Article Contents:
- Unique Properties of Oak Wood: Natural Engineering of Perfection
- Structural Features and Mechanical Characteristics
- Chemical Composition and Natural Protection
- Moisture Resistance and Climate Adaptation
- Advantages of Oak Mouldings in St. Petersburg Interiors
- Historical Continuity and Cultural Context
- Adaptation to Regional Climatic Features
- Energy Efficiency and Economic Viability
- Technology of Producing Premium Oak Mouldings
- Selection and Preparation of Premium Raw Material
- Process of Kiln Drying and Stabilization
- Precision mechanical processing
- Multi-Stage Quality Control System
- Size Range and Profile Variety
- Standard Sizes and Their Practical Application
- Profile Classification by Complexity
- Possibilities of Custom Design
- Installation in St. Petersburg Climate Conditions
- Preparatory work and acclimatization
- Features of Mounting in High Humidity Conditions
- Joint Processing Technology
- Protective Coatings for St. Petersburg Conditions
- Selection of Optimal Protection System
- Technology of Multi-Layer Application
- Special Protective Additives
- Design Solutions for St. Petersburg Interiors
- Classic Tradition and Modern Interpretation
- Color solutions and staining
- Combination with other materials
- Applications in Urban Architecture
- Residential Property of Various Segments
- Commercial Property and Public Spaces
- Restoration projects
- Economic Aspects and Investment Appeal
- Analysis of total cost of ownership
- Impact on property value
- Regional pricing characteristics
- Innovations and Modern Trends
- Technological Innovations in Production
- Ecological innovations
- Integration with "smart home" systems
- Maintenance and Care in Petersburg Climate Conditions
- Regular Maintenance
In the architectural splendor of Saint Petersburg, where every interior detail must meet the highest standards of quality and aesthetics, a special place is occupied byOak skirting boards SPBThese exquisite decorative elements do not merely complete door openings—they become embodiments of aristocratic elegance and impeccable taste worthy of Russia's cultural capital.
What makes oak door casings so desirable for Petersburg interiors? The answer lies in the unique combination of natural perfection and craftsmanship of carpentry art. Each elementmolding productsmade from natural oak carries a multi-century history of this noble wood species, which for centuries has served as a material for creating luxury and status items.
In the conditions of the Petersburg climate, characterized by high humidity, sharp temperature fluctuations, and prolonged inter-seasonal periods, choosing quality finishing materials becomes not merely an aesthetic issue, but a necessity to ensure the longevity and functionality of the interior.Oak skirting boards SPBThey represent an ideal solution, capable of withstanding all caprices of the northern climate while preserving their original beauty for decades.
Unique properties of oak wood: natural engineering of perfection
Structural features and mechanical characteristics
Oak rightfully bears the title of king among all wood species used in producing elite finishing materials. Its density, reaching 750-900 kg per cubic meter, is 1.5 times higher than similar indicators of most other hardwood species. This exceptional density ensures oak door casings with incredible mechanical strength and resistance to everyday loads.
The hardness of oak wood on the Brinell scale is 3.7-4.2 units, making it practically immune to household mechanical impacts. Scratches from furniture, accidental impacts, intensive use—all this cannot cause significant damage to properly processed oak door casings. The compressive strength reaches 60 MPa, and bending strength—105 MPa, guaranteeing preservation of the items' geometry even under significant temperature and humidity fluctuations.
The anatomical structure of oak represents a complex engineering construction created by nature. Medullary rays—radial formations penetrating the wood from the heartwood to the bark—perform the function of natural reinforcement. On radial cuts, these rays create a characteristic "silver grain"—shimmering stripes, which are a hallmark of quality oak wood and impart uniqueness to the casings' decorative appearance.
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Chemical composition and natural protection
The uniqueness of oak wood lies not only in its physical characteristics but also in its special chemical composition. High content of tannins—natural tannic substances making up to 20% of the wood's total mass—provides natural protection against biological influences. These compounds create an unfavorable environment for the development of fungi, mold, bacteria, and wood-boring insects.
Tannins also account for the characteristic golden-brown hue of oak and its ability to develop a noble patina. Over time, under the influence of light and oxygen, the wood gradually darkens, acquiring deeper and more saturated tones. This process makesWooden trimoak casings even more attractive over the years, unlike artificial materials that gradually lose their original appearance.
