Polyurethane door molding: framing and decor for interior doors

A door is not just an opening in a wall. It is a boundary between spaces, a frame that can be modest or solemn, inconspicuous or accent.Polyurethane door moldingtransforms an ordinary interior door into an architectural element worthy of attention. Decorative surrounds instead of standard plastic strips, elegant overlays on the door leaf, luxurious portals for arched openings — all this creates the character of the interior, demonstrates the owner's taste, and unites disparate rooms into a single stylistic composition.

Why has polyurethane become the material of choice for door decor? Because it combines the beauty of plaster molding with the practicality of a modern polymer. Lightweight — does not burden the door structure, easy to install without complex equipment. Durability — not afraid of impacts, does not crumble from accidental touches. Moisture resistance — suitable for bathrooms, kitchens, where wooden decor swells and deforms. Affordability — the price is several times lower than carved wood or plaster. Variety — hundreds of profiles, styles, sizes for any interior from classic to modern.

This article is a complete guide to using polyurethane molding for doors. What elements exist? How to choose according to style? How to install on different types of walls? How to combine with the door leaf? How to paint so that the decor looks organic? Answers to all questions, practical advice, technical nuances — everything is here.

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Anatomy of Door Decor: What's What

Before choosing and buying, let's understand the terminology. Which elements belong to door decor, how do they differ functionally and visually?

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Door Surrounds: Function and Aesthetics

A door surround is a strip framing the door opening along the verticals and the top horizontal. The main function is to hide the technological gap between the door frame and the wall, creating a neat joint. The aesthetic function is to give the opening completeness, linking the door with the overall interior.

Standard surrounds. Flat strips 60-80 mm wide, often made of MDF with film coating or plastic. They are supplied with budget doors, performing a utilitarian function without claims to decorativeness. The profile is simple — a rectangle with slight edge rounding. The color is usually wood-like (oak, walnut, wenge) or white.

Decorative polyurethane surrounds. Profiled strips 80-150 mm wide with relief — beads, flutes, ornaments. They not only close the gap but create architectural expressiveness.Polyurethane molding for doorsin the form of surrounds is available in dozens of profiles: from restrained classical with one or two beads to lush Baroque with molded scrolls.

The width of decorative surrounds varies. Narrow (80-100 mm) are suitable for small rooms where a wide surround would look bulky. Medium (100-120 mm) — universal, suitable for most interiors. Wide (120-150 mm and more) — for spacious rooms, high ceilings, where significance is needed.

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Polyurethane molding NPU-416.4

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Portals: The Grandeur of the Opening

A portal is a framing of an opening without a door (for example, between a living room and a dining room) or an opening with a sliding door. A portal creates a sense of a solemn transition between spaces, architecturally structuring the interior.

A portal consists of two vertical elements (pilasters, half-columns, or simply wide profiled strips) and a horizontal lintel on top (architrave, cornice). Often supplemented with decorative overlays in the corners (capitals, corner elements with ornament), a keystone in the center of the upper part.

Polyurethane portals imitate classical architectural forms. Pilasters with base and capital, architrave with beads and triglyphs, keystone with carved ornament — all this creates an impression of solidity, history, connection with traditions. At the same time, installation is simple (glued to the wall), weight is minimal (does not require structural reinforcement), price is affordable (tens of times cheaper than plaster or stone portal).

Overlays on the Door Leaf: Door Individuality

Polyurethane door overlaysare decorative elements that are glued directly onto a smooth door leaf, creating relief, divisions, ornament. This is a way to turn a simple smooth door into a paneled, carved, exclusive one.

Rectangular overlays. They imitate traditional door panels. Polyurethane frames of rectangular shape are glued onto a smooth surface — usually two vertical sections on each leaf. Frames can be simple (smooth profile with a bevel) or ornamented (carved beads, reeds, ribbons).

Square and round overlays. Central decorative elements — rosettes, medallions, coats of arms. Glued in the center of the panel or in the upper part of the door. Create an accent, attract attention. Especially popular in classic and palace interiors.

