Yes, you can use dry rods on breeze blocks, especially if you are addressing rising damp.
Here's a more detailed explanation:
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Purpose: Dry rods are typically used to create a chemical damp-proof course (DPC) in walls affected by rising damp. They are inserted into pre-drilled holes within the mortar joints.
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Application to Breeze Blocks: If rising damp is present in internal breeze block walls, applying dry rods internally is a viable solution. Remember to drill into the mortar joints, not the breeze blocks themselves.
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Exterior Walls: Consider treating exterior brick walls as well if you have sufficient dry rods available. This provides a more comprehensive solution against moisture ingress.
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Installation: It is crucial to follow the manufacturer's instructions for drilling hole sizes and spacing when installing the dry rods. Correct installation is vital for the system's effectiveness.
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Why Mortar Joints? Mortar is more porous than breeze blocks or bricks, making it the preferential path for rising damp. Targeting the mortar joints ensures the DPC is correctly positioned to block moisture rising through the wall.
In summary, dry rods can be used on breeze blocks to combat rising damp, but correct installation in the mortar joints is essential for success, and treating adjacent brick walls is also advisable if possible.
