SikaBiresin AP014 Fast-Setting Polyester Filler – Formerly Adtech P-14 Marine Repair Putty

Adtech P-14 Ultra Filler / SikaBiresin Ultra Filler — Technical Product Description

Formerly sold as Adtech P-14 by Axson Technologies, this product is now part of the Sika Advanced Resins family. The formula remains unchanged. If you have used Adtech P-14 Ultra Filler in the past, you can order SikaBiresin Ultra Filler with full confidence in identical performance.

What Is P-14 Ultra Filler?

P-14 Ultra Filler is a two-component, BPO-catalyzed polyester filler and fairing compound designed for professional composite repair, mold fabrication, pattern making, production finishing, and marine fiberglass applications. It produces a smooth, creamy, thixotropic paste that spreads easily, holds its shape on vertical surfaces, and cures to a hard, machinable solid with no detectable shrinkage or sink.

Key Performance Properties

• Mix ratio: 100 parts paste to 2 parts BPO cream hardener, by weight or volume
• Work life @ 77°F: 5 ± 1 minutes
• Sand/file ready: 15–20 minutes at room temperature
• Shore D hardness after 1 hour: 86
• Water absorption (24-hr immersion): 0.16%
• Specific gravity: 1.58 g/cc
• Heat resistance: up to 350°F / 177°C
• Shelf life: 1 year in original unopened containers; store at 40°F–80°F

Adhesive Pull Strength (ASTM D-4541)

• Polyester filler substrate: 1,717 psi (12 MPa)
• Mahogany: 1,459 psi (10 MPa)
• Epoxy glass laminate: 753 psi (5 MPa)
• Aluminum: 2,940 psi (20 MPa)

Compatible Substrates

P-14 bonds effectively to fiberglass, SMC, RIM, BMC, graphite/carbon fiber, Kevlar composites, aluminum, steel, gray iron, copper, wood, plaster, urethane, and most patterns and models.

Topcoat Compatibility

Once cured and sanded, P-14 Ultra Filler accepts virtually all finishing systems without special surface preparation, including lacquer, enamel, polyurethane, epoxy, and gelcoat. It produces no bleed-out under decorative films or coatings.

Typical Applications

• Marine fiberglass repair and blister repair
• FRP and composite part repair
• Honeycomb panel edge filling
• Mold repair and modification (vacuum molds, urethane molds)
• Pattern and core box repair
• Void, porosity, and pinhole filling
• Cloth impression filling in pre-preg and composite panels
• Bonding loose details and inserts
• RIM/SMC/BMC surface filling
• Temporary fixtures and holding jigs

Application Instructions

1. Clean the repair area thoroughly. Remove all wax, oil, paint, and surface contaminants. Allow to dry completely — damp surfaces reduce adhesion.
2. Sand or abrade the area to create a bonding profile.
3. Stir the paste thoroughly with a spatula before dispensing.
4. Place paste and cream hardener on a clean, disposable mixing surface. Mix 100 parts paste to 2 parts BPO hardener. A golf ball-size amount of paste mixed with a 2-inch strip of hardener is a practical field guide.
5. Caution: Using too much hardener will cause gumminess in the cured filler. Follow the 100:2 ratio.
6. Apply with a squeegee, spatula, or putty knife. Work the material into the repair area and avoid trapping air.
7. After 15–20 minutes, sand, file, or scrape to final contour. Feather edges as needed.
8. Apply primer and topcoat per your finishing system requirements.

Chemical Resistance

Excellent (no attack): Benzene, gasoline, mineral spirits, methanol, distilled water. Good (slight attack): Acetic acid (5%), citric acid, hydrochloric acid (10%). Not recommended: Acetone, nitric acid (10%), sulfuric acid (10%), sodium hydroxide (5%).

Availability and Colors

Available in white resin. BPO cream hardener available in white, red, and black — hardener color serves as a mixing indicator and can influence final fill color.

Marine Repair Filler for Florida Boatyards, Fiberglass Shops, and Composite Repair

SikaBiresin polyester fillers are commonly used by boatyards, fiberglass repair shops, composite technicians, mold builders, and marine service companies for filling, fairing, sanding, and repair work. For customers in Florida, the Caribbean, and coastal marine markets, these fillers are useful for fiberglass boat repair, FRP panel repair, mold repair, gelcoat repair preparation, and composite surface finishing.

SikaBiresin Ultra Filler is the direct successor to Adtech P-14 Ultra Filler. Fiberglass Florida stocks this product for immediate fulfillment. Questions? Call us at 321-639-3046.