Vertical overlays. Narrow long elements dividing the door leaf into vertical sections. Create rhythm, elegance, visually increase the height of the door. Used in high interiors with ceilings from 3 meters.

Ornamental overlays. Plant swirls, geometric patterns, stylized architectural elements. Glued in the corners of panels, around the perimeter of the door, create richness of decoration. Characteristic of Baroque, Empire, Art Deco styles.

Capitals and brackets: accents above the door

Capital — a decorative element placed in the upper part of the vertical plank of the architrave or pilaster of the portal. Imitates the classical architectural capital of a column — Corinthian (with acanthus leaves), Ionic (with scroll volutes), Doric (with a simple echinus cushion).

Polyurethane capitals are glued on top of architraves, turning them into simplified pilasters. This gives the opening architectural solemnity without the complexity of a full portal.

Brackets — corner decorative elements placed in the upper corners of the opening between the vertical and horizontal architrave. Brackets perform a visual function — create a smooth transition, support the horizontal plank (purely visually, there is no structural load). The shapes of brackets are varied: from simple corner scrolls to complex carved compositions.

Replacing standard architraves: simple, fast, effective

The most affordable way to upgrade interior doors is to replace standard architraves with decorative polyurethane ones. This does not require door removal, complex tools, or professional skills. Can be done in a few hours by yourself.

Removal of old architraves

Standard architraves are attached either with finishing nails (headless) or with liquid nails (adhesive). Removal depends on the type of fastening.

Nails. Carefully pry the architrave with a thin putty knife or pry bar in several places, gradually pushing it away from the wall. Nails are pulled out with the architrave or remain in the wall (pull out with pliers). Try not to damage the door frame and wall — work slowly, without jerking.

Adhesive. Pry the edge of the architrave, insert a putty knife into the gap, run it along the entire length, cutting the adhesive layer. Then pull the architrave towards you. If there is a lot of adhesive and it is strong, the process is difficult — use a wide putty knife, leverage, patience. Cut off adhesive residue on the wall and frame with a knife, sand it.

After removal, inspect the surface. If there are chips in the plaster, dents — fill with acrylic putty, level, sand after drying. The surface must be level, clean, dry — this is the foundation for quality installation.

Selection of decorative polyurethane architraves

Decorative architraves are selected by width, profile, style. Width depends on the size of the room and the width of the door frame. For a standard frame thickness of 70-80 mm, architraves 90-110 mm are suitable (they cover the gap with a margin of 10-15 mm on each side). For wide frames (100-120 mm) — architraves 120-140 mm.

Profile is chosen to match the interior style. For classic — profiles with reeds, flutes, restrained ornament. For Baroque — lush carved profiles with scrolls, leaves. For Art Nouveau — laconic with smooth curves. For minimalism — simple rectangular or with one reed.

Color. Polyurethane architraves are supplied white primed. You can leave them white (universal solution, suits any walls), paint them the color of the walls (the architrave blends with the background, the door looks like a portal), paint them the color of the door (a unified door structure is created), paint them a contrasting color (the architrave becomes an accent).

Installation: step-by-step instructions

Step 1: Marking. Measure the height and width of the opening. Mark on the wall lines where the inner edges of the architraves will pass (usually at a distance of 5-10 mm from the edge of the door frame — a technological gap to compensate for unevenness).

Step 2: Corner fitting. Architraves are joined at corners at a 45-degree angle (like a picture frame). For precise cutting, use a miter box (tool for cutting at fixed angles) and a fine-tooth saw or a miter saw. Measure the length of vertical architraves from the floor to the starting point of the horizontal architrave. Cut the top end at a 45-degree angle. Similarly, fit the horizontal architrave — both ends at 45 degrees, length equal to the width of the opening plus double the width of the architrave (so that the joints meet perfectly).

