Rainteck

Water Diversion. Active Ventilation.

Under deck drainage system for existing decks: dry space below, drying joists above. Divert water and promote airflow, without rebuilding your deck. 

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Move beyond passive water diversion

Our Approach

Divert The Water

Engineered Water Management

RainTeck is a below-joist water diversion system designed to capture and channel water away from your deck structure. Instead of allowing moisture to collect and compromise framing, our system moves water efficiently to a controlled drainage point, protecting the integrity of your investment from day one.
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Dry The Structure

Patented Joist Ventilation

Water diversion is only part of the solution. RainTeck integrates a patented fan system designed to actively dry the joists themselves. By increasing airflow directly at the structural level, the system reduces trapped moisture, limits long-term exposure, and helps prevent wood deterioration.
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Protect The Investment

Long-Term Structural Performance

Moisture is the primary cause of deck failure. By combining water diversion with active structural drying, RainTeck helps extend the life of the framing and preserve the integrity of the deck system, delivering performance that passive systems simply can’t match.
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Patented Ventilation

Designed to Dry the Structure, Not Just Manage Water
ACTIVE DRYING

How RainTeck Stands Apart

RainTeck integrates a patented ventilation fan engineered to dry structural joists after moisture exposure. While water diversion moves rain away from the deck, ventilation addresses the moisture that remains in the framing itself.

By increasing controlled airflow at the joist level, the system reduces moisture dwell time, limits long-term exposure, and supports structural longevity. It’s a practical solution built around how decks actually perform in real-world conditions.
How It Works
Where Drainage Meets Airflow

How RainTeck Protects Your Deck

Water reaches the joists from above. RainTeck diverts that water while ventilation fans move air across the framing, accelerating drying and reducing moisture exposure where it matters most.

Water Diversion

Rain and moisture are collected and channeled away from the substructure of your deck.

Active Ventilation

Patented fans drive controlled airflow beneath the deck, actively removing moisture before it causes damage

Questions

Everything you need to know about RainTeck systems

How It Works
How does it work?

Water enters from above and gets diverted away from your deck structure. Patented ventilation fans then activate, pulling air through the space beneath your deck. This continuous airflow removes moisture before it can damage wood or corrode supports.

RainTeck systems are engineered to work with most deck designs and sizes. We assess your specific setup during the consultation process. Compatibility depends on deck height, structure type, and existing drainage patterns.
Minimal. The system is designed for durability and low upkeep. Periodic checks of fan operation and debris removal keep everything running smoothly. Most owners perform basic maintenance once or twice yearly.
Installation typically takes one to three days depending on deck size and complexity. Our team handles everything from water diversion setup to fan installation and testing. You’ll have a fully operational system before we leave.
Active drying eliminates the moisture that causes rot. By removing water before it lingers, RainTeck protects wood and structural components. This isn’t passive drainage —it’s engineered prevention.