The Best Glazing Silicone Sealants
When it comes to choosing the right glazing silicone, there’s more to it than simply picking the first tube off the shelf. Whether you’re working on timber windows, aluminium frames, or uPVC units, using the correct sealant makes a significant difference in durability, weather resistance, and finish.
At Sealant Supplies, we understand the importance of reliable, professional-grade products that get the job done right the first time. We stock a wide range of glazing silicone sealants from top brands. All available with bulk order options and trade discounts.
What is Glazing Silicone?
Glazing silicone is a specialist sealant designed for sealing around window panes and frames. Unlike standard silicones, it’s formulated to adhere to glass, metal, wood, and plastic, providing excellent flexibility and weather resistance over time.
Its primary role is to form a watertight and airtight seal, protecting interiors from the elements and helping to improve thermal efficiency. It also plays a key part in preventing rattling, movement, or draughts in window units.
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£4.63 - £5.54 ex. VATSelect options This product has multiple variants. The options may be chosen on the product page
Choosing the Right Glazing Silicone
Not all glazing silicones are created equal. The right product depends on the application, substrate, and environment. Here are a few key factors to consider:
1. Substrate Compatibility
Some silicones are better suited to uPVC, while others work best with aluminium or painted wood. Always check the manufacturer’s recommendations to ensure proper adhesion.
2. Cure Type
- Acetoxy cure silicones offer strong adhesion and fast curing, but can corrode some metals.
- Neutral cure (or oxime/alcohol cure) silicones are ideal for sensitive materials, offering excellent compatibility with glass and metal without causing damage.
3. UV & Weather Resistance
For external applications, a glazing silicone with high UV and weather resistance is crucial to prevent cracking and discolouration over time.
4. Movement Accommodation
Choose a sealant that can flex with the building’s movement. High-performance silicones can handle joint movement from expansion and contraction, especially in large glazed areas.
Recommended Glazing Silicone Products
Here are some of our best-selling glazing silicones, trusted by professionals across the UK:
- Dowsil 781 Glazing Silicone
Acetoxy curing sealant with strong adhesion to glass and non-porous surfaces. Fast cure and weather-resistant. - Bond-It WP100 Neutral Cure Silicone
Neutral cure oxime silicone ideal for uPVC and metal. UV stable and flexible for long-term performance. - Everbuild 825 Silicone
Low modulus, neutral cure silicone perfect for sealing window and door perimeters. Excellent movement capability.
All of our products are available with bulk buy discounts and next-day delivery options, making them ideal for trade and large-scale projects.
Trade Discounts & Bulk Ordering
If you’re regularly purchasing sealants for commercial projects or trade work, we offer exclusive discounts for trade accounts. Bulk orders can be easily placed online or via our sales team, with tailored pricing available to suit your needs.
We aim to support tradespeople and contractors by ensuring access to high-quality glazing silicones at competitive rates with no compromise on performance or reliability.
Why Buy From Sealant Supplies?
With years of experience supplying sealants across the UK, we’ve built a reputation for stocking only the best. Our team knows sealants inside out and is always on hand to help you choose the right product for your project.
- Trusted trade brands
- Competitive pricing
- Fast delivery
- Expert advice
- Wide range of colours and finishes
Need Help Choosing the Right Glazing Silicone?
Not sure which glazing silicone is best for your application? Whether you’re sealing new windows or refurbishing old frames, our team is here to help. Give us a call or drop us an email and we’ll guide you to the right solution.
Explore our full range of glazing silicone sealants today and discover the quality and value Sealant Supplies has to offer.
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£4.63 - £5.54 ex. VATSelect options This product has multiple variants. The options may be chosen on the product page
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£2.27 - £2.60 ex. VATSelect options This product has multiple variants. The options may be chosen on the product page
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£2.79 ex. VATSelect options This product has multiple variants. The options may be chosen on the product page
