Heat-resistant refractory mortar Boramax ready-mix 2 kg (BM ZA SZA 2L)

Boramax ready-mix heat-resistant refractory mortar in a 2 kg pack is formulated for repair and assembly of masonry in high-temperature installations. This chamotte-based mortar is suitable for bonding and jointing chamotte bricks, firebrick elements and ceramic parts used in fireplaces, stoves and chimneys. The product is supplied as a pre-mixed, trowel-ready material that simplifies on-site work for both indoor and outdoor applications where elevated temperature resistance is required.

Advantages

The mortar comes pre-mixed to ensure consistent texture and ease of application, reducing preparation time and material waste. Its chamotte composition provides thermal stability and good adhesion to refractory substrates. The ready-mix formulation minimizes the need for additional additives or special mixing equipment, and the 2 kg packaging is convenient for small repairs and maintenance jobs.

Suitable for

• Repairing cracks and joints in fireplaces and wood-burning stoves
• Rebuilding and joining chamotte or firebrick components in chimneys
• Sealing gaps around ceramic and refractory inserts
• Routine maintenance of high-temperature outdoor and indoor installations

Key specifications

• Form: pre-mixed chamotte refractory mortar in paste form
• Package weight: 2 kg
• Heat resistance: suitable for high-temperature service in fireplaces, stoves and chimneys
• Application: trowel-applied for bonding and jointing refractory bricks and ceramic parts
• Suitable surfaces: chamotte, firebrick, ceramic and other refractory substrates

How to use

Ensure surfaces are clean, dry and free of loose debris and dust before application. Open the tub and stir the ready-mix to obtain a uniform consistency if slight separation has occurred during storage. Apply the mortar with a putty knife or trowel, pressing firmly into joints or onto mating surfaces to achieve a compact bond. Smooth and shape the mortar as required and remove excess material. Allow the repaired area to cure according to ambient conditions before exposing it to high temperatures; initial setting and final strength are influenced by temperature and humidity.

Usage recommendations

For best results, use the product at moderate ambient temperatures and avoid applying to frozen or excessively wet substrates. When repairing active heating appliances, allow the mortar to cure and dry sufficiently before subjecting it to full thermal load. Wear appropriate personal protective equipment such as gloves and eye protection during application.