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Best Patio Covers & Tarps for Spring Storms (2026 Guide)
Spring storms are when patio covers and tarps earn their keep — protecting furniture, grills, woodpiles and outdoor gear from wind-driven rain and debris. This guide evaluates Trademark Supplies' most popular tarps across sizes and thicknesses, focusing on waterproofing, construction (grommets and hem reinforcement), material thickness, and real-world durability. You’ll learn which tarp fits heavy-duty jobs, which is the best budget choice, and how to match tarp specs to your patio or patio furniture. Products were selected from the same trusted line to make apples-to-apples comparisons easy for 2026 buyers.
Quick Answer
For broad protection in spring storms we recommend the Large Waterproof Tarp (20' x 35') by Trademark Supplies (ASIN B07JJWK5ZN) as the best overall — it pairs heavy-duty construction, reinforced hems and rust-proof grommets for reliable coverage. For budget-minded buyers pick the 12' x 20' 10 Mil option (ASIN B015RVUPVU); for the best value (size-to-price) get the 16' x 20' 2-pack (ASIN B07FW851FK).
Our Top Picks
Quick Comparison
Select 2-3 products to compare side-by-side
| Compare | Product | HandleSmith Score | Price Tier | Key Feature | Best For | Action |
|---|---|---|---|---|---|---|
20' x 35' 5 Mil Tarp
|
Premium | Reinforced hem with rope | Large patio covers & equipment | Check Price | ||
12' x 20' 10 Mil Tarp
|
Budget | 10 mil heavy-duty poly | High-strength, smaller covers | Check Price | ||
16' x 20' 2-Pack 5 Mil
|
Mid-Range | Two tarps in one purchase | Decks, furniture sets, multi-use | Check Price | ||
30' x 50' 5 Mil Tarp
|
Premium | Very large coverage area | Commercial or extra-large patios | Check Price | ||
12' x 20' 2-Pack 10 Mil
|
Budget | Double pack of 10 mil tarps | Multiple smaller projects | Check Price | ||
18' x 24' 10 Mil Tarp
|
Mid-Range | Balance of size and thickness | Medium patios & equipment | Check Price | ||
16' x 20' 5 Mil Tarp
|
Mid-Range | Lightweight large tarp | Temporary patio covers & ground sheets | Check Price |
1. Large Waterproof Tarp - Heavy Duty 5 Mil Thick Poly Tarpaulin Ideal for Canopy Tents, Boats, RV or Pool Covers - Multipurpose Protective Tarps with Grommets for Indoor and Outdoor Use | 20' x 35'
This 20' x 35' 5-mil tarp is built to cover large patios, grills and stored equipment while balancing weight and maneuverability. It includes reinforced hems and rust-proof grommets every 36" for tie-downs; customers praise its waterproofing and sizeable coverage though opinions vary on long-term tear resistance.
Key Specs
- Size: 20' x 35'
- Material: Poly tarpaulin, 5 mil thickness
- Grommet spacing: every 36"
- Features: UV-resistant, mildew-proof, rope-reinforced hem
Pros
- Excellent waterproofing for heavy rain
- Very large coverage — suits patios and RVs
- Reinforced hem and rust-proof grommets for secure tie-downs
Cons
- 5 mil material may feel thin for some heavy-duty uses
- Mixed reports on long-term tear resistance in high winds
Best For: Large patio covers & equipment
Check Latest Price on Amazon2. Large Waterproof Tarp - Heavy Duty 10 Mil Thick Poly Tarpaulin Ideal for Canopy Tents, Boats, RV or Pool Covers - Multipurpose Protective Tarps with Grommets for Indoor and Outdoor Use | 12' x 20'
The 12' x 20' 10-mil tarp is a thicker, heavier option designed for tougher conditions — better resistance to punctures and tearing than lighter tarps. Buyers like the solid waterproof performance and perceived durability for demanding uses, making it a standout budget pick for heavy-duty coverage in smaller spaces.
