There’s a specific kind of disappointment that comes from stepping off a cool pool onto a deck surface that’s been baking in the summer sun. You hop, you wince, you sprint for the nearest patch of shade. If you’ve ever experienced it, you know exactly the temperature swing that turns a relaxing afternoon into an obstacle course.
Merrimack summers aren’t Phoenix-hot, but they get warm enough that pool deck surface temperature genuinely matters. Add in New Hampshire’s freeze-thaw winters, the moisture exposure that comes with any pool, and the chlorine or saltwater splashing onto your surfaces multiple times a day, and you’ve got a material selection problem that’s more nuanced than most people realize.
Let’s go through what actually works around a New Hampshire pool, with a real focus on heat performance, because that’s the factor most homeowners underestimate until they’re standing barefoot on hot decking in mid-August.
Why Surface Temperature Matters More Than You Think
A dark surface in direct sun can easily reach 150°F or higher on a hot day, even when the air temperature is only in the mid-80s. That’s hot enough to cause real discomfort and, on extreme days, mild burns on sensitive feet. Kids feel it more than adults. Pets feel it most of all.
Two things drive surface temperature. Color (darker absorbs more heat) and material composition (some materials reflect heat better, some conduct heat away from your skin faster, some hold heat longer once they’ve absorbed it).
For pool decks specifically, you want a surface that stays close to ambient air temperature even in direct sun. That rules out a lot of popular materials and dramatically narrows the field of good choices.
Composite Decking Around a Pool
Composite decking is a wood-fiber-and-plastic blend wrapped in a protective polymer cap. It’s one of the most popular deck materials in New Hampshire generally, but its pool performance depends heavily on the specific product you choose.
Heat-wise, composite is a mixed bag. The wood fiber content actually makes composite retain more heat than pure plastic alternatives. Standard composite in a dark color can get genuinely hot in direct sun, hot enough to be uncomfortable underfoot. However, several manufacturers now produce composite decking specifically engineered to reduce surface temperature, using lighter colors, heat-reflective additives in the cap, and specialized formulations that can run 20 to 30 degrees cooler than standard composite.
If you’re going composite around a pool in Merrimack, three things matter. Choose a lighter color (tans, grays, and driftwood tones run significantly cooler than dark browns or blacks). Choose a product with documented heat-reflective technology. And accept that even the best composite will be warmer than PVC alternatives in peak sun.
Composite handles chlorine and saltwater well. The cap protects the wood-fiber core from moisture, and modern products are rated for pool-side use. Just be aware that cap damage (a dropped chair, an aggressive ice chipper in winter) can compromise that protection over time.
Pricing sits in the mid-range. Reliable, attractive, but not always the coolest underfoot.
PVC Decking Around a Pool
PVC decking is 100% synthetic with no wood content at all. For pool environments, this matters a lot. No organic material means nothing for mold or mildew to grow on, total resistance to moisture, and complete indifference to chlorine, salt, and pool chemicals.
The heat story is where PVC really separates itself. Several premium PVC manufacturers have engineered formulations specifically for cool-touch performance, using heat-reflective technology that keeps surface temperatures dramatically lower than traditional decking materials. Some products advertise surface temperatures up to 30 to 40 degrees cooler than dark composite in identical sun conditions. In real-world Merrimack summer use, that’s the difference between a deck you can stand on barefoot and one you can’t.
PVC also has a slight edge in another important pool-deck factor. Texture. The best PVC products use a multi-directional surface pattern that provides solid traction even when wet, which matters when kids are running around dripping pool water.
The trade-offs are price and feel. PVC sits at the top of the decking market in cost. It also feels slightly lighter and less substantial underfoot than composite. Some people love the cooler, springier feel. Others miss the more solid sense of composite.
For pool decks specifically in our climate, premium PVC is hard to beat. The combination of cool-touch performance, chemical resistance, and freeze-thaw durability checks every box that matters around a New Hampshire pool.
