Powertex students and beginners are sometimes surprised to find their creations can go outside but with Spring around the corner it's the perfect time. I'm answering a few questions in this article about using Powertex to create weatherproof, outdoor art, sculpture and so much more.

Using Powertex for outdoor projects

Powertex Universal Medium is weatherproof when cured which takes three weeks. Create your mixed media art ensuring all your pieces are coated well with Powertex Universal Medium (Fabric Hardener). To protect any colour you add to this, apply a layer or two of Easy Varnish that is also weatherproof. Note that submerging Powertex projects in water is not recommended, it is considered weatherproof not waterproof. For best results use 100% natural materials, such as cotton fabrics and natural fibres, wood, cork etc.

Powertex fairy houses fro outside by Kore Sage

Which Powertex products can I use for outside?

All the colours of Powertex Universal Medium (Fabric Hardener) are weatherproof in their natural cured state except Transparent. I personally recommend to my students that they don’t use Transparent for outdoor projects, even with a weatherproof varnish.

Use your Powertex with natural materials such as wire frames, wood, natural fabrics, fibres and metal embellishments. Powertex Universal Medium should be left to cure for three weeks before being put outside.

All the Powertex mediums can be used to create projects for outside. Coat any textures thoroughly with Powertex Universal Medium to ensure water resistance.

This moon gazing hare was made with Stone Art clay but was coated completely with Powertex Bronze over the textures. It was left several weeks to dry thoroughly and then dry brushed with a mix of Powercolor pigments and Easy Varnish.

Powertex Stone Art clay hare sculpture

Can I use Stone Art projects outside?

I have successfully used Stone Art clay in a small outdoor sculpture and it appears to have weathered the storm! A glass bottle creates a base and add layers of Stone Art clay to sculpt the hare. Wire pieces created the ear shapes. The Stone Art clay needs to dry thoroughly so there is no moisture inside the clay. This piece used a coat of Powertex medium to seal it before adding additional colour. Powercolor pigment mixed with Easy Varnish was used for dry brushing on the colour. The Varnish protects the colour pigments. Remember that Powertex or Easy Varnish should coat all the surfaces completely to provide a weatherproof finish. Additional coats of Easy Varnish can be added if you want to add extra weather protection.

How do I make a large Powertex sculpture for my garden?

The techniques are really the same whatever size your project. Think about the frame or base you need for your project and create that from natural materials such as chicken wire or wood. Chicken wire can be shaped for animal and figure sculptures if you have the right tools and safety equipment. Wooden bases or mdf can be constructed and coated with Powertex and then create your project as usual with wire, foil, plaster and fabric. Mannequins are a popular choice for large figures but stick to natural materials and you can use any size object for your foundation. Use the same principles, just think bigger!

Powertex wrapped bottles by Kore Sage

Can I use Bister for an outside project?

Bister pigments (spray and granules) have a very particular finish that’s hard to get with any other product. However, it’s not permanent or lightfast so my project could look bleached and colour can even run off when it gets wet. Your art will need to be protected. If you would like to try Bister on a project for outside try these tips:

Use a varnish that’s weatherproof with UV protection to protect your colours,

Use a spray-on varnish, a brush on liquid might reactivate the Bister and make it bleed,

Test a small area first to see how it reacts.

What projects can I create for outside?

Anything you create for inside you can also create for outside! Specific outdoor projects might include:

  • house numbers or name plates
  • decorated planters or flower pots
  • garden sculptures such as animals, birds or figures
  • wall art and sculpture
  • LED lanterns or tree decorations
  • birdhouses or feeders
  • patio or porch fairy houses

Your imagination really is the limit so whatever your style, have a try at making something for your outdoor space.

Download my free guides to Powertex if you’re new to this versatile medium. If you want to get some basic instruction I also have a beginners guide to Crafting with Powertex on Etsy. It’s a great way to learn the basic Powertex techniques and get started on your own project.

I’m a Powertex tutor in the south of England and get my supplies from Powertex UK.

Create garden art and sculpture with Powertex


Jinny · 19th March 2019 at 10:32 am

Fab blog and a lot of questions answered for those who have not tried Powertex. LOve your bottles x

Art table notes February 2021 - Kore Sage | Mixed Media Artist · 1st March 2021 at 6:46 pm

[…] art projects. If you’d like to make some weatherproof art or sculpture you can read more in the blog on how to create something […]

Comments are closed.