Whether it’s workwear, horse blankets, outdoor furniture, or tarps, waterproofing fabric protects them from moisture and extends their life. With the right waterproofing approach, you can keep your fabrics in great shape – no matter the weather.
Why should you waterproof fabric?
Waterproofing will make your fabrics more durable, weather-resistant, and easy to clean. Here’s why it’s worth considering.
- Protection from the elements: Waterproofing provides an extra layer of protection that keeps moisture out. This helps prevent mold, mildew, and rot, making your items last longer.
- Added durability: Waterproofing doesn’t just keep water at bay. It also makes your items more resilient against dirt, dust, and grime.
- Easier to clean: Dirt and debris won’t penetrate the fibers as easily, so a quick wipe or shake is often all you need.
Types of Fabric Waterproofing Methods
Whether you’re looking for a quick fix for everyday items or something more durable for heavy-duty fabrics, knowing the right method will make all the difference.
Spray-On Treatment
Spray-on treatments are one of the most convenient ways to waterproof your fabric. These aerosol sprays are designed for easy application – just spray, let it dry, and your fabric is ready to go.
They’re perfect for fabrics like horse blankets, jackets, or cushions that need occasional waterproofing.
Pros:
- Quick and easy application: Ideal for those who want a fast, no-fuss solution.
- Versatile: Can be used on a wide range of fabrics, from workwear to outdoor furniture and horse blankets.
Cons:
- Needs reapplication: The waterproofing effect will wear off over time, especially after exposure to rain or heavy use.
- Not the most durable: While effective for general use, it may not hold up well on fabrics that see a lot of wear and tear.
Fabric Sealant
When you need a serious waterproofing solution for outdoor furniture, gear, or heavy-duty applications, fabric sealants are the way to go.
These sealants create a strong, impenetrable barrier that withstands the harshest elements. They’re a great choice for tarps, tents, or patio cushions that see heavy rain or snow.
Pros:
- Extremely durable: Provides long-term waterproof protection that can handle heavy rain, snow, or UV exposure.
- Great for outdoor use: Best for fabrics that live outside year-round, like patio furniture or equipment covers.
Cons:
- More time-consuming: Applying a fabric sealant requires careful preparation and more drying time.
- May alter texture: Sealants can make fabrics feel stiffer or less breathable, which may not be ideal for all applications (like horse blankets, which need to maintain their softness for your horse’s comfort).
Wax Coating
A wax coating is a fantastic, environmentally friendly option for heavy-duty fabrics like canvas or cotton. This method involves rubbing or melting a special wax onto the fabric’s surface, creating a thick, protective layer that repels water.
Wax coating is best for those who want long-lasting protection on fabrics like workwear and horse blankets that are exposed to outdoor elements or handled rough.
Pros:
- Long-lasting: Wax provides a tough, durable finish that will withstand heavy use and the elements.
- Great for rugged materials: Perfect for fabrics that need extra protection, like workwear, horse blankets, or canvas gear.
Cons:
- Labor-intensive: Applying wax can be time-consuming and requires more effort than a simple waterproofing spray.
- Appearance: Wax can alter the look and feel of the fabric, giving it a stiffer, shinier appearance that some people might not prefer.
Linseed Oil
For those seeking another eco-friendly alternative, using linseed oil offers a way to waterproof fabric without synthetic chemicals. Linseed oil has been used for centuries to protect natural fibers, though it’s not as commonly used today as synthetic methods.
Natural methods are ideal for those who prioritize sustainability but be prepared for frequent reapplication and some limitations in durability.
Pros:
- Eco-friendly: A great choice for those looking to avoid harsh chemicals.
- Natural look: It doesn’t drastically change the appearance of the fabric like a wax or spray might.
Cons:
- Limited durability: Linseed oil doesn’t last as long as synthetic options, so you may need to reapply frequently.
- Can stain or discolor fabric: Natural oils may alter the fabric’s color or texture and may take a while to fully dry.
