Waterproof Expert

Waterproofing tips & tricks

Is Wool Waterproof? How Can I Waterproof Wool?

When we think of wool, we imagine cozy sweaters, warm blankets, and comfortable socks. Wool, a natural fiber derived from sheep, has been cherished for centuries for its ability to provide exceptional insulation.

But is wool really waterproof? Let’s find out!

Is Wool Waterproof?

Wool is not naturally waterproof, but it has some built-in resistance to water. The structure of wool fibers, which have scales that overlap, helps to keep water away. Wool also contains natural oils called lanolin, which make it even better at resisting water.

Although wool can handle light moisture like mist or light rain, it’s not completely resistant to water. If it’s exposed to heavy rain or soaked in water for a long time, wool will eventually get wet and lose its insulating properties.

When wool gets wet, it also takes longer to dry compared to materials specifically designed to be waterproof.

⇒ Fun Fact:

  • Wool can absorb approximately half of its own weight in water without giving a wet sensation.

How to Waterproof Wool Garments

One of the easiest and fastest methods to waterproof wool is by applying a coating of lanolin. Lanolin is a natural substance that can enhance the water-resistant properties of wool.

Keep in mind that the lanolin coating may diminish over time or with frequent washing.

How to Use Lanolin to Make Wool Waterproof

Begin by washing the wool garment you intend to waterproof. This step is important as it helps eliminate any dirt or oils that could hinder the waterproofing process. Let your wool garment dry completely before applying the lanolin coating.

What You’ll Need: 

  • Distilled water
  • Solid lanolin
  • Emulsion block
  • Non-plastic bowl
  • Non-plastic spoon

Step 1: Dissolve the Emulsion Block

Boil about half a cup of distilled water. Add a pea-sized amount of emulsion block. Keep stirring with a spoon until the mixture becomes cloudy.

Step 2: Add Lanolin

Add half a teaspoon of lanolin to the mixture.  Stir continuously to dissolve the lanolin and ensure it is thoroughly mixed with the rest of the ingredients.

To reduce the concentration of excess lanolin in the mixture, you can use citric acid or vinegar.

Step 3: Add More Water

Add a cup of distilled water at room temperature to the mixture. Mix everything with the spoon. Pour the mixture into a washing-up bowl that comfortably fits your wool garment.

Step 4: Soak Your Wool Garment in the Mixture

Turn your wool garment inside out and put it in the washing-up bowl. Gently squeeze and move the garment to allow lanolin absorption.

Rinse the garment in cold water to remove soapiness. Squeeze out excess water to speed up drying and remove emulsifying soap. Lay the wool garment flat to dry.

Can I wear a wool coat in the rain?

Wearing a wool coat in the rain can provide some level of protection, particularly in light rain or mist. Wool has natural water-resistant properties that can help repel moisture and keep you relatively dry for a short period.

If you anticipate heavy rain, wear a plastic raincoat over your wool coat to provide additional protection.

Wool is great at keeping you warm in cold weather but not so effective in heavy rain. It’s excellent at insulation but doesn’t perform well in a downpour.

Conclusion

While wool does have some natural resistance to water, it’s not completely waterproof. It can keep out light moisture and keep you dry in certain situations. If exposed to heavy rain or completely soaked, wool will eventually absorb water.

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