King® MasonCare® 300 C Series

12 months in original, unopened bag

Always store in a dry area, protected from the weather. At the job site, an additional tarpaulin must be used to cover the product to prevent water infiltration.

Note: The pigments used to colour the mortar have no effect on its mechanical properties.

0.130 % at 91 days

Refer to the "Placement condition" section on the Specifications template document on Sika Canada Website.

Refer to the "Placement condition" section on the Specifications template document on Sika Canada Website.

Refer to the "Placement condition" section on the Specifications template document on Sika Canada Website.

Approx. 0.018 m³ (0.65 ft³) of fresh mortar per 30 kg (66 lb) bag 

Small batch

Important: In order to avoid segregation issues, always mix the total content of one bag. If less than a 30 kg (66 lb) of King® MasonCare® 300 C Series is required, dry mix - without water – the total contents of the bag in a clean container, take the required amount, and then add water to the amount withdrawn from the mixture.

Large batch

Always mix the entire content of the bag. Mix the King® MasonCare® 300 C Series with a maximum of 3.8 L (1 US gal) of water per 30 kg (66 lb) bag, in a clean mortar mixer. Pour 3.3 L (0.87 US gal) of water into the mixer and add 30 kg (66 lb) of King® MasonCare® 300 C Series. Mix for five (5) minutes, or five (5) to ten (10) minutes when using a coloured mortar or when a colourant is added on-site. Allow the mortar to stand for a short period of time. Using the remaining water, adjust the mortar to obtain the desired consistency. Once well mixed, the consistency of the mortar should be firm enough to allow you to shape a ball with your hands. Let the mortar sit for a 30 minutes period before applying.

Once the desired consistency is achieved, it is not recommended to add water to the coloured mortars in order to compensate for water loss caused by evaporation. Adding water may affect the final colour of the product.

The application of the mortar must comply with the requirements of Section 6 of CSA-A371-14.

Curing is essential for optimizing the physical properties of the mortar. Curing is carried out by performing a moist cure which must begin as soon as the initial setting of the mortar and for a period of three (3) to seven (7) days. To learn more about the moist cure, refer to the guide: How to perform a moist cure for masonry, published by Sika Canada and available on the company’s website.

In order to avoid the use of chemicals, it is always recommended to remove as much mortar splashes or stains as possible before the material hardens. Use water, a piece of burlap or wood. If the use of cleaning products is necessary, be sure to contact the manufacturer of the product to validate the compatibility and the procedure to follow. It is important to mention to the manufacturer that it is a hydrated lime-based mortar with the addition of iron and titanium oxides pigments when coloured.

Regardless of the technique or product selected, it is essential to preserve the integrity of the mortar. 

Be sure to clean a test area before proceeding with the work.

Clean all tools and equipment after use with water. Once hardened, the product can only be removed mechanically.