Crown A70V2 polystyrene HIWOOD 70mm x 37mm x 2.0m.

Ceiling crown A70V2 from the South Korean brand HI WOOD is a high-tech product made of high-density polystyrene with thought-out proportions: height 70mm and width 37mm. ThisPolystyrene Cornicelength of 2000mm is designed specifically for rooms with standard and medium ceiling heights from 2.6 to 2.9 meters, where a noticeable decorative accent of medium massiveness is required without visually overloading the space. The snow-white smooth surface of the crown creates an expressive transition between the wall and ceiling, giving the interior architectural completeness and classic elegance.

Balanced profile construction with a height of 70 millimeters and width of 37 millimeters ensures optimal balance between vertical expressiveness and horizontal projection onto the ceiling. This makesceiling cornice polystyreneA70V2 a universal choice for apartments of standard construction, private homes, office spaces, where the product creates a noticeable architectural accent corresponding to the scale of the space. Classical profile geometry with smooth transitions between relief levels forms an expressive play of light and shadow, emphasizing the boundary between planes and creating a visual height increase effect of 10-15 centimeters.

The weight of a two-meter plank is 240-270 grams, making the product 4-5 times lighter than gypsum molding of similar size and significantly simplifying the installation process. Installation is performed by one person without assistants using standard polystyrene adhesive (liquid nails). The profile's structural features allow compensation for wall irregularities up to 5-7 millimeters without additional leveling, which significantly reduces preparatory labor and reduces the overall cost of room finishing by 25-35 percent compared to perfect surface leveling.

South Korean quality HI WOOD: innovations in polymer molding production

The South Korean company HI WOOD is a globally recognized leader in the production of decorative high-density polystyrene molding, with a reputation built over more than 28 years of presence in the international market of construction and finishing materials. The company's production facilities are located in the industrial zone of Busan, the largest seaport in South Korea and the second-largest city in the country, providing logistical advantages for exporting products to 52 countries worldwide, including Russia, CIS countries, Europe, the Middle East, and North America.

The HI WOOD production complex, covering more than 18,000 square meters, is equipped with modern European extrusion equipment for polymer profiles from leading German manufacturers, with computer-controlled extrusion processes and multi-level quality control systems. Extrusion lines operate in a continuous cycle 24 hours a day, 7 days a week, ensuring an annual output of more than 22 million linear metersDecorative cornices made of polystyreneof baseboards, moldings, sockets, brackets, and other decorative elements for interiors of various styles, from classic to ultra-modern minimalism.

The production philosophy of HI WOOD is based on combining advanced Korean polymer chemistry technologies with classic European architectural proportions and traditions. The company's specialists study historical molding samples from European museums, palaces, and mansions, adapting them for production using modern materials and high-precision equipment. All profiles are developed according to the golden ratio and classical architectural canons, ensuring visual harmony of the products in any interior regardless of stylistic direction.

The material of the crown A70V2 is produced using continuous extrusion technology of premium-grade polystyrene raw material from leading global manufacturers, with the use of special modifiers developed in-house, increasing density to 38-42 kg/m³. Closed-pore structure with pore size of 0.09-0.13 millimeters ensures optimal balance between lightness and mechanical strength of medium-sized products. Molten polymer mass at 188-198 degrees Celsius is extruded through a precision-forming die made of hardened tool steel with geometric accuracy up to 0.025 millimeters, creating a profile with perfectly repeating configuration along the entire length of the two-meter plank without any deviations or deformations.

Quality control of HI WOOD products is conducted at all stages of the production cycle, from raw material acceptance to packaging of finished products in protective shrink film. Each batch of polystyrene undergoes laboratory tests in the company's accredited laboratory for compliance with declared characteristics of density, moisture resistance, mechanical strength, thermal stability, and ecological safety. Finished crowns are controlled for 29 parameters including geometric dimensions with tolerance not exceeding 0.3 millimeters, surface quality without bubbles or bulges, absence of extrusion defects, profile straightness without distortions, and color whiteness stability.

