Exterior Decoration and Exterior Polyurethane Cladding

Exterior decoration products: polyurethane jamb, sill, floor band, corbel, column and keystone. It does not absorb water (below 1%), does not rot, and does not add load to the facade; it can be applied in any color by painting.

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Classic Wedding Hall Polyurethane Exterior Design in Şanlıurfa

What is exterior polyurethane cladding?

Exterior polyurethane cladding is the common name of the decorative profile family applied to the exterior surface of the building. This family is not a surface cladding, but a set of elements: jambs around windows and doors, sills under windows, bands between floors, corbels under eaves, columns and arches at the entrance, crowns or keystones above windows. When these elements come together, the proportion, shadow, and character of the facade are established.

The material is rigid closed-cell polyurethane. The closed-cell structure stops water from advancing into the body: water absorption is below 1%, density is 150-220 kg/m³ (production target ~160 kg/m³), fire class is B2 (flame retardant), service temperature is -100 °C / +80 °C. The elements are not load-bearing and do not serve as insulation; their task is to establish the appearance of the facade.

Material comparison in exterior decoration

The same facade appearance can be achieved with stone, precast concrete, plaster, EPS (styrofoam) or polyurethane. The difference is not in the appearance, but on the facade over time and at the construction site. Precast concrete and stone are massive; they require cranes, anchors, and static calculations, and add to the building load. Plaster deteriorates against moisture outdoors; it is essentially an interior material. EPS is lightweight but not rigid on its own; it requires a layer of mesh and plaster on it; when this layer cracks, water advances inside.

Polyurethane is rigid on its own and does not require an additional coating layer; because it does not absorb water and is light, it is applied without a crane in existing building renovations. On the other hand, the texture and aging style of real stone is unique — in projects with suitable budgets and statics, stone is still a strong choice.

Criterion	Polyurethane	Precast concrete / stone	EPS (styrofoam)	Plaster
Weight	Light	Heavy — crane and anchor	Light	Medium
Against water	Water absorption below 1%	Absorbs water, frost risk	Takes water if coating cracks	Deteriorates outdoors
Additional layer	Not required	Not required	Mesh + plaster mandatory	Not required
Detail sharpness	Detail from mold is preserved	High, limited by weight	Plaster softens detail	High
Impact on building load	Low	Included in static calc	Low	Low

How is the facade project set up?

A healthy exterior facade decoration setup progresses in three steps. The first is measurement and detection: facade photography, window-door measurements and floor heights are extracted. Since high-precision 3D scanning can be done, the existing facade can be exactly modeled and the final appearance can be seen even at the project stage. The second is style and scale: a single profile family is selected; sections are proportioned to the window width and facade height. The third is quantity survey: the line of each element is measured separately, an allowance for waste is added (10% plain, 15% patterned).

The application sequence also determines the result: surface preparation, dry rehearsal, installation with PU-based mounting adhesive, joint filling, smoothing with 180-220 grit and UV-resistant facade paint. Products come primed with white 1K acrylic primer and ship on an ex-works basis.

What is exterior decoration, what products does it consist of?

Exterior facade decoration is the common name for the profile family that gives character to the exterior surface of the building: jamb around the window and door, sill at the bottom, band separating the floors, corbel under the eaves, column and arch at the entrance, keystone at the top. These elements are not load-bearing; they establish the proportion, shadow, and perception of the facade. Polyurethane exterior decoration products have a rigid closed-cell structure: water absorption rate below 1%, service temperature -100 °C / +80 °C.

Exterior decor element	Role on the facade	Typical location
Jamb	Frames the opening, covers the joinery transition	Window/door perimeter
Sill	Moves water away from the wall	Below window
Floor band	Separates floors horizontally	Floor level
Corbel	Gives shadow and rhythm under overhangs/eaves	Eaves, under balcony
Column / pilaster	Establishes a vertical emphasis	Entrance, corner, facade axis
Keystone / pediment	Emphasis above the window	Above the jamb

Material selection in exterior decoration

The same appearance can be obtained with plaster, precast concrete, EPS (styrofoam) or polyurethane; the difference emerges in durability and at the construction site. Plaster deteriorates from moisture on exterior facades. Precast concrete is heavy, requires cranes and anchors, and adds to the building load. EPS is lightweight but its surface is soft, it lags behind in impact resistance and detail sharpness. Polyurethane does not absorb water, does not rot, is lightweight, and maintains the sharp detail from the mold.

