What is the best exterior wood filler epoxy? What is the best wood filler for exterior use? What can I use to patch exterior wood? What should I look for when selecting the best exterior wood filler epoxy? Is epoxy wood filler waterproof?
The best exterior wood filler epoxy plays a key role in the repair and restoration of wood cracks, holes, and rots. By replacing damaged wood, wood fillers act like wood (sometimes better than wood) to give a surface that can be drilled, painted, cut, or sanded.
In the end, your woodworking project is not only flawless without wood defects but is strong and durable enough to withstand scratches, solvents, abrasion, pressure, and impact.
However, finding the best exterior wood filler epoxy can be confusing amidst closely related products such as glues and resins. This article delves into dozens of reviews on the web plus sample performance results in our SmartKitchenLine Hub to bring you refined, well-researched Top 10 picks of the best exterior wood filler epoxy.
BEST EXTERIOR WOOD FILLER EPOXY (Reviews)
1 . PC Products – 163337 PC-Woody Wood Repair Epoxy Paste, Two-Part 12 oz in Two Cans, Tan 16333 – OVERALL BEST EXTERIOR WOOD FILLER EPOXY
Highlighted Pros
✅For outdoor and indoor use
✅Super Durable
✅High Tensile Strength
✅No-sag and no drip
✅Ample work time
✅Resistant to mildew dry rot
Cons
X Problems when mixing small teaspoon size quantities
PC Products – 163337 is the best exterior wood filler epoxy PC Products – 163337 is superbly durable exhibiting outstanding resistance to mildew dry rot, UV light, fresh and marine water. On top of this durability is the high 850 pounds_per_square_inch tensile strength which produces tough wood filling.
PC Products – 163337 is a two-part epoxy paste with a hardener and resin to produce hardy results.
PC Products – 163337 is perfect for both indoor and outdoor applications because of its wide application temperature range of 35 to 115 degrees F and a service temperature range of -20 to 200 degrees F.
PC Products – 163337 exhibits significant tack which facilitates vertical applications by reducing unsightly sags and drips which form during the hardening process.
PC Products – 163337 provides work time of 30 to 40 minutes (at 70 degrees F). This time is sufficient to allow small adjustments before full cure and also quick enough not to overly delay your wood filling project.
2 . 3M High Strength Large Hole Repair Kit with 12 fl. oz Compound, Self-Adhesive Back Plate, Putty Knife, and Sanding Pad – BEST EXTERIOR WOOD FILLER EPOXY FOR SMALL PROJECTS
Highlighted Pros
✅For outdoor and indoor use
✅Super storing adhesion
✅Easy to use
✅Superfast 5X action
✅Sufficient holes smaller than 5”
✅Easy to sand
✅No shrinkage, cracking, or sagging
Cons
X Only for holes up to 5”
3M High Strength is the best exterior wood filler epoxy for small projects. It exhibits super strong adhesion on the wood surface to excellently repair damaged wood. It employs a fiber-reinforced spackling compound unique to other exterior wood fillers to showcase outstanding performance.
It’s an easy-to-use wood filler with a handy repair plate for a custom fit to allow you to perform any DIY project to the last detail. The filling process involves a 3 step (insert, secure, and repair) process.
3M High Strength flexes and adheres strongly for professional-grade repairs regardless of your woodworking skill level.
3M High Strength sufficiently fills holes in wood up to 5 inches in diameter which is significant coverage in the common sizes of holes you are likely to encounter in woodworking projects. However, this diameter though sufficient may be a limitation occasionally and that’s why our research provides an alternate runner-up best exterior wood filler epoxy.
3M High Strength is a fast action wood filler with a set and cures time that is 5X (500%) faster than normal wood fillers.
3M High Strength shows no cracking, shrinkage, and sagging making it ideal to use on both vertical and horizontal planes such as ceilings and tall walls.
3 . Sharpie Permanent Markers, Ultra Fine Point 3.25 Ounce
Highlighted Pros
✅For interior and exterior use
✅Easy staining
✅Durable
✅Solvent Free
✅Resists Cracking
✅Resists shrinkage
Cons
X Not for large wood filling projects
Sharpie E887Q is an easy-to-use wood filler epoxy for both interior and exterior use. Sharpie E887Q works with any stain giving your wood repair patch an amazing and custom look. Choose a stain color that matches the surrounding area and completely mask out the patch. Sharpie E887Q is extremely durable, excellently passing the crack and shrink tests.
The main composition is the real fibers which offer premium sanding, painting, and staining results. Apply the wood filler and use high-speed sanders for the best results.
Sharpie E887Q is 100% waterproof and solvent-free to keep your wood filling project away from common solvents. This feature makes Sharpie E887Q easy to clean with normal soap and water.
4 . Elmer’s E892 Stainable Wood Filler 32 oz
Highlighted Pros
✅For interior and exterior use
✅Easy staining
✅Durable
✅Solvent Free
✅Resists Cracking
✅Resists shrinkage
Cons
X Only for medium size wood filling projects
Elmer’s E892 is the 32 oz version of Sharpie E887Q 3.25 Ounce.