What About Concrete and Pavers?
A lot of New Hampshire pool decks are still built with poured concrete or concrete pavers. Both have real strengths (durability, classic look, lower cost per square foot for basic installations) but real weaknesses for the cool-underfoot question.
Standard gray concrete in direct sun gets hot. Light-colored or specifically formulated cool-deck coatings help significantly and are worth considering if you’ve already got concrete you don’t want to replace. Stamped concrete in darker colors gets very hot.
Pavers vary widely. Light-colored porcelain pavers and travertine stay reasonably cool. Dark concrete pavers and traditional brick can get extremely hot. Travertine in particular is popular around pools because of its natural cooling properties and traction when wet, though it requires sealing in our freeze-thaw climate to prevent damage over time.
Maintenance differs too. Concrete and pavers need periodic sealing, can crack with frost heave if the substructure isn’t engineered for New Hampshire winters, and grout lines in paver installations need occasional attention.
What About Natural Wood?
Pressure-treated pine, cedar, and tropical hardwoods like ipe are the classic deck materials. Around a pool in Merrimack, they’re a tough sell.
Wood is fairly cool underfoot, which is the good news. The bad news is everything else. Constant moisture exposure from pool splashing accelerates rot and degradation. Chlorine and saltwater are hard on wood finishes. The freeze-thaw cycle works moisture deep into the grain. Realistic maintenance for a wood pool deck in New Hampshire is annual or biannual sealing, regular board replacement, and accepting that the deck will need significant refurbishment every 5 to 7 years.
If you love wood and accept the maintenance, ipe and other dense tropical hardwoods perform better than pine or cedar. But for most pool owners, the ongoing upkeep makes wood the wrong choice.
Pulling It Together for Merrimack Pool Owners
| Material | Heat Performance | Maintenance | Pool Chemical Resistance | Lifespan in NH |
| Premium cool-touch PVC | Excellent | Very low | Excellent | 30+ years |
| Cool-touch composite | Good (with right product) | Low | Very good | 25-30 years |
| Standard composite | Moderate | Low | Very good | 25-30 years |
| Light porcelain pavers | Good | Moderate | Excellent | 30+ years |
| Travertine | Very good | Moderate (sealing) | Good | 25-30 years |
| Concrete with cool coating | Good | Moderate | Good | 20-25 years |
| Natural wood | Good | High | Poor | 10-15 years |
How to Actually Choose
If cool-underfoot performance is your top priority (and around a pool, it usually should be), premium PVC decking is the clearest answer. The cool-touch technology in today’s best products genuinely works, and the chemical and moisture resistance is unmatched.
If budget is a bigger factor, look at composite specifically engineered for heat reduction, in a light color. You’ll get most of the cool-touch benefit at a meaningfully lower price point, with the trade-off of slightly warmer peak temperatures.
If you love the look of stone or concrete, light porcelain pavers or travertine are both solid choices, with travertine offering excellent natural cooling but requiring more upkeep in our climate.
A few practical New Hampshire-specific notes. Whatever material you choose, drainage matters around a pool. Water needs to move away from the deck and away from your foundation. Substructure ventilation matters too, because trapped moisture under a pool deck is one of the leading causes of premature failure. And expansion gaps are non-negotiable in a climate that swings from 90°F in July to below zero in January.
These details are easy to overlook on a quote sheet but they determine whether your pool deck is still performing beautifully in 20 years.
Ready to Build a Pool Deck That Actually Stays Cool?
Choosing the right pool deck material is one of those decisions where seeing samples in person, feeling the surface temperature in real sun, and talking through your specific pool layout makes a huge difference.
Villandry Home and Outdoor Living will consult you on the best materials for your pool deck and can help you weigh cool-touch performance against budget, aesthetics, and long-term durability for your Merrimack property. Call us at +1 603 437 2750 to start planning your pool deck.