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Remodeling 101: Modern Plaster Walls, Six Ways

Have you found yourself staring at walls of late? We know we have. That’s because plaster in its many transfixing guises is making a big comeback. Interiors finished with plaster have a depth and luminosity that shifts with the light, quietly transforming the look and feel of a house. And there’s no paint required: Left in its raw state, plaster is an environmentally sound natural material—breathable, and free of chemicals and VOCs.


True, plaster walls are more expensive than painted drywall; that’s because they’re more labor intensive to install (most require at least three coats). But they’re also typically longer lasting and more beautiful. For interior applications, here are six main categories to consider illustrated by some of our favorite projects of late.


N.B.: Before taking the plaster plunge in your own home, look into substrate requirements; all plasters need to bond to a surface and that varies by type and brand—as does the durability and waterproofness of the particular plaster. Troweling skills are required and patience: You have to wait for each layer to dry.


Clay Plaster


Composed of clay, sand, and pigments, clay plaster is considered so healthy, it’s often used by people with chemical sensitivities. It comes in powdered form in a range of earthy shades and has very matte, often rough, finishes. Though not to be used in wet zones, such as bathrooms and kitchens, clay plaster has moisture-absorbing (and desorbing) abilities that make it a humidity regulator elsewhere in the house. To apply, mix with water on-site (achieving the right consistency takes some trial and error) and apply to a sanded, primed surface in four or five layers.


Current Obsessions Upcycled Finds Architect Simon Astridge Clay House bedroom with Clayworks clay plaster wall. Nicholas Worley photo. Above: In his own London home, architect used clay plaster from  of Cornwall. “It makes the space feel calmer and bigger,” he says. “And once it’s applied, you don’t need to decorate the walls.”

For a US source, consider  of Albuquerque. Photograph by Nicholas Worley.


Current Obsessions Upcycled Finds Architect Simon Astridge Clay House with Clayworks clay plaster wall. Nicholas Worley photo. Above: A plant niche and flush closet door are set off by Clayworks’ clay plaster in Astridge’s bedroom. Clayworks offers , and, like many plaster companies, mixes custom shades and textures on request. Photograph by Nicholas Worley.

Slaked Lime Plaster


This is what the plaster walls in your great grandparents’ house were made of. Starting with wood lath, a coarse “scratch coat” (plaster mixed with shrinkage-preventing aggregates, such as horse hair) was applied followed by a “brown coat” (plaster mixed with sand), and finally a fine skim coat. Composed of limestone that has been baked at extreme temperatures to remove all impurities, hydrated—or slaked—lime plaster comes in an aged putty form, so, unlike other options, you don’t have to hand-mix it and you’re not under a time constraint to apply it.


Pure white in its basic form, it now comes in a huge range of colors. Left unpainted, like clay plaster, it takes in moisture and releases it—and unlike clay plaster can be used in kitchens and baths (but shouldn’t be exposed directly to water). If desired, a protective layer of bee’s wax or Marseilles soap can be added.


Current Obsessions Upcycled Finds deborah ehrlich childs bed Above: In designer Deborah Ehrlich’s Upstate, New York, house, a preserved hole in the wall reveals the plaster under layers. (These days a moisture-absorbing board known as blue board has replaced lath.) See more of Ehrlich’s remodel in .

Architectural preservationists of Columbia, South Carolina, specialize in slaked lime plasters, and resident designer, Lauren Dillon, is a fount of information about why, where, and how to use it. She explains: “After being applied, hydrated lime plasters go through a process called curing wherein they don’t necessarily dry out like a clay or a paint, but they absorb carbon dioxide and complete the lime cycle on your surface, in essence turning back to stone—so when people say lime plaster looks and feels like stone or marble, it’s because it truly is.” Photograph by for Remodelista.


Current Obsessions Upcycled Finds Domingue plaster wall finish. Above: Newcomer of Houston, an offshoot of antiques house Chateau Domingue, has recently begun offering a range of made-in-Italy wall finishes, including lime plaster (slaked for seven years, making it exceptionally durable, they say, and sold in powdered form). Domingue Architectural Finishes works with Axel Vervoodt’s plasterer and also offers limewash and natural pigment paints: Its far-ranging palette was formulated by master color specialist and friend of Remodelista Eve Ashcraft. [N.B.: Stay tuned for Domingue’s expert tips on using plaster, coming soon.]The project shown here was created using the line’s not only on the walls but also the floor. Corners, by the way, are the trickiest to trowel, and, once finished, they’re the area that’s most fragile and prone to chipping.