HI WOOD's innovative developments include special additives-modifiers in the polystyrene composition, increasing material density to the level of 38-42 kg/m³ while maintaining product lightness and ease of processing. This allows creatinginstallation of decorative cornices made of polystyrenewith mechanical strength comparable to polyurethane analogs at a cost 45-55 percent lower. UV stabilizers of the latest generation prevent material yellowing under intense sunlight, preserving the original snow-white color throughout the product's 30-35 year service life, even in rooms with large south-facing windows.

HI WOOD's production ecological standards comply with the strictest international ISO 14001 norms and Korean ecological requirements. The production cycle is organized on a closed water circulation principle with complete wastewater purification before discharge into centralized sewage. Polystyrene waste undergoes secondary processing and is used in the production of packaging materials and insulation panels. 65 percent of the enterprise's energy consumption is provided by solar panels installed on the roofs of production workshops and storage facilities. The company holds ISO 14001 environmental management certification and regularly undergoes independent ecological audits by international organizations.

Excellent technical characteristics of medium-profile material

Moisture resistance of polystyrene makesCornices Barnaul polystyreneA70V2 is a universal solution for any rooms including areas with increased humidity. Water absorption coefficient does not exceed 1.6 percent after 24 hours of full immersion in water at 23 degrees Celsius, completely eliminating deformation, swelling, protective layer delamination, or loss of decorative qualities even under extreme humidity conditions. The product maintains stable geometric dimensions at relative air humidity ranging from 10 to 98 percent, allowing the crown to be used in any climate zones, from arid steppes to humid coastal regions.

Polystyrene's temperature stability ensures flawless operation in a range from minus 40 to plus 80 degrees Celsius without changes in material's physical-mechanical properties or profile geometry. The crown does not crack during freezing, typical for unheated country houses in winter in Siberia and the Far East, and does not deform during heat in overheated attics and roof spaces in summer in southern regions. The linear thermal expansion coefficient is 0.07 mm/m per degree, which at a plank length of 2000 millimeters results in a size change of only 0.14 millimeters over a 20-degree temperature difference, practically eliminating thermal deformations and crack formation at plank joints.

Mechanical strength of high-density polystyrene is achieved through an optimized molecular structure with increased polymer chain concentration and special reinforcing additives. Bending strength limit is 2.5-2.9 MPa, ensuring high reliability of medium-sized products during transportation, storage, and installation.Barnaul polystyrene decorative corniceA70V2 withstands moderate mechanical loads without forming dents, chips, or cracks even during accidental impacts during renovation work or transportation. The material's elasticity allows compensating for wall irregularities up to 5-7 millimeters without additional leveling of the base with plaster or putty.

Ecological safety of polystyrene is confirmed by international quality certificates ISO 9001, ISO 14001 and sanitary-hygienic conclusions from Russian regulatory authorities Rosconsumnadzor. The material does not contain toxic components, formaldehyde, phenols, heavy metals, volatile organic compounds, or other harmful substances that could negatively affect human health. Under normal operating conditions and up to 80 degrees Celsius, polystyrene maintains full chemical stability and does not emit any substances into the environment. The hypoallergenic nature of the material allows using crowns in children's rooms, bedrooms, medical facilities, kindergartens, schools, sanatoriums without any restrictions.

Chemical inertness of polystyrene ensures compatibility with a wide range of finishing materials and adhesives of various purposes and chemical compositions. The crown is resistant to weak alkalis found in cement and gypsum putties, low-concentration acids, salt solutions, and most cleaning agents. The material does not react with water-dispersed acrylic paints, alkyd enamels, polyurethane varnishes, silicone sealants, significantly expanding the possibilities for final finishing and decorating the product.

