EPD-IES-0024026:002

Pre-painted steel coils Solcoat®

The product analyzed in this study consists of steel coils with Solcoat® organic coatings, based on polyester, polyurethane, PUPA, PVDF, and PEPA. These coils are intended for applications in construction (façades and roofs), profile manufacturing, household appliance production, and other industrial sectors that require a material with high corrosion resistance, durability, and an attractive aesthetic finish.

Solcoat® is a prepainted product that ensures optimal quality by undergoing a series of tests in accordance with the EN 13523 standard. Solcoat® prepainted steel products combine base steel with Z and AZ metallic coatings, in compliance with EN 10169, with coating weights ranging from 70 to 275 g/m², and organic coatings with thicknesses ranging from 15 μm to 70 μm on the top side, and 5 μm to 25 μm on the back side.

Depending on the type and thickness of the coating and the intended use, Solcoat® organic coated steel coils provide corrosion resistance and durability.

Registration number	EPD-IES-0024026:002
Status	Valid
Version date	2025-07-24
Validity date	2030-06-19
PCR	2019:14 Construction products (EN 15804+A2) (version 1.3.4) 1.3.4
Standards conformance	ISO 14025:2006, EN 15804:2012+A2:2019/AC:2021
Geographical scope	Europe, Spain
LCA Practitioners	boris@dcycle.io, COATED SOLUTIONS Francisco Manuel Rodriguez Gomez, franciscorodriguez@coatedsolutions.com, COATED SOLUTIONS

Company name	COATED SOLUTIONS
Country	Spain
Contact	franciscorodriguez@coatedsolutions.com
Website	https://www.coatedsolutions.com/

Solcoat® organic coating products have different finishes depending on the type of paint applied. Below are the main products:

• Polyester (PE): This type of paint is based on saturated polyester resins, formed by polyols (typically glycols such as ethylene glycol or propylene glycol) and dicarboxylic acids (such as isophthalic acid or terephthalic acid). These resins are combined with pigments, which are typically used to enhance weather resistance and prevent fading. The formulation also includes specific additives such as UV stabilizers and antioxidants, as well as curing agents that react with the polyester resin to form a strong, durable film. This is achieved through oven curing at temperatures between 200–250 °C (typically using amines or melamineformaldehyde resins).

• Polyurethane (PU): Based on polyurethane resin, which is formed through the reaction of polyols with isocyanates. Additionally, it includes metallic pigments (finely ground aluminum particles that reflect light, giving the characteristic metallic finish), additives (leveling agents to ensure a uniform application and defoamers), and solvents to adjust viscosity.

• Polyester-Polyamide (PEPA): Based on polyester resin, formed by polyols (typically glycols such as ethylene glycol or propylene glycol) and dicarboxylic acids (such as isophthalic acid or terephthalic acid), with a polyamide modifier that enhances abrasion resistance and durability.It also includes curing agents, pigments, and additives. This type of resin provides good adhesion, moderate chemical resistance, and durability in outdoor environments, as it does not degrade easily under sunlight.

• Polyurethane-Polyamide (PUPA): It is a textured polyurethane coating, produced through the reaction of polyols with isocyanates, creating a crosslinked structure that enhances durability and abrasion resistance. It is modified with polyamide, which provides greater hardness and chemical resistance. Additionally, it includes solvents (esters and ketones) to improve viscosity, texture additives, and color pigments (titanium dioxide).

• Polyvinylidene Fluoride (PVDF): It is a fluorocarbon polymer that forms extremely stable bonds, resistant to heat and oxidation. It is combined with additives (UV stabilizers, leveling agents) and pigments, typically inorganic pigments such as titanium dioxide (TiO₂). PVDF coatings are extremely resistant to UV radiation and temperature changes, and they offer long-lasting protection, as PVDF resists corrosion and wear.