There are several key reasons to use a boat Tarpaulin when storing or trailering your vessel. First and foremost, a tarp protects the boat from environmental elements like UV radiation from the sun, rain, snow, and other forms of precipitation. UV rays can cause fading and cracking of boat surfaces over time when exposed without protection.
A tarp also shields the boat when trailed down the highway. Debris from other vehicles like rocks and tree branches poses a hazard and can dent or scratch the boat if it isn't covered. Tarping the boat helps prevent these road risks from damaging the vessel.
Keeping a boat covered when not in use or being transported is essential for maintaining its pristine condition. The tarp blocks exposure to the elements that can prematurely wear down the boat's exterior. This protects your investment and keeps the boat looking its best for seasons of enjoyment to come.
When Choosing a Boat Tarpaulin
There are several important factors to evaluate when selecting the right boat tarpaulin for your needs:
Material
Tarps are typically made from polyester or vinyl. Each has pros and cons regarding moisture resistance, durability, breathability, and more.
Weight and Thickness
Heavier, thicker tarps withstand weathering better but are less portable. Lighter tarps may not last as long. Consider your storage/trailering conditions.
Moisture Resistance
Make sure the tarp can repel water without leaking or letting condensation accumulate underneath. This prevents mold growth and corrosion on the boat's surface.
UV Protection
Look for tarp materials treated with UV inhibitors to block the sun's damaging rays. This prevents your boat from fading over time.
Breathability
A slightly Canvas Tarpaulin reduces moisture buildup compared to non-breathable vinyl. But it still needs to be fully waterproof.
Size and Fit
Measure your boat to find a tarp that adequately covers all areas without sagging or need for adjustment. Oversized is usually better than too small.
Features
Consider ease-of-use items like reinforced handles, grommets or wrap-around tie points, repair kits, storage bags, and others.
Polyester vs. Vinyl Tarps
The two most common Tarpaulin Sheet materials for boat covers are polyester and vinyl. Here's a breakdown of their characteristics:
Polyester Tarps:
More breathable material won't trap moisture underneath, reducing the chance of mold/mildew growth. They are lightweight and flexible, making them easier to transport, handle, and fit around the contours of the boat. More resistant to punctures and tears compared to vinyl. Strong fabric withstands wind and debris.
Vinyl Tarps:
Completely waterproof and will not let a single drop inside even in torrential rain. Great peace of mind. Very durable and can last 5-10 years with proper care and repairs as needed. Resists tearing. Withstands weathering and UV rays longer than polyester before showing signs of aging. The heavier weight feels more substantial and rigid, less prone to flapping in the wind. Holds its shape better.
Winterization vs. Trailering Needs
The intended purpose of a boat tarpaulin - whether for long-term winter storage or shorter-term trailering - influences certain material and design considerations.
Winter Storage Tarps
Heavier, thicker vinyl best blocks freezing temperatures, and snow/ice loads on the boat. Closely fitting is ideal for slipping under ropes/straps without sagging from heavy snow. Fewer vents reduce drafts, and better keep enclosed space above freezing.
Trailering Tarps
Lighter, more flexible polyester best withstands repeated heating/cooling cycles on/off the trailer. Slightly oversized allows ventilation to prevent moisture/mildew during intermittent stops. Additional back/bow tie-down loops secure flapping/billowing at highway speeds.
Securing Methods
The boat in water needs anchoring only, with no tie-downs. Straps around the boat hold the tarp in place. The trailered boat requires securely lashing all four corners plus the bow/stern with straps/ropes.
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