Extractive substances in oak wood possess phytoncide properties. These volatile compounds not only protect the wood itself but also create a healthy microclimate in the room, suppressing the development of pathogenic microorganisms. This is especially important in the Petersburg climate, characterized by high humidity, where the risk of mold and fungal growth is particularly high.
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Moisture resistance and climatic adaptation
One of the main misconceptions about wooden products is their supposed low resistance to moisture. Oak decisively refutes this myth. Thanks to its dense structure and high tannin content, oak wood does not fear moisture and, upon prolonged contact with water, even gains additional strength.
In the conditions of the Petersburg climate, characterized by high air humidity, frequent rains, and fog, this property becomes especially valuable.Oak skirting boards SPBThey are able to adapt to seasonal changes in humidity, absorbing excess moisture during rainy periods and releasing it when air humidity decreases.
The linear expansion coefficient of oak across the grain is only 4-6×10⁻⁶ 1/°C, practically eliminating deformations due to temperature fluctuations. This is especially important for door casings, which must maintain tight fit against the door frame throughout their service life, regardless of seasonal temperature changes.
Advantages of oak door casings in Petersburg interiors
Historical continuity and cultural context
Saint Petersburg is a city with the richest architectural tradition, where every interior element must meet the highest standards of quality and aesthetics. Oak has been the preferred material for creating elite finishes in palaces and mansions of the northern capital for centuries. Catherine Palace, Hermitage, and the palaces of Peterhof—all these architectural masterpieces extensively used oak decorative elements.
Choosing oak door casings for a modern Petersburg interior, the owner does not merely acquire a quality finishing material, but becomes a continuation of centuries-old traditions. This is especially important during the restoration of historical buildings or when creating interiors in classical styles, where every detail must correspond to the spirit of the era.
Wooden moldingsOak casings harmoniously fit into the architectural context of the city, enhancing its atmosphere of aristocracy and refinement. They create a visual link between modern interiors and the great heritage of the past, emphasizing the continuity of cultural traditions.
Adaptation to regional climatic conditions
The St. Petersburg climate is characterized by high air humidity (on average 75-80%), frequent precipitation (up to 650 mm per year), and sharp temperature fluctuations. These conditions impose special requirements on finishing materials, which must maintain dimensional and visual stability regardless of weather fluctuations.
Oak door casings demonstrate exceptional adaptability to local climatic conditions. Properly dried oak wood to a moisture content of 8-12% can withstand fluctuations in relative air humidity from 40% to 85% without critical deformation. This makes them an ideal choice for St. Petersburg apartments and homes, where humidity may vary significantly depending on the season.
The natural antiseptic properties of oak are especially important in conditions of high humidity, where the risk of mold and fungal growth is maximal. Unlike composite materials, which may become a favorable environment for microorganism development, oak door casings create unfavorable conditions for their activity.
Energy efficiency and economic rationality
In conditions of a prolonged heating season in St. Petersburg (up to 220 days per year), questions of housing energy efficiency become especially relevant. Well-made and installed oak door casings ensure tight fitting to the door frame, eliminating cold bridges and drafts.
The thermal conductivity of oak wood is only 0.17 W/(m·K), significantly lower than that of metallic or plastic analogs. This means that oak door casings not only do not cause additional heat loss but also contribute to maintaining a comfortable microclimate in the room.
The long-term economic efficiency of oak door casings becomes evident when analyzing the total cost of ownership. The service life of quality oak products is 50-100 years, whereas analogs made of MDF or PVC require replacement every 10-15 years. When calculated per year of operation, oak door casings are not only superior in quality but also more economical.
Technology of producing elite oak door casings
Selection and preparation of elite raw material
The quality of finished door casings directly depends on the quality of the raw material. Forproduction of molding productspremium-grade use only selected oak wood aged at least 80-100 years. Young trees do not possess sufficient density and stability required for manufacturing high-quality products.
The time of felling plays a critical role in forming the quality characteristics of future door casings. Oak felled during the winter period, when sap movement is minimal, contains less moisture and demonstrates better dimensional stability after drying. Such wood has a more uniform density and lower percentage of internal stresses.
The geographical origin of the wood also affects the quality of finished products. Oak grown in a temperate climate with clearly defined seasonal changes forms a denser and more stable structure. Slow growth under conditions of a short vegetation period contributes to the formation of narrow annual rings and high wood density.
