Composite decking has become a popular choice for Calgary homeowners seeking low-maintenance, durable outdoor spaces. However, a common concern arises: do composite decks get hot in the sun? Given Calgary’s unique climate—characterized by high UV exposure and significant temperature fluctuations—it’s essential to understand how composite decking performs under these conditions.
Understanding Composite Decking and Heat Retention
Composite decking is crafted from a blend of wood fibers and recycled plastics, resulting in a dense material that offers resistance to rot, insects, and weathering. However, this density can also lead to higher heat retention compared to traditional wood decking.
Studies indicate that composite decking can become 35 to 76°F hotter than the surrounding air temperature when exposed to direct sunlight. This means that on an 80°F day, your deck’s surface could reach temperatures exceeding 150°F, making it uncomfortable for bare feet and pets.
Factors Influencing Deck Temperature
Several elements contribute to how hot your composite deck may become:
1. Color of the Decking
Darker-colored decking absorbs more heat than lighter shades. Opting for lighter hues like beige, light gray, or tan can help keep your deck cooler.
2. Surface Texture
Smooth surfaces tend to retain more heat. Choosing decking with a textured or grooved surface can promote better airflow and reduce heat retention.
3. Sun Exposure
Decks with full sun exposure throughout the day will naturally become hotter than those with partial shade. The orientation of your deck and the presence of surrounding structures or trees can influence sun exposure.
4. Material Composition
Not all composite decking is created equal. Some manufacturers incorporate cooling technologies or specific materials designed to reflect heat and reduce surface temperatures. For example, CoolDeck® technology from MoistureShield claims to lower heat absorption by up to 35%.
Calgary’s Climate and Its Impact on Decking
Calgary’s climate poses unique challenges for outdoor decking:
- High UV Exposure: Calgary’s elevation results in stronger UV rays, which can increase the heat absorbed by decking materials.
- Temperature Fluctuations: The city experiences significant temperature swings, which can affect the expansion and contraction of decking materials.
- Dry Conditions: Low humidity levels can influence how quickly materials heat up and cool down.
Given these factors, selecting the right decking material and design is crucial for comfort and longevity.
Composite vs. Wood: A Heat Comparison
While composite decking is known for its durability and low maintenance, how does it compare to traditional wood in terms of heat retention?
- Composite Decking: As mentioned, composite materials can become significantly hotter than the ambient temperature.
- Wood Decking: Natural wood tends to stay cooler underfoot, especially lighter-colored woods. However, wood requires regular maintenance to prevent issues like rot, splintering, and insect damage.
For a detailed breakdown of both materials, visit our Wood vs. Composite Decking guide.
Tips to Keep Your Composite Deck Cool
If you’re concerned about your deck becoming too hot during Calgary’s summers, consider the following strategies:
1. Choose Lighter-Colored Decking
As previously mentioned, lighter colors reflect more sunlight, reducing heat absorption.
2. Incorporate Shade Structures
Installing pergolas, awnings, or shade sails can provide relief from direct sunlight, keeping your deck cooler.
3. Use Outdoor Rugs or Mats
Placing rugs or mats in high-traffic areas can provide a cooler surface for walking and protect feet from hot decking.
4. Install Misting Systems
Misting systems can help lower the ambient temperature on your deck, providing a more comfortable environment during peak heat.
5. Opt for Decking with Cooling Technology
Some composite decking products are engineered with surface-cooling additives. If heat is a top concern, consider products like MoistureShield with CoolDeck®, which are designed to stay cooler underfoot.
Planning Your Deck with Heat in Mind
When designing your deck, consider factors that can influence heat retention:
- Orientation: Position your deck to take advantage of natural shade or prevailing winds.
- Landscaping: Planting trees or shrubs can provide natural shade and reduce heat buildup.
- Material Selection: Choose decking materials and colors that align with your comfort preferences and maintenance expectations.
For more on how to set your project up for success, visit our Guide to Planning and Building a Deck.
Conclusion
While composite decks can become hot under Calgary’s summer sun, understanding the factors that contribute to heat retention and implementing smart design strategies can greatly improve your outdoor experience. From color selection to cooling features and shade planning, there are many ways to make composite decking a comfortable and long-lasting choice.
If you’re looking for low-maintenance decking that performs in Calgary’s challenging climate, we’re here to help. Learn more about your options on our Composite Decking Calgary page or contact us for a quote.
Let Econo Decks help you build a composite deck that stays cool, looks great, and lasts for years.
