When choosing a sealant, you'll often come across MS Polymer (Hybrid Polymer) and Silicone Sealant. While both create flexible, waterproof seals, they're designed for different jobs.

Knowing which one to use will help you achieve a stronger, longer-lasting finish.

What Is MS Polymer?

MS Polymer is a hybrid adhesive and sealant. It combines strong bonding with excellent flexibility, making it suitable for both interior and exterior projects.

It's commonly used on:

• Wood
• Brick
• Metal
• Concrete
• uPVC
• Glass

Many MS Polymer products are also paintable once cured.

What Is Silicone Sealant?

Silicone sealant is designed to create a waterproof seal. It's most commonly used in bathrooms and kitchens where protection against moisture is essential.

Typical applications include:

• Baths
• Showers
• Sinks
• Splashbacks
• Worktops

Sanitary silicones also contain mould-resistant additives to help keep joints looking clean.

Which Is Better?

It depends on the job.

Choose MS Polymer if you need a product that bonds materials together as well as sealing them. It's ideal for construction, repairs and outdoor use.

Choose Silicone Sealant if you're sealing around sanitary fittings where waterproofing and flexibility are the main priorities.

Can You Use One Instead of the Other?

In some cases, yes. Hybrid polymers are extremely versatile and can replace silicone in many applications. However, for bathrooms and kitchens, a dedicated sanitary silicone is usually the best option because it's specifically designed to resist mould and constant moisture.

Final Thoughts

Neither product is better in every situation. MS Polymer is the better choice for bonding and sealing a wide range of materials, while silicone remains the go-to option for bathrooms, kitchens and other wet areas.

Choosing the right sealant for the job will give you a stronger, longer-lasting finish and help prevent future repairs.