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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).

Quick Comparison

Select 2-3 products to compare side-by-side

Product comparison table
Compare Product HandleSmith Score Price Tier Key Feature Best For Action
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' 20' x 35' 5 Mil Tarp
4.9
Premium Reinforced hem with rope Large patio covers & equipment Check Price
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' 12' x 20' 10 Mil Tarp
4.9
Budget 10 mil heavy-duty poly High-strength, smaller covers Check Price
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 16' x 20' 2-Pack 5 Mil
4.9
Mid-Range Two tarps in one purchase Decks, furniture sets, multi-use Check Price
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' 30' x 50' 5 Mil Tarp
4.9
Premium Very large coverage area Commercial or extra-large patios Check Price
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 12' x 20' 2-Pack 10 Mil
4.9
Budget Double pack of 10 mil tarps Multiple smaller projects Check Price
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' 18' x 24' 10 Mil Tarp
4.9
Mid-Range Balance of size and thickness Medium patios & equipment Check Price
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' 16' x 20' 5 Mil Tarp
4.9
Mid-Range Lightweight large tarp Temporary patio covers & ground sheets Check Price
0 products selected

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'

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'
4.9/5 HandleSmith Score · editorially ranked

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 Amazon

2. 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'

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'
4.9/5 HandleSmith Score · editorially ranked

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

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3. 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

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
4.9/5 HandleSmith Score · editorially ranked

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

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4. 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'

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'
4.9/5 HandleSmith Score · editorially ranked

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

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5. 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

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
4.9/5 HandleSmith Score · editorially ranked

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

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6. 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'

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'
4.9/5 HandleSmith Score · editorially ranked

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

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7. 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'

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'
4.9/5 HandleSmith Score · editorially ranked

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

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How to Choose the Right Product

How to Choose the Right Patio Cover & Tarp

Choosing a tarp for spring storms comes down to matching thickness, size and fastening details to the task. Thickness is commonly measured in mils (thousandths of an inch): 5 mil tarps are lightweight, easy to handle and fine for temporary covers, ground sheets and occasional storm protection. 10 mil tarps are noticeably tougher and resist punctures and tearing better — a smarter pick when you expect high winds, frequent use or need to cover heavier equipment. Consider the material: polyethylene tarps (the type reviewed here) are waterproof, UV-treated and mildew-resistant, which helps them last longer outdoors.

Size and fit matter. A tarp should extend well beyond the item you’re covering so you can secure it without exposing edges to wind. Check grommet spacing — these tarps use grommets every 36 inches, which works for most tie-downs but may require extra anchor points for windy locations or oddly shaped loads. Reinforced hems and rope along the edge improve tear resistance at the points where straps or bungee cords concentrate force. Installation and anchoring determine real-world performance. Use heavy-duty bungee cords, ratchet straps, or tie-down ropes and add extra anchors at corners and midpoints on large sheets. For long-term patio covers consider adding battens or framing under the tarp to prevent ponding; water pooling is a common cause of failure even on waterproof materials. Finally, think about storage and handling: thicker tarps are heavier and bulkier to fold and store but last longer — if you need frequent setup and takedown, a 5 mil may be more practical.

Budget Tiers

Budget: Lighter 10 mil and small 5 mil tarps in a compact size are affordable and useful for occasional covers or single-season use. Mid-Range: Packs and mid-to-large sizes (like 16' x 20' or 18' x 24') give a balance of durability and value — consider these if you need repeated seasonal protection. Premium: Very large tarps (20' x 35' and 30' x 50') in reinforced constructions provide maximum coverage and convenience for big jobs; choose premium when you need to protect large investments like boats, RVs or patio sets year after year. Across tiers, prioritize grommet quality, reinforced hems and material thickness for the best storm performance.

Which 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.

Reviewed by HandleSmith Editorial Team

Our team analyzes thousands of products and real customer reviews to find the best options in every category. We use data, not opinions.

Last updated: May 23, 2026

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