Elmer’s E892 is an excellent choice for medium size wood filling projects.
Elmer’s E892 is an easy-to-use wood filler epoxy for both interior and exterior use. Elmer’s E892 works with any stain giving your wood repair patch an amazing and custom look. Choose a stain color that matches the surrounding area and completely mask out the patch. Elmer’s E892 is extremely durable, excellently passing the crack and shrink tests.
The main composition is the real fibers which offer premium sanding, painting, and staining results. Apply the wood filler and use high-speed sanders for the best results.
Elmer’s E892 is 100% waterproof and solvent-free to keep your wood-filling project away from common solvents. This feature makes Sharpie E887Q easy to clean with normal soap and water.
5 . Bondo All-Purpose Putty, Designed for Interior and Exterior Home Use, Paintable, Permanent, Non-Shrinking, 1.9 lb., 1-Quart
Highlighted Pros
✅For interior and exterior use
✅Bonds to wood, metal, glass, plastic, concrete, and more
✅Fast Action
✅Fully and easily paintable and stainable
✅100% water resistant
Cons
X Only for small scratches and holes
Bondo All-Purpose is a two-part filler that strongly bonds to wooden surfaces as well as metal, glass, plastic, concrete and more surfaces. Bondo All-Purpose also produces non-shrink results to give your wood filling stunning toughness.
Bondo All-Purpose is 100% waterproof to resist solvent and water entry which ruin wood filling projects by causing wood cracks, rit, and swelling.
Bondo All-Purpose is a fast action wood filler epoxy curing super fast and is ready for sanding within 15 minutes of application.
Bondo All-Purpose is fully and easily paintable and stainable. However, even in absence of color Bondo All-Purpose cures to a light gray tint which perfectly blends with many external furniture, walls, and more.
Bondo All-Purpose is a thick pour formulation to perfectly fill wood holes and cracks and rid of air pockets which otherwise increase the risk of forming many bubbles.
6 . FamoWood 40022126 Latex Wood Filler – Pint, Natural
Highlighted Pros
✅For interior and exterior use
✅Fast Action
✅0% shrinking or crumbling
✅Low odor
✅Solvent Free
✅Can be sanded, drilled, planed, stained, and painted.
Cons
X Hard to open lid design. Exercise extreme caution
FamoWood 40022126 is a fast action wood filler epoxy that Dries in 15 minutes to allow same-day repairs to your wood surface.
Famowood 40022126 is epoxy-grade durable with 0% shrinking or crumbling. In the end, you get tough and steady wood fillers which last a long time regardless of the weather.
Famowood 40022126 is a low odor wood filler allowing you to repair wood in outdoor spaces near balconies or eatery areas of spaces meant for children or the old.
Famowood 40022126 is solvent-free and resists damage by water and chemicals. This feature also eases the cleaning process with soap and water.
FamoWood 40022126 is easily worked and can be sanded, drilled, planed, stained, and painted.
7 . DAP 211442 Plastic Latex Based Wood Filler, 16 Oz, Natural, 2-6 Hr, 1 Pack
Highlighted Pros
✅For interior and exterior use
✅Low odor
✅100% waterproof
✅Strong nail and screw anchorage
✅300% stronger than the actual wood
Cons
X Exterior applications MUST be stained or painted
DAP 211442 has a Low odor formula to allow you to work in your basement workshop. DAP 211442 neither shrinks nor cracks to give lifelong durability to your epoxy filling project. DAP 211442 is 100% waterproof and is thus easy to clean with only water. DAP 211442 hardens like wood to bring a plastic surface that is tough and strong to anchor strong nails and screws. DAP 211442 is 300% stronger than the actual wood surface to accurately replace and repair your wood cracks and holes.
8 . NADAMOO Floor and Furniture Repair Kit 18 Colors with Wood Filler Putty, Wood Filler Stain Touch Up Scratch Hole Repair for Wall Hardwood Laminate Floor Wooden Table Door Cabinet – BEST COLORED EXTERIOR WOOD FILLER EPOXY
Highlighted Pros
✅For interior and exterior use
✅Easy to use
✅Paintable
✅Stainable
✅Potential for colored wood filler out of the box
✅Included handy accessories
Cons
X Only fit for minor and small scale repairs
NADAMOO Wood Filler Kit is an easy-to-use wood filler to allow you to repair cracks regardless of your skill level. NADAMOO Wood Filler Kit is extremely versatile and can be used on external doors, window seals, garden benches, and exterior wood decks.
NADAMOO Wood Filler Kit is available in the following colors: White, Ivory, Wood White, Cedar, Red Oak, Red Sandalwood, Dalbergia, Black Walnut, Teak, Mahogany, Gray, and Black.
