Everbuild 115 GP Contract Oil Based Traditional Building Mastic 4 colours

Everbuild Everflex 115 GP Contract Oil Based Traditional Building Mastic 4 colours White Brown Grey and stone

Sika Code: 489634 489635 489636 489637

• MASWE - White
• MASBN - Brown
• MASGY - Grey
• MASNL - Stone

Product Overview:

The Everbuild Everflex 115 GP Traditional Building Mastic is a professional-grade, oil-based sealant designed for long-lasting performance on both internal and external applications. Formulated with a durable, semi-drying composition, it offers superb adhesion to concrete, brick, wood, metal, and glass. This flexible mastic delivers a watertight, weather-resistant seal ideal for perimeter pointing, glazing, roofing, and general construction work, the use of a polyethylene backer rod to gaps around frames and expansion joints prior to use is recommended.

Supplied in a 310ml C3 cartridge and available in four colours – White, Brown, Grey, and Stone – it provides a reliable, traditional finish that blends seamlessly into surrounding materials. Easy to apply, resistant to cracking or shrinking, and capable of withstanding harsh outdoor conditions, Everbuild 115 GP remains the preferred choice for tradespeople and DIY users needing a classic, durable mastic for all sealing and jointing tasks.

Key Features and Benefits

• Oil-Based, Traditional Formula: Proven, long-life performance for professional building and glazing work.

• Flexible and Semi-Drying: Maintains elasticity under surface skin to accommodate joint movement.

• Excellent Adhesion: Bonds to brick, concrete, metal, wood, glass, and most common building materials.

• Over-paintable: Can be painted once cured for a uniform, colour-matched finish.

• High Solids Content: Fills gaps effectively with minimal shrinkage.

• Weather-Resistant: Reliable performance in all seasons and conditions.

• No Primer Required: Ready to apply directly to clean, dry surfaces.

• Available Colours: White, Brown, Grey, and Stone – suitable for both modern and heritage projects.

Typical Uses

• Perimeter Pointing: Internal and external sealing around doors and window frames.

• Bedding Mastic: For glazing and joint sealing in traditional installations.

• General Sealing: Between brickwork, concrete, and timber structures.

• Roofing Applications: Ideal for sealing flashings, joints, and general maintenance work.

• Construction and Joinery: Excellent adhesion where movement or vibration is present.

How to Use

• Surface Preparation: Ensure surfaces are clean, dry, and free from grease, dust, or debris.

• Cut and Load: Trim the nozzle at an angle to the required bead size and insert the cartridge into a standard sealant gun.

• Application: Apply an even bead of mastic into the joint or gap, maintaining steady pressure for consistent results.

• Finishing: Smooth using a suitable tool or spatula the use of a Tooling Liquid Smoothing Agent can make this job easier. Avoid over-working.

• Curing: Allow the surface to skin before painting. Full cure occurs as the oil-based formula oxidises naturally.

Frequently Asked Questions (FAQs)

• What makes Everbuild 115 GP ideal for exterior use?
  Its oil-based formula provides excellent weather resistance, remaining flexible and intact under varying temperatures and UV exposure. Perfect for window frames, masonry joints, and roof details.

• Can it be painted over?
  Yes. Once cured, it can be overpainted with most oil-based or compatible paints to match surrounding surfaces.

• Does it stay flexible over time?
  Yes. Beneath its surface skin, the mastic remains permanently elastic, accommodating minor structural movement.

• Is primer required?
  Not usually. It adheres well to most substrates, though highly porous materials can benefit from a primer for maximum bond.

• Can it be used indoors?
  Absolutely. Suitable for both interior and exterior applications where a durable, traditional finish is needed.

Summary

The Everbuild Everflex 115 GP Traditional Building Mastic is the reliable, time-tested choice for contractors, builders, and professionals. Offering superb flexibility, adhesion, and weather resistance, it performs flawlessly in both heritage and modern building environments. Available in four classic colours and supplied in 310ml trade cartridges, this traditional oil-based mastic ensures lasting protection, watertight performance, and a professional finish every time.

Explore the full range of All Silicones and Sealants for more trade-trusted solutions.

Everbuild 115 GP Mastic Information:

"Always read the Technical Datasheet prior to first use to ensure you have the correct information and  product for your application"