Waterproofing work is often carried out using a bitumen primer. To know exactly how much material you will need to purchase, you need to make calculations in advance. Manufacturers indicate the average consumption on the packaging of their products, but there are factors that can change the amount spent. How to correctly calculate the primer consumption per 1 m2 of waterproofing will be discussed below.
general description
The primer is made from bitumen to soften petroleum bitumen, it is subjected to high temperature treatment, and organic solutions are used. The composition cannot contain other elements, toxic diluents are not used. Carrying out waterproofing on the roof will be easier if you first apply a bitumen primer to the base, the quality of the work will be better.
To soften petroleum bitumen, it is subjected to high-temperature treatment and organic solutions are used.
General Features
What is bitumen primer? By definition, a primer is usually called a viscous black liquid made from petroleum bitumen, which is diluted with an organic solvent. Therefore, despite the chemical composition, the material does not contain chemically active or toxic substances, which significantly expands the scope of its application.
Regular and concentrated primers are sold in stores. The first option is immediately ready for application after preliminary mixing, the second needs to be diluted to the optimal consistency.
When applied, the liquid fills all microscopic chips and cracks, forming an impenetrable protective film on the surface that protects the base from any external influences and corrosive changes. In addition, the adhesion of materials increases, which significantly simplifies the process of applying a waterproofing layer.
Types of bitumen primer
To find out what primer bitumen consumption will be per 1 m2, you should first study the varieties presented on the construction market. There are concentrated types and ready-made options on the market.
The first type requires dilution of the composition before use with an organic diluent. You can choose gasoline, white-spirit or kerosene for this purpose. The dilution proportion should be 1 to 2. This option is convenient when you need to save space during transportation, as well as for storage if work will not be carried out for a long time.
The ready-made primer can be used immediately; there is no need to bother diluting it. You just need to mix the composition well before applying it to the material. This saves time and makes the process more comfortable.
The ready-made primer can be used immediately; there is no need to bother diluting it.
Rating
You can also find a huge variety of primer compositions on the market.
The most popular of them are the following:
The specific gravity of the primer is 0.83 kg/l. Used for priming concrete, metal and wooden surfaces. Available in 21.5 liter Euro jars with a shelf life of 12 months. The average price for one container of such material is 1,300 rubles.
Useful video: technical characteristics of TechnoNIKOL primer
Thus, a high-quality primer is a solution that ensures tight and reliable adhesion of the base (concrete, metal or wood) to the roofing or waterproofing coating.
Application area
When a decision is made to carry out waterproofing work with this type of product, then knowing how much product will be needed for the process is mandatory. Then the repairs will be carried out at one time without the distraction of purchasing the missing quantity.
The average consumption rate is 0.25-0.35 kilograms per square meter. It is influenced by the level of adhesion of the base and its evenness; the presence of a rough structure will increase consumption.
Bitumen primer can be used on various types of coatings: asbestos-cement, concrete, metal, reinforced concrete, wood and porous. The product can also be used for roofing and waterproofing. For the latter type of repair, the solution can be used as an independent product, or in combination with other waterproofing agents.
There is a demand for the use of materials with a bitumen base as a waterproofing agent on foundations, underground structures, metal pipelines and steel pipes. It has the property of anti-corrosion protection of metal, so it is also used for this purpose.
The product can be used for roofing and waterproofing.
Packaging and storage
The primer is available in metal buckets with a volume of 10 and 20 liters . The original characteristics are retained for 18 months from the date of manufacture, provided that storage conditions are met.
In particular, primers are stored in rooms with low humidity levels, where direct sunlight does not penetrate. The material is placed away from open sources of fire and heating devices. Recommended storage temperature: -20/+30 degrees .
If the material is stored for more than the stated 1.5 years , this does not mean that the primer cannot be used as a waterproofing material. The material will still be ready for use, however, its technical characteristics will noticeably decrease.
How to calculate the required quantity
The ability to calculate bitumen primer consumption will help you prepare the required amount of product at once. The average indicators are prescribed on the packaging of a particular product, and this figure serves as a guide. However, it may become larger if the application is carried out on a porous surface structure, which will impregnate part of the material, and in order to obtain a smooth surface, more product will need to be applied.
To obtain the number of kilograms of product required for finishing. The first step is to calculate the area of the surface being treated. The result is then divided by the consumption rate.
