Choose the Right Heavy-Duty Tarp: RAINDEWAY 8 Mil 20x20 Review
When selecting a large tarp for outdoor protection, thickness (measured in mils) and material are critical. The RAINDEWAY 8 Mil Thick, 20x20 Feet tarp is a UV-resistant poly cover designed for multipurpose use, featuring reinforced edges and metal grommets for secure tie-downs. Understanding these specs helps you match the tarp to your specific project, whether covering equipment, lumber, or a boat.
Key Considerations Before Buying
- Thickness matters: An 8 mil tarp is considered medium-duty, ideal for moderate protection against sun and rain but not for heavy abrasion or sharp objects. Consider if your use involves rough surfaces or extreme weather that might require a thicker (10-12 mil) tarp.
- Size and coverage: The 20x20 feet dimension is generous for covering large items like stacked firewood, machinery, or a small camper. Ensure you measure your item and account for extra material to secure the tarp with ropes or bungees.
- UV resistance: This tarp is labeled UV resistant, which is vital for long-term outdoor exposure. However, even UV-treated poly tarps degrade over time, so check if the treatment meets your expected lifespan (typically 1-3 years depending on sun intensity).
What Our Analysts Recommend
Quality tarps in this category should have reinforced hems with double-stitched seams and rust-resistant metal grommets spaced every 18-24 inches. The RAINDEWAY model includes these features, but also inspect the poly material for consistent thickness and a smooth finish without wrinkles, which can indicate manufacturing flaws. For heavy wind or snow loads, look for tarps with additional cross-weave reinforcement.
Tarps Market Context
Market Overview
The tarp market is saturated with cheap, thin poly tarps (often 4-6 mil) that tear easily or degrade in sunlight within months. Consumers are increasingly seeking mid-range options like 8 mil tarps that balance cost and durability for general outdoor use. The RAINDEWAY 20x20 fits this niche, competing with brands like Classic Accessories and TarpLift.
Common Issues
Common problems include grommets pulling out under stress, seams splitting after a few months of sun exposure, and UV resistance claims that don't hold up. Some tarps also have a strong chemical smell that fades slowly. For the RAINDEWAY, the 8 mil thickness helps mitigate tearing, but users should still avoid sharp edges and use proper tie-down methods.
Quality Indicators
Look for tarps with at least 8 mil thickness, double-stitched hems, and reinforced corner patches. The grommets should be brass or zinc-plated steel (not plain steel) to resist rust. A UV stabilizer additive is a must; this is often indicated by a 'UV resistant' label, but third-party tests or user reviews offer real-world proof.
Review Authenticity Insights
Grade B Interpretation
The Grade B authenticity rating with a 10% estimated fake review rate suggests that while most reviews are genuine, a small minority may be incentivized or fake. This is common for popular Amazon products, but the 4.89 average rating (adjusted to 4.60) still indicates strong real-world satisfaction. The 10% fake rate is relatively low, so you can trust the overall positive sentiment.
Trust Recommendation
Focus on the detailed reviews that mention specific uses (e.g., covering a boat, protecting a garden) and long-term durability. Ignore short, vague five-star reviews. The adjusted rating of 4.60 is a more realistic benchmark—still excellent. Consider that the product is relatively new or has a small review base, which can inflate ratings.
Tips for Reading Reviews
For tarps, look for reviews that describe exposure to sun, rain, or wind over several months. A one-day review is less useful. Check for photos showing grommet condition, seam integrity, and color fading. Also, note if multiple users mention the same issue (e.g., grommets rusting) to gauge consistency.
Expert Perspective
The RAINDEWAY 8 Mil 20x20 tarp appears to be a solid mid-range option for consumers needing a large, UV-resistant cover. The high adjusted rating (4.60) and low fake review rate (10%) indicate genuine customer approval, likely due to its reliable thickness and reinforced edges. However, it's not a heavy-duty tarp—use it for moderate protection, not for sharp debris or extreme weather. The 8 mil thickness is a sweet spot for value, but those needing rugged durability should consider a 12 mil or canvas tarp.
Purchase Considerations
Weigh the cost against your specific needs: if you need a tarp for a single season or light duty, this is a great buy. For permanent outdoor use in harsh climates, invest in a thicker or coated tarp. Also, check that the 20x20 size fits your space—larger tarps can be unwieldy in high winds without proper anchoring.
Comparing Alternatives
Compare with similar 8 mil tarps from brands like TarpLift or ShelterLogic, which may offer different sizes or grommet spacing. For heavy-duty needs, explore 12 mil options or canvas tarps that breathe to prevent moisture buildup.
