Trade-Grade Silicone Sealants

Professional-grade silicone sealants engineered for clean finishing and long-lasting weatherproofing on uPVC, aluminium, and timber window frames. Formulated for demanding trade applications with superior adhesion and flexibility.

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Weatherproof
100% waterproof seal

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Flexible
Movement accommodation

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Fast Cure
24-48 hour setting

Material Compatibility

🪟 uPVC → Neutral cure

🥈 Aluminium → Acetic cure

🌲 Timber → Universal

🧱 Masonry → High modulus

Silicone Selection & Application Guide

🪟 Neutral Cure Silicone

Ideal for uPVC frames and sensitive materials. No acetic acid release during curing.

  • Cure time: 24-48 hours
  • Movement: ±25%
  • Temperature: -50°C to +150°C
  • Application: Window frames, sills

🥈 Acetic Cure Silicone

Fast-curing sealant for aluminium and metal frames. Strong adhesion and durability.

  • Cure time: 12-24 hours
  • Movement: ±20%
  • Temperature: -40°C to +120°C
  • Application: Metal frames, hardware

💡 Application Tip: Apply in temperatures between 5°C and 35°C for optimal curing. Ensure surfaces are clean, dry, and free from contaminants for maximum adhesion.

Silicone & Sealants for Window & Door Installation

Trade-grade silicone sealants engineered for clean finishing and long-lasting protection on uPVC, aluminium, and timber window frames. Whether you’re sealing perimeter joints, finishing trims, or working with specialist glazing materials — these products keep water, air, and movement under control.

✅ Installer-first benefits

  • Neutral Cure formulas prevent staining & corrosion on PVC-U & coated aluminium
  • Low modulus elasticity absorbs frame expansion without cracking
  • RAL-matched colours for a perfect finish
  • Foil packs available to reduce plastic waste on site
  • UK-focused fulfilment → reliable delivery to your job

Choose the Right Sealant for the Job

Use Case Best Options
Perimeter sealing around frames Low Modulus Neutral Cure Silicone
Connection joints between materials Penosil / Hybrid Polymers
Trim finishing / visible joints RAL Colour-Matched Silicones
Bathrooms / internal wet areas Sanitary Silicone
Lead flashings / roofing Specialist Lead Sealants
Self-cleaning glass installations Specialist Glass-Compatible Silicone
Commercial jobs with speed focus Foil Pack Silicone Sausages

 

Shop by Type

Neutral Cure Silicone Sealants

No staining — ideal for uPVC & powder-coated aluminium frames.
Recommended for most modern window installations.

RAL Colour-Matched Sealants

Anthracite Grey (RAL7016), Traffic White (RAL9016), Cream (RAL9001) and more. Match exactly to aluminium and composite door colours.

Hybrid Polymer Sealants

When you need paintable, all-material performance — indoors & out.

Foil Packs / Sausages

Lower waste than cartridges — perfect for site teams & high-volume installs.

Specialist Sealants

For self-cleaning glass, mirrors, and lead flashings where the wrong chemistry fails fast.

What Makes a Good Glazing Seal?

Look for:

  • LMN (Low Modulus Neutral Cure)
  • ETAG / CE approvals for facades & window joints
  • UV resistance (no yellowing)
  • Tool-friendly texture for neat beads

Avoid:

  • High-modulus silicone on frames (can crack)
  • Acetoxy cure near sensitive substrates (can cause corrosion)

Quick Colour Guide for Window Frames

Frame Type Most Common Choices
Aluminium RAL7016 Anthracite / Black / Silver Grey
uPVC White RAL9016 Traffic White
Timber Finishes Cream / Light Oak / Brown
Composite Doors Anthracite / Black / Colour-matched variants

💡 Tip: Always check the frame colour code from the supplier spec — small errors stand out forever.

Frequently Asked Questions

Will neutral cure silicone stain uPVC or aluminium?
No — neutral cure avoids acidic vapours, preventing staining and corrosion.

Can I use one product everywhere?
For external window joints, yes → choose LM neutral cure.
But for baths/mirrors/lead → use specialist products.

Are foil packs better than cartridges?
Yes — lower cost per metre + less waste on site.

Why Buy Your Glazing Sealants from GSD?

✅ Trade-focused selection — no DIY clutter
✅ High-rotation colours in stock → delivered to UK sites
✅ Products chosen for modern glazing materials
✅ Competitive trade pricing & easy online ordering
✅ Packaging + SKU structure optimised for speed on site

Ready to seal the job properly?

🛒 Shop Silicone & Sealants for Window Installation
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