Why Choose Helical Piles for Decks vs Concrete Footings

May 13, 2025

If you’re thinking about building a new deck or giving your old one a bit of an upgrade, you’ve prbably come across various options when it comes to the footings. Some of the most popular choices include concrete, timber and screw piles. With so many options, it’s only natural to wonder which one’s the best. 


The good news? Deck foundations don’t have to be complicated or take forever to build. There’s a smarter, more efficient way to get that sturdy deck in place with helical piles or screw piers.

Let’s explore why screw pile for deck foundation is the ideal choice for your next project.


Helical Piles for Decks


Helical piles for decks are a type of foundation that works perfectly by screwing them deep into the ground. They resemble large screws and are made from steel shafts with helical plates attached. These screw piles are designed to provide strong and stable support for various structures, including decks.


Once the helical piles are screwed into the ground, they create a secure and long-lasting foundation. Unlike traditional methods, there’s no need for extensive digging or waiting for concrete to set. These piles are ready to use immediately, which makes them an ideal option when speed and efficiency are a priority.


Benefits of Using Screw Piles for Deck Foundation


Screw piles for deck foundation bring a host of benefits that make them the go-to choice for homeowners and commercial property owners. 


Minimal Impact to the Landscape


With screw piles, there’s no need for large-scale excavation. The minimal disruption to your property means you can preserve your garden, lawn or nearby landscape features.


No Waiting Time


Once the piles are in, the deck building can start immediately. Unlike concrete footings, which require curing time, screw piles allow you to move forward right away.


Unaffected by Ground Movement


Helical piles for decks stay put and perform consistently even in expansive soils, shifting ground or challenging conditions during frost.


Perfectly Level Structure


Whether your land is flat or a little tricky, screw piles make it easy to achieve a levelled deck. This is ideal for areas that would typically need a lot of extra effort to level correctly.


No Delays Between Installation and Building


Screw piles save you time. They’re installed quickly, meaning you can start building your deck straight after installation without delays.


Ideal for Restricted Spaces


Screw piles installation can be done in tight spaces where larger machinery can’t fit. This makes them perfect for smaller properties or areas with limited access.


Possible in Any Season


Helical piles can be installed in all seasons, even when wet or cold, which makes them a reliable choice for any time of the year.


Removable and Reusable System


Not only are screw piles durable, but they can also be removed and reused if you decide to make changes later. This flexibility reduces waste and makes your deck foundation an environmentally friendly option.


Considerations for Screw Pile Deck Foundations


There are a few things to consider to make sure that a screw pile deck foundation works perfectly for your deck.


Number of Screw Piles


The number of piles you’ll need depends on several factors, including the deck size, weight and the soil type in your area. A larger deck may require more piles to distribute the weight evenly.


Site Preparation


Before installation starts, site preparation is necessary to clear the area of any obstacles, such as rocks or plants. The smoother the site, the faster the installation.


Screw Pile Placement Planning


Planning the placement of screw piles is done to make sure that the deck will be stable and balanced.


Budget


While screw piles might seem expensive upfront, they can actually save you money in the long run. There’s no need for expensive concrete pours, and the speed of installation can reduce labour costs too.


A Deck on Screw Piles: Cost Comparison with Concrete Footings


If you're deciding which option is more affordable, here’s how screw piles compare to traditional concrete footings.


Size and Complexity of Your Deck


If your deck has multiple levels or intricate designs, screw piles might be more cost-effective. They’re quicker to install, which helps offset higher upfront costs.


Local Building Codes and Regulations


Some areas may prefer screw piles, especially in locations with strenuous soil conditions. Check local guidelines to see if screw piles are a recommended solution.


Cost of Materials and Labour in Your Area


Depending on where you live, screw piles might be more affordable due to the availability of materials and faster installation, reducing the overall cost of your deck.


Accessibility to the Installation Site


If your site has limited access, screw piles may be the only viable solution. Installing concrete footings in small or steep areas can be expensive and challenging.


Soil Conditions and Stability


Screw piles are a top choice for soft, sandy or wet soil types, where concrete may struggle. Their ability to anchor deep into the ground makes them perfect for less stable sites.


Type and Quality of Materials Used


While a deck on screw piles may cost more initially, high-quality materials can save you money in the long term by providing a lasting, low-maintenance foundation.


Design and Layout of the Deck


A simple deck design might make concrete footings cheaper, but for a custom or unique layout, screw piles are often the better investment because of their flexibility.


Weather Conditions and Seasonal Availability


Weather can cause construction delays with concrete, but screw piles can be installed anytime, reducing the risk of delays in your building schedule.


Thinking of Helical Piles for Decks? Consult MRN Excavations Today!


If you're ready to build a deck with a dependable foundation, a deck on screw piles is a smart, modern choice for a strong and stable support for your decks. They are fast to install, environmentally friendly and built to last, perfect for both residential and commercial projects.


At MRN Excavations, we don’t just dig and build. We create lasting foundations for your outdoor spaces. Backed by extensive expertise in helical pile installation for Sydney, Campbelltown, Wollongong and Nowra, we blend insightful advice with exceptional service to turn your project into reality. 


Get in touch with us today to make sure your helical piles for decks are just as strong and reliable as they should be!


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