Step-by-Step Guide: How to Waterproof Fabric
Whether you’re treating horse blankets, cushions, or workwear, here are a few simple ways to make your fabrics waterproof.
Preparation
Before applying any waterproofing treatment, preparation is vital so the waterproofing product properly adheres to the fabric.
Clean the fabric.
- Start by thoroughly cleaning the fabric to remove any dirt, stains, or debris.
- If you’re waterproofing outdoor cushions or horse blankets, wash them with a gentle detergent and let them dry completely.
Test a small area.
Before applying your waterproofing solution to the entire piece, always test a small, inconspicuous area first. This is especially important when working with natural fibers or using waxes and oils since some products may slightly alter the fabric’s color or texture.
If everything looks good after drying, you’re ready to move forward.
Application
Once your fabric is prepped, it’s time to apply your chosen waterproofing method.
Always follow any manufacturer’s instructions for the product you’re using. However, here’s a quick breakdown of the application process for each fabric waterproofing method.
Spray-On Treatment
Spray-on waterproofing treatments are the quickest and easiest option for most fabrics.
Step 1: Spray the fabric.
- Hold the waterproofing spray can about 6-8 inches away from the fabric and spray in a smooth, even motion.
- Cover the entire surface without saturating any one area too heavily.
Step 2: Let the fabric dry completely.
- This usually takes 24-48 hours (depending on the product).
- Keep the fabric in a well-ventilated area during this time.
Step 3: Add a second coat (optional).
- For added protection, apply a second coat after the first has dried.
Fabric Sealant
Fabric sealants are ideal for outdoor furniture and other heavy-use fabrics.
Step 1: Apply the sealant evenly.
- Use a brush or roller to spread the sealant across the fabric.
- Work in small sections so coverage is even and doesn’t oversaturate any one area.
Step 2: Allow the first coat to dry.
- Follow the product instructions for drying time (typically 24-48 hours).
- Make sure the fabric stays in a well-ventilated area during this period.
Step 3: Apply a second coat (if needed).
- A second coat will provide extra protection for fabrics exposed to heavy weather or frequent use.
- Make sure the first coat is fully dry before applying additional layers.
Wax Coating
Waxing your fabric takes a bit more effort, but it’s an excellent option for heavy-duty materials.
Step 1: Rub the wax onto the fabric.
- Use firm, even strokes to apply the wax.
- Be sure to cover the entire surface and check corners or seams for coverage.
Step 2: Apply heat to the waxed fabric.
- Use a heat gun (or a hairdryer on high heat) to melt the wax into the fabric. This allows the wax to penetrate the fibers to create a water-resistant barrier.
Step 3: Let it cool and harden.
- Once the wax cools, the fabric may feel stiffer but will soften with use.
Linseed Oil
For an eco-friendly option, consider using a mixture of linseed oil and beeswax to waterproof your fabric.
Step 1: Mix equal parts of linseed oil and beeswax.
- Heat it gently until the mixture is fully melted and combined.
Step 2: Apply the mixture to your fabric with a brush.
- Make sure to spread it evenly across the surface.
- Apply a thin, uniform layer for the best results.
Step 3: Let the fabric cure for several days.
- Make sure to dry in a well-ventilated area.
Test the Waterproofing
After the treatment has dried, test the waterproofing by sprinkling a small amount of water on the fabric.
If the water beads up and rolls off, the treatment has worked. If it soaks in, you will need to reapply another coat.
How to Maintain Waterproof Fabrics
Waterproofing your fabric is just the first step. Regular maintenance is important to provide long-lasting protection.
Reapply Treatments as Needed
Over time, waterproof coatings naturally wear off, especially if the fabric is exposed to frequent rain, sun, or washing.
- To keep your items water-resistant, it’s important to reapply treatments every 6-12 months, depending on how often the fabric is used or exposed to the elements.
- For spray treatments, reapply every 6 months if the fabric is outdoors year-round.
- You may only need to touch up high-use areas once a year for waxed fabrics.
Tip: If you notice that water no longer beads up on the fabric and instead starts soaking in, it’s time for a reapplication.