Current Obsessions Upcycled Finds Pink House Kitchen Addition London, Rectangular And Triangular Skylights, Simon Astridge Architects, Nicholas Worley Photo Above: In another Simon Astridge London project known as the Pink House, the raw plaster walls have a natural pink hue. See more of the kitchen in .

Gypsum Plaster


More humble and finicky than slaked lime, gypsum plaster comes in powdered form: Mix with water and then work fast; once activated, gypsum plaster typically needs to be applied in 35 to 40 minutes. (Stop midway and you get weaknesses known as “cold joints” and have to start over.) It’s also a bit less expensive than lime plaster and requires fewer coats. And it can be tinted to great effect.


Current Obsessions Upcycled Finds Gordana Golubovic Living Room, Photo by Lauren Moore Above: In her formerly abandoned Los Felix home, Gordana Golubovic upgraded her living room walls and ceiling with  plaster from National Gypsum. Tour the rest of her remodel in . Photograph by Lauren Moore.

X-Kalibur is a product from National Gypsum; another big supplier is USG (United States Gypsum).


Current Obsessions Upcycled Finds Skye McAlpine Kitchen by Jersey Ice Cream Co. Above: Gypsum plaster is the go-to for hands-on designer/remodelers Percy Bright and Tara Mangini of , members of the Remodelista Architect-Designer Directory who always create memorable plaster surfaces in their projects. And it’s viable in the kitchen—as long as it’s not exposed to high humidity. Shown here, JICC’s .

The difference between colored gypsum plaster and Venetian plaster (see below)? Gypsum is matte-finished and single-hued. Venetian plaster can be polished, and the many layers required create more depth and nuanced shades of color.


Current Obsessions Upcycled Finds Catskills Farmhouse front room parlor by Jersey Ice Cream Co Remodelista Above: A two-toned gypsum plaster entry wall in Jersey Ice Cream Co.’s . The duo have just begun offering plasterwork as a stand-alone service, and report that they most often use plaster tinted with pigment dispersions from .

Venetian Plaster


When pigment is added to aged slaked lime plaster, it’s known as Venetian plaster (not to be confused with any paints that use that name). Sprinkle in marble dust and you get a high level of polish and sheen.


Current Obsessions Upcycled Finds This Old Hudson event space, Zio & Sons, Hudson, NY Above:  provided the blue-gray Venetian plaster for the kitchen wall at This Old Hudson, an event space and photo studio in Hudson, New York: See .
Current Obsessions Upcycled Finds Eva Kosmas Flores Living Room Remodel Desk Above: Adventures in Cooking blogger—and first-time plasterer—Eva Kosmas Flores applied herself throughout her house. Tour her Portland, Oregon, remodel in .
Current Obsessions Upcycled Finds Leigh Herzig Spec House West Hollywood Above: Designer Leigh Herzig’s West Hollywood spec house opens to a sculptural winding stair and arched doorway with walls and ceilings clad in , a Venetian stucco from Los Angeles company . See more of the project below and in . Photograph by Laure Joliet.

Tadelakt


An age-old and highly durable Moroccan finish, tadelakt is composed of lime plaster and black soap made from olives. When the ingredients are combined, a chemical reaction between the two creates a waterproof membrane, making tadelakt walls the most suitable of all plasters for use in showers and baths and even as sinks and tubs—it’s synonymous with Moroccan hammans. Read all about it in our post.


Current Obsessions Upcycled Finds Tadelakt kitchen wall in Leigh Herzig spec house West Hollywood photographed by Laure Joliet Above: In Herzig’s West Hollywood spec house kitchen, the walls and ceiling are finished in  by  in LA.

“It’s completely waterproof—you just clean it with Marseilles soap,” says Herzig. “Because it’s so durable, I didn’t have to add a backsplash, which gives the room a clean look.” Photograph by Laure Joliet.


Current Obsessions Upcycled Finds tadelakt bath london painted shutters Above: A tadelakt bath at ‘s Milos House, one of a compound of vacation rentals designed by architect Yannis Kaklamanis on the Greek island of Santorini.

Neo Plaster


A lot of companies are coming up with their own easy-to-apply plaster wall finishes. These often contain acrylics and other ingredients that speed the process and don’t require as many coats.


Current Obsessions Upcycled Finds Vegetarian Food Blog Our Food Stories' Berlin Photo Studio Antique Farmhouse Table Textured Gray Walls, Photo Laura Muthesius Above: of Copenhagen caught our eye in . Available throughout Europe and billed for DIYers, the plaster comes in a range of nuanced colors and is troweled on typically in two layers and sanded between applications. A new offshoot product is made for wet zones and for use as flooring. Photograph by Laura Muthesius.

Curious about limewash paint? Read about the mineral-based, chalky wall finish in:

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