Waterproof Patio Chair Covers (35") – How to Choose the Right Size & Material

If Your Outdoor Chair Keeps Getting Wet, It’s Not the Weather

If your patio chair is soaked after every rain or covered in dust within days, the issue isn’t your outdoor space—it’s your cover.

A properly sized waterproof patio chair cover (35") made from durable 600D fabric can keep your furniture dry, clean, and ready to use all year.

Instead of constantly wiping down cushions or bringing furniture indoors, the right cover does the work for you.

 

What Makes a Patio Chair Cover Truly Waterproof?

Not all “waterproof” covers perform the same.

To actually protect your furniture, three elements matter:

1️⃣ Fabric Density (The Real Protection Layer)

• 100D–300D fabric → thin, lightweight, wears out quickly
• 600D Oxford fabric → thick, tightly woven, long-lasting

👉 Higher density means better resistance to water, tearing, and UV exposure.

2️⃣ Seam Construction (Where Cheap Covers Fail)

Most covers leak at the stitching.

Low-quality covers:

• Single-stitched seams
• No sealing
• Water seeps through over time

Better covers:

• Taped or sealed seams
• Prevent water penetration at weak points

3️⃣ Water-Repellent Coating

A true waterproof cover should allow water to:

👉 Bead up and roll off—not soak into the fabric.

Not sure if 600D material is worth it?  
Read our 600D vs 300D comparison guide.

600D vs 300D Patio Chair Covers – Which One Should You Choose?

At first glance, the difference seems minor. In real use, it’s not.

👉 If your furniture stays outdoors, a 600D waterproof patio chair cover is the better long-term choice.

How to Choose the Right Size (35" Patio Chair Guide)

A cover that doesn’t fit properly won’t protect properly.

Step 1: Measure Your Chair

Measure:

• Width (widest point)
• Depth
• Height (ground to top)

Step 2: Add 2–3 Inches of Slack

Example:

• Chair height: 33"
• Recommended cover: 35"

👉 This ensures easy installation and proper airflow.

Step 3: Check What It Fits

A 35" patio chair cover typically fits:

• Lounge chairs
• Swivel chairs
• Rocking chairs
• Standard patio armchairs

👉 Slightly loose is better than too tight.

Do Patio Chair Covers Cause Mold?

This is a common concern.

👉 The answer: Only if moisture is trapped inside.

How to Prevent Mold

• Cover only dry furniture
• Choose covers with ventilation design
• Avoid sealing in moisture

High-quality covers are designed to:

• Resist mildew
• Allow minimal airflow

👉 Proper use prevents mold—not causes it.

How to Keep Patio Chair Covers from Blowing Away

Wind is one of the biggest problems with outdoor covers.

Without proper fastening:

• Covers lift
• Air gets trapped underneath
• Fabric tears

Look for These Features:

• Drawstring closure
• Elastic hem
• Click-close straps (leg attachments)

👉 A secure fit keeps your cover in place even during strong winds.

Should You Buy a Single Chair Cover or a Full Set?

It depends on your setup.

Choose a Single Chair Cover If:

• You only need to protect one or two chairs
• You’re replacing damaged covers
• Your furniture is not part of a matching set

Choose a Full Set If:

• You want to protect your entire patio layout
• You prefer a uniform look
• You want a one-time solution

👉 If you’re covering multiple pieces, a full set is often more efficient.

👉 See our full guide on 4-piece patio furniture cover sets for protecting your entire outdoor setup.