The best ideas to transform your walls with faux moulding
A hallmark of Haussmann-era interiors and apartments full of character, moulding instantly evokes elegance and classic craftsmanship. Yet between the cost and complexity of traditional plaster or solid wood installation, it often remains out of reach for a simple decorating project. Faux mouldings make this effect far easier to achieve, whether in polyurethane, polystyrene, MDF or reproduced as trompe-l'œil on wallpaper. Here is how to choose them, install them and bring them into every room, whatever your style.
What is faux moulding?
Faux moulding is a lightweight element that imitates the look of traditional plaster or wood mouldings. There are two families: raised trims in lightweight materials, glued directly onto the wall; and trompe-l'œil mouldings, printed on wallpaper or a border, which recreate the play of light and shadow of relief without any thickness. In both cases, these decorative elements are installed without major works or a specialist craftsman, for an immediate result in the room.
What are the different types of moulding?
Mouldings fall into several families depending on their position: the cornice, which highlights the junction between wall and ceiling; the dado rail, which marks a horizontal division at mid-height; the skirting board, which finishes the bottom of the wall at floor level; and moulded frames, which outline decorative panels. To these can be added the ceiling rose and corner trims. All of these wall mouldings exist in faux versions, making it possible to recreate a complete architectural style, from floor to ceiling.
Wood, polyurethane, wallpaper: what to choose for faux moulding?
Polyurethane is the most widely used material: rigid, light and precise, it offers a finish very close to plaster and is easy to paint. Polystyrene, more affordable, suits smaller budgets but dents more easily. MDF and wood are favoured for skirting boards and frames, with a warm look. Finally, trompe-l'œil wallpaper reproduces a moulding without relief: ideal for uneven walls, rentals or rooms where you want a result with no thickness. For a bathroom, choose a material that withstands humidity.
How do you create faux mouldings on a wall?
For raised mouldings, first mark your lines with a spirit level on the wall, cut the trims at 45° in the corners using a mitre box, then glue them with a suitable adhesive sealant. Fill the joints, sand lightly and paint everything for a harmonious finish: a tone-on-tone shade is particularly elegant. For trompe-l'œil faux moulding, installation is even simpler: apply a border or a moulding-pattern wallpaper panel exactly where a real moulding would sit, just like classic wallpaper.
What is the difference between a dado rail and a moulding?
Moulding is a generic term for any decorative relief applied to a wall, whereas a dado rail refers more specifically to a horizontal moulding installed at mid-height, historically used to protect walls from chair backs. In today's interiors, it mainly serves as a dividing line between two different wall treatments, for example between wainscoting and a plain upper wall.
How can I create wainscoting?
Wainscoting is achieved by dressing the lower part of the room, usually up to about a third of its height, then marking the transition with a dado rail. It can be created with raised frames painted in a deeper shade, or with a band of moulding-pattern wallpaper topped with a fine border. This technique gives structure to a room and a more finished look, especially in an entrance hall, dining room or bedroom.
Faux moulding: decorating ideas room by room
In the living room, wood or polyurethane moulded frames behind the sofa add a classic touch, even in a modern interior. In the bedroom, mouldings can outline a faux headboard, and a matching moulded skirting board completes the effect. Up high, a cornice paired with an LED strip creates a very soft indirect light, and curtains hung just below accentuate the height. In the entrance or hallway, a mid-height trim protects the walls while decorating them. As for upkeep, a damp cloth is enough for painted mouldings, and regular dusting for wallpaper.
Faux or traditional mouldings: pros and cons
Traditional mouldings offer deep relief and an unrivalled finish, but they require a craftsman, time and a substantial budget. Decorative faux mouldings, on the other hand, are light, easy to cut and install, and cost far less. Their main drawback: relief that is sometimes less pronounced and a finish that depends on the care taken with the paintwork. Trompe-l'œil wall mouldings, finally, have no thickness at all: they suit rooms where you cannot drill or glue, and adapt to uneven walls.
What budget should you plan for faux mouldings?
The budget depends on the material and the surface to be covered. Polystyrene mouldings are the most affordable, polyurethane mouldings sit in the mid-range, while solid wood remains the most expensive. Remember to add adhesive, paint and, if needed, matching skirting boards and dado rails for a coherent scheme. A trompe-l'œil wallpaper border or panel is often an attractive alternative for dressing a large wall in one go.