Key Specs
- Size: 12' x 20'
- Material: Poly tarpaulin, 10 mil thickness
- Grommet spacing: every 36"
- Features: UV-resistant, mildew-proof
Pros
- Thicker 10 mil material resists punctures better
- Good waterproof protection and solid feel
- Affordable option for heavy-duty needs
Cons
- Heavier weight makes handling and storage bulkier
- Grommet spacing at 36" may limit tie-down points for certain layouts
Best For: High-strength, smaller covers
Check Latest Price on Amazon3. Large Waterproof Tarp - Heavy Duty 5 Mil Thick Poly Tarpaulin Ideal for Canopy Tents, Boats, RV or Pool Covers - Multipurpose Protective Tarps with Grommets for Indoor, Outdoor Use | 16' x 20' 2 Pack
This 2-pack of 16' x 20' 5-mil tarps is a practical mid-range choice for homeowners needing multiple covers. The pair offers good value and broad utility for patio furniture or garden equipment; waterproofing and grommeted hems are reliable, but thicker alternatives exist for extreme conditions.
Key Specs
- Size: 16' x 20' (two tarps)
- Material: Poly tarpaulin, 5 mil thickness
- Grommet spacing: every 36"
- Features: UV-resistant, mildew-proof, rope-reinforced hem
Pros
- Two tarps expand usage options and value
- Reliable waterproofing for spring storms
- Reinforced hems and rust-proof grommets
Cons
- 5 mil thickness may not suit the most demanding applications
- Some users report tearing under prolonged wind stress
Best For: Decks, furniture sets, multi-use
Check Latest Price on Amazon4. Large Waterproof Tarp - Heavy Duty 5 Mil Thick Poly Tarpaulin Ideal for Canopy Tents, Boats, RV or Pool Covers - Multipurpose Protective Tarps with Grommets for Indoor and Outdoor Use | 30' x 50'
The 30' x 50' tarp provides massive coverage for large patios, boat storage or commercial needs. It keeps out rain and UV exposure well and features rope-reinforced hems with grommets, but the 5-mil material can be borderline for sustained heavy loads or high-wind scenarios without additional support.
Key Specs
- Size: 30' x 50'
- Material: Poly tarpaulin, 5 mil thickness
- Grommet spacing: every 36"
- Features: UV-resistant, mildew-proof, rope-reinforced hem
Pros
- Huge footprint covers large structures and equipment
- Good waterproof and UV protection
- Reinforced hems for secure tie-downs
Cons
- 5 mil thickness may be thin for long-term heavy-duty exposure
- Large sheets can be difficult to manage alone
Best For: Commercial or extra-large patios
Check Latest Price on Amazon5. Large Waterproof Tarp - Heavy Duty 10 Mil Thick Poly Tarpaulin Ideal for Canopy Tents, Boats, RV or Pool Covers - Multipurpose Protective Tarps with Grommets for Indoor, Outdoor Use | 12' x 20' 2 Pack
This 2-pack of 12' x 20' 10-mil tarps delivers heavy-duty coverage for several smaller jobs or staggered use locations. The thicker poly offers better tear resistance and strong waterproofing, making it a cost-effective choice when you need more than one durable tarp.
Key Specs
- Size: 12' x 20' (two tarps)
- Material: Poly tarpaulin, 10 mil thickness
- Grommet spacing: every 36"
- Features: UV-resistant, mildew-proof
Pros
- 10 mil construction resists punctures and tears
- Two tarps increase flexibility for multiple uses
- Solid waterproof protection
Cons
- Heavier and bulkier to store
- Handling two heavy tarps can be awkward for one person
Best For: Multiple smaller projects
Check Latest Price on Amazon6. Large Waterproof Tarp - Heavy Duty 10 Mil Thick Poly Tarpaulin Ideal for Canopy Tents, Boats, RV or Pool Covers - Multipurpose Protective Tarps with Grommets for Indoor and Outdoor Use | 18' x 24'
The 18' x 24' tarp pairs 10-mil thickness with a mid-large footprint, making it a strong choice for medium patios and boats. It’s praised for solid waterproof performance and a sturdy feel, though you’ll still want good tie-down plans for windy days.
