The only watertight composite board on the market
Unlike traditional systems that require a membrane or a separate waterproofing system beneath the deck boards, arlo hydra boards combine the decking surface and water management into a single installation.
Each board features a concealed gutter system built directly into its profile. Water that passes between the joints is captured and channeled inside the board toward the edge of the deck, where it can be drained in a controlled manner.
The result: a functional deck surface above, and a usable space beneath the structure.

An Investment Worth Every Dollar
Watertight boards are a simple yet cost-effective solution when you want to maximize the use of your patio structure. By installing arlo hydra boards, you can create a sheltered, rain-protected space beneath your deck for:
- A relaxing lounge area or BBQ space
- A spa protected from the elements
- Convenient outdoor storage

Instead of building a shed, a watertight deck becomes a cost-effective solution while maximizing the available space on your lot.
Two collections available
Mineral Collection – A high-traction texture inspired by contemporary design.
- Modern finish
- Slip-resistant texture
Essence Collection – A wood-grain texture for a warm, inviting feel.
- Rich, natural finish
- Authentic wood appearance
Patio Board Specifications
- No visible screws
- Net dimensions: 1¼″ thick × 5¾″ wide (3.17 cm × 14.6 cm)
- Can be installed on joists up to 24″ (60.9 cm) apart
| Length | Weight per Board |
|---|---|
| 16 ft (4.87 m) | 15.2 kg (33.6 lb) |
| 20 ft (6.09 m) | 19 kg (42 lb) |
| 24 ft (7.31 m) | 22.6 kg (50.4 lb) |
Fascia Board Specifications
- Net dimensions: 7/16″ thick × 12″ wide (1.09 cm × 30.48 cm)
| Length | Weight per Board |
|---|---|
| 12 ft (3.65 m) | 14.15 kg (31.2 lb) |
For more information on arlo hydra boards, check out the materials catalog by clicking the button below.
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