
Some Helpful Tips and Suggestions
- 1. Inspect the gap to see whether it is a tight or loose fit. ...
- 2. If the gap is wider than 1/4 inch, use wood putty to fill it. ...
- 3. Choose a putty or caulk that closely matches the color of your deck.
- 4. To apply wood putty, knead the putty until it is pliable, then press it into the gap. ...
How do you fill cracks in a wood deck?
With a putty knife, fill any cracks in the wood that are under 4 inches in length with a latex wood filler that is formulated for outdoor application and will not shrink, crack or flake when exposed to rain and sun. Allow the deck to dry completely.
Can you use wood filler on decking?
Wood putty tends to crack or break out of the voids you put it in when you use it on wooden decking. This is especially true in an area that gets wintry weather: The natural freezing and thawing processes will quickly cause wood filler and caulk to fail. Also, outdoor wood filler doesn’t look natural on a deck. Can You Stain Wood Filler?
Why is my deck cracking?
This expansion and contraction can cause the wood to crack. These cracks are typically contained to the surface of the wood and won’t harm the structural integrity of your deck if properly taken care of. How Can I Fix Cracks? Fixing cracks in your deck is a great alternative to replacing entire boards or even the entire deck.
Can I use wood crack filler on pressure-treated wood?
Pressure-treated wood is full of preservatives that prevent severe cracks and damage, so you’re not likely to have cracking that’s bad enough to need filling. But we don’t recommend using wood crack filler on any type of wooden deck, including one made with pressure-treated wood. Have a Question? Ask Below! Please Rate This.

How do you fill in cracks in a deck?
Once the wood is dry, fill any gouges, holes, and cracks deeper or wider than ¼ inch with a paintable acrylic caulk. Use a putty knife to scrape off the excess, then allow the caulk to set until it skins over, probably 30 minutes.
What to use to fill gaps in deck boards?
4) How to Fill Gaps in Decking After you clean the deck, cut a sufficient amount of natural fiber rope that will fit the length of each gap. Don't use synthetic rope because stain and paint won't adhere to the material. Make sure the rope is slightly wider than the gap so you'll have a tight fit.
Is there a wood filler for decks?
Best Wood Filler for Decks: Elmer's E855 Wood Filler This is an ideal wood filler for deck cracks. The size of tube allows you to squeeze the product directly into cracks, making application even easier. This filler also resists shrinking and cracking, leaving you with a clean and even surface long after application.
What do you use to fill cracks in pressure-treated wood?
PC-Woody is a Two-part epoxy paste that is used to fill holes and gaps in damaged or decaying wood decks. This wood filler for pressure-treated lumber has an easy-to-mix ratio. Simply mix equal parts of the resin and the hardener in a plastic or metal container, then apply them to your project.
How do you fill in between floor boards?
Three Methods To Fill Gaps In Wood FlooringUsing a dust and resin filling. This is one of the most commonly used ways of filling smallish (less than 5mm) gaps in a wooden floor. ... Introducing filler strips. ... Inserting a colour-match acrylic filler.
How do I repair damaged wood deck?
Removing Nails and Screws. For a cosmetic deck issue, it's easiest to remove the plank, flip and refasten. ... Inspect Joists and Remove Rotted Portions. Inspect the joists underneath for signs of rotted wood. ... Reinforce the Joist. ... Replacing a Joist. ... Prepare Replacement Deck Board. ... Apply Wood Stain. ... Attach New Decking.
What is the best wood filler for decking?
Reviews of the Best Wood Fillers for DecksPC Products Wood Repair Epoxy. ... DAP Latex Plastic Wood Filler. ... Abatron WoodEpox Epoxy Wood Replacement Compound. ... Elmer's Color Change Wood Filler. ... FamowWood Latex Wood Filler. ... Minwax 42853000 Stainable Wood Filler. ... Gork's GoodFilla.
What's the best outdoor wood filler?
Best Exterior: 3M Bondo Wood Filler Once cured, which only takes around half an hour, it is fully bonded to the wood, creating a permanent repair that won't shrink or warp and is resistant to moisture. Within 15 minutes of application, you can sand it by hand or with a power sander.