Step 3: Applying adhesive. Use polyurethane adhesive (e.g., Titebond Multi-Purpose, Moment Crystal) or liquid nails for polyurethane. Apply adhesive to the back of the architrave in a zigzag or dots at intervals of 10-15 cm. Do not apply too much — excess will squeeze out when pressed, staining the wall.

Step 4: Installation. Place the architrave against the marked line, press evenly along the entire length. Hold for 1-2 minutes until the adhesive sets. For reliability, you can secure with painter's tape for 2-4 hours until the adhesive dries completely. If the wall is uneven and the architrave does not fit tightly — use additional fixation with finishing nails in inconspicuous places (driven into recesses of the profile, heads are puttied).

Step 5: Sealing joints. After the adhesive dries (24 hours), inspect the joints. If there are gaps (it is difficult to fit corners perfectly, especially for beginners), seal with acrylic sealant. Squeeze sealant into the gap, smooth with a wet finger, remove excess with a damp sponge. After the sealant dries (2-4 hours), you can paint.

Painting architraves

If you plan to paint, do it after installation and sealing joints. Painting after installation ensures uniformity of coverage — joints, puttied areas, the entire architrave are painted simultaneously, there will be no color differences.

Use water-based acrylic paint. Apply thin coats with a brush (for relief profiles) or a short-nap roller (for smooth areas). Two coats are usually sufficient for dense coverage. Drying time between coats is 2-4 hours. After painting, protect the architraves with painter's tape during final wall finishing.

Creating portals: when there is no door, but the opening is solemn

A portal is the framing of an opening without a door or with a sliding door, when ordinary architraves look insufficient. Portals create architectural significance for the opening, turning it into a compositional element of the interior.

When a portal is appropriate

Portals are appropriate in several cases. An opening between formal rooms (living room-dining room, hall-living room) where you want to emphasize the significance of the transition. Wide openings (more than 1.5 meters) where ordinary casings look too modest. High ceilings (from 3 meters), allowing the use of large-scale architectural elements. Classic interiors (Baroque, Empire, Classicism), where portals are historically organic.

Portal elements made of polyurethane

A typical portal includes several elements. Vertical pilasters — flat columns attached to the wall, with a base (the lower expanded part), a shaft (the main part, which can be smooth or fluted), and a capital (the upper decorative part with ornamentation). Horizontal architrave — a beam resting on the capitals, often profiled with projections and recesses. Decorative overlays — corner elements, brackets, keystone (the central overlay on the architrave), additional ornaments.

Polyurethane elements allow you to assemble a portal like a constructor. Pilasters are usually composite: base separately, shaft (several sections for great height), capital separately. The architrave can also be composite for a wide opening. All elements are glued to the wall, joints are filled with putty, and then everything is painted a uniform color.

Portal installation: sequence of actions

Planning. Draw a sketch of the portal with dimensions. Determine the height of the pilasters (from floor to the start of the capital), the width of the opening, the sizes of the capitals and architrave. Select elements from the manufacturer's catalog, calculate the quantity.

Marking. Draw the contours of the future portal on the wall around the opening. Vertical lines for pilasters (on both sides of the opening), a horizontal line for the architrave. The marking must be symmetrical relative to the center of the opening.

Installing the bases. Start with the pilaster bases. Glue them to the wall with polyurethane adhesive at floor level according to the markings. The bases set the position of the entire portal, so accuracy is important. Use a level, check for verticality.

Installing the pilaster shafts. Glue the shafts on top of the bases. If the shaft is composite (several sections), the joints must be even, without steps. Temporarily secure with painter's tape until the adhesive sets.

Installing the capitals. Glue the capitals onto the upper part of the shafts. Capitals are usually wider than the shaft, projecting forward and to the sides — this creates architectural logic (the column widens towards the top to support the beam).

Installing the architrave. Glue the horizontal beam on top of the capitals. The architrave should rest on the capitals, creating the illusion of structural logic. If the opening is wide and the architrave is composite — carefully fit the joints.

Decorative overlays. Add corner elements, brackets, keystone. These elements enhance the decorativeness, making the portal complete.

