Polyester Fairing Compound is a fibrous filler for structural repairs, bonding, and part fabrication. This smooth, white thixotropic paste system is great for rebuilding broken, void, or damaged areas in composites and other materials. Unlike other body fillers, #4100 Polyester Fairing Compound exhibits low shrinkage, high impact strength, and excellent temperature and chemical resistance. It is easy to mix, has excellent adhesive qualities, low moisture absorption, and can be applied in varying degrees of thickness. Use this versatile Polyester Fairing Compound to permanently repair damage on a boat or to smooth and shape the external surface of a part.

Using this fairing compound is simple. After prepping the surface and mixing #4100 with a BPO Hardener, the fiber-filled paste can be applied and smoothed with a squeegee or spreader. To achieve a smooth, cosmetic surface after using #4100 Polyester Fairing Compound, use #4116 Lightweight Polyester Cosmetic Filler. Compatible with Epoxy Resin, Polyester Resin, and Vinyl Ester Resin.
Requires BPO Hardener - 100R:2H (parts by weight).

To get the best mechanical bond, it is recommended to use #4100 Polyester Fairing Compound on rough or fibrous surfaces. Bonding applications include: composite repair, marine fabrication, FRP composites to FRP, metal inserts to fiberglass, metal to concrete, detail blocks to FRP, wood to wood bonding, and metal to metal bonding.

4100/264-A Kit contains 1 Quart Polyester Fairing Compound & 1 oz tube of White BPO Hardener.
4100/264-B Kit contains 1 Gallon Polyester Fairing Compound & 4 oz tube of White BPO Hardener.  

#4114 Marine Epoxy Fairing Compound is a smooth, creamy paste system for fairing large surface imperfections on fiberglass, wood, aluminum, and steel. This tough Marine Epoxy Fairing Compound is UV stable, weather resistant, and can be used above or below the waterline. Use Marine Epoxy Fairing Compound for fairing or surface repair on wooden marine vessels, wood cabinets, fiberglass structures, architectural items, and much more.

When mixed at an easy 1:1 volumetric ratio, this creamy paste can be spread easily onto damaged or rough areas to create a smooth, cosmetic surface. This color coded kit (white resin/brown hardener) indicates when a complete mix has been achieved. Apply this compound up to 1" thick with very little shrinking or sagging during cure. When cured, Marine Epoxy Fairing Compound can easily be sanded and can accept most types of primers and paints.  

Lightweight Polyester Cosmetic Filler is a versatile, two-part, creamy paste designed to fill, seal, repair, and finish surface damage on composite materials. This filler demonstrates excellent physical and cosmetic properties. When applied, this thixotropic paste quickly forms an exceptionally rigid and strong surface which can easily be sanded to a feather edge. #4116 Lightweight Polyester Cosmetic Filler will not shrink, sag, or pin-hole after curing, and it can accept virtually any paint or finish without any special surface preparation.
Requires BPO Hardener – 100R:2H (parts by weight).

#4116 Lightweight Polyester Cosmetic Filler works extremely well with #4100 Polyester Fairing Compound. For applications that require a structural repair, use #4100 Polyester Fairing Compound, a fibrous filler, to rebuild broken, void, or damaged areas, then apply this #4116 Lightweight Polyester Cosmetic Filler over the repair to achieve a smooth, cosmetic surface.

Apply catalyzed #4116 Lightweight Polyester Cosmetic Filler with a spatula or putty knife. After 15-20 minutes, this filler may be sanded to final finish. Typical applications of #4116 Lightweight Polyester Cosmetic Filler include: composites repairs, filling composites surface porosity, vacuum mold repair, urethane mold repair, crack, dent, and crevice repair, urethane part repair, renewing worn surfaces, and much more.

4116/264-A Kit contains 1 Quart Lightweight Polyester Cosmetic Filler & 1 oz tube of White BPO Hardener.

• Resin Color – White
• Working Time (100 gram mass) – 5 ± 1 minutes
• Finish Schedule (100 gram mass) – 15 minutes
• Hardness after 1 hour – 86 Shore D

 

#4115 Carvable Low Density Polyester Filler is a brown, creamy, non-sag paste used to fill or repair damaged areas in composite materials and wood. Its quick cure time and finishing schedule allow for incredibly fast repairs.
Requires BPO Hardener – 100R:2H (parts by weight).

This paste mixes easily and when fully cured can be finished to a feather edge by sanding, carving, machining or scraping. Use Carveable Low Density Polyester Filler for engineering changes, fillets, tooling applications, and as a quick patch for all types of wood.

4115/264-A Kit contains 1 Quart Carveable Low Density Polyester Filler & 1 oz tube of White BPO Hardener.

• Resin Color (use with White BPO Hardener) – Brown
• Working Time (100 gram mass) – 4-6 minutes
• Finish Schedule (100 gram mass) – 15-20 minutes
• Cured Hardness – 60 Shore D

 

Extremely lightweight epoxy filler used to smooth the surface of repaired parts, fill the weave on moldless or male molded parts, and shape fillets in corners and joints. This epoxy filler provides superior adhesion to most surfaces including SMC, and exhibits no shrinkage. It spreads smoothly with few sags, even upside down! Final contours are easily sanded with standard shop tools.  

White BPO, Red BPO, and Black BPO are cream hardeners for use with the following Fibre Glast polyester systems: #4100 Polyester Fairing Compound, #4115 Carveable Low Density Polyester Filler, #4116 Lightweight Polyester Cosmetic Filler, #4105 Polyester Low Density Plank Filler, and #4106 Polyester Plank Patch Paste.

• Available in 2 sizes - 1oz and 4oz
• Available in 3 colors – White, Red, and Black