Deck Material Selection: How to Choose the Right Deck Materials

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Apr 8
4 min read

Building a deck is an exciting project! But before you start hammering nails or picking colors, you need to think about the materials. Choosing the right deck materials can make all the difference between a deck that lasts for decades and one that needs constant repairs. I’ve been through this process, and I want to share what I’ve learned to help you make smart choices for your outdoor space.

Understanding Deck Material Selection: What You Need to Know

When it comes to deck material selection, there are several factors to consider. You want something that looks great, fits your budget, and stands up to the weather here in Lower Michigan. The climate can be tough on decks - think cold winters, hot summers, and plenty of moisture. So, durability is key.

Here are the main types of deck materials you’ll encounter:

Wood: Classic, natural, and renewable only requires maintenance every 2-4 years if properly cleaned and stained.
Composite: Made from wood fibers and plastic. If not properly installed can twist and warp. low maintenance with a price.
PVC: 100% plastic, very durable if not installed in colder climates and low maintenance.
Aluminum: Lightweight, strong, and resistant to rust.
Concrete: Rare for decks but very durable and modern-looking.

Each has its pros and cons. For example, wood looks beautiful and feels natural underfoot, and needs regular cleaning and staining. Composite decks are easier to care for but can be more expensive upfront.

Eye-level view of wooden deck boards with natural grain

What is the 30cm Rule for Decking?

You might have heard about the 30cm rule when planning your deck. This is a simple but important guideline that helps ensure your deck stays dry and lasts longer.

The rule says that the bottom of your deck boards should be at least 30 centimeters (about 12 inches) above the ground. Why? Because keeping the deck elevated prevents moisture from the soil from seeping into the wood or other materials. Moisture is the enemy of decks - it causes rot, mold, and warping.

If your deck is too close to the ground, water can pool underneath, and insects like termites can find easy access. By following the 30cm rule, you improve air circulation under the deck, which helps it dry faster after rain or snow.

This rule applies no matter what material you choose. Even composite and PVC decks benefit from good airflow and clearance. So, when you’re planning your deck’s height, keep this in mind!

Comparing Popular Deck Materials: Pros and Cons

Let’s dive deeper into the most popular deck materials and what you can expect from each.

Wood Decking

Wood is the traditional choice. It’s warm, natural, and can be very affordable depending on the type.

Pros: Beautiful natural look, easy to work with, widely available.
Cons: Requires regular maintenance like staining and sealing.

Common wood types include pressure-treated pine, cedar, and redwood. Cedar and redwood resist rot better but cost more. Pressure-treated pine is budget-friendly but needs more upkeep.

Composite Decking

Composite decking is made from recycled wood fibers and plastic. It’s designed to look like wood but with less hassle.

Pros: Low maintenance, resistant to rot and insects, doesn’t splinter, available in many colors.
Cons: Higher upfront cost, can get hot in direct sun, some products may fade over time.

Composite is a great choice if you want a deck that looks good year-round without much work.

PVC Decking

PVC decking is 100% plastic, so it’s very durable and weather-resistant.

Pros: Extremely low maintenance, won’t rot or splinter, resistant to stains and fading.
Cons: Can be more expensive, less natural look, may feel less solid underfoot.

PVC is perfect if you want a deck that’s virtually maintenance-free and can handle harsh weather.

Aluminum Decking

Aluminum decks are strong, lightweight, and rust-resistant.

Pros: Long-lasting, fire-resistant, low maintenance, won’t warp or crack.
Cons: Can be noisy underfoot, higher cost, limited color options.

Aluminum is ideal for modern designs and areas where fire safety is a concern.

Concrete Decking

Concrete decks are less common but offer a unique, modern look.

Pros: Extremely durable, low maintenance, customizable with stains and textures.
Cons: Can be cold and hard, expensive installation, cracks can develop over time.

Concrete works well for patios or decks that double as outdoor living spaces.

High angle view of composite decking with modern outdoor furniture

How to Choose Deck Materials That Fit Your Budget and Lifestyle

Budget is always a big factor. Wood is usually the cheapest upfront but costs more over time due to maintenance. Composite and PVC have higher initial costs but save money on upkeep.

Ask yourself:

How much time do I want to spend maintaining my deck?
What look do I want to achieve?
How long do I want my deck to last?
What’s my budget for installation and upkeep?

If you want a natural look and don’t mind some maintenance, wood is a solid choice. If you want low maintenance and durability, composite or PVC might be better.

Also, think about your family and how you’ll use the deck. If you have kids or pets, splinter-free surfaces like composite or PVC are safer.

Final Tips for a Deck That Lasts

Before you wrap up your deck plans, here are some final tips I’ve picked up:

Ventilation is key: Follow the 30cm rule and make sure your deck has good airflow underneath.
Choose quality fasteners: Use stainless steel or coated screws to prevent rust.
Consider local climate: Materials that handle moisture and temperature swings well are best for Lower Michigan.
Plan for drainage: Make sure water doesn’t pool on or under your deck.
Think long-term: Sometimes spending a bit more now saves headaches later.