The average indicators are prescribed on the packaging of a particular product, and this figure serves as a guide.
Standards of use
The norm for spending money per square meter is 250-350g/m2. However, it is possible to obtain a similar flow rate if you correctly follow the principle of covering the surface with the material. Bitumen is applied to concrete, concrete-cement and other porous, rough substrates.
When you have to work with uneven surfaces, pores and dust, the tool you should choose is a brush or brushes made of nylon material. Their use will allow you to obtain a base well impregnated with bitumen and improve the level of fixation.
Applying a primer solution will result in a longer product life. When the task is to glue materials in rolls onto reinforced concrete or concrete with a primer, the sections of the seams between the blocks must be treated with a primer. Each new layer of rolled material can be glued to the base 4 hours after gluing the previous one.
The materials in rolls are laid in an overlapping manner, the laying width is 10 cm. Care is taken to ensure that cross-gluing does not occur. When the positioning of the web is completed, the surface is rolled with a specialized cylinder-shaped roller.
The materials in rolls are laid overlapping, the laying width is 10 cm.
Consumption rates of bitumen primer for different surfaces
Consumption also depends on the type of base that will be processed. This factor is important when calculating the amount of waterproofing agent.
So when working with a concrete surface, you may need from 250 to 350 grams per sq.m. The same indicator will be when finishing slate and a plastered base.
Application to metal and steel will require 200 grams of bitumen primer; wooden structures use 300-350 grams. When old roof coverings made from rolls are processed, there will be more waste, the figure can reach 0.5 kilograms per square meter.
The most wasteful consumption will be when treating roofing with powder - 750-900 grams.
Consumption also depends on the type of base that will be processed.
Specifications
The main operational parameters of the TechnoNIKOL No. 1 bitumen primer are as follows:
- Main element of composition: bitumen;
- Content of basic substances: 40-50%;
- The permissible temperature for the onset of melting is 70C;
- Material viscosity coefficient 15-40;
- Permissible operating temperature from -20C to +40C;
- At a temperature of 18-20C, the TechnoNIKOL 01 bitumen primer dries completely in 12 hours.
Consumption of bitumen primer "TechnoNIKOL"
TechnoNIKOL is a brand that is chosen by many ordinary buyers, as well as professionals. It produces a large number of bitumen compositions that can be used for different situations. For this reason, the consumption of TechnoNIKOL bitumen primer per 1 m2 will be considered.
Often ready-made mixtures are sold with a volume indicated only in liters. So a liter of primer from this company is enough to cover 3.3 meters square. The indicators may be slightly different; this may be affected by the type of material that will be processed.
It will be more convenient to work in hard-to-reach areas using a brush and a nylon brush. For a large area, a roller is selected; it helps to quickly and evenly distribute the bitumen over the surface.
To prepare the surface, it is first cleaned; it is recommended to use a polypropylene broom for this purpose. In order for the coating to last a long period of time and be distributed evenly, it is necessary to eliminate the old finish.
TechnoNIKOL produces a large number of bitumen compositions that can be used for different situations.
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Calculation of primer consumption per 1 m2
Calculating bitumen consumption is easy; you just need to calculate the area of the base. And also find out the consumption indicator of a specific primer. This information is available on the Internet. The manufacturer’s website also often contains an online calculator, with which calculations are not difficult.
Calculating bitumen consumption is easy; you just need to calculate the area of the base.
Bitumen primer is a reliable product that will help to carry out high-quality waterproofing of various structures. To carry out repair work, craftsmen calculate in advance the number of kilograms that will need to be purchased to cover the entire area. The article described in detail the rules for conducting independent calculations.
Rules for performing work
Applying bitumen primer can only be done in open areas and in well-ventilated areas. Before starting work, the surface is thoroughly cleaned of dust and ice. Metal structures must be cleaned of rust.
The primer is applied in a single layer. Fused and rolled insulation is laid only after the layer has completely dried. To perform the work, you can use brushes and rollers; vertical bases are often treated with spray guns.
To quickly process large areas, the diluted primer is sometimes simply poured out and then leveled with special scrapers.
Considering that the composition contains volatile substances and solvents, it is necessary to use respiratory masks and gloves. If the primer gets on the surface of the skin, immediately wash the area with warm water and soap.
