When specifying materials for washrooms, Solid Grade Laminate (SGL) and High-Pressure Laminate (HPL) are two of the most commonly used options. While both feature the same decorative laminate face, the panel composition differs significantly, affecting durability, water resistance, and suitability for different environments.
What is HPL?
At Dunhams Washrooms, our HPL specification consists of a 0.8mm decorative laminate bonded to a moisture-resistant substrate, typically 18mm thick. The edges are finished with 2mm ABS lipping, ensuring durability and a clean appearance.
While HPL is robust and impact-resistant, it is not completely waterproof. This makes it best suited for low to medium-use areas, where moisture exposure is minimal but a high-quality, durable finish is still required.
One key advantage of HPL is its thicker core, which provides a more premium aesthetic compared to 13mm SGL, which can sometimes appear more ‘utility’ or industrial. However, HPL is not recommended for showers or high-traffic, high-abuse environments, as moisture can eventually affect the core material over time.
What is SGL?
SGL (Solid Grade Laminate) is a 13mm thick, self-supporting laminate made entirely of resin-impregnated layers. While the laminate face is the same as HPL, the core is completely solid and waterproof, making it ideal for high-traffic, high-moisture environments such as:
- Public washrooms
- Leisure centres
- Educational facilities
- Changing rooms and showers
Because SGL is a solid core material, it offers superior resistance to moisture, impact, and heavy use, making it the best choice for demanding environments.
While SGL provides exceptional durability, its thinner 13mm profile may not offer the same aesthetic appeal as thicker HPL panels.
Which One Should You Choose?
The right choice depends on the environment and level of use:
- HPL – Best for low to medium-use areas, where moisture exposure is minimal but a high-quality, durable finish is required. The laminate face is the same as SGL, but the core is moisture-resistant rather than fully waterproof.
- SGL – The best choice for high-traffic, high-moisture, and high-impact areas, offering superior durability, full water resistance, and longevity.
If you’re unsure which material is right for your project, get in touch with our team for expert advice.
