. This is the perfect option for those who want to do hand-craft Quickly and without “wet” processes.
The material is not afraid of moisture, oils, gasoline and temperature changes. Under the tile often organize a ventilation gap, which allows the floor to "breathe" and remove moisture if it came under the coating. On this floor is pleasant to walk, it is warm to the touch and has good sound insulation properties.
The only nuance is that under heavy racks or jacks, the tiles can be slapped if it does not have enough stiffness ribs. Therefore, for the garage, choose a tile thickness of at least 7-8 mm, designed specifically for industrial premises.
Frequent mistakes in the arrangement of the floor
Many homeowners step on the same rake, wanting to save money. For example, they refuse to strain-stitch In a concrete screed. Concrete shrinks when it dries, and if it has nowhere to go, it cracks in a chaotic order. The stitches are cut with a Bulgarian every 3-4 meters.
Another mistake is saving on waterproofing. Water coming from the ground not only destroys concrete, but also creates increased humidity in the garage, provoking corrosion of the car. A high-quality film or ruberoid is not an extra waste, but a necessity.
The time of the maturation of concrete is also often ignored. You can start floor operation only after a set of full strength (28 days). Early loading leads to the formation of potholes and dust.
The most expensive mistake is saving on the preparation of the base. No, not even the most expensive coating, will be held on weak, dusty or wet concrete.
Can I fill the floor in the garage in winter?
Technically possible, using anti-frost additives and warming up, but it significantly increases the cost of the process and requires constant temperature control. For budget repairs, it is better to wait for the warm season so that the concrete gains strength naturally.
Do I need waterproofing under the screed if the garage is dry?
Yes, we do. Groundwater can rise seasonally, and capillary moisture rises from the ground constantly. Waterproofing protects not only the floor, but also prevents dampness in the room itself.
What is the best way to wash a painted floor in the garage?
Use neutral detergents or specialized chemicals for industrial flooring. Avoid aggressive solvents and abrasive brushes that can damage the protective layer of paint.
How to remove oil stain from the concrete floor?
Fresh spot should be immediately covered with sawdust, sand or a special absorbent. Old spots are removed by solvents, alkaline solutions or burning with a gas burner (with caution), after which the surface must be protected again.