29,99 €
Professional Polyester Resin 5kg
High-performance orthophthalic polyester resin in a 5 kg format, specifically designed for professional marine repairs and composite laminations. Thixotropic and pre-accelerated for easy application on vertical surfaces without sagging.
This Professional Polyester Resin (5 kg) is an orthophthalic-based solution, pre-accelerated and thixotropic, engineered for high-quality composite work.
Its specialized formulation ensures excellent fiber wetting, making it the perfect choice for boat maintenance, structural reinforcements, and custom fiberglass parts. The 5 kg format is ideal for medium-sized projects where professional-grade strength and ease of use are required.
✔ Zero Sagging → Thixotropic property ensures the resin stays on vertical surfaces.
✔ Rapid Wetting → Quickly penetrates glass fiber mats (CSM) and fabrics.
✔ Pre-accelerated → No need for extra accelerators; just add the catalyst.
✔ Weather Resistant → Durable finish designed to withstand marine and industrial environments.
✔ Easy Sanding → Once cured, it provides a stable base for finishing or painting.
Type: Orthophthalic polyester resin
Format: 5 kg (Bucket)
Properties: Thixotropic and pre-accelerated
Catalysis: MEKP (Liquid catalyst)
Color: Slightly amber (transparent after thin application)
🔹 Catalyzation
Requires the addition of 2% catalyst.
➡ For temperatures above 25°C, reduce to 1% (never go below this limit).
| Resin | Catalyst 2% |
| 1 kg | 20 g |
| 2 kg | 40 g |
| 5 kg | 100 g |
Mix thoroughly for 1 minute until fully homogenized.
👉 Pro Tip: Prepare only the amount needed for 15-20 minutes of work to avoid the “pot-life” expiration.
Can be colored with pigment pastes.
Recommended Dosage: 2.5%
| Resin | Pigment Paste |
| 1 kg | 25 g |
| 5 kg | 125 g |
Optimized for brush or roller application.
Perfect for manual layering with Mat or Stuoia (Woven Roving).
| Glass Mat | Weight/m² | Resin Needed | Laminate Thickness |
| 300 g/m² | 0.3 kg | 0.75 kg | 0.6 – 0.9 mm |
| 450 g/m² | 0.45 kg | 1.125 kg | 0.9 – 1.2 mm |
| 600 g/m² | 0.6 kg | 1.5 kg | 1.2 – 1.6 mm |
Boat Repairs: Fixes for hulls, decks, and internal structural parts.
Automotive: Repairing fiberglass fairings, bumpers, and spoilers.
DIY & Crafts: Creating durable molds and technical composite objects.
Bucket: 5 kg
Professional-grade laminates with high mechanical resistance and a perfect bond to existing fiberglass.
“A reliable company, professional-quality products, quantities suitable for DIY projects, prompt phone support, and professional technical advice at reasonable prices—finally, a go-to place! Well done 👍”
“An excellent salesperson who, above all, knows his stuff—he understands what he’s selling and clearly explains how to use it, providing all the necessary information. Plus, the products are high-quality and offer excellent value for money. The owner and his staff are kind and professional in a way that’s hard to find anywhere else these days.”
