Sika Everbuild Everflex 115 GP Mastic 285ml Grey - Seal for Interior & Exterior

Everbuild Everflex 115 GP Building Mastic is an oil-based compound designed for both internal and external joint pointing and sealing. Its high-solids formula delivers strong weatherproof protection while remaining overpaintable, so you can finish the surface to match any decor. The mastic adheres directly to common construction materials such as brick, concrete, wood, metal and glass without a primer, saving time and labor. Ideal for sealing composite sectional panels and low-movement vertical joints, it fills gaps effectively and stays semi-dry, retaining a flexible plastic core beneath the cured skin for lasting performance. Whether you are repairing window and door surrounds, sealing perimeter joints, or reinforcing panel seams, Everflex 115 provides a reliable, durable seal that resists moisture and temperature changes. Its grey colour blends with most substrates, and the 285 ml tube offers convenient, mess-free application for DIY enthusiasts and professional tradespeople alike.