Sika SikaBiresin AP077 Polyester Fairing Compound Above/Below Waterline - Quart

SikaBiresin® AP077 White Quart is a high-performance polyester filler and fairing compound specifically engineered for marine and boating applications. This versatile product delivers a smooth, workable paste with a fast-setting cure, perfect for accelerating repairs and finishing tasks on your vessel. Unlike traditional fillers, AP077 sands effortlessly and achieves a flawless, feathered edge finish. It can be easily applied using a squeegee, spatula, or flat tool, and once cured, it accepts virtually all types of marine-grade coatings and decorative films, ensuring a professional and durable finish for your boat.

Key Features

• Exceptional Adhesion: Bonds effectively to a wide range of substrates including fiberglass, SMC, FRP, epoxy, graphite, and Kevlar® composites.
• Very Quick Setting: Minimizes curing time, allowing for faster project completion.
• Minimal Shrinkage: Maintains dimensional stability during curing, reducing the risk of cracks and imperfections.

Marine Applications

SikaBiresin® AP077 White Quart is ideal for various marine repair and maintenance tasks, including:

1. Gel Coat Blister Repair: Efficiently fixes blisters in the gel coat, restoring the surface integrity of your boat.
2. Fiberglass Parts Repair: Repairs damaged fiberglass components with a durable and smooth finish.
3. Filling Cloth Imprint on FRP Panels: Smooths out cloth imprints on FRP panels for a seamless and professional appearance.

Its superior adhesive and bond strength make it suitable for use on aluminum, wood, and other common marine substrates, ensuring reliable and long-lasting repairs.

Advantages

• High Service Temperature: Performs reliably under varying temperature conditions typical in marine environments.
• Excellent Finishing and Machinability: Easily sanded and machined to achieve precise shapes and smooth surfaces.
• Versatile Finish Compatibility: Accepts virtually all types of marine-grade finishes, including paints and decorative films.
• Low Moisture Absorption: Suitable for both above and below-waterline applications, minimizing the risk of water-related damage.

Usage Requirements

BPO Hardener Required: For optimal performance, SikaBiresin® AP077 White Quart must be mixed with a compatible BPO hardener. Ensure accurate mixing ratios as specified in the Quick Guide to achieve the best results.

Quick Guide (pdf)
Owner's Manual (pdf)

Orders of physical products placed by 3 PM EST M-F typically ships the same day, if all requested items are in stock. Weekend orders will typically ship on Monday.

Shipping takes 2-7 days.

We currently ship to the Contiguous 48 States.

Life of Sailing merch is custom made for the customer after an order is placed. Total turnaround is typically 7-14 days from order to doorstep.