As summer temperatures rise, decks can quickly become too hot to enjoy. Traditional decking materials, like wood, absorb and trap heat, making your outdoor space uncomfortable. But there are ways to prevent this. From composite decking to underdecking systems and shade structures, there are several strategies to reduce heat buildup and make your deck a more comfortable place to spend time.
In this blog, we’ll explore why decks get so hot, the best materials for keeping your deck cool, and practical solutions to help you enjoy your outdoor space all summer.
Why Does Your Deck Get So Hot in the Summer?
Decks absorb solar energy throughout the day. The lack of adequate shading, airflow, or heat-resistant materials means your deck can get 30 to 50 degrees hotter than the surrounding air, especially on south- or west-facing decks that receive intense afternoon sun. These conditions make the deck surface nearly impossible to walk on without protection.
Traditional wooden decks and darker composite materials trap heat more effectively. Without ventilation or shade, that heat lingers long into the evening, making it hard to use your outdoor space comfortably. The solution? Choose materials and designs that allow heat to dissipate efficiently.
Cool Decking Materials and Services
When building a deck, your chosen materials can significantly impact how hot your deck gets in the summer. Some materials absorb more heat, while others are designed to resist heat buildup and stay cooler. :
Composite Decking
Composite decking is one of the best materials for preventing heat buildup. Unlike traditional wood, which absorbs and retains heat, composite decking options like Trex, TimberTech/Azek, and Fiberon are designed to reflect sunlight and absorb less heat.
- Trex Decking: Made from wood fibers and recycled plastic, Trex is durable and heat-resistant. Lighter colors of Trex decking reflect sunlight, preventing heat absorption and keeping your deck cooler in the sun.
- TimberTech/Azek Decking: TimberTech combines wood fibers and polymer, resisting UV degradation and heat absorption. AZEK, made entirely of PVC, is one of the most heat-resistant materials in the composite decking category.
- Fiberon Decking: Fiberon features capped composite boards, which protect the material from heat absorption. This makes it a great option for decks that receive prolonged sun exposure.
Wood Decking Options
If you prefer a natural wood look, materials like IPE hardwood, cedar, and redwood are commonly used for decks. However, wood decks, especially dark-stained woods, absorb more heat than composite decking, making them uncomfortable to walk on during the hottest times of the day.
To manage heat, underdecking systems and shade structures like pergolas are often paired with wood decks to reduce the amount of direct sunlight and improve airflow.
Underdecking and Waterproofing Systems
Underdecking systems are crucial for multi-level decks or decks exposed to intense sunlight. Systems like DrySpace improve airflow beneath the deck, reducing trapped heat. This not only helps the deck stay cooler but also keeps the area beneath dry and ventilated.
Additionally, deck waterproofing systems help prevent moisture buildup under the deck and regulate temperature. By improving airflow beneath the deck, these systems are essential for reducing heat retention.
Cooling Solutions for Every Deck
In addition to using the right materials, structural features like covered decks and shade solutions can significantly lower deck temperatures.
Covered Decks: Protection from the Sun
A covered deck is one of the most effective ways to lower the temperature of your deck. A solid roof blocks direct sunlight, preventing the deck from absorbing heat. This shade helps regulate temperature under the deck and keeps it cooler throughout the day.
If your deck is exposed to full sun, a covered deck allows you to enjoy the outdoors in comfort, even on the hottest days. This is especially beneficial for decks without natural shade from trees or surrounding buildings.
Pergolas & Shade Structures: Comfort with Shade and Airflow
Pergolas and shade structures are ideal for providing partial shade while maintaining airflow. A pergola offers shade during certain parts of the day but still allows air to circulate, preventing your deck from becoming stuffy or too hot.
Customizable pergolas can offer varying degrees of shade. Adding fabric coverings, retractable awnings, or climbing plants can increase shade and reduce sun exposure, making your deck cooler and more comfortable for relaxation.
Deck Remodeling and Resurfacing
If your existing deck is too hot or you want to upgrade it, deck remodeling or deck resurfacing can help. Replacing your deck with composite decking or adding underdecking can reduce heat absorption and improve airflow.
Deck Resurfacing
If your wood deck has become too hot or damaged, resurfacing it with composite decking like Trex or TimberTech can solve the issue. These materials reflect more sunlight and reduce thermal absorption, keeping your deck cooler.
Deck Waterproofing
Incorporating deck waterproofing or underdecking systems into your remodeling project can improve airflow beneath the deck, reducing heat retention and keeping your outdoor space cooler. These solutions are essential for making your deck more comfortable year-round.
Screens & Fences: Cooling and Protection for Your Deck
Deck screens and fences reduce heat buildup by blocking direct sunlight, cooling the deck surface.
- Types:
- Privacy fences: Provide complete sunblock, reducing heat and improving comfort.
- Latticework screens: Allow partial sunlight and airflow, cooling the deck while providing shade.
- Additional Benefits:
- Wind barriers: Deck screens and privacy fences also block wind, regulate temperature, and keep the deck cooler.
- Microclimate creation: These structures limit sun exposure and improve airflow, creating a cooler deck environment during the summer heat.
Umbrellas: Flexible Shade Solutions for Your Deck
Cantilever umbrellas provide movable shade, perfect for deck seating or any sun-exposed space.
- Features:
- No Obstruction: Cantilever umbrellas don’t block views or pathways, ideal for flexible shade on deck surfaces.
- Adjustable: The umbrella’s angle and position can be changed throughout the day to maintain shade as the sun moves.
- Types:
- Freestanding umbrellas: Easily repositioned for shade wherever needed.
- Retractable umbrellas: Extend or retract for adjustable shade coverage, ideal for controlling sunlight on your deck.
FAQs
How do I keep my deck from getting hot?
Choose composite decking for better heat resistance, and add pergolas or covered decks to block direct sunlight. Underdecking systems also help by allowing airflow beneath the deck.
What materials are best for hot weather?
Composite decking options like Trex and TimberTech perform well in the heat, especially in lighter shades. PVC decking also remains cooler under the sun.
How can I cool down a hot wood deck?
Install a covered deck or pergola to provide shade. Underdecking systems can also reduce heat buildup by allowing airflow under the deck.
Does wood decking get hot in the sun?
Yes, especially hardwoods like IPE and oak. Pair wood decks with underdecking, shaded structures, or composite decking to keep them cooler.
How do I protect my deck from the sun?
Apply UV-protective sealants for wood decks, and use shade structures like pergolas or retractable awnings to block the sun.
Let’s Build a Cooler, More Comfortable Deck Together
At Rock Remodeling, we understand how important it is to have a beautiful and functional outdoor space in the heat. Our expertise in composite decking, covered decks, and multi-level deck designs ensures your deck will remain calm, comfortable, and durable all summer.
Contact us today if you’re ready to enjoy your deck without the heat holding you back. Let’s discuss how we can bring your vision to life with a deck built to handle summer’s warmth while providing a space you’ll enjoy for years.