Wall mouldings and style: from classic to modern
Mouldings are no longer reserved for classic interiors. In a modern interior, moulded panels painted the same colour as the wall create a subtle touch of relief. In a bathroom or kitchen, polyurethane mouldings resist humidity. Moulded skirting boards and dado rails structure living spaces, while cornices and ceiling roses enhance a ceiling. Combined with concealed LED lighting, mouldings even become a source of ambient light. This raised decor also pairs beautifully with floor-length curtains, for an assertive elegance throughout the room.
Skirting boards, dado rails, cornices: how to combine them?
For a coherent scheme, think of your wall mouldings as a whole. Moulded skirting boards dress the lower part of the room and connect with the floor; dado rails structure the middle section; cornices frame the top and soften the angle with the ceiling, profiles that are easy to paint once installed. Choose profiles from the same range to keep harmonious lines, and paint skirting boards, dado rails and cornices in the same tone for a refined decor. In a high-ceilinged room, you can add moulded panels in the upper section; in a lower room, keep to skirting boards and a slim cornice.
Our installation tips
- Prepare the surface: a clean, dry and flat wall ensures good adhesion of the trims.
- Take care with the joins: cut each trim at 45° for inside or outside corners and dry-fit the assembly before gluing.
- Paint after installation: a primer followed by two coats of paint evens out joints and joins.
- Think about lighting: a hollow profile up high can house an LED strip for indirect light.
- Clean simply: a soft cloth is enough; in the bathroom, opt for decorative mouldings that resist humidity.
Wooden wall mouldings: a warm choice
Wood remains a safe bet for wall mouldings. Skirting boards and dado rails in raw or painted wood bring warmth to a room, whether a bedroom, living room or entrance. Each wooden trim is easy to work, can be stained or painted to suit the desired mood, and ages well. For a country-style room, keep the wood visible; for a more contemporary space, paint it in the colour of the walls. Wooden mouldings require a little more care than polyurethane, but their natural touch makes all the difference in a room with character.
Bathroom, kitchen, entrance: where to install wall mouldings?
In a bathroom, polyurethane wall mouldings resist humidity and add an unexpected decorative note above a bathtub. In the kitchen, a moulded skirting board protects the bottom of the walls. In the entrance, raised frames create a first impression of elegance as soon as your guests arrive. In a hallway, repeated elements create a rhythm that visually lengthens the space. Everywhere, the key is restraint: a few well-placed lines are enough to transform a corner or an entire wall.
Where to buy quality faux mouldings?
The wall moulding market is vast: DIY superstores for standard polystyrene trims, specialist manufacturers for more detailed wood or polyurethane mouldings, and wallpaper houses for trompe-l'œil decors. Before buying, compare materials, depth of relief, how easy the profile is to paint and the length of the trims. Customer reviews, photos from other customers and product page content (dimensions, substrate, installation advice) will help you make the right choice. For old or uneven walls, a printed decor is often the simplest solution: it follows the walls without leaving gaps, is hung like wallpaper and can be combined with an LED strip or curtains to complete the decor.
Our trompe-l'œil borders and mouldings
Our Wainscotings & Mouldings collection brings together our designs created to recreate this classic architectural spirit. Auguste Moulding Frieze faithfully reproduces the play of shadow of a carved moulding, for a particularly realistic effect. Bespoke Auguste Wainscoting lets you dress the lower part of a wall to measure, in harmony with the frieze of the same name. Finally, Édouard Frieze offers a more refined, graphic alternative for contemporary interiors.
FAQ
How do you create faux mouldings on a wall?
By gluing polyurethane, polystyrene or MDF trims cut at 45° in the corners, then painting them; or by hanging a trompe-l'œil moulding-pattern wallpaper border or panel, with no building work.
What are the different types of moulding?
The main types are the cornice (wall-ceiling junction), the dado rail (horizontal division at mid-height), the skirting board (bottom of the wall) and moulded frames, all available as faux moulding.
What is the difference between a dado rail and a moulding?
Moulding is the generic term for any wall relief, whereas a dado rail is a specific horizontal moulding installed at mid-height to mark a division.
How can I create wainscoting?
By dressing the lower part of the wall, up to about a third of its height, with moulded frames or a moulding-pattern wallpaper, then marking the transition with a dado rail.