Universal application in interiors of various types

Residential rooms with standard layouts and ceiling heights of 2.6-2.8 meters represent an ideal application sphere for the medium-expressive crown A70V2. Living rooms of 18-28 square meters benefit from installing a profile with a height of 70 millimeters and width of 37 millimeters, which creates a noticeable architectural accent corresponding to the scale of the space without visually reducing the height.Barnaul polystyrene cornice purchaseA70V2 for living room decoration becomes an optimal solution, harmoniously combining with both classic and modern furniture.

Bedrooms and children's rooms requiring a comfortable atmosphere receive an ideal solution in the form of the medium-expressive crown A70V2. Installing the crown around the perimeter of the room creates a sense of interior completeness due to the profile's clear lines and classic proportions. The snow-white color and smooth relief transitions form a calm atmosphere conducive to quality rest and relaxation after a workday.

Kitchens with increased humidity from 60 to 80 percent, temperature fluctuations from 18 to 35 degrees, and grease vapors require moisture-resistant finishing materials, and the polystyrene crown A70V2 fully meets these elevated requirements. The closed-pore structure of the material prevents absorption of moisture, condensation, grease vapors, and food odors. The smooth surface easily cleans with a damp sponge using neutral detergent or soap solution, maintaining its original whiteness throughout its service life.

Bathrooms and sanitary rooms with constant high humidity of 75-95 percent present challenging conditions for most traditional finishing materials, butPlinth cornices from polystyrene foamA70V2 demonstrates flawless stability. The material is not susceptible to biological damage by mold and bacteria, does not swell upon contact with water splashes, and does not lose mechanical strength under extreme humidity conditions.

Hallways and corridors with limited natural lighting require decorative elements of moderate expressiveness, and the 70 mm high A70V2 profile creates an optimal visual effect. The 37 mm width ensures sufficient massiveness for a noticeable architectural accent. The snowy white color visually expands narrow corridor spaces, compensating for the lack of natural lighting in areas without windows.

Office spaces in modern business centers with requirements for representation and functionality find a universal solution in the A70V2 cornice. The expressive design of moderate massiveness creates a professional atmosphere of solidity, without distracting employees and visitors with excessive decoration. The ease of installation allows quickly finishing large areas of offices, meeting rooms, and open space zones with minimal labor costs.

Commercial spaces such as restaurants, cafes, shops, beauty salons, boutiques receive a universal decorative element for creating an attractive interior with limited budget for finishing. The A70V2 cornice creates the impression of quality renovation at an affordable cost of materials and labor. The ability to paint in corporate brand colors allows integrating the cornice into the establishment’s branded style, enhancing brand recognition.

Professional installation technology for medium-profile cornices

Surface preparation before installing the A70V2 cornice begins with thorough cleaning of the installation zone from dust, cobwebs, grease stains, and residues of old coatings with low adhesion to mineral substrates. A dry brush with stiff synthetic bristles is used to remove loose plaster particles, dust, and cobwebs, and a wet sponge is used to degrease the surface with warm water mixed with dishwashing detergent at a concentration of 2-3 percent or a special degreaser. Loose plaster areas with low adhesion to the substrate are mechanically removed with a wide metal trowel until a solid layer is reached.

Depressions deeper than 5 mm and cracks wider than 2 mm are filled with gypsum putty such as Knauf Fugen, Volma Shov, Starateli, or equivalents and leveled to the main wall plane using a 100-120 mm wide rubber trowel. After drying for 6-8 hours depending on the room’s temperature and humidity, the surface is sanded with P100-P120 grit sandpaper to remove excess material, unevenness, and trowel marks.

The prepared substrate is treated with a deep-penetration primer such as Ceresit ST17, Knauf Grundirmitte, Starateli, or Optimist to strengthen the plaster layer and improve the adhesive bond of the adhesive to the mineral substrate. The primer is applied with a wide brush or short-bristled roller in one coat at a rate of 150-200 grams per square meter and dries in 2-4 hours at a temperature of 20-23 degrees and humidity of 50-60 percent.

