The dry grout method is a technique used to fill joints, particularly between paving stones or tiles, that relies on natural moisture adding water to the formula's cement content after the formula has been installed. This contrasts with traditional grouting where water is mixed in beforehand to create a paste.
Understanding the Dry Grout Technique
Unlike wet grout mixtures, the dry grout method utilizes a dry, cement-based formula. Its unique characteristic is that the curing process begins only after the dry mix is in place and exposed to natural moisture, such as rain or humidity, which penetrates the joints and activates the cement.
The Installation Process
The dry grout method is typically applied using a straightforward process:
- Preparation: Ensure the joints are clean and free of debris.
- Application: Using a broom or brush, the dry grout mixture is dry brushed into the joints until the gaps are filled.
- Filling: Work the material into all crevices to ensure tight packing.
- Cleaning: Once the joints are full, excess grout is swept away from the surface.
- Finishing: The joints may be 'struck off' to finish, which involves compacting and shaping the top surface of the grout within the joint.
This dry application allows for efficient filling of joints across large areas before the curing process begins, which is activated naturally over time by ambient moisture.