Puttying and painting. After the adhesive dries (24 hours), fill all joints with acrylic putty, sand. Prime the puttied areas. Paint the entire portal with acrylic paint in 2 coats. Portals are usually painted white or cream (classic option), but other solutions are possible — gilding of capitals, patination, colored painting.

Combining molding with door leaf: harmony of styles

Framing doors with polyurethane moldingmust harmonize with the door itself. Style, color, scale of decoration — everything should work as a single whole.

Classic doors and carved casings

If you have classic paneled doors made of solid wood or veneer (oak, walnut, mahogany) with carved elements, decorative polyurethane casings should match in opulence. Choose profiled casings with beads, flutes, and ornamentation. Width 100-130 mm. Color — either matching the door (painting casings to match the wood color with special paints or patination), or contrasting (white molding on dark doors).

Add overlays to the door leaf if the door is smooth but you want panels. Glue polyurethane frames imitating traditional panels, paint to match the door color. The door will acquire a classic look with minimal cost.

Modern doors and laconic profiles

Modern smooth doors (concealed hinges, no milling, matte finish) require restrained framing. Choose simple casings 80-100 mm wide with minimal relief — one bead, a slight bevel, nothing extra. Color — either matching the door (monochrome solution), or matching the walls (the casing blends with the background, the door appears built-in).

Avoid opulent carved elements — they conflict with the laconicism of a modern door, creating eclectic dissonance (unless it's a conscious designer's technique).

White doors and white molding

A white door with white casings is a universal solution suitable for any interior. Even if the walls are colored, a white door group creates freshness, cleanliness, and visual expansion of space.

For a white door, choose white polyurethane casings of any profile — from simple to carved. It all depends on the interior style. In Scandinavian minimalism — simple. In classic — profiled. In Provence — with light patination (white base, grayish patina in recesses for an antique effect).

Contrast solutions: playing on opposites

Contrast is a bold solution that works when precisely hitting the style. A dark door (wenge, walnut, black) with white carved casings creates drama, graphic quality, characteristic of English and American classic interiors. A light door (whitewashed oak, ivory) with dark laconic casings (graphite, anthracite) creates modern elegance.

Colored solutions are rare but possible in eclecticism. A turquoise door with gilded casings, purple with silver, black with copper. The main thing is a sense of proportion, to avoid sliding into kitsch.

Installation on different wall types: nuances for each material

Walls vary, and the technique for installing molding depends on the base material.

Concrete and Brick: Durable but Demanding

Concrete and brick walls are durable but have poor adhesive absorption. For reliable molding installation on such walls, preparation is needed.

Primer. Always prime the wall with a deep-penetration primer before installation. Primer improves adhesion, allowing the glue to bond better. Apply the primer with a brush or roller and let it dry (2-4 hours).

Adhesive. Use polyurethane adhesive or high-strength liquid nails (for heavy materials). Apply more generously than on drywall.

Additional Fixation. For wide, heavy elements (portals, wide casings), use additional mechanical fixation. Drill through the molding into the wall (using a 6 mm concrete drill bit), insert wall plugs, and screw in self-tapping screws. Sink the screw heads into the molding, fill with putty, and sand them down—after painting, they will be invisible.

Drywall: Lightweight and Requires Caution

Drywall walls are common in modern renovations. They are lightweight, even, and convenient for molding installation. However, they require care—drywall is fragile and cannot withstand heavy loads.

Adhesive. Polyurethane adhesive or liquid nails work excellently for securing lightweight molding to drywall. Apply the adhesive evenly and press the molding for 1-2 minutes.

No Mechanical Fixation Needed. Usually, adhesive is sufficient; screws are not required. If you still want additional fixation (for extra security), use special drywall anchors (butterfly anchors, molly bolts)—they expand behind the drywall, creating a secure hold.

Caution with Weight. Do not install very heavy elements (massive portals, wide cornices) on drywall without reinforcing the wall structure. Drywall may not hold, sag, and the element could fall off.

