Guest Blog – Whitson’s Impasto Plaster

An Example Of Whitsons Impasto Primer Used To Give Texture On A Wall
You can use Whitsons Impasto Plaster to texture and interest to walls.

We are relaunching our “Decorative Plaster” as “Impasto Plaster”. Why are we relaunching? Because we want to make a big thing about how great and versatile this product is and we needed a different word to describe what it did. Hopefully the word “Impasto” will help artists, decorative painters and gilders understand a little more what this product does.

Since we are relaunching we also thought it would be fun to share some techniques with the ever-wonderful GLS customers and show you something of what it can do.

Whitson’s Impasto Plaster is a versatile clay based plaster for adding texture to any decorative finish on interior surfaces. It is easy to use, comes in a neutral base – fully tintable with universal colourants – and dries to a hard, durable film. It can be used to create embossing and textured finishes, can be over-coated with all paints and enhanced with glazes, waxes, gilding and protective topcoats. Alternatively, it can be used as a finish without extra coats if required. It can be polished like a lime plaster too.

Apply with trowel, spatula, sponge or roller to an optimum depth of no more than 1- 2mm at a time to avoid cracking (although you can crack it if you want to… I’ll talk about that later).

An Image of A Striped Effect On A Wall Achieved Using Impasto Plaster And Metal Leaf
Using Whitsons Impasto Plaster and either metallic paint or metal leaf you can create your own fantastic striped effects!

The first technique is done using metallic foil beneath, but you could use Roberson’s Liquid Metal to equal effect.  We then used 6mm masking tape to mask off the stripes, we laid US style cheesecloth (a sort of open weave muslin) over the surface which has a more open weave than many fabrics however you could use all sorts of fabrics, like lace or a scrim type material or none at all…this is a product definitely worth playing with. Then the plaster was tinted using Mixol colourants and applied with a small trowel. You could also roller it on, just thin it a little with water beforehand. Then we allowed it to set up till it was beginning to become firm.  Do test pull away of the cloth, if it goes into nasty peaks it’s too soon. Don’t panic though if it does get peaks you can sand these off.

Finally, we used a white scumble glaze tinted with Polyvine Universal tints, which is a nice clean white.

If you want to encourage cracking then thicker layers can be applied and/or force dried with a hairdryer will give a more dramatic effect. You can also put some crackle glaze underneath it but practice that one first, you can only touch the plaster once as you apply it.

Cracked Plaster Effect

Here are a couple of examples of cracking –

This chest of drawers was primed, and the plaster was trowelled through a stencil. The plaster was then blow dried to encourage cracking. The surface was painted black, sized and we used foil, however you could use a foam roller and silver paint and “dry roller” over the top. It was then glazed with a black glaze (I used Polyvine acrylic glaze tinted with Polyvine tints) and varnished. A stage could have been cut if the plaster had been tinted black.

Flexibility

Because of its unique flexibility this product is perfect for use on flexible substrates like canvas and for off-site application of installation work. This flexibility means it can be applied to a variety of surfaces and shipped to site without concerns of delamination. The acrylic and clay formulation mean there are no concerns with incompatibility with other water-based products.

Here is a finish carried out by Lesley Anne Kinney of Bespoke Decorative Artisans. She has used a patterned croc roller to create the texture, but just check out how flexible this really is.

As this is a clay and acrylic medium – seal any raw substrate with a suitable primer sealer, for already coated surfaces apply Whitson’s Superior Adhesion Primer unless it is coated in an acrylic coating already.

Impasto Plaster dries in 20/30 minutes depending on the thickness of the coat applied.

Once the film feels hard and no longer cold you can recoat the Impasto Palster. To render the plaster scrubbable apply a good quality acrylic varnish.
After use cover the remaining plaster with plastic film and seal up the container, by doing so this material will keep for up 1 year.

Clean up and dilution is with water

We have more information about the product in this PDF download – https://www.caitwhitson.com/uploads/tinymce/Techniques%20for%20Impasto%20Plaster.pdf

TDS is here – https://www.caitwhitson.com/uploads/tinymce/TDS%20Impasto%20Plaster.pdf

and the MSDS – https://www.caitwhitson.com/uploads/tinymce/MSDS%20Impasto%20Plaster.pdf

More Example Finishes!

New Product Available – Modern Masters Metal Effects Reactive Paint Kits

Modern Masters Metal Effects paint is a high-tech acrylic paint with genuine metal particles mixed inside this. This unique formulation means that it develops patina or rust with time, giving an authentic aged look to any surface, indoors or outdoors!

These new kits have everything you need to transform a cupboard, a planter, or even a small wall into beautiful and natural looking oxidised metal finish. The kits contain a primer, the unique paint and a special activator to speed up the oxidation process! Using this activator, you can create your finishes by taking mere minutes to apply it! The kit also includes brushes and stirring sticks. It really is everything you need in one convenient box!

Click here if you’d like to read more about these kits or if you’ve got something around your home that you’d like to give a trendy, aged metal appearance to!

Modern Masters Metal Effect Paint

From the world leader in water-based aged metal finishes comes Modern Masters Metal Effect Paint. Whether it’s a small, DIY project, or a high-end decorative finish or large architectural specification this paint can do it all! We’ve seen it used on small outdoor planters in a garden, to extensive use throughout the treetop walkway in Kew Gardens!

The key to this authentic aged finish is the actual metallic particles that are kept within suspension by Modern Masters high-tech acrylic binder. When you apply the appropriate Patina Effect solution to the paint it acts on the particles, oxidising them and developing a genuine patina of rust. This finish can be applied on practically any solid, sound substrate and is suitable for both interior and exterior use.

The Rust Effect finish is by far our most popular finish and has been used extensively on large-scale projects. The finish you can achieve with the proper and careful use of the Rust Effect Patina looks incredibly close to that of Corten, or weathering steel, and costs a fraction of the price of weathering steel cladding!

The Copper and Bronze Effect paint are very popular for use on statuary, as the effect they give is very close to the genuine appearance of age on classic copper and bronze statues. The Green Effect and Blue effect patinas can be used interchangeably on the Copper and Bronze, allowing for the creation of the just the right type of oxidation on the surface to suit your project.

Below you can view a short video showing just how simple it is to create a gorgeous, heavily-weathered effect on a wall with just the application of Metal Effect products!

Click here to view our brief guide to the application of Modern Masters Metal Effects paints and click here to view our range of Modern Masters Metal Effects products.