FIBERLAM Plus 1 Gallon Polyester Laminating Resin - Extended Tack Time

Our review of FIBERLAM Plus 1 Gallon Polyester Laminating Resin finds it best suited to builders and repairers who need a reliable, marine-grade laminating resin with a predictable working window. This product stands out because each gallon ships with a 2oz MEKP hardener and pipettes, making it ready to mix for hand layups or spray use; the single biggest reason to buy is the combination of professional-grade performance and the convenience of included catalyst and measuring tools. The review highlights cure behavior, tack time, and where this resin fits into common fiberglass workflows.

Key Features

• Marine grade quality: This is a Grade A ortho-type polyester resin used by marine and RV manufacturers for durable laminations and repairs.
• Included catalyst: Each gallon includes a 2oz bottle of MEKP and pipettes so users can mix accurate catalyst ratios without hunting for supplies.
• Extended tack time: The resin stays tacky longer, which helps when stacking layers of mat, biaxial cloth or cloth overlaps during multi-layer layups.
• Tack free cure: The formula cures tack free in 24-36 hours under normal conditions without added wax, simplifying post-cure handling.
• Low viscosity and wetting: Low viscosity promotes fast impregnation of CSM, cloth and core materials and makes hand layups or spray application easier.
• Wide compatibility: Works with fiberglass mat, biaxial cloth, coring materials and gelcoat for repairs and new construction.

Who It's For

This resin is aimed at DIY boat owners, small commercial fabricators, and hobby builders repairing boats, surfboards, RV panels or auto body parts who need a marine-grade polyester resin with the convenience of an included MEKP bottle. Its extended tack time and good wetting make it useful for layered laminations and larger repairs where repositioning or stacking is common.

Those who need ultra-fast full cure in cold conditions or require a specialized epoxy system for structural bonding or potting should look elsewhere; temperature and MEKP amount directly affect cure time and this ortho polyester resin performs best at or above room temperature for predictable 24-36 hour tack-free cures.

Pros & Cons

Pros

• Marine-grade polyester quality suitable for boat and RV repairs and production.
• Comes ready to use with a 2oz MEKP catalyst and pipettes for accurate measuring.
• Low viscosity and excellent wetting speed resin penetration into CSM and cloth.
• Extended tack time helps with multi-layer layups and vertical laminations.

Cons

• Cure time varies with temperature and catalyst amount; in cool conditions it can take longer than the 24-36 hour window to fully cure.
• Not a substitute for epoxy in applications that require epoxy-level adhesion or flexibility.

Specifications

Product	Polyester fiberglass laminating resin (FIBERLAM Plus)
Volume	1 gallon (each unit includes 1x 2oz MEKP)
Hardener	MEKP catalyst 2oz per gallon; pipettes included
Type	Ortho-type polyester resin, low viscosity
Cure time	Tack free in 24-36 hrs at ~72F; may cure faster or slower with temperature or MEKP variation
Applications	Marine, RV, auto body, FRP parts, surfboards, general laminating

Our Verdict

FIBERLAM Plus is a practical, marine-grade polyester laminating resin that offers good value for repair shops and serious DIYers because it pairs professional performance with useful accessories like MEKP and pipettes. It is especially valuable when working multiple layers or larger panels due to its extended tack time and low viscosity, but buyers should account for temperature-dependent cure behavior when planning projects.

Frequently Asked Questions

How much MEKP is included?
Each gallon ships with one 2oz bottle of MEKP catalyst and pipettes for measuring; order multiple gallons and you receive one 2oz bottle per gallon.

How long until the resin is fully cured?
Under typical conditions around 72F it becomes tack free in 24-36 hours and can reach full cure; higher temperatures and more catalyst speed the cure, while lower temperatures slow it.

Can it be used with gelcoat and core materials?
Yes, the resin bonds well with gelcoat and is compatible with common cores and fiberglass reinforcements including CSM and biaxial cloth.