Free shipping on orders over £29,85 
Shipping Tracking! 
Google
Facebook← Back to What plaster should be applied on thixotropic epoxy resin?
Applying regular gypsum plaster over a thixotropic epoxy resin surface is a common consideration in refurbishment and repair projects. Ensuring proper preparation is essential for a reliable and lasting result.
Why Direct Application is Risky
Standard gypsum plaster typically does not adhere well to smooth or non-porous surfaces such as cured epoxy resin. Attempting a direct application can result in poor bonding, which may lead to flaking or delamination of the plaster over time. This is especially true with thixotropic epoxy resins, which are designed to resist sagging and create robust, sealed surfaces.
Preparation and Priming for a Secure Bond
To promote adhesion, it’s crucial to prime the epoxy resin before plastering. Begin by ensuring the resin surface is fully cured and clean. Lightly sanding the area can help create a slightly rougher texture, giving the primer better grip. Follow this by applying a suitable primer like Epoxyprimer. This product is formulated to bridge between non-absorbent and absorbent layers, offering a strong base for subsequent plaster coats. Allow the primer to cure fully, as recommended by the manufacturer, before proceeding with gypsum plaster application.
When This Matters Most
Correct preparation is particularly important for surfaces subject to impact, moisture changes, or temperature fluctuations, such as bathroom or kitchen walls. In these settings, a reliable bond between resin and plaster is vital for avoiding cracks and maintain a durable finish.
Related products
Related guides
Proper surfacing methods ensure a lasting finish when combining gypsum plaster with thixotropic epoxy resin. For comprehensive advice on resin-backed surfaces and finishes, revisit our main guide on what plaster should be applied on thixotropic epoxy resin.