---
product_id: 422912051
title: "SP201 Acrylic Polymer - 500g (500ml) - Casting Plaster Strengthener and Water Proofer"
brand: "trustleaf"
price: "A$65"
currency: AUD
in_stock: true
reviews_count: 4
category: "Trustleaf"
url: https://www.desertcart.com.au/products/422912051-sp201-acrylic-polymer-500g-500ml-casting-plaster-strengthener-and-water
store_origin: AU
region: Australia
---

# Enhances color vibrancy with pigment compatibility Waterproofs casts for outdoor durability Increases plaster density by up to 30% SP201 Acrylic Polymer - 500g (500ml) - Casting Plaster Strengthener and Water Proofer

**Brand:** trustleaf
**Price:** A$65
**Availability:** ✅ In Stock

## Summary

> 💥 Elevate your plaster game—stronger, wetter, and more vibrant than ever!

## Quick Answers

- **What is this?** SP201 Acrylic Polymer - 500g (500ml) - Casting Plaster Strengthener and Water Proofer by trustleaf
- **How much does it cost?** A$65 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.com.au](https://www.desertcart.com.au/products/422912051-sp201-acrylic-polymer-500g-500ml-casting-plaster-strengthener-and-water)

## Best For

- trustleaf enthusiasts

## Why This Product

- Trusted trustleaf brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Easy Integration:** Seamlessly mixes with plaster for smooth, professional finishes
- • **Low-Fume, Safe Use:** Ammonia-free formula perfect for enclosed studios and workshops
- • **Unmatched Strength Boost:** Transforms fragile plaster into chip-resistant masterpieces
- • **Vibrant Color Enhancement:** Amplifies pigments for eye-catching, lasting hues
- • **Waterproof Seal Technology:** Protects your creations from moisture and weather damage

## Overview

SP201 Acrylic Polymer is a 500g high-performance additive that strengthens plaster casts by increasing density and surface hardness, while providing waterproofing and enhanced color vibrancy. Its low-fume, ammonia-free formula makes it ideal for indoor use, and it easily integrates into standard plaster mixes to deliver durable, chip-resistant, and visually striking results suitable for artistic and industrial applications.

## Description

SP201 Acrylic Polymer is a high-performance additive used to enhance the properties of plaster casts. When mixed with plaster, SP201 improves flexibility, adherence, and overall durability, making it an excellent choice for both artistic and industrial applications. This acrylic polymer enhances the surface hardness and provides resistance to chipping and cracking, prolonging the lifespan of the plaster casts.Additionally, SP201 Acrylic Polymer increases water resistance, making the casts suitable for outdoor or high-moisture environments. Its compatibility with various pigments allows for vibrant coloration without compromising the integrity of the plaster. Easy to incorporate into standard plaster mixing processes, SP201 ensures a consistent and smooth finish ideal for detailed work. Users benefit from its versatility, allowing for creative and functional uses in sculptures, architectural elements, and decorative pieces.Instructions.The product needs to be diluted, typically 1 part polymer to 4 parts water as a strengthener, and 1 part polymer to 5 parts water to give casts a water resistance. How much you require depends on use but as a rough guide a 250ml bottle would treat between 2kg of plaster. *Note when using the polymer less water is required as it lowers the surface tension enabling a denser cast. It is possible when striving for that perfect cast (such as when making chess pieces) to double or even treble the quantities used.

Review: Used for artisinal vases - Acrylic polymer I use to make vases
Review: Used as a Heavy Waterproof Sealant on Filler - I actually used this on filler around my window, where the plaster had come away from being damp. It worked a treat and here we are a year later and filler and paint it still looks as good as new and is very strong and sound.

## Features

- STRENGTH - Increases the density and strengthens the casting
- SEALS - Makes models Water Resistant / Waterproof
- VIBRANT - Enhances any colours / dyes used within the model
- LOW FUME - Ammonia free - Suitable for use in enclosed spaces

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B09BQMW362 |
| Best Sellers Rank | 163,822 in Home & Kitchen ( See Top 100 in Home & Kitchen ) 490 in Sculpting Moulding & Casting |
| Brand | Trustleaf |
| Colour | Clear |
| Customer Reviews | 4.5 4.5 out of 5 stars (27) |
| Date First Available | 15 July 2014 |
| Item Weight | 500 g |
| Model Number | TL-SP201-500 |
| Product Dimensions | 22 x 21 x 8 cm; 500 g |

## Images

![SP201 Acrylic Polymer - 500g (500ml) - Casting Plaster Strengthener and Water Proofer - Image 1](https://m.media-amazon.com/images/I/21-Z6yRKHIL.jpg)
![SP201 Acrylic Polymer - 500g (500ml) - Casting Plaster Strengthener and Water Proofer - Image 2](https://m.media-amazon.com/images/I/31bO0CNl0rL.jpg)

## Available Options

This product comes in different **Size** options.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Used for artisinal vases
*by D***X on 8 February 2026*

Acrylic polymer I use to make vases

### ⭐⭐⭐⭐⭐ Used as a Heavy Waterproof Sealant on Filler
*by A***P on 23 November 2025*

I actually used this on filler around my window, where the plaster had come away from being damp. It worked a treat and here we are a year later and filler and paint it still looks as good as new and is very strong and sound.

### ⭐⭐⭐⭐ Does the job
*by A***R on 8 July 2024*

Used to strengthen plaster crafts seems to make it a bit stronger.

## Frequently Bought Together

- SP201 Acrylic Polymer - Casting Plaster Strengthener and Water Proofer (500g)
- Trustleaf 250ml Liquid Latex Dipping Rubber for Mould Making/Casting/SFX... (250ml)
- Liquid Latex - 5 litres - Mould Making/Prosthetic Costume/SFX/Skin Safe

---

## Why Shop on Desertcart?

- 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016
- 🌍 **Shop Globally** — Access 737+ million products across 21 categories
- 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price
- 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members)
- 🔒 **Secure Payments** — Trusted payment options with buyer protection
- ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews

**Shop now:** [https://www.desertcart.com.au/products/422912051-sp201-acrylic-polymer-500g-500ml-casting-plaster-strengthener-and-water](https://www.desertcart.com.au/products/422912051-sp201-acrylic-polymer-500g-500ml-casting-plaster-strengthener-and-water)

---

*Product available on Desertcart Australia*
*Store origin: AU*
*Last updated: 2026-03-07*