Cromar Trowel Mastic

Cromar Trowel Mastic is a thick, heavy-bodied bituminous mastic specially designed for filling joints, cracks, and splits in a wide variety of building and roofing materials. Whether you're dealing with roofing felt, asphalt, concrete, asbestos cement, or metal gutters and drainpipes, Trowel Mastic delivers a reliable, long-lasting seal. Perfect for repairs and maintenance work, this mastic offers a practical solution for patching and sealing without the need for complicated tools or extensive prep.

Instant Water Resistance for Fast Results

One of the standout benefits of Cromar Trowel Mastic is that it is resistant to water penetration immediately after application. This means it can be used even when poor weather is on the horizon, giving you peace of mind that your repairs will hold up from the moment you apply it. It's a particularly effective option for emergency leak repairs and routine maintenance, especially on flat roofs, valleys, gutters, and around pipework where water ingress is a common issue.

Ideal for Remedial Work

Whether you're working on an older roof, replacing worn-out materials, or sealing up joints and cracks, Cromar Trowel Mastic is a dependable choice for remedial applications. Its thick consistency allows it to stay in place and create a tight seal, even in tricky areas or uneven surfaces. With minimal preparation and a simple application process using a trowel or similar tool, it’s a great product for both professional roofers and confident DIYers.

Key Features

Heavy-bodied bituminous mastic Ideal for filling cracks, joints, and splits Suitable for roofing felt, asphalt, concrete, asbestos cement, and metal guttering Instant resistance to water after application Great for maintenance and emergency repairs Easy to apply with a trowel

Frequently Asked Questions

1. Can Cromar Trowel Mastic be used in wet weather?

Yes. One of its key benefits is that it offers **immediate resistance to water penetration**, so it's a great option for sealing during or just before bad weather conditions.

2. What materials will it stick to?

Cromar Trowel Mastic is suitable for use on a range of surfaces including **roofing felt, concrete, asphalt, asbestos cement, and metal components** like gutters and downpipes.

3. Is this suitable for long-term roof repair?

Absolutely. While ideal for quick fixes, it’s also a reliable option for **permanent sealing and maintenance**, especially when used correctly and applied to clean, dry surfaces for best adhesion.