25 kg Package weight
54 bags/1350 kg Quantity per pallet

Cement screed for the floor M250 — VF 250

Field of application:

For laying screeds of non-deformed concrete floors with a layer thickness of 10 mm or more inside buildings for finishing coatings (ceramic tiles, natural stone, linoleum, laminate, parquet, etc.) and for preparing the base for self-leveling mortars. It is used on rigid bases in civil construction, in the water heating system of floors.

Features:

grade strength - M250;
convenient and easy to use;
layer thickness for application from 10 to 80 mm;

Advantages:

Reinforced with microfiber

High adhesion and elasticity

For internal and external works

For warm floors

More about the product

Specifications

Storage	High-quality cement, mineral fillers, additives-modifiers, microfiber
Water consumption per 25 kg of dry mixture	3.5....4.3 l
Consumption of dry mixture per 1m² with a layer thickness of 1 mm (mm)	Approximately 2.2 kg
Expiry date, min	At least 20
The possibility of technological movement	In 24 hours
The possibility of laying ceramic and stone tiles, not earlier	After 72 hours
Adhesion strength to the concrete base after endurance in air-dry conditions, MPa	Not less than 0.5
Compressive strength limit after 28 days, MPa	At least 20
Tensile strength limit when bending through 28 days, MPa	At least 4.5
Coarseness of aggregate, mm	Not more than 1.25
Application temperature	From +5 ⁰С to +30 ⁰С

Preparation of the base

It is carried out in accordance with DSTU-NB A.3.1-23:2013 and DSTU-NB B.2.6-212:2016. The surface of the base must be dry, strong, as well as dense and clean. Before installation, the surface is cleaned of dust, oil stains and other substances that reduce the adhesion of the solution to the base. All weak areas of the base should be removed. Open and deepen the cracks mechanically (depth - 1/2 the thickness of the base, width - 5 mm), prime with an acrylic primer and fill with mortar mixture VF 250. To ensure better adhesion of the screed to the surface, surfaces with a high absorption capacity should be pre-treated with primers, in accordance with appointment. Installation of screed is possible no earlier than 4 hours after priming.
Preparation of the solution

Pour water into a clean container (water temperature from +15 °C to +25 °C) at the rate of 0.14-0.17 l per 1 kg of dry mixture, gradually add the dry mixture and mix with a mixer at low speeds until a homogeneous mass is obtained without lump Keep the solution mixture for about 5 minutes, then mix again. An overdose of water leads to delamination of the mixture and reduces the mechanical strength of the solution.
Recommendations

If there are deformation seams in the bedding layer, it is necessary to duplicate them on a freshly installed screed. In addition to the detailed information on how to use the material, when working with it, you should be guided by the current regulatory documents for arranging floors. In the case of using the material in conditions not considered in this technical description, it is necessary to independently conduct tests or consult the manufacturer. VF 250 screed contains cement, which causes an alkaline reaction at the moment of hydration, so it is necessary to protect eyes and skin when working. If the solution mixture gets into the eyes, they should be immediately washed with running water and consult a doctor.

Execution of works

Put the mortar mixture on the surface of the base, distribute it evenly to the level specified by the beacons, level it with a slat or rule. If necessary, rub. When performing "floating" floor screeds, for example, on a soil base
Packaging

Paper bags with an inner polyethylene layer of 25 kg.
Storage

The mixture must be stored in the company's airtight packaging in a dry room, on pallets. The shelf life is 12 months from the date of manufacture indicated on the package.
Cost

On average, 2.0-2.2 kg of screed is used per 1 m², with a layer thickness of 1 mm.