Weber Neutral Silicone – Oxime-Based Neutral-Curing Silicone Sealant

Weber Neutral Silicone

Weber Neutral Silicone is a single-component, oxime-based neutral-curing silicone sealant that provides strong adhesion to both porous and non-porous surfaces. Thanks to its low-modulus, highly elastic formulation and non-corrosive properties, it can be safely used for sealing and joint applications in a wide range of construction projects.

Product Description

Weber Neutral Silicone is a single-component, gun-grade silicone sealant that cures through a neutral oxime-based curing system.

Advantages

• Neutral curing technology prevents corrosion on metal surfaces
• High elasticity and low modulus
• Suitable for vertical surfaces and suspended ceiling applications
• Low odor formulation

Areas of Use

Weber Neutral Silicone is recommended for the following applications:

• Sealing applications for PVC, timber, and aluminum joinery
• Glass installations
• Bonding porous and non-porous materials
• Interior and exterior sealing applications requiring durable waterproofing

Suitable Substrates

• Concrete, precast concrete, fiber-reinforced concrete, and cement boards
• Metal and aluminum
• Brick, ceramic, and marble
• Glass and galvanized steel
• Plastic surfaces

Professional consultation is recommended before application on other substrates.

Surface Preparation

• Joint surfaces must be clean and dry.
• Remove all traces of cement, oil, paint, and adhesive residues.
• Non-porous surfaces should be free from coatings; if necessary, clean with cellulosic thinner.
• Metal surfaces should be treated with an anti-corrosion primer.
• Masking tape may be used to achieve neat and precise joint edges.

Application Conditions

• Surface and ambient temperature: +5°C to +35°C
• Do not apply in excessively hot or humid conditions.
• Do not apply on frozen surfaces or where freezing conditions are expected.

Application Instructions

• Apply the sealant so that it contacts both sides of the joint and the polyethylene backer rod.
• The cartridge nozzle should remain inside the joint while applying a continuous and uniform bead.
• Apply in a single layer; overlapping applications should be avoided.
• Remove trapped air bubbles during finishing.
• The surface may be smoothed using a tool moistened with soapy water.
• Moisture is required for curing; therefore, the product should not be used in airtight environments.
• Clean tools immediately after use with acetone.

Application Tools

• Silicone gun

Consumption

• Approximately 3 meters per cartridge for a 10 mm × 10 mm joint

Warnings and Recommendations

• Adheres to most construction materials without primer; however, testing is recommended on absorbent, glossy, or painted surfaces.
• Joint width should generally be approximately twice the joint depth.
• The product is not paintable.
• Not suitable for aquarium applications.

Technical Properties

Safety Precautions

• Wear protective gloves, safety goggles, and a mask during application.
• Avoid contact with skin and eyes.
• In case of contact, rinse thoroughly with plenty of water and seek medical advice if necessary.
• Refer to the Safety Data Sheet (SDS) for disposal and safety information.

Frequently Asked Questions

Where can Weber Neutral Silicone be used?

It is suitable for sealing PVC, timber, and aluminum joinery, glass applications, and bonding a wide range of construction materials.

Can it be painted?

No. Weber Neutral Silicone is not paintable.

What is the curing time?

At 25°C and 50% relative humidity, skin formation occurs within 5–8 minutes, and the curing rate is approximately 2.3 mm per day.

Can it be applied on metal surfaces?

Yes. Its neutral-curing formulation does not cause corrosion on metal surfaces.

Can it be used in aquariums?

No. Weber Neutral Silicone is not suitable for aquarium applications.