Plastered Walls: Classic Requires Attention

Plastered walls (cement or gypsum plaster) are a traditional substrate. Their strength depends on the quality of the plaster.

Checking Strength. Tap on the wall—if the sound is dull and dense, the plaster is firmly attached. If it sounds hollow, the plaster is peeling—installing molding is dangerous, as it may fall off along with a piece of plaster. In such cases, reinforce the plaster with deep-penetration primer or remove weak areas and replaster.

Adhesive and Primer. Prime the wall and use polyurethane adhesive. The installation technique is standard.

Wallpaper and Painted Walls: Surface Preparation

If walls are wallpapered or painted, installing molding requires a special approach.

Wallpaper. You can glue molding over wallpaper, but it is unreliable. The adhesive may hold the molding to the wallpaper, but the wallpaper could peel off the wall under the weight of the molding. It is recommended to remove the wallpaper in the installation areas (cut a strip slightly wider than the molding), prime the wall, and then glue the molding. After installation and painting of the molding, re-adhere the edges of the wallpaper close to the molding—this will look neat.

Paint. Painted walls are a good base if the paint is firmly adhered. Test by running your fingernail over the paint; if it doesn't peel, you can glue the molding. If the paint is old and peeling—sand it down, prime it, and then proceed with installation.

Painting Door Molding: Techniques and Color Solutions

Painting is the final touch that can enhance or ruin the decorative effect. How to paint door molding so it looks organic?

Matching the Door Color: Unity of Design

Painting casings and overlays to match the door leaf creates a unified door structure. The door and its frame are perceived as a whole, making the opening appear larger.

If the door is wooden (stained to resemble walnut, oak, wenge), the casings can be painted the same color using paint tinted to match the wood tone or by using a tinting glaze varnish (it applies a semi-transparent layer, imitating wood grain, but the effect on polyurethane is weaker than on wood).

If the door is painted (white, gray, colored), paint the casings with the same paint in the same color. Precise color matching is critical—even a slight difference will be noticeable in bright light.

Matching the Wall Color: Blending with the Background

Casings painted to match the wall color create an effect where the door appears built-in, and the opening looks like a portal without visible framing. The molding is perceived through its relief, play of light and shadow, but not through color.

This technique visually expands the space, especially in small rooms. The absence of contrasting lines doesn't break up the wall, making the room feel more spacious.

Contrast Painting: Accentuating the Decor

Contrast—when casings are painted a color different from both the door and walls. For example, walls are beige, the door is walnut, and casings are white. Or walls are gray, the door is white, and casings are black.

Contrast painting highlights the decor, making it the main focal point. Use this when you want to draw attention to the door, especially if the molding is beautiful, carved, and worthy of notice.

Decorative Techniques: Patina, Gilding, Polychromy

For classical and palace interiors, use decorative techniques. Patination — a base color (white, cream, ivory) with dark patina (brown, gray) applied into the recesses of the relief to emphasize it. Gilding — casings and overlays are partially or fully gilded with metallic paint or gold leaf. Gilded capitals above the door combined with white casings are especially effective.

Polychrome painting — a rare but possible option. The base is one color, ornamental elements are another. Requires artistic taste and a steady hand.

Frequently Asked Questions about Door Molding

Can polyurethane molding be installed on an entrance metal door?

Yes, it can. Use two-component epoxy glue or high-strength polyurethane adhesive. Pre-clean the metal door surface with a solvent, lightly sand with fine sandpaper to improve adhesion. Overlays on a metal door add decorativeness and mask its utilitarian appearance.

Will polyurethane door molding withstand impacts and mechanical damage?

Polyurethane is stronger than plaster and does not crumble from light impacts. However, a strong blow (e.g., from furniture corner during moving) may leave a dent or chip. For high-risk areas (narrow hallways where furniture is frequently moved), choose overlays and casings with less relief protrusion — less chance of catching.

