Attention Fellow Woodworkers: This site contains affiliate links. If you click one of those links and then make a purchase we may receive a small commission at no additional cost to you.

How Can I Prevent Wood From Splitting Or Cracking?

Are you tired of seeing your precious wooden furniture or projects split or crack? Don’t worry, there are steps you can take to prevent this frustrating problem. In this article, we will explore effective techniques and tips on how to keep your wood intact and flawless. By following these simple guidelines, you can ensure that your wood remains strong and beautiful for years to come. So, let’s dive right in and discover the secrets of preventing wood from splitting or cracking!

Understanding Wood Splitting and Cracking

Wood splitting and cracking are common issues that can occur with different types of wood. Understanding the causes and different types of wood splitting and cracking is essential in order to prevent and address these issues effectively.

Causes of Wood Splitting

Wood splitting can occur due to a variety of reasons. The most common causes include:

  1. Moisture content: When wood absorbs moisture, it expands, and when it loses moisture, it contracts. These fluctuations in moisture content can lead to splitting, especially if the wood is not properly sealed or protected.

  2. Internal stress: Wood can have internal stress due to the way it grows, which can create tension within the fibers. Over time, this internal stress can lead to splitting.

  3. Improper drying: If wood is not dried properly before it is used, it can retain excess moisture, making it more prone to splitting as it dries out further.

  4. Physical impact: Harsh impacts or excessive force applied to the wood can cause it to split.

Causes of Wood Cracking

Wood cracking, on the other hand, is caused by different factors. Some common causes of wood cracking include:

  1. Rapid drying: When wood dries too quickly, it can cause the outer layers to shrink faster than the inner layers, resulting in cracks.

  2. Environmental factors: Exposure to extreme temperatures, high humidity, or direct sunlight can cause wood to crack over time.

  3. Natural defects: Some wood species are more prone to cracking due to their inherent characteristics, such as knots or irregular grain patterns.

Different Types of Wood Splitting and Cracking

Wood splitting and cracking can manifest in various forms. Understanding these different types can help in identifying and addressing the specific issues. Some common types include:

  1. Radial splits: These splits run from the center of the wood to the outer edges, following the direction of the wood’s growth rings.

  2. Tangential splits: Tangential splits occur parallel to the growth rings of the wood and are commonly seen in flat-sawn boards.

  3. Surface checks: Surface checks are shallow cracks that occur on the surface of the wood and do not penetrate deeply.

  4. Shake cracks: Shake cracks appear as long, deep splits that run through the wood, often caused by the separation of the growth rings.

Choosing the Right Type of Wood

Selecting the appropriate type of wood is crucial in preventing wood splitting and cracking. Consider the following factors when choosing wood:

Durable and Resistant Wood Species

Opt for wood species that are known for their durability and natural resistance to splitting and cracking. Examples of such species include teak, cedar, and redwood.

Avoiding Wood with Natural Defects

Inspect the wood for any natural defects, such as knots or irregular grains, as these areas are more prone to splitting and cracking. Choose wood pieces with fewer defects to minimize the risk.

Stable and Straight-Grained Wood

Look for wood that has stable and straight grains, as this indicates better structural integrity and a reduced likelihood of splitting and cracking. Avoid wood with irregular or twisted grains, as they can weaken the overall structure.

Proper Wood Storage and Handling

Proper storage and handling of wood are vital in preventing splitting and cracking. Here are some guidelines to follow:

Controlling Moisture Levels

Keep the moisture content of the wood in check by storing it in a dry environment. Avoid exposing the wood to excessive humidity or direct contact with water, as this can lead to swelling and increased risk of splitting.

Allowing Proper Air Circulation

Ensure that the wood is stored in an area with adequate air circulation to prevent moisture buildup. Proper airflow helps maintain a consistent moisture level throughout the wood, reducing the chances of splitting and cracking.

Avoiding Direct Sunlight Exposure

Protect the wood from direct sunlight, as prolonged exposure can cause the wood to dry out excessively, leading to cracking. Store the wood in a shaded or covered area to shield it from harmful UV rays.

Protecting Wood from Extreme Temperatures

Avoid storing wood in areas with extreme temperature fluctuations, as this can cause the wood to expand and contract rapidly, increasing the risk of splitting and cracking. Keep the wood in a stable temperature environment for optimal preservation.

Preventing Wood Splitting with Techniques

Several techniques can help prevent wood splitting. Incorporate these practices into your woodworking projects:

Using Pilot Holes

Before driving screws or nails into the wood, make pilot holes to provide a guide for the fastener. This reduces the stress on the wood and minimizes the risk of splitting.

Avoiding Nails Near the Edge

When using nails, avoid placing them too close to the edge of the wood, as this area is more prone to splitting. Position nails slightly away from the edge to maintain structural integrity.

Pre-drilling and Countersinking Screw Holes

Pre-drilling pilot holes for screws and countersinking them allows the screws to sit flush with the wood surface. This technique reduces the likelihood of splitting when fastening pieces together.

Using Split-proof Fasteners

Invest in split-proof or spiral-threaded fasteners specially designed to minimize splitting. These types of fasteners provide better holding power while reducing the risk of wood splitting.

