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Most guys on site wet their trowels, but I quit that habit and my mortar holds up better in the heat.
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amycraig7d ago
Switched to a dry trowel, mortar held up all summer.
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smith.elliot7d ago
Hold up, you might be onto something bigger than just the water. A wet trowel can actually pull the lime or cement right out of the surface layer of your mortar. That weakens the very first bond it makes. So if your brick is sucking up moisture, it's grabbing weakened stuff. In the heat, that just cooks a bad bond into a failed one.
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