Key Specs
- Size: 18' x 24'
- Material: Poly tarpaulin, 10 mil thickness
- Grommet spacing: every 36"
- Features: UV-resistant, mildew-proof
Pros
- 10 mil thickness handles tougher conditions
- Good middle-ground size for patios and RVs
- Waterproof and UV-resistant
Cons
- Bulkier than 5 mil options
- Grommet spacing may require additional anchor points for windy setups
Best For: Medium patios & equipment
Check Latest Price on Amazon7. Large Waterproof Tarp - Heavy Duty 5 Mil Thick Poly Tarpaulin Ideal for Canopy Tents, Boats, RV or Pool Covers - Multipurpose Protective Tarps with Grommets for Indoor and Outdoor Use | 16' x 20'
The single 16' x 20' 5-mil tarp is a versatile option for quick patio coverage and ground protection. It’s easy to handle and store while providing dependable waterproofing; however, it’s best suited to moderate conditions rather than continuous heavy-duty exposure.
Key Specs
- Size: 16' x 20'
- Material: Poly tarpaulin, 5 mil thickness
- Grommet spacing: every 36"
- Features: UV-resistant, mildew-proof, rope-reinforced hem
Pros
- Light and easy to handle
- Good waterproof protection for short-term use
- Affordable mid-range value
Cons
- Not as durable as 10 mil in high-wear scenarios
- May tear under sustained wind without extra reinforcement
Best For: Temporary patio covers & ground sheets
Check Latest Price on AmazonWhich One Should You Choose?
If budget is tight → choose the 12' x 20' 10 Mil option (ASIN B015RVUPVU) for solid toughness at a low price. If you need multiple covers or the best size-to-price ratio → get the 16' x 20' 2-pack (ASIN B07FW851FK). If premium coverage and easier tie-down on a large patio matter → the 20' x 35' 5 Mil tarpaulin (ASIN B07JJWK5ZN) is the best overall pick. For very large commercial or boat covers go with the 30' x 50' (ASIN B07D9V8BHG) but plan extra anchors and help for handling.
Best for Specific Scenarios
- Covering patio furniture sets: 16' x 20' 2-pack (B07FW851FK) because two tarps let you cover separate groupings and reduce seam stress.
- Protecting a small boat or grill: 12' x 20' 10 Mil (B015RVUPVU) because 10 mil thickness better resists punctures and wind abrasion.
- Large RVs, decks or multiple items: 20' x 35' 5 Mil (B07JJWK5ZN) because the large footprint and reinforced hems simplify covering big targets.
Frequently Asked Questions
What does 'mil' mean and which should I choose?
Mil is a thousandth of an inch and indicates thickness. Choose 5 mil for lightweight, temporary coverage and easy handling; pick 10 mil for better tear resistance and frequent or heavy-duty use.
How do I prevent a tarp from tearing in strong winds?
Use multiple tie-down points, add extra anchors at midpoints, avoid leaving the tarp loose (wind flapping causes tears), and run straps through reinforced grommets or over a batten to distribute load. Consider a thicker (10 mil) tarp for windy areas.
Can I use these tarps year-round outdoors?
These poly tarps are UV-treated and mildew-resistant, so they can be used seasonally outdoors. For continuous year-round exposure expect some wear; check seams and grommets periodically and replace if you notice thinning or frequent tears.
How We Selected These Products
Our recommendations are based on data-driven analysis: we evaluated 100770+ products across 13951+ brands using a composite scoring system that weighs rating (40%), review volume (30%), price value (20%), and demand signals (10%). Every product is ranked by data, not opinions.
Last updated: May 23, 2026
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HandleSmith Score is our editorial ranking based on a composite analysis of product quality, value, and verified customer sentiment. Click through to Amazon for current pricing, availability, and live customer reviews.