How is a facade decoration project designed?

First, the window/floor layout is extracted using facade photographs and measurements; then a single profile family is selected (classic, Ottoman, modern). The sections are proportioned to the window width and facade height. Since high-precision 3D scanning is possible, the existing facade can be exactly modeled and the final appearance can be seen as a render in the project phase.

What products do polyurethane exterior elements cover?

The facade program is grouped into five main categories. Window and door jambs form the frame of the openings and reduce thermal bridges. Columns are paired with 20, 30, 40, 50, 60 and 80 cm diameters; plain, fluted, and helix bodies and Doric, Ionic or Corinthian capitals. Cornice and eave profiles define the upper line of the facade, sills define the underside of the windows. Corbels and brackets give a load-bearing appearance under overhangs and balconies. Crowns, arches, and motifs are used at focal points such as entrances and balconies.

At what point does the polyurethane facade element differ from styrofoam (EPS)?

The difference starts with density: rigid polyurethane is produced in the 150-220 kg/m³ (production target ~160 kg/m³) range, the production target is ~150-220 kg/m³ (production target ~160 kg/m³); EPS, on the other hand, has a much lower density. For this reason, in severe hail storms, EPS surfaces are punctured and cratered, while polyurethane maintains its structural integrity. The closed-cell structure absorbs less than 1% water, the temperature range is -100 °C / +80 °C; the material does not work dimensionally. Its fire behavior is in the B2 (hardly flammable) class: thanks to the phosphorus-based flame retardants in the raw material, it extinguishes itself when the flame source moves away.

How is exterior installation done?

The sequence is mandatory. 1) The surface is cleared of dust, oil, and moisture; loose plaster and paint are scraped off. Because the material has a high density, it is not cut with a utility knife; a fine-toothed hand saw or a miter saw is used, and 45° miters are made at the corners. 2) Silicone-based adhesive is not used; PU-based mounting adhesive (Polure Polfix) is applied as a continuous line to both the surface pressing on the wall and the joints of the parts, the overflowing part is wiped with a damp cloth before drying. 3) Screws are mechanically mandatory: outdoors, the parts are mutually screwed to each other, the screw heads are embedded into the material. 4) Joints and screw heads are filled flush with exterior filler putty, when dry, they are smoothed with 180-220 grit sandpaper.

How should paint, primer and UV protection be?

The white industrial acrylic primer from the factory is a technical base for paint adhesion; if the topcoat is not applied, the product fades over time under the influence of UV rays. Before paint and primer, the entire surface is slightly matted with 180-220 grit sandpaper and cleaned — mold release residue used in production can cause the paint to flake off. A critical rule for warranty: whichever brand the topcoat paint is, the primer must be the same brand's system primer; otherwise, paint manufacturers do not accept responsibility for blistering and peeling. Highly elastic, UV-resistant exterior facade systems are preferred outdoors.

In which building types is it used?

The application area is not limited to a single building type. In villas, the character of the facade is determined by the trio of jamb, column, and cornice. In wedding halls, wide facades are emphasized with series of crowns, arches, and columns; in commercial facades such as hotels, cafes, and shops, brand visibility comes to the forefront. In apartment and housing estate projects, a fast and light facade renovation is made with repeating window jambs. The applications in the gallery are compiled from projects in different climatic conditions such as Tokat, Gaziantep, Sanliurfa, and Gebze.

How are size, custom production, and price determined?

For an offer, the measurement of the application area in linear meters or m², up-to-date photographs, and location information are required. If cladding is to be done, the widest point of the element to be clad is measured, and the inner diameter of the column is selected larger than this measurement; if it is to bear a load, the iron carcass passing through takes over the carrying task — the polyurethane column does not carry loads, and concrete is not poured into it. Models, motifs, and dimensions not in the catalog can be produced with 3D scanning and CNC; 3D design and on-site discovery are subject to a fee. The price covers only the product cost; products are ex-works.