Building a deck is an exciting project, whether you’re a seasoned DIYer or a first-time builder. A deck can add value to your home and be a welcoming outdoor space to spend time with friends and family. But it’s not the simplest DIY project out there. With many details to consider, even small mistakes can lead to safety issues, costly repairs, or a shorter lifespan for your deck.
At Royal Deck, we’ve seen it all—from minor errors that affect the look of a deck to major oversights that compromise its safety and durability. In this guide, we’ll walk you through the 10 most common deck building mistakes we see amateur builders make and provide expert tips on how to avoid them. Whether you’re planning a new build or looking to improve an existing deck, following this guide will help you avoid the pitfalls and build a deck that’s safe, sturdy, and built to last.
1. Not Following Local Building Codes or Failing to Get Proper Permits
One of the biggest mistakes DIY deck builders make is ignoring local building codes or skipping the permitting process altogether. Building codes exist to ensure your deck is safe, properly constructed, and up to standard. Failing to get the proper permits or following the regulations could result in fines, delays, or even being forced to tear down your deck if it doesn’t meet safety standards. Worse yet, improper deck construction can be hazardous.
How to Avoid This Mistake:
Before starting your project, research your local building codes and apply for any required permits. Most local municipalities have online resources or offices where you can check the requirements. This simple step will save you time, money, and headaches down the road, ensuring your deck is built safely and legally.
2. Setting Piers in Disturbed Soil
Setting piers in disturbed or loose soil is a common mistake that can lead to serious problems down the road. Piers are the foundation of your deck, and if they’re not set in stable, undisturbed soil, the deck can shift, sink, or become uneven over time. Disturbed soil can occur when the ground has been recently dug up or moved, which means it won’t offer the same stability as solid, compact ground.
How to Avoid This Mistake:
To ensure a solid foundation, make sure you’re setting your piers in undisturbed soil. Dig deeper to reach solid ground if needed, or tamp down the soil to make it more stable. You must take your time during this step, as a strong base will prevent future issues with your deck’s stability and safety.
3. Building Inadequate Deck Post Footers
Deck post footers provide the support that holds your entire deck in place. If these footers are too shallow or not strong enough, your deck won’t be properly supported, which can lead to shifting, sinking, or even collapsing. Inadequate footers are a safety risk and can also cause structural issues over time, especially in areas with heavy foot traffic or poor soil conditions.
How to Avoid This Mistake:
Always make sure your deck footers are deep and wide enough to provide strong support. Check your local building codes for the required depth, especially in areas where the ground freezes. Typically, footers need to be below the frost line and reinforced with concrete to ensure they can handle the weight of the deck and the people using it.
4. Attaching the Ledger Board to the House Incorrectly
The ledger board is one of the most important parts of your deck. It connects the deck to your house and carries a major portion of the deck’s weight. If it’s not attached properly, the deck can become loose, unsafe, or even collapse. An incorrectly installed ledger board may cause gaps or cracks between the deck and the house, allowing water to seep in, which could lead to rotting or other long-term damage.
How to Avoid This Mistake:
Make sure to securely fasten the ledger board to the house’s structure using the appropriate hardware, such as lag screws or bolts, and ensure it is waterproofed to prevent moisture damage. Always follow manufacturer guidelines and local building codes for proper installation. This step ensures the deck is firmly anchored and safe to use.
5. Selecting the Wrong Decking Material
Choosing the right decking material is essential for the longevity and appearance of your deck. If you pick the wrong material, it could wear out quickly, be difficult to maintain, or simply not fit the climate where you live. For example, some materials are prone to rot in damp areas, while others might fade or crack under intense sunlight. Selecting a material that doesn’t suit your needs can lead to expensive repairs or even having to replace the deck entirely.
How to Avoid This Mistake:
Consider your local weather, how much maintenance you’re willing to do, and the look you want for your deck. Materials like pressure-treated wood, composite, or PVC each have different strengths and weaknesses. Research these options or consult with a professional to choose the best material that matches your climate and lifestyle.
6. Incorrectly Spacing Deck Joists
Deck joists are the horizontal boards that support your deck’s surface. If the joists are spaced too far apart, the decking boards could sag or become bouncy over time. This can weaken the overall structure of the deck, making it less stable and possibly unsafe. Properly spaced joists ensure the deck can handle weight and last longer without sagging.
How to Avoid This Mistake:
Follow the recommended spacing guidelines for your decking material. Typically, joists should be spaced 12 to 16 inches apart, but it depends on the type of material you’re using. Always refer to the manufacturer’s guidelines or consult a professional to ensure the joist spacing provides adequate support for your deck surface.
7. Using the Wrong Deck Fasteners
Fasteners, like nails, screws, or bolts, are what hold your deck together, so using the wrong type can cause serious issues. If you choose fasteners that aren’t suitable for your decking material, the boards may loosen over time or even come apart, making the deck unsafe. Some fasteners may corrode in certain weather conditions, leading to rust and weakening the deck’s structure.
How to Avoid This Mistake:
Always use fasteners recommended for the decking material you’re using. For example, stainless steel or coated screws are ideal for pressure-treated wood, while composite decking requires special fasteners. Make sure to follow the manufacturer’s guidelines and local building codes to ensure your deck is secure and built to last.
8. Building Stairs with Incorrect Riser Heights
The riser is the vertical part of each step in your deck’s staircase. If the risers’ height is uneven or doesn’t follow building codes, the stairs can be difficult and dangerous to use. Uneven risers can cause people to trip or lose their balance, which is especially risky for children or the elderly.
How to Avoid This Mistake:
Measure the height of each step carefully to ensure they are equal. Check your local building codes for the standard riser height, which is usually between 7 and 8 inches. Ensuring consistent and safe stair dimensions will make your deck easier and safer to use.
9. Blocking Access or Egress
Your deck should allow easy access to and from your house without blocking doors or windows. If you don’t plan the layout carefully, you could end up blocking important exits, making it harder to get in or out of your home safely. This can also cause issues in emergencies where quick access is needed.
How to Avoid This Mistake:
When designing your deck, make sure there’s enough space for doors and windows to open freely and without obstruction. Consider access points for the house and yard, ensuring there’s a clear path for movement. Proper planning will keep the area functional and safe.
10. Improperly Installing Handrails
Handrails are a critical safety feature for any deck, especially those with stairs or decks that are elevated off the ground. Without properly installed handrails, there is an increased risk of falls or accidents, which can be dangerous for anyone using the deck, particularly children or elderly family members.
How to Avoid This Mistake:
Always install handrails according to building code requirements. Ensure they are securely fastened and at the right height to provide support. Even if your deck is low to the ground, installing handrails on stairs or near edges will make it safer for everyone.
Avoid Common Deck Errors—Build with Royal Deck
Building a deck can be a rewarding project, but it’s important to avoid these common mistakes so your deck is safe, durable, and up to code. From proper planning and material selection to structural integrity, getting every step right is vital to creating a deck that you’ll be able to enjoy for years. Even small oversights can lead to expensive repairs or safety issues down the road.
At Royal Deck, we have the experience and expertise to build a deck that’s done right the first time. Skip the stress and avoid costly mistakes by partnering with us for your next deck project.
Ready to get started? Avoid common deck building mistakes by working with Royal Deck, your trusted deck experts. Contact us today to make your dream deck a reality!
As a top Atlanta deck builder, Royal Deck specializes in crafting incredible new decks, resurfacing existing ones, and designing porches that perfectly complement your home in the Atlanta Metro Area.