How do you fill outdoor wood cracks?
Filling Cracks in Exterior Wood Before PaintingPressure washing the exterior of the house.Scraping to remove loose paint.Painting primer on the entire exterior surface.Using the exterior filler (spackle) to cover all the uneven areas.Sanding the spackled areas once dry.Painting another coat of primer.More items...•
Can I use wood filler on pressure treated wood?
Pressure-treated wood is full of preservatives that prevent severe cracks and damage, so you're not likely to have cracking that's bad enough to need filling. But we don't recommend using wood crack filler on any type of wooden deck, including one made with pressure-treated wood.
What epoxy should I use to fill cracks in wood?
The best Epoxy to fill knot holes is TotalBoat Epoxy Resin Crystal Clear. This is a two-part liquid epoxy that comes with the resin and hardener –mix using the ratio of 1:1. This Epoxy is self-leveling and can be tinted to match the wood color.
Should I fill cracks in pressure treated wood?
Unless you plan to give it a complete surface finish (strong enough to keep the moisture content inside the wood in check) I would not care about filling the cracks: but I would give it a surface treatment regularly, in a way that it can get inside those big cracks too (since that's also surface).
How do you close gaps on a deck board?
2:203:37Quick Tip: How To Keep Consistent Gaps On The End Of Deck BoardsYouTubeStart of suggested clipEnd of suggested clipAnd then i'll go down to the next area that i need to check and make sure i don't have any funkyMoreAnd then i'll go down to the next area that i need to check and make sure i don't have any funky gaps and i'll equalize all the gaps with my shims.
How do you fill gaps between wooden boards?
0:161:38How to Fill Gaps In a Wide-Plank Wood Floor | This Old HouseYouTubeStart of suggested clipEnd of suggested clipBecause we may want to color or tint. This. Now this is not rocket science believe me we're going toMoreBecause we may want to color or tint. This. Now this is not rocket science believe me we're going to do it just like the boat builders would do it line it up with the joint. And basically slide it in.
Can you use wood filler on outside deck boards?
Minwax Stainable Wood Filler You can use it inside and outside without worrying about it flaking away, and it works very well when used to repair small gouges, cracks, knot holes, nail holes, and defects in unfinished outdoor and indoor wooden surfaces.
How do you fill gaps on a porch board?
Apply high-performance polyurethane -- rather than silicone caulk -- to each gap. Load the polyurethane caulk tube into your caulk gun and run it along the length of each board, working it into the gap and smoothing it flush with the porch floor.
How to fix cracks in wood railing?
Using a putty knife, plug any cracks on the wooden board, railings, balusters, posts that are less than four inches in length. Use a latex wood filler that will not swell, shrink, crack or flake when exposed to harsh weather conditions. Ensure that the wood filler is meant for outdoor application.
How deep are cracks in a deck?
If there are cracks and holes in the wooden deck, which are less than four inches in length, we need to have one approach for repairing them. And if the cracks are deeper than four inches, there is a separate process to follow.
Why does my wood deck crack?
Over the years of constant usage, the deck develops cracks. Since wood shrinks during winters and swells up during the rainy season, these cracks appear on the surface . When that happens, the wooden deck looks ugly and shabby. If you have been wondering, how to fill cracks in wood deck, continue to read further.
How long does it take for a wood deck to dry?
Moisture content of 15% or less is needed for the wood to be ready for staining. If you live in a moderately humid, sunny area, it takes about four consecutive days without rain for the deck to dry up completely.
What is a joist on a deck?
A joist is a length of timber that is arranged in parallel series to provide support to a floor or ceiling. Take a screwdriver and sink its tip in every crack to check the depth. To avoid further damage to the wooden deck, you need to get to work immediately.
How to clean a deck with bleach?
You can even make your own solution by adding one-quart household bleach ( sodium hypochlorite), 1/3 cup of laundry detergent powder, and three-quarters of warm water. After mixing them thoroughly in a bucket using a good quality scrub to clean the entire length and breadth of the deck.
Can you stain wood with paint?