The installation line of the cornice is marked using a laser level or hydrolevel to ensure the profile is strictly horizontal along the entire perimeter of the room without deviations or distortions. The laser level is mounted on a tripod in the center of the room and projects a horizontal line onto all walls. From the projected line, a distance equal to the cornice height (70 mm) minus a compensatory gap of 6-8 mm is measured to prevent mechanical contact with the ceiling surface.

Control points are marked with a pencil every 600-700 mm along the perimeter of all walls and connected by a continuous line using a long aluminum rule or a marking chalk line with a chalk. The horizontal alignment of the line is checked with a bubble construction level at least 1500 mm long on each wall with an accuracy of 1 mm per meter of length.

Cutting corner joints of the cornice is performed using a circular saw with a carbide-tipped disc of 210-250 mm diameter or a manual miter saw with 45-degree slots and a fine-toothed metal hacksaw with a 24-32 teeth per inch blade. To form an internal angle, two cornice boards are cut from opposite sides at a 45-degree angle to ensure tight fitting of the ends without gaps or cracks. The cuts are sanded with fine sandpaper P120-P150 to remove burrs, sharp edges, and unevenness.

The mounting adhesive type 'liquid nails for polystyrene' such as Moment Montaj Superstrong, Titan Styropor, Makroflex, or Sooudal is applied to the back of the cornice in the junction area with the wall and ceiling using dotted lines with a diameter of 8-10 mm spaced 120-150 mm apart or as a continuous wavy strip 7-9 mm wide. The amount of adhesive must ensure reliable filling of the substrate irregularities for maximum contact area.

After applying the adhesive, the cornice is left to air for 1-2 minutes to allow partial solvent evaporation and increase the adhesive viscosity, significantly improving initial adhesion and facilitating fixing the item on the vertical surface. Then, the board is pressed against the wall along the marked line and firmly pressed along the entire profile length with the palms of the hands without excessive pressure.

The cornice is fixed in the designated position using 50 mm wide painter’s tape with the upper part of the tape attached to the ceiling. The initial setting time of the adhesive is 4-6 hours, and full curing with maximum joint strength is achieved within 24-48 hours depending on the room’s temperature and humidity.

Decorative possibilities and economic efficiency of the solution

The universal white color of the A70V2 cornice is an ideal base for implementing any design concepts, from strict classic to ultra-modern minimalism. The product harmoniously combines with white suspended and painted ceilings, creating a monochromatic solution with an expressive medium-massiveness relief structure. Leading manufacturers’ water-dispersible acrylic paints such as Tikkurila, Dulux, Kaparol, and Tex are applied with a short-bristled roller (4-6 mm) in two layers with intermediate drying time of 4-6 hours.

Painting the cornice in ceiling color creates a visual height increase of 12-18 cm due to the continuity of the horizontal plane without a sharp color boundary separating the wall and ceiling. Painting in wall color forms a monochromatic solution with an elegant shadow contour emphasizing the profile’s medium expressiveness. Contrasting painting in dark graphite, anthracite, or saturated black shades against light walls creates a graphic solution suitable for modern minimalist interiors in loft or high-tech styles.

The cost of the polystyrene cornice A70V2 is 1200 rubles per 2-meter board, making it an affordable solution for decorating interiors in mid-range and premium price segments. The price is 4-5 times lower than wooden cornices made of solid oak or beech of similar size and 2-3 times lower than polyurethane analogs. The cost savings for decorating a 68 sq. m. three-room apartment amount to 12,000-18,000 rubles compared to wooden analogs and 6,000-9,000 rubles compared to polyurethane cornices.

The A70V2 POLYSTYRENE HI WOOD 70mm x 37mm x 2.0m cornice represents an optimal solution from a South Korean manufacturer for rooms with standard ceiling heights, where a noticeable decorative accent of medium expressiveness is required, combining classic proportions, practicality of modern materials, ease of installation, and affordable cost to create elegant, universal interiors of any style.