Using Wood Glue and Clamps

For added reinforcement, use wood glue along with fasteners when joining pieces together. Applying pressure with clamps during the drying process helps create a stronger bond and minimizes the potential for splitting.

Using Screws Instead of Nails

Screws provide better resistance to splitting compared to nails. Opt for screws when fastening wood pieces together, especially in areas prone to splitting.

Avoiding Over-tightening Fasteners

Avoid over-tightening screws or nails, as excessive force can cause the wood to split. Tighten the fasteners to a firm hold, but avoid applying unnecessary pressure that can compromise the wood’s integrity.

Preventing Wood Cracking with Techniques

To prevent wood cracking, utilize these techniques during different woodworking processes:

Proper Sawing and Cutting Techniques

Use proper sawing techniques to minimize stress on the wood. Make sure the saw blade is sharp to reduce friction, which can lead to overheating and eventual cracking.

Using the Right Saw Blade

Select the appropriate saw blade for the type of wood you are working with. Different blades are designed for specific wood types, ensuring clean and precise cuts while reducing the risk of cracking.

Avoiding Overheating While Sanding

When sanding wood, be cautious not to apply excessive pressure or overheat the surface. This can cause the wood to dry out too quickly and crack. Use a light touch and take breaks to allow the wood to cool down.

Using Proper Joinery Techniques

Choose appropriate joinery techniques, such as dovetails or mortise and tenon, for structural integrity. These techniques distribute stress more evenly, reducing the likelihood of cracking.

Using Wood Sealers and Protective Finishes

Applying wood sealers and protective finishes creates a barrier that shields the wood from moisture and environmental factors. These products help maintain the wood’s moisture balance and prevent cracking.

Preventing Wood Splitting and Cracking in Outdoor Settings

When working with wood in outdoor settings, take additional precautions to prevent splitting and cracking:

Applying Protective Coatings

Coat outdoor wood surfaces with weather-resistant paints, stains, or sealants to protect them from direct exposure to the elements. Regularly check and maintain these coatings to ensure their effectiveness.

Using Seasoned or Pressure-treated Wood

Choose wood that has been properly seasoned or pressure-treated for outdoor applications. These types of wood have undergone treatments that make them more resistant to splitting and cracking.

Avoiding Water Accumulation

Prevent water from accumulating around or penetrating into outdoor wood structures by providing proper drainage and sealing any potential entry points. Regularly check for areas prone to water accumulation to address them promptly.

Regular Maintenance and Inspection

Regularly inspect outdoor wood structures for signs of splitting or cracking. Address any issues promptly by repairing or replacing affected parts. Additionally, perform routine maintenance tasks, such as resealing or repainting, to prolong the lifespan of the wood.

Common Mistakes to Avoid

By avoiding these common mistakes, you can significantly reduce the risk of wood splitting and cracking:

Ignoring Wood Moisture Content

Failing to consider the moisture content of the wood before using it can result in future splitting or cracking. Make sure the wood is properly dried or acclimated before incorporating it into your projects.

Using Incorrect Fasteners

Using the wrong type or size of fasteners can weaken the wood and increase the risk of splitting. Always choose fasteners that are appropriate for the specific wood type and project requirements.

Neglecting Proper Wood Storage

Improper storage of wood can lead to changes in moisture content, increasing the likelihood of splitting and cracking. Store wood in a controlled environment to maintain consistent moisture levels and reduce the risk of damage.

Skipping Protective Finishes

Neglecting to apply protective finishes to the wood leaves the surface vulnerable to moisture and other damaging elements. Apply appropriate sealers or finishes to enhance durability and prevent splitting and cracking.

Seeking Professional Help

In some cases, seeking professional help is the best course of action to prevent wood splitting and cracking:

Consulting a Woodworking Expert

If you are unsure about wood selection, techniques, or preventative measures, consult a woodworking expert. They can provide guidance and recommendations based on their experience and knowledge.

Hiring a Professional Carpenter

For complex or large-scale woodworking projects, engaging the services of a professional carpenter is advisable. They possess the skills and expertise to handle the project properly, reducing the risk of wood splitting and cracking.


Understanding the causes, types, and prevention techniques for wood splitting and cracking is essential for maintaining the longevity and durability of wooden structures. By selecting the appropriate wood, implementing proper storage and handling practices, utilizing preventative techniques, and avoiding common mistakes, you can ensure that your woodworking projects remain free from splitting and cracking issues. Taking preventive measures and seeking professional help when needed will help you enjoy the beauty and functionality of your wooden creations for years to come.

If you enjoyed this article, please share with your audience!


The Art of Woodworking

Get your FREE 440-page Woodworking Guide. Includes 40 Step-by-Step Plans in Full Color.

The Art of Woodworking Book

We value your privacy and we’ll never spam you.

The Art of Woodworking

Get your FREE 440-page Woodworking Guide. Includes 40 Step-by-Step Plans in Full Color. The “Art of Woodworking” guide is a jam-packed, no fluff guide to all things woodworking! And to top it off you’ll also get fully detailed step-by-step plans to many different projects!
The Art of Woodworking Book

Download your copy of this FREE guide

We value your privacy and we’ll never spam you.