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VITCAS OC Outdoor Oven Cement is a pre-mixed dry powder refractory mortar formulated for jointing fire bricks and assembling Vitcas Sectional Wood Fired Outdoor Pizza Ovens. It is ideal for exterior high-temperature applications requiring firebrick jointing, offering excellent performance in a wide range of outdoor heating projects. Resistant to 1200°C / 2190°F. Coverage: 10kg tub is suitable for jointing approximately 15 fire bricks (230x114x64mm) or around 0.44m² (4.75ft²) with a joint thickness of 10mm (7/16").
Key Characteristics
Water-Resistant: Insoluble in water, ensuring long-lasting durability even when exposed to moisture.
No Heat Cure Required: Sets naturally without the need for heat.
Frost and Rain Resistant: Resists washing out when exposed to frost or rain, making it ideal for outdoor use.
Applications
Barbecues: Ideal for securing firebricks and sealing joints in outdoor barbecue structures, ensuring long-lasting performance under high heat.
Outdoor Pizza Ovens: Perfect for jointing the fire bricks in wood-fired outdoor pizza ovens, providing strong and heat-resistant joints that can withstand repeated exposure to extreme temperatures.
Bread Ovens: Suitable for traditional bread ovens, where it ensures a durable seal that can handle the prolonged high temperatures required for baking.
Smokehouses: Provides excellent sealing for smokehouse fire chambers, ensuring heat retention and smoke control for consistent cooking results.
Fire Pits: Excellent for constructing and maintaining fire pits, offering a reliable bond that can endure direct exposure to flames and high temperatures.
Outdoor Fireplaces: Suitable for building or repairing outdoor fireplaces, ensuring a strong and durable bond in areas subject to extreme heat.
Garden Incinerators: Can be used in the construction or repair of garden incinerators, providing heat-resistant sealing for prolonged burning sessions.
Tandoor Ovens: Perfect for sealing and maintaining traditional tandoor ovens, offering long-term durability under intense heat.
Instructions
Preparation: Open the container and stir the dry product thoroughly before adding water.
Mixing: Combine the dry powder with water to achieve a trowelling consistency. Use approximately 200ml of water per 1 kg of material.
Brick Preparation: Wet the fire bricks before applying the oven cement to ensure optimal adhesion.
Joint Thickness: Suitable for joint thicknesses starting from 3mm. For gap-filling over 15mm, use Vitcas HPS Heatproof Screed.
Setting Time: The oven cement will set within a few hours, with longer setting times in cold weather.
Note: We do not recommend the addition of cement dye or pigment for this product.
VITCAS OC Outdoor Oven Cement is a high-temperature mortar for jointing fire bricks, building outdoor pizza ovens and assembling VITCAS sectional wood-fired ovens and covering oven insulation. It is also suitable for barbecues, fire pits, smokehouses, outdoor fireplaces, garden incinerators and tandoor ovens. Its water-resistant formulation is designed for exterior high-temperature applications exposed to rain and frost.
Question
How much water should I add when mixing it?
Answer
Use approximately 200ml of water for each 1kg of dry material. Stir the powder thoroughly before adding water, then mix until it reaches a workable trowelling consistency. Add the water carefully rather than making the mixture unnecessarily wet, as the correct consistency helps the cement remain manageable when jointing fire bricks.
Question
Do fire bricks need wetting before application?
Answer
Yes. Wet the fire bricks before applying the VITCAS OC oven cement to support good adhesion. The fire brick surfaces should also be suitable for jointing and free from loose material that could interfere with the bond. Prepare the fire bricks before mixing so the OC oven cement can be applied promptly once it reaches the required trowelling consistency.
Question
What joint thickness can OC Outdoor Oven Cement fill?
Answer
The VITCAS OC outdoor oven cement is suitable for joints starting from 3mm. For gaps larger than 15mm, VITCAS recommends using HPS Heatproof Screed instead. Selecting the correct product for the gap size helps avoid using a jointing mortar where a dedicated gap-filling material is required.
Question
How much area will a 10kg tub cover?
Answer
A 10kg tub will joint approximately 15 standard fire bricks measuring 230 × 114 × 64mm. This is equivalent to around 0.44m² when applied at a joint thickness of 10mm. Actual consumption will depend also on the joint depth, joint width and the amount of material lost during application.
Question
How long does OC Outdoor Oven Cement take to dry?
Answer
The oven cement begins setting within a few hours, although colder conditions can extend the setting time. The confirmed drying time is 24 hours at 20°C. Allow suitable drying conditions before continuing the project or operating the installation, and account for slower drying when the surrounding temperature is lower.
Question
Does OC Outdoor Oven Cement require heat curing?
Answer
No. VITCAS OC Outdoor Oven Cement sets naturally and does not require heat to cure. This is useful when constructing or repairing an outdoor oven before it is ready to be fired. Allow the confirmed drying period and suitable environmental conditions rather than lighting the appliance simply to cure the cement.
Question
Can pigment be added to change the cement colour?
Answer
No. VITCAS does not recommend adding cement dye or pigment to this product. The cement is grey and dries to a dark grey finish. Adding an unapproved colouring material could alter the prepared mixture, so use the product without pigment and plan any decorative exterior finish separately.
