Key Takeaways:
The primary difference between water-resistant and waterproof shade fabric is the level of coverage they provide. Waterproof, or non-permeable, shade structures don’t let any water or air pass through them, meaning they can be used in most types of weather. Water-resistant, or permeable, shade structures let some water and air through, which means they don’t ensure protection from the elements.
Water-resistant shade structures are best-suited for settings that need effective UV protection and privacy rather than complete protection from rain, such as pool decks, sports arenas and recreational areas.
Waterproof shade fabric is needed when people, equipment and furniture in an outdoor area must stay dry, or when an outdoor area is intended for year-round use. Common settings include outdoor seating areas, workspaces and walkways.
Shade structures can allow your employees, customers and clients to use outdoor areas in comfort. However, the type of shade fabric your business uses will affect the level of comfort it provides and how it can be used in outdoor settings.
Whether your priorities are rain and wind coverage, privacy or comfort during hot weather, it’s important to evaluate which shade fabric may be best for your business’s outdoor area. To make this decision, understanding the key differences between water-resistant and waterproof shade fabric is vital.
What Is a Permeable Shade Structure?
Permeable shade structures consist of a breathable, water-resistant fabric that lets air and water pass through. Made from loosely woven material, these structures are ideal for spaces where airflow and UV protection are a higher priority than rain coverage.
How Permeable Shade Structures Work
Permeable shade structures use high-density polyethylene (HDPE) mesh, which is Rachel-knitted with a lockstitch in two directions for strength. This knitted construction creates an open-weave design with small gaps, which allow air to circulate upward.
Rather than absorbing or deflecting water, the open-weave fabric allows some water to drip through during heavy rainfall, while the rest runs off the sides.
Benefits of Permeable Shade Structures
One of the main benefits of permeable shade structures is that they can keep shaded areas cool during hot weather. As hot air rises, the permeable fabric allows it to escape as cooler air replaces it.
Permeable shade structures are also:
- Fast-drying: Since the fabric allows water to pass through it or slide off the sides, rain doesn’t pool on top.
- Breathable: Because wind can flow through the fabric, it reduces the structural load.
- UV-protective: HDPE shade structures can protect against up to 97% of UV rays, reducing the risk of sunburn.
- Lightweight: Thanks to its lightweight nature, water-repellent fabric doesn’t need to be installed on as strong a structure as heavier waterproof material does.
- Long-lasting: HDPE has a life expectancy of 12 years with proper maintenance.
Permeable Shade Structure Limitations
While permeable shade structures are great in the right setting, they’re not necessarily perfect in every situation. Since HDPE doesn’t completely block rain from passing through, permeable shade structures aren’t ideal when staying dry is a priority, such as when dining outdoors. The same holds for any other setting where guests, equipment, food or furniture require comprehensive protection from the rain.
What Is a Non-Permeable Shade Structure?
A non-permeable shade is made from a waterproof fabric, meaning it prevents any water from passing through it. This makes it an ideal full-coverage option for many weather conditions.
How Non-Permeable Shade Structures Work
Non-permeable shade structures use sealed membrane fabrics that make them waterproof. Whether they’re made from PVC, PTFE or Novashield, these fabrics are engineered as a continuous barrier that doesn’t provide any gaps for water to pass through. Heat-welded or sewn-and-sealed seams ensure a watertight barrier, which causes rainwater to bead up and run off the side.
Benefits of Non-Permeable Shade Structures
The primary benefit of a non-permeable shade structure is its waterproof nature. Installed correctly, a waterproof shade structure can keep the area below it completely dry, even during heavy rain. This increases how often an outdoor area can be used and protects outdoor furniture and equipment throughout the year.
Waterproof shade structures also reduce the maintenance demand. Since water runs down the fabric, it carries debris such as leaves and dirt with it, reducing the amount of debris that accumulates on top of the structure and the required cleaning frequency. These benefits make non-permeable shade structures a great choice for any outdoor setting used during all seasons and many weather conditions.
High-quality waterproof shade structures often enjoy a long life span when properly cared for, too. Novashield structures can last at least 15 years, and PVC structures can last two decades or more. PTFE structures can last 25 years or longer.
Non-Permeable Shade Structure Limitations
For non-permeable shade fabric to offer effective rain coverage, it must be installed correctly. This means that it must be:
- Sloped so that rain can run off the sides and prevent pooling that damages the fabric.
- Installed high enough so that air can circulate underneath, allowing hot air to escape and cool air to replace it.
- Stretched tight to prevent it from flapping in the wind and wearing down faster than it should.
- Installed on a structure that’s strong enough to support the heavier fabric.
Water-Resistant vs. Waterproof Shade Structures at a Glance
Water-resistant and waterproof shade structures differ in a few key areas:
| Water-Resistant (Permeable) | Waterproof (Non-Permeable) | |
|---|---|---|
| Fabric type | HDPE mesh | PVC, PTFE, Novashield |
| Rain protection | Deflects most rain | Blocks 100% of rain |
| Airflow | Breathable — air passes through | Sealed — no airflow through fabric |
| UV protection | Up to 97% | Up to 97% (varies by membrane) |
| Best for | Playgrounds, sports courts, open seating | Dining areas, walkways, cafeterias |
| Life span | Up to 12 years | 15-30+ years |
| Drainage required? | No — water passes through | Yes — must be sloped |
| Heat buildup risk | Low | Higher without proper installation height |
Where Does Each Type Work Best?
Some settings are better-suited to waterproof shade structures than water-resistant shade coverings, and vice versa.
Since they let some water and light through, water-resistant shade coverings are generally better for settings that prioritize privacy or are typically only used in moderate weather. These settings include outdoor pool decks, sports arenas, playgrounds and recreational areas.
Waterproof shade coverings are best for settings that require complete rain coverage, such as:
- Outdoor restaurants
- School cafeterias
- Covered walkways
- Transit shelters
- Building entrances
Get a Custom Quote From USA SHADE
By choosing the ideal type of fabric for your shade structure, you can help ensure that visitors fully enjoy your business’s outdoor area.
At USA SHADE, we have over three decades of experience helping business owners choose the right shade structure for them, before designing and delivering it. What’s more, our warranties provide peace of mind that your business will benefit from the shade structure for many years to come.
To find out more about how we can deliver the right shade covering for your business, contact us today and receive your custom quote.