Process of kiln drying and stabilization
Freshly felled oak wood contains 50-60% moisture, which is completely unacceptable for producing quality door casings. The kiln drying process is one of the most critical and technologically complex stages of production, requiring strict adherence to temperature and humidity regimes.
Oak blanks are dried in special kilns for 35-45 days under gradually changing conditions. The initial temperature is 45°C at 85% relative humidity, then the temperature gradually increases to 75°C, while humidity decreases to 15%. Such a regime allows avoiding internal stresses and wood cracking.
The final moisture content of finished blanks is 8-12%, which is optimal for manufacturing trim products intended for use in heated rooms. Moisture control is performed using high-precision electronic moisture meters, measurements are taken at various depths of the material to ensure uniform drying.
Precision mechanical processing
After achieving the required moisture content, blanks proceed to the mechanical processing stage, equipped with modern high-technology equipment. CNC routers allow producing profiles of any complexity with precision down to hundredths of a millimeter.
The quality of cutting tools plays a decisive role in achieving flawless surfaces on finished products. Specialized carbide-tipped high-speed steel cutters, whose geometry is specifically designed for working with hardwoods, are used for processing oak. Cutting speeds and feed rates are individually selected for each profile.
Special attention is paid to the direction of wood grain during processing. Milling is performed to minimize the likelihood of chipping or surface scratches on the tool exit. This requires high operator skill and precise positioning of blanks relative to the cutting tool.
Multi-stage quality control system
Each production stage is accompanied by strict quality control using modern measuring instruments and methods. Incoming raw material inspection includes assessing density, moisture content, presence of wood defects, and accuracy of sawing. Only material meeting all requirements is allowed for further processing.
Intermediate control during the mechanical processing stage includes checking geometric dimensions, surface quality, and profile conformity to the standard sample. Laser measurement systems are used, allowing control of dimensions with precision down to 0.01 mm. Any deviations from specified parameters result in equipment settings adjustment.
Final control of finished products includes a comprehensive evaluation of all product characteristics. Geometric accuracy, surface quality, absence of defects, color and texture conformity to the specified grade are checked. Only products passing all control stages receive a quality certificate and are allowed for shipment to customers.
Dimensional range and profile variety
Standard sizes and their practical application
The dimensional grid of oak door casings is developed taking into account the architectural features of St. Petersburg interiors and requirements of various stylistic directions. Standard width varies from 70 to 150 mm, allowing creation of harmonious proportions in rooms of any size and purpose.
Door casings 70-80 mm wide are considered universal and suitable for most standard door openings in typical apartments. They create an elegant frame without visually overwhelming the interior, which is especially important in compact St. Petersburg apartments of the old stock with characteristic small rooms and low ceilings.
Wide door casings 100-120 mm are intended for spacious rooms with high ceilings, typical of pre-revolutionary mansions and modern luxury apartments. They create a sense of solidity and respectability, emphasizing the interior’s status. Such casings look especially impressive in formal rooms and reception areas.
Extra-wide door casings 130-150 mm are used in exclusive projects where it is necessary to create the most expressive architectural solution. They are capable of transforming an ordinary door opening into a true architectural portal worthy of palace interiors.
| Sticker Width | Thickness | Recommended Use | Stylistic Compatibility |
|---|---|---|---|
| 70-80 mm | 12-16 mm | Standard Interior Doors | Modern, Scandinavian, Minimalism |
| 90-100 mm | 16–20 mm | Entrance Doors, Heavy Frames | Classical, Neoclassical |
| 110-120 mm | 18-22 mm | Grand Entrances | Baroque, Empire, Palace |
| 130-150 mm | 20–25 mm | Exclusive Projects | Historical, Museum |
Profile Classification by Complexity
Straight profiles represent the most laconic and universal solution. Their simple geometry highlights the beauty of natural oak texture, without distracting decorative elements. Such profiles fit perfectly into modern interior concepts where naturalness and functionality are valued.
Round profiles create soft light-and-shadow transitions and add volume and depth to the interior. The smooth profile line harmonizes well with classic furniture and traditional decorative elements.Wooden profileSuch profiles require more complex manufacturing technology, which is reflected in their cost.
Profiles with grooves, panels, and other decorative elements represent the pinnacle of carpentry craftsmanship. Each profile element is carefully worked out, creating a complex interplay of light and shadow. Such casings become true works of art and are suitable for the most prestigious interiors.
