3 Underdeck Materials and Their Benefits

underdeck oasis

Are you thinking about having an underdeck system installed for your GA home? Underdecking is very versatile and can be installed on existing decks and new decks aike. There are many different materials you can use like vinyl, aluminum, and steel. Read on to learn about each type and its benefits and drawbacks.


Vinyl is a popular and affordable material for underdecking. It’s easy to install and comes in a large range of colors to choose from. Vinyl isn’t the best option for a long-term solution to your deck drainage needs. It’s not rigid enough for a stable underdeck water collection system and the vibration from walking on the deck above can cause the vinyl underdecking to loosen over time.


Steel is a strong and durable material but a steel underdeck system can rust over time. It’s also more difficult to cut and shape which can drive up the installation cost. Some underdecking is made from corrugated steel, which isn’t ideal as it won’t last long and might leak at the seams.


Aluminum is the most common underdecking material on the market. This type of material doesn’t expand or contract with changing temperatures like vinyl, and it won’t crack due to excess water. Aluminum is also strong enough to support fans, lights, and other accessories for your outdoor space.

RainAway Under Deck Systems are engineered to be the strongest deck drain systems on the market. Each system is reinforced with safety brackets to ensure stability and uses a special ventilation system to enhance airflow above and below the system to expedite drying after rainfall. Contact us today to learn more about getting an underdeck installed! We specialize in dry below deck systems, dry underdeck systems, underdeck drainage systems and basement waterproofing.

RainAway Under Deck Systems

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  • Customer Testimonials
    Almost one (very rainy) year ago, we used RainAway Deck Drain Systems to install our underdeck system at our home. It is fabulous. It is life changing. We now enjoy grilling, entertaining, reading, writing, relaxing on our patio under the deck. Rain or shine, we can still be outside and comfortable! After researching and talking to other similar companies, we chose RainAway. The quality, care and attention to every detail by the employees was amazing. And they take great pride in their work and want to make sure the customer is happy with the product. And the quality of the ...
    Couldn't be happier! Jeff was very helpful in answering a lot of the questions we had and was always quick to respond. He was able to get us scheduled and the team came out and did a tremendous job installing it within day. No leaks, it looks great, and now we have an extra living space outdoors to stay cool and dry! Thanks Jeff!
    Jeff Butler and his team did a GREAT JOB on our project!!! His crew was courteous and professional and finished the work on schedule and on budget. The finished product is better than we had imagined and we will enjoy it for many years to come.