Blue Tarps vs. Shrink Wrap for Weeks of Rain: Choosing for Water Intrusion Control

Blue Tarps vs. Shrink Wrap for Weeks of Rain: Choosing for Water Intrusion Control

Imagine this scenario: A storm damages your roof, and the forecast shows rain for the next seven days. Your roofer is booked for six weeks. Your priority just became singular: water intrusion control.

This is a long-term battle, and your choice of temporary protection will determine whether you win or lose. When you’re facing weeks of relentless rain, a blue tarp isn’t just a bad choice; it’s a guarantee of failure.

The Failure of Tarps in Persistent Rain

A blue tarp is a “water-resistant” patch. It is not waterproof, and it’s not designed to handle continuous, wind-driven rain.

Here’s how it fails:

  1. They Flap and Lift: A tarp is held down by weight (sandbags) or point-fasteners (nails). Wind and rain will get under the edges, causing the tarp to flap. Every “flap” is a pump that draws in more water and abrasively scrubs your shingles.
  2. They Pool and Channel: Tarps are not taut. They will sag, creating “bird baths” of heavy water. This pooling water will find every nail hole, seam, and micro-tear and drip directly onto the damaged roof below. Worse, it will channel water in unpredictable ways, often away from your gutters and over the side of your house, damaging siding and foundations.
  3. They Leak: The material itself will degrade under UV light and stress. Wind-driven rain will force water through the tarp’s woven fabric. The nail holes used to secure it are… holes. They will leak.

The result: After weeks of rain, you’ll find your attic is soaked, insulation is ruined, and you have a severe mold problem. The tarp provided a false sense of security.

The Superiority of Shrink Wrap for Water Intrusion

Professional shrink wrap is a “waterproof” enclosure. It’s a fundamentally different technology designed for this exact scenario.

  1. It Forms a Seamless Membrane: The wrap is heat-shrunk drum-tight. There is no flapping. There is no lifting. It creates a single, taut, seamless layer of 12-mil plastic over your entire roof.
  2. It Creates a True Watershed: Because it’s taut, it has no sags or pools. It follows the natural pitch of your roof, shedding water exactly as a new roof would—directly into your gutters. It perfectly manages water flow, protecting your foundation and siding.
  3. It is 100% Waterproof: The material is non-porous. Wind-driven rain cannot pass through it. The wrap is secured by a perimeter strapping system outside the damaged area, meaning there are no new nail holes in your roof deck.
  4. It Lasts: Our UV-inhibited wrap is warrantied for a full year. It will easily handle weeks (or months) of persistent rain, sun, and wind, keeping your property bone-dry until permanent repairs can be made.

The Choice is Clear

When you’re fighting a short, 24-hour storm, a tarp might be a passable (though risky) gamble.

When you are facing weeks of rain, it’s not a gamble; it’s a certainty. A tarp will fail, and the water intrusion will be catastrophic. A professional shrink wrap enclosure is the only solution that guarantees a dry interior, stops mold before it starts, and protects the value of your property.

[Don’t let a roof leak turn into a mold remediation. Contact StormWrappers for a 100% waterproof shrink wrap solution.]

Facebook
Twitter
LinkedIn
Pinterest
Email