The colored pigment will give a smooth sheen to the wooden deck and safeguard the wood from the harsh rays of the Sun. The wood stain will be absorbed into the wood and provide a thin covering. If you would have used wood paint, then there would have been chances of it peeling off after a few months of use. Do not forget to apply wood stain to railings, posts, top rail, bottom rail, balusters, and any other part of the deck which is visible.
Why do deck boards crack?
Consider staining the deck before sealing it to match the repairs to the wood that is not being repaired or replaced. Constant exposure to moisture and heat causes wood deck boards to crack, and small or hairline cracks are an unavoidable consequence of your deck's aging process.
How to pull out a nail board?
Place the prongs of a nail puller beneath the head of the nails holding the board in place, and apply pressure to the other end of the nail puller to pull them out.
What to use to fill cracks in wood?
With a putty knife, fill any cracks in the wood that are under 4 inches in length with a latex wood filler that is formulated for outdoor application and will not shrink, crack or flake when exposed to rain and sun.
Where is Cheryl Torrie?
Cheryl Torrie. Based in Covington, Tenn., Cheryl Torrie has been writing how-to articles since 2008. Her articles appear on eHow. Torrie received a certificate in travel and tourism from South Eastern Academy and is enrolled in a computer information systems program at Tennessee Technology Center at Covington.
What is wood filler?
Wood filler makes a significant part of woodworking. The fillers enable you to repair the dents on the surface of your decks faster. If you are looking to improve your wooden structures, whether you are a woodworking enthusiast or a carpenter, having the best wood fillers for decks is the right step towards removing imperfections and improving the look on your furniture.
What is the best wood filler for a deck?
The Elmer’s E855 Carpenter’s Wood Filler is a very portable product, that’s why we classify it as one of the best wood fillers for decks. This product is available in a 3.25 oz and 7-inch long tube, making it virtually pocket size product. It is water-based, and you can paint and sand it.
What is the most common type of wood filler?
Cellulose-Based Wood Filler: It is the most common type of wood filler you will find in the market. It’s available in pastes and powder that is mixed together using different solvents.
What is the temperature of a sandpaper?
It has an application temperature range of 35-115 degrees F plus a service temperature of between -20 to +200 degrees F
What is water based wood filler?
Water-Based Wood Fillers: These need water to activate the putty. Mostly they are in powder form.
Does Donald Durham's Rockhard putty shrink?
This formula is dense, fills, and binds any material- wood or even concrete. Donald Durham’s Rockhard putty does not shrink over time, which implies that it will last for as long as the material you will fill. Inside the box, you will get a white powder that requires only water as a solvent during preparation.
Can you stain epoxy wood?
One drawback of this product is that you cannot stain it easily. However, it’s a good wood filler for outdoor projects due to its strong resistance. Even if applied on a structure that receives direct sunlight, this product will still not crack with time a characteristic shared by all epoxy wood fillers.

Introduction
Step-By-Step Instruction- How to Fill Cracks in Wood Deck
- To Fill Cracks in Deck Under Four Inches in Length
Now you are getting to the point of starting the process of how to fill cracks in wood deck. - Step 1- Inspect the Entire Deck
Commence the project by inspecting the entire deck. You need to pay special attention to any area that is in direct contact with sunlight or water. Even to any area which touches the ground like the posts or joists. A joist is a length of timber that is arranged in parallel series to provide s…
to Fill Cracks in Deck Over Four Inches in Length
- Step 1 – Remove the Nails
Use a nail puller to pull out the nails of the wooden plank in which there are visible cracks. If the cracks are deeper than 4 inches, then you will need to replace the wooden plank. Image Source - Step 2- Replace the Board
From the deck joists, you have to pull out the entire length of the wood as it is rotten beyond repair. Get a new piece of wood of the same size and use 2-inch wood screws to secure them at all of the joists. You can even flip the old piece of wood if the other side is good and usable and …
Conclusion
- Now you learned the complete process of how to fill cracks in wood deck. Put it to real practice and enjoy your free time doing something productive. In turn, you will pick up a new skill and save a lot of money too. So why not use that money for some investments? During the current pandemic, when many people across the globe lost their primary sources of income, you must h…