Applying Bond It Trowel Mastic

Bond It Trowel Mastic is a traditional oil-based sealing compound designed for glazing applications and general building maintenance. It is applied using a trowel or filling knife and forms a flexible, weather-resistant seal once installed.

Correct preparation and application are important to ensure the compound performs as intended.

Suitable Applications

Bond It Trowel Mastic is designed for:

• General sealing applications in building work

• Bedding applications where a flexible compound is required

• General building maintenance tasks

Because the compound is manually applied, it allows installers to work the material firmly into place using a trowel or filling knife, ensuring the compound can be pressed into position and shaped during application to form a flexible, weather-resistant seal.

Surface Preparation

Before applying the mastic, ensure surfaces are properly prepared.

1. Surfaces should be clean, dry and free from dust, grease or loose materials.

2. Remove any old or deteriorated sealing compounds where possible.

3. Ensure the substrate is sound so the mastic can form a consistent seal.

Good preparation allows the compound to bond effectively and helps prevent sealing issues later.

Application Method

Bond It Trowel Mastic is supplied ready for use and should be applied manually.

1. Using a trowel, filling knife or putty knife, remove the required amount of compound.

2. Press the mastic firmly into the joint or glazing rebate.

3. Ensure the joint is completely filled to prevent gaps.

4. Smooth the surface using the trowel or knife to produce an even finish.

Because the compound remains workable, installers can shape and finish the joint during application.

Performance Characteristics

Bond It Trowel Mastic forms a flexible, non-setting seal that helps maintain weather resistance around glazing and building joints. This flexibility allows the seal to accommodate minor movement without cracking.

Storage and Handling

Keep containers sealed when not in use and store in dry conditions. Standard protective equipment such as gloves should be used when handling building compounds.

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