Custom Design Possibilities
Modern woodworking technologies open up wide possibilities for creating unique profiles based on individual sketches. CNC machines can reproduce almost any geometry, limited only by material properties and the designer's imagination.
3D modeling allows visualizing future casings during the design stage, eliminating errors and misunderstandings between the client and the manufacturer. The ability to see the product in the context of a specific interior helps make the right decision and avoid costly revisions.
Personalization can include not only profile geometry but also special surface treatments — brushing, patination, artificial aging. These techniques allow creating items with a unique character, perfectly matching the concept of a specific project.
Installation in St. Petersburg Climate Conditions
Preparation and acclimatization
Successful installation of oak casings in St. Petersburg climate conditions begins with proper material preparation. The items must undergo an acclimatization period in the room where they are planned to be installed. The minimum adaptation period is 7-10 days at a temperature of 18-22°C and relative air humidity of 50-60%.
During acclimatization, casings must be stored horizontally on a flat surface with spacers every 60-80 cm. This prevents possible deformations and ensures even material adaptation to room conditions. Packaging should be partially opened to allow air exchange.
Preparation of the installation site includes checking the door frame geometry, cleaning surfaces of contaminants, and, if necessary, wall leveling. The door frame must be securely fixed and aligned vertically and horizontally. Any deviations will affect the quality of casing installation.
Features of fastening in high humidity conditions
The Petersburg climate, with its high humidity, imposes special requirements on the selection of fasteners and installation technology. Metal elements must have an anti-corrosion coating to prevent rusting, which may cause stains on the surface of the casings.
The optimal solution for fastening oak casings is finish nails made of stainless steel, with a diameter of 1.2-1.5 mm and a length of 50-60 mm. They provide secure fixation without the risk of corrosion. The nails are driven in at a slight angle with a spacing of 400-500 mm, and the heads are countersunk to a depth of 1-2 mm.
Additional fastening reliability is ensured by using high-quality PVA wood glue, which is applied to contact surfaces before installing the casings. The glue not only strengthens the joint but also creates an additional barrier against moisture penetration at the joints.
Joint processing technology
The quality of corner joints largely determines the overall perception of installed casings. In conditions of variable humidity, it is especially important to ensure tight joints that maintain their integrity during seasonal changes in wood dimensions.
Joints at a 45° angle are executed with jewel-like precision using a router with a fine-toothed disc. The cut must be perfectly smooth, without chips or scratches. Before assembly, the end surfaces are sanded with fine-grit sandpaper to remove microscopic irregularities.
Joints are additionally treated with special acrylic or polyurethane-based sealants, which provide an elastic connection capable of compensating for minor material movements. Excess sealant is removed before it hardens to ensure an aesthetically pleasing appearance.
Protective coatings for Petersburg conditions
Selection of optimal protection system
The selection of protective coating for oak casings in Saint Petersburg must take into account the specifics of the local climate with high humidity and sharp temperature fluctuations. The protection system must provide not only decorative function but also a reliable barrier against moisture penetration.
Oil-based wax coatings based on natural components penetrate deeply into the wood structure and provide reliable protection from within. Such compositions highlight the natural beauty of oak grain and create a pleasant tactile surface. Drying time is 12-18 hours depending on temperature and air humidity.
Polyurethane-based lacquer systems form an elastic protective film on the surface, providing maximum resistance to mechanical impacts and moisture. Modern formulations have high vapor permeability, allowing the wood to "breathe" and regulate humidity in the room.
Multi-layer application technology
Surface preparation before applying protective coating includes final sanding with 220-280 grit abrasive. The surface must be perfectly smooth, without scratches, dents, or other defects. After sanding, the items are thoroughly dusted using compressed air or adhesive cloth.
The first layer of coating is applied as an even thin layer along the wood grain. Special attention is paid to end surfaces, which absorb moisture most actively. After the first layer dries, a light interlayer sanding with 320 grit abrasive is performed to remove raised fibers.
The second and subsequent layers are applied at intervals specified by the coating manufacturer. Each layer must be fully dry before applying the next. The final layer is applied particularly carefully, without gaps or runs, as it forms the final appearance of the item.
Special protective additives
For casings used in particularly harsh conditions, coatings with special additives are recommended. UV filters protect wood from fading under sunlight, which is especially relevant for casings located near south-facing windows.