What is the cost of decorative polyurethane casings?

Prices depend on width, profile complexity, and manufacturer. Simple casings 80-100 mm wide — 300-600 rubles per linear meter. Profiled casings 100-120 mm wide — 500-900 rub./meter. Carved casings 120-150 mm wide — 800-1500 rub./meter. For a standard door opening (height 2.1 m, width 0.9 m), about 5 linear meters of casings are needed. Total from 1500 to 7500 rubles depending on choice.

Can door molding be used in bathrooms and kitchens?

Yes, polyurethane is moisture-resistant, not afraid of steam, and does not swell from moisture. For bathrooms and kitchens, it is an ideal material. After installation, paint the molding with waterproof acrylic paint for additional protection.

Is it necessary to prime polyurethane molding before painting?

Molding from the factory comes primed; additional priming is usually not required. But if joints have been filled with putty — prime the puttied areas before painting to prevent the putty from showing through the paint.

How to care for door molding?

Wipe with a dry soft cloth once a month to remove dust. Wipe with a slightly damp cloth and mild detergent every six months. Do not use abrasives or aggressive chemicals — they damage the paint. If scratches appear — touch up with a fine brush using the same paint.

Can polyurethane molding be removed without damaging the wall?

Yes, but carefully. Pry the edge of the molding with a putty knife, gradually pushing it off the wall. The adhesive stretches or tears. After removal, adhesive residue will remain on the wall — cut it off with a knife, sand it. The wall may require local repair (puttying, painting).

How long does it take to install door molding?

Replacing casings on one door opening — 2-4 hours (removing old ones, fitting new ones, installation). Installing overlays on a door leaf — 1-2 hours per door. Installing a portal — 4-8 hours depending on complexity. Plus time for adhesive to dry (24 hours) and painting (another day accounting for layer drying).

Conclusion: Doors as Works of Architectural Art

A door is not only a function (dividing spaces, privacy, sound insulation) but also a form — an interior element you see dozens of times a day. Why not make it beautiful?Polyurethane door moldingIt transforms a utilitarian opening into an architectural accent that sets the tone for the entire interior.

The company STAVROS offers everything needed to create impressive door framing. The assortment includes dozens of casing profiles — from simple, laconic to luxurious carved ones.Decorative InsertsHundreds of overlay designs — square, round, rectangular, vertical, ornamental — for turning a smooth door into a paneled one. Portal elements — pilasters, architraves, capitals, brackets — for creating grand entrance groups.

STAVROS product quality is verified by 23 years of operation and thousands of completed projects. Polyurethane density of 280-350 kg/m³ ensures strength, durability, and sharp relief. White factory primer is ready for any type of finishing — painting, patination, gilding. Precise geometry of elements guarantees perfect joining without steps or gaps.

The STAVROS website features detailed catalogs with photos, dimensions, and article numbers. Convenient filters help find what you need — by width, style, shape. A calculator estimates required material quantities. Educational articles and videos explain installation technology step-by-step — you can do everything yourself or show the instructions to hired craftsmen.

STAVROS works with retail customers and professionals. For designers, architects, and construction companies, special terms, personal managers, and assistance at all project stages are available. For private clients — free consultations, selection assistance, delivery across Russia.

Delivery is organized through trusted partners — transport companies experienced in shipping fragile goods. Packaging protects elements from damage. Delivery times are 1-10 days depending on the region. Cost is calculated automatically when placing an order.

STAVROS guarantees are not a formality but real responsibility. Product quality is checked at every production stage. If you find a defect — contact us, the issue is resolved promptly. Reputation built over decades is more valuable than a one-time gain.

Start transforming doors with STAVROS. Open the catalog, choose casings or overlays that resonate with your taste. Order, receive, install. After a few hours of work, your doors will gain character, style, individuality. Every time you pass by, you'll catch the play of light on the relief, the clarity of lines, the harmony of proportions. And think — how good that I didn't settle for standard plastic strips. I chose beauty. I chose STAVROS.