King® HLM-350 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. 

* The compressive strengths of natural hydraulic lime mortars gradually increase as a function of time unlike mortars containing cement which reach their optimal value around 28 days.

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

0.05 % 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

Prepare the surface to be repaired in order to remove loose particles and faulty mortar on a thickness corresponding at least to twice the thickness of the joint to be repaired or up to obtaining a healthy mortar. Moisten the area to be repaired without leaving standing water in the cavities to be filled.

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® HLM-350 C Series is required, dry mix - without water - the total contents of the bag in a clean mixing container, take the required amount, and then add water to the amount withdrawn from the mixture.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® HLM-350 C Series with a maximum of 4 L (1 US gal) of potable water per 30 kg (66 lb) bag, in a clean mortar mixer. Pour 3.5 L (0.92 US gal) of water into the mixer and add 30 kg (66 lb) of King® HLM-350 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 at the job 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. 

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.

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

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.