Store Waterproof Items Properly
Proper storage is essential for maintaining waterproof fabrics, especially during off-seasons. Even waterproofed fabrics are susceptible to mold and mildew if stored damp or in poorly ventilated spaces.
Tip: Make sure your items are completely dry before storing them. Store them in a cool, dry place with good air circulation, and avoid packing them tightly to allow airflow.
Check for Cracks or Wear After Heavy Use
Look for signs of flaking, cracking, or thinning in the coating, which will lead to water penetration.
Tip: Pay extra attention to seams, corners, and high-wear areas since these are the most prone to damage.
Fabric-Specific Considerations
Different fabrics require different waterproofing approaches, and understanding how each fabric responds to treatments will help you choose the right method for your needs.
Cotton
Cotton is a breathable, soft fabric commonly used for everything from shirts to lightweight outdoor covers. However, cotton has one major drawback: It easily absorbs water. This means it requires more frequent waterproofing treatments to keep it protected.
Best Waterproofing Method
Spray-on treatments or natural wax mixtures are ideal for cotton. They create a barrier that repels moisture without weighing down the fabric.
However, since cotton tends to absorb water quickly, you’ll need to reapply the treatment more often (especially after washing or extended exposure to rain).
Tip: Always let cotton dry completely before applying waterproofing. If the fabric is still damp, the treatment’s effectiveness will be reduced.
Canvas
Canvas is a tough, durable fabric used in everything from tarps and horse blankets to backpacks to workwear. It’s often exposed to harsh conditions, so it needs reliable protection to maintain its durability.
Best Waterproofing Method
A wax coating is perfect for canvas. Rubbing the wax into the material and then melting it with heat creates a long-lasting, water-resistant barrier that will withstand the wear and tear of outdoor life.
Tip: Canvas items that receive heavy use benefit from regular touch-ups, especially in areas with the most friction or exposure (like corners and seams).
Outdoor Furniture
Fabrics used on outdoor furniture are designed to withstand the elements. However, constant exposure to sun, rain, and moisture will eventually wear down even the most durable outdoor fabrics. Heavy-duty waterproofing is the best way to protect these items and extend their lifespan.
Best Waterproofing Method
A high-quality spray or fabric sealant works well on outdoor furniture fabrics. These sprays and sealants provide an invisible shield that repels water while still allowing the fabric to breathe, so your cushions and umbrellas stay dry without becoming stiff or uncomfortable.
Tip: Reapply waterproofing spray treatments every few months, especially after a heavy storm or if the fabric has been cleaned.
Fabric Waterproofing Frequently Asked Questions
How do you make regular clothes waterproof?
A spray-on waterproofing treatment is the best way to waterproof regular clothes. Spray-on treatments are ideal because they maintain the fabric’s breathability and flexibility.
Look for sprays labeled for use on clothing so they don’t alter the fabric’s feel. These sprays work well for synthetic fabrics like polyester and natural materials like cotton.
How do you waterproof your boots?
Read our guide, Cleaning and Waterproofing Your Workboots, for help with your boots.
How do you make a fabric sofa waterproof?
Waterproof sprays specifically designed for furniture are the best option for a fabric sofa. These sprays protect against spills and make the fabric resistant to stains and dirt.
When applying, make sure the sofa fabric is clean and dry, then evenly coat all exposed surfaces. A second layer may be necessary for high-traffic areas (like seat cushions). For long-term protection, reapply the treatment every few months.
What is the best natural waterproof material?
The best natural waterproof material is waxed cotton. It offers excellent water resistance and is made by applying beeswax or paraffin wax to cotton fabric. Additionally, lanolin-treated wool is naturally water-repellent and often used in outdoor clothing.
For those looking for sustainable waterproofing options, linseed oil and beeswax mixtures can also be used to treat fabrics and provide natural waterproofing.
Stay Dry, Stay Prepared
Whether you choose a quick spray treatment or a heavy-duty sealant, with proper maintenance, your waterproofed items will withstand rain, spills, and outdoor exposure to stay protected for the long haul.
