Builders Silicone Sealant – Brown – Indoor & Outdoor Use

Product Overview

This Premium 450 Builders Silicone, available in a 300ml cartridge, is a low modulus, neutral cure silicone sealant perfect for general construction, perimeter, and façade applications. It provides superior adhesion to various building materials, including glass, metal, wood, PVCu, and polycarbonate, forming a durable, flexible, and weather-resistant joint. The non-corrosive formula ensures compatibility with sensitive metals like copper, zinc, and lead, while maintaining elasticity under movement conditions up to ±25%. Ideal for both internal and external perimeter pointing, expansion joints, and panel sealing, this silicone performs reliably in diverse building environments. The brown color offers a warm, complementary tone, suitable for use with timber, brick, and darker architectural finishes.

Features & Benefits

• Neutral Cure Formulation: Compatible with metal, glass, and composite substrates without surface damage.
• Low Modulus Flexibility: Accommodates joint movement up to ±25% for long-term sealing in dynamic joints.
• High Adhesion Strength: Bonds securely to glass, metals, plastics, wood, and painted surfaces without priming.
• Weather and UV Resistant: Maintains flexibility and appearance under exposure and temperature variations.
• Paint Compatibility: Resists plasticiser migration, suitable with both water and solvent-based paints.
• Brown Colour Finish: Provides a rich joint line ideal for timber frames, brickwork, and brown-toned cladding.

Applications

• Perimeter Pointing: Seals around PVCu, timber, and metal frames.
• Expansion Joints: Ideal for joints requiring flexibility and durability.
• Panel and Façade Sealing: Suitable for pre-formed panels and building elements.
• Roof and Parapet Sealing: Waterproofs junctions and terminations on roofing systems.
• Glazing Applications: For glass-to-glass, glass-to-aluminium, and glazing repair work.
• Metal and Leadwork: Seals joints in soft metals like lead, copper, and zinc.

Installation Guidance

• Surface Preparation: Ensure surfaces are dry, clean, and free from dust or oil before application.
• Priming: Generally not required; test a small area if adhesion is uncertain.