FOUNDATION WALLS
MAIN CHARACTERISTIC
■ Exposure to de-icing salts;
■ Below ground level;
■ High saturation level.
As mentioned in the CSA A 179 Standard, when building a new masonry foundation wall, it is necessary to use a mortar with higher compressive strengths since this type of wall is typically load-bearing and is exposed to a high level of saturation. A mortar with higher compressive strengths is also recommended for restoring foundation walls.
In addition, since foundation walls are typically below grade, there could be a lack of CO2 which is necessary for the development of the properties in mortar containing air lime. For this reason, we prefer mortars which contain a hydraulic binder, such as hydraulic lime (natural or not) as well as natural cement.
TIP
Since the compressive strengths that we are looking for are usually high, we recommend the use of a mortar generally assigned to the laying of masonry elements as a repointing mortar.
Recommendations
BEDDING MORTAR
■ King® RosenMix 500 or King® HLM-500
REPOINTING
■ King® RosenMix 500 or King® HLM-500
■ If the walls are highly exposed to de-icing salts : King® Reconstec 900