Antiseptic additives provide additional protection against biological damage. Although oak has natural resistance to fungi and mold, additional protection is not unnecessary under the high humidity conditions of the Petersburg climate.
Hydrophobic additives create a microscopic film on the surface that repels water. This prevents moisture from penetrating the wood pores and forming water stains on the casing surface upon accidental water contact.
Design solutions for Petersburg interiors
Classic tradition and modern interpretation
The architectural heritage of Saint Petersburg dictates special requirements for selecting and styling interior elements.Oak skirting boards SPBThey must harmoniously fit into the overall stylistic concept, whether restoring a historic interior or creating a modern space with classical elements.
In classical interiors, oak casings with rich carving emphasize the solidity and dignity of the setting. Grooves, panels, decorative moldings create a complex interplay of light and shadow and give the room a formal character. Such solutions look especially striking in grand reception rooms and offices.
Modern interpretation of classical forms implies simplifying decorative elements while preserving basic proportions. This approach allows creating interiors that simultaneously lean toward tradition and meet modern requirements for functionality and ergonomics.
Color solutions and toning
The natural color of oak wood is beautiful in itself, but sometimes the design concept requires its adjustment to achieve color harmony in the interior. Modern tinting technologies allow achieving virtually any desired shade while preserving the visibility of the natural wood grain.
Light tones — "white oak," "Arctic oak," "Scandinavian oak" — visually expand the space and create a sense of freshness and cleanliness. Such solutions are especially relevant for compact Petersburg apartments, where it is important to maximize natural lighting, often limited due to architectural features of old buildings.
Dark shades — 'wenge oak', 'stained oak', 'ebony oak' — create an impression of solidity and luxury. They are ideal for reception areas and offices where it is necessary to emphasize status and respectability. However, using dark tones requires good lighting to prevent the interior from appearing gloomy.
Harmony with wooden elements
Oak casings harmonize beautifully with various finishing materials, opening up wide opportunities for creative design solutions. Natural stone — marble, granite, limestone — creates an elegant contrast with the warmth of wood and highlights the luxury of the interior.
Metallic elements — bronze, brass, patinated copper — harmoniously complement oak casings in classic interiors. It is important to maintain stylistic unity and avoid overloading the composition with disparate elements. Hardware, lighting fixtures, decorative details must support the overall concept.
Wooden baseboardMade from the same oak, it creates a unified ensemble with the casings. Matching texture, shade, and finish type ensures visual continuity of the interior and emphasizes thoughtful design.
Applications in urban architecture
Residential properties of various segments
Oak skirting boards SPBAre used in all segments of residential property — from luxury penthouses in city centers to suburban cottages. In each case, the choice of a specific casing type must correspond to the overall concept of the object and the project budget.
Luxury real estate requires the use of casings of the highest quality with exclusive profiles and flawless finishing. Every detail must demonstrate the owner's status and meet the highest standards. Here, wide casings with intricate milling and hand-finishing are appropriate.
Business-class real estate implies using quality standard profiles with good finishing and reliable protective coatings. The balance between price and quality must ensure the longevity of the products with reasonable investments.
Commercial real estate and public spaces
Office buildings, hotels, restaurants, and other commercial properties impose special requirements on finishing materials. High operational intensity, the need to create a prestigious image, and fire safety requirements determine the choice of specific solutions.
Oak casings in commercial buildings must have enhanced durability and ease of maintenance. Preference is given to polyurethane-based coatings, providing maximum protection against mechanical impacts and contamination.
Public spaces — museums, theaters, concert halls — require special attention to aesthetic aspects. Here, oak casings must highlight the cultural significance of the object and create the appropriate atmosphere. Profiles often styled after historical examples are used.
Irkutsk masters actively participate in the restoration of historical buildings in Siberia. Their rich experience and deep understanding of traditions allow them to create items indistinguishable from historical samples.
Saint Petersburg is rich in historic buildings requiring careful restoration while preserving authenticity. Oak casings play a key role in recreating historical interiors, where every detail must correspond to original 18th-19th century samples.
Restoration projects require a special approach to material and technology selection. Often, profiles must be reproduced based on preserved fragments or archival drawings. This requires high craftsmanship and the use of traditional woodworking methods.
