Are you unsure whether Canvas & Cotton Protector is the right waterproofing product for your tent or canvas fabric? In this article, you will learn exactly when to use this product, which materials it is designed for, and how it differs from other Ultramar protectors.
What do you use Canvas & Cotton Protector for?
Canvas & Cotton Protector is used to restore water repellency to cotton and canvas fabrics.
The product helps you to:
- Restore the water-repellent properties of cotton
- Reduce dirt adhesion
- Extend the lifespan of your tent fabric
It is the protection step in the Ultramar three-step maintenance process. This product does not clean. You only apply it to clean and completely dry fabric.
Which materials is Canvas & Cotton Protector suitable for?
Canvas & Cotton Protector is specifically developed for natural fibres, such as:
- Cotton tent fabrics
- Canvas tents
- Cotton safari and glamping tents
- Cotton trailer tents
- Canvas awnings
- Cotton roof tents
Do not use this product on synthetic fabrics such as polyester or acrylic. It must also never be used on plastic windows. Ultramar offers dedicated maintenance products for transparent plastic windows.
What is the difference between Canvas & Cotton Protector and Sprayhood & Tent Protector?
The difference lies in the material.
- Canvas & Cotton Protector is for cotton and canvas (natural fibres).
- Sprayhood & Tent Protector is for synthetic fabrics such as polyester and acrylic.
Cotton and synthetic fabrics behave differently. That is why Ultramar uses separate protection products for each material type.
If you are unsure, check the manufacturer’s label or test whether the fabric clearly absorbs moisture. Cotton absorbs water, while synthetic fabrics do so much less.
Why does cotton need a different protector than synthetic fabric?
Cotton is a natural fibre. It absorbs moisture deep into the fibres and can become heavy during rain.
Synthetic fabrics react differently. They absorb less moisture and therefore require a different type of protection.
Canvas & Cotton Protector is adapted to the structure of cotton:
- It penetrates deep into the fibres
- It makes the fabric water-repellent
- It preserves the breathable character of cotton
If you use the wrong product, the protection may be uneven or less durable. That is why identifying the material first is essential.
Does Canvas & Cotton Protector fit within the Ultramar three-step maintenance process?
Yes. Ultramar always works with three clear steps:
- Cleaning – Remove surface dirt using, for example, Sprayhood & Tent Shampoo.
- Stain Removal – Treat deeply embedded stains or stubborn contamination with Power Cleaner if necessary.
- Protection – Apply Canvas & Cotton Protector to clean and dry fabric.
If you skip the cleaning step, the protector cannot absorb evenly into the fabric. This affects both the result and the durability of the protection.
How do you know if this is the right product for your situation?
Ask yourself the following questions:
- Is my tent or fabric made of cotton or canvas?
- Is the fabric clean and completely dry?
- Do I want to restore water repellency?
If you answer “yes” to these questions, Canvas & Cotton Protector is the correct choice.
Do you have a convertible roof, boat cover or tent made of synthetic material? Then choose Sprayhood & Tent Protector instead.
What do you need for the best result?
For complete maintenance of cotton tent fabric, you typically need:
- Sprayhood & Tent Shampoo (cleaning)
- Power Cleaner (for deeply embedded stains or stubborn contamination)
- Canvas & Cotton Protector (protection)
Ultramar offers maintenance bundles that combine the correct products. Bundles are often more cost-effective than purchasing products separately.
Do not be too economical when applying the protector. Cotton absorbs a significant amount of product. Using too little can result in uneven protection. It is wise to choose a slightly larger packaging size. Extra product is useful for touch-ups or future maintenance.
Is Canvas & Cotton Protector safe to use?
Ultramar maintenance products are PFAS-free.
This means:
- Suitable for home use
- Safer for people, pets and the environment
- Developed without persistent fluorinated substances
PFAS-free does not mean less effective. The product is designed to provide long-lasting protection while remaining suitable for everyday use.
In short
If your tent or fabric is made of cotton or canvas and you want to restore its water-repellent properties, Canvas & Cotton Protector is the right waterproofing product.
Always identify the material first, clean the fabric thoroughly and apply the protector only to clean and completely dry fabric. This ensures a reliable and even result.
Ultramar helps consumers clean, maintain and protect boat covers, tents, convertible roofs, plastic windows and other outdoor materials themselves, using PFAS-free maintenance products that are easy to use at home and based on a proven three-step maintenance process.