NADAMOO Wood Filler Kit comes with handy accessories which include the following to make your wood filling easy and easy out of the box
Brush
Spatula
Sandpaper
Mixing Jar
9 . Bondo Home Fiberglass Resin, Designed for Interior and Exterior Home Use, 100% Waterproof, Strong, Durable, 0.9 Gallon – BEST EXTERIOR WOOD FILLER EPOXY RESIN
Highlighted Pros
✅For interior and exterior use
✅100% waterproof
✅Extensively versatile
✅Cures in 2 hours
✅For small to large holes
✅Compatible with most paints and gel coats
Cons
X All wood filler epoxy resin requires accurate mixing
Bondo Fiberglass is a polyester epoxy resin for interior and exterior wood repairs and replacements.
Bondo Fiberglass is 100% waterproof and acts as an excellent sealant for outdoor tubs, showers, sinks, and furniture with partly or full wood surfaces. Bondo Fiberglass is extensively versatile not only bonding to wood but also bonding to concrete, fiberglass, and metal.
Bondo Fiberglass cures in 2 hours which is quick enough not to delay your wood filling project and adequate enough to allow repositioning of wood pieces.
Bondo Fiberglass is a two-part epoxy resin that includes Bondo Liquid Hardener for easy and accurate mixing.
Bondo Fiberglass is the best wood filler for large holes or cracks and other large voids. Bondo Fiberglass is also excellent for small holes and cracks. Also, Bondo Fiberglass is compatible with most paints and gel coats to give your wood filler project a great aesthetic feel outside of its translucent light brown color
10 . Minwax 42853000 Stainable Wood Filler, 16-Ounce
Highlighted Pros
✅For outdoor and indoor use
✅Easy to maintain
✅Resists cracking
✅Resists shrinkage
✅Resists scratching
✅Fast drying
Cons
X Not perfectly stainable
Minwax 42853000 is fast drying to deliver firm repairs in little time to enable the continuity of your woodworking project.
Minwax 42853000 exhibits epoxy-grade durability with outstanding resistance to cracks, scratches, and shrinkage hence your wood repair remains intact and tough for a long time.
Minwax 42853000 consists of a latex formulation which is an excellent composition in the ease of maintenance. With only soap and water, you get your wood filler surface washed to perfection.
Minwax 42853000 is NOT an excellent choice when you want to paint or stain your wood repairs. Although Minwax 42853000 supports both oil-based and water-based stains, the staining results produce lumps and yellowing which make the stinging process difficult.
SELECTING THE BEST EXTERIOR WOOD FILLER EPOXY (Buying Guide)
These factors were well filtered based on research and testing to carefully select which features you should pay attention to when selecting the best exterior wood filler epoxy.
1 . EXTERIOR USE COMPATIBILITY
Not all wood fillers are built for outdoor use. For the subject today, our perfect wood filler should be fit for outdoor use. It is hugely advantageous when the choice fits for indoor and outdoor use which extends to the versatility of the wood filler.
Wood fillers for both indoor and outdoor use enable you to repair wood projects which can be moved into indoor spaces or projects which occupy both indoor and outdoor spaces. Talk of killing several birds with just a single stone.
2 . EASE OF USE
Wood fillers can be confusing especially for beginners who are not familiar with complex mixing ratios. Having an easy-to-use wood filler allows you to work hastily while achieving professional-grade results.
Even for skilled woodworking veterans, ease of use is crucial in time management and reducing the risk for error which otherwise ruins craftsmanship.
3 . SPEED OF ACTION
How fast does wood filler dry? Depending on the time that you have for your woodworking project and the kind of use you subject to your wooden surface, you may require a rapid-action wood filler.
For example, if the wood filling is only just a small portion of a wider woodworking project and you use the wooden furniture you are repairing frequently, it is beneficial to go for a rapid-action epoxy that dries fast to make your furniture available for use.
4 . DURABILITY
The best exterior wood filler epoxy should exhibit the following features to effectively mask out future damage from weather and human use:
- Scratch and abrasion resistance
- Water and solvent resistance
- Pressure and Impact resistance
All these allow your wood filler to remain intact and show strong adhesion.
5 . EPOXY CAPACITY
Depending on the scale of your wood filling project, you will need a specific wood filler epoxy. For example, some products like the 3M High Strength are only fit to holes up to 5”. Also, some small-capacity wood fillers like the Sharpie E887Q and Elmer’s E892 are only fit for small to medium scale wood filling projects.
FREQUENTLY ASKED QUESTIONS
Is epoxy wood filler waterproof?
The best exterior wood filler epoxy is 100% waterproof resisting damage by water which would otherwise cause wood rot, swelling, or cracking. It forms an impermeable layer over the wood surface to create a layer free of solvents, chemicals, acids, and soap.
CONCLUSION
Finally, the above article is all about the top picks for the best exterior wood filler epoxy that we filtered out from the web and test results from our lab. Out of the 10 selected picks, we hope and believe that you will find a perfect purchase decision for your specific wood filling needs.
Happy Shopping!