Modern restoration materials must combine authentic appearance with contemporary quality and durability standards. Using special protective compounds allows ensuring the preservation of restored elements for decades.
Economic Aspects and Investment Attractiveness
Analysis of total cost of ownership
When assessing the economic feasibility of using oak casings, it is important to consider not only initial investments but also the total cost of ownership over the entire product lifecycle. High initial cost is offset by exceptional longevity and minimal maintenance expenses.
The average service life of quality oak casings is 75–100 years with proper use and periodic renewal of protective coatings. Meanwhile, MDF or PVC casings require replacement every 12–15 years. When calculating annual operating costs, oak products are not only superior in quality but also more economical.
The possibility of multiple restorations is an additional economic advantage of oak. Minor damages are repaired by local sanding and recoating; serious defects can be corrected using special compounds and techniques. Full replacement of casings is required only in exceptional cases.
Impact on property value
Using high-quality natural materials in finishing significantly increases the attractiveness of real estate to potential buyers or tenants. Market experts note that the presence of oak elements in the interior can increase the property's value by 8–15% depending on the market segment.
The impact of quality finishing is especially noticeable on the liquidity of real estate. Properties with natural oak elements sell faster and at lower discounts. Buyers perceive such finishing as a sign of overall quality and are willing to pay extra for a ready-made prestigious interior.
The longevity of oak casings means that investments in quality finishing will pay off not only at the time of sale but also ensure comfortable use of the property without additional repair costs for many years. This is especially important for investment real estate.
Regional pricing features
The cost of oak casings in Saint Petersburg is influenced by several factors. Proximity to major timber-producing regions of Northwest Russia ensures relatively affordable raw material prices. At the same time, high income levels and a developed consumption culture create stable demand for quality materials.
Logistical factors play an important role in pricing. Delivery of finished products from other regions may constitute a significant portion of the final cost. Local manufacturers have a competitive advantage due to lower transportation costs and greater flexibility in interacting with clients.
Seasonal demand also affects pricing levels. Peak activity occurs during the spring-summer period when most renovation and construction work is carried out. Orders placed during the winter period are often executed with a 10–15% discount, allowing significant savings when planning projects in advance.
Innovations and modern trends
Technological innovations in production
Modern woodworking technologies open new possibilities for producing oak casings. CNC machines of the latest generation allow creating profiles of complex configurations with precision unattainable by traditional equipment. This expands designers' and architects' options for creating unique interior solutions.
Laser technologies are used in creating decorative elements and personalized items. Laser engraving allows applying delicate ornaments, logos, and text directly onto the casing surface. Laser cutting opens opportunities for creating intricate lace-like elements integrated into the overall structure.
Wood thermo-treatment technologies allow modifying oak properties without using chemical substances. Wood processed at high temperature under controlled atmosphere acquires enhanced dimensional stability and resistance to biological influences.
Ecological Innovations
Growing consumer environmental awareness stimulates the development of eco-friendly production technologies. New generations of water-based and plant-based protective coatings provide effective wood protection while ensuring complete safety for human health and the environment.
FSC-certified sustainable forestry is becoming an increasingly important factor for environmentally conscious consumers. Using certified wood guarantees that the material was obtained in accordance with sustainable forestry principles.
The concept of a circular economy is reflected in the possibility of multiple recycling of oak products. At the end of their service life, wood can be used to produce other items or converted into biofuel without harming the environment.
Integration with "smart home" systems
Modern oak door casings can be integrated with building automation systems. Built-in humidity and temperature sensors allow monitoring the condition of the wood and timely adjustment of the room's microclimate.
Hidden wiring for lighting or security systems can be integrated into the casing structure during production. Special channels and niches ensure aesthetic installation of utilities without compromising the decorative appearance of the elements.
Augmented reality technologies allow customers to visualize how casings will look in a specific interior before purchase. Special mobile applications create a virtual model of the room and enable trying out different finishing options.
Maintenance and servicing in St. Petersburg climate conditions
Regular Maintenance
Proper care of oak door casings in St. Petersburg's climate ensures preservation of their aesthetic and functional qualities throughout their service life. Regular cleaning of dust and dirt should be done with soft fabric materials without using abrasives.
Wet cleaning is permitted using slightly damp fabric, but excessive moisture on the surface should be avoided. After wet cleaning, the surface must be immediately wiped dry with a cloth to prevent the formation of water spots.