Thank you for your question. Yes, OSI QUAD is recommended for use on brick and block surfaces. Please ensure the surface is clean, sound, and free of contaminants before application.

Thank you for your question. Unfortunately, we need the exact product details to recommend the closest matching OSI QUAD Sealant color. Once you have this information, you can visit www.ositough.com and select the Color Match tab to look for a suitable match. If you need further assistance, please contact our team at 1-800-624-7767.

Thank you for your question. OSI QUAD is not specifically recommended for application over oil-based semi-transparent stain without testing. The surface must be clean, dry, and free of oils or other contaminants that could interfere with adhesion. If the stain cannot be removed, we recommend testing the sealant's adhesion on the stained surface before proceeding with the entire project.

Thank you for your question. Not knowing the specific details of your project makes it difficult to say the Loctite Clear Silicone Waterproof Sealant is suitable. Please give us a call at 1-800-624-7767 and let us know the details of your application so we can help you.

Thank you for your question. OSI QUAD is not recommended to be sanded.

Thank you for your question. OSI QUAD is not recommended to be used for the project described.

Thank you for your question. OSI QUAD is not recommended for use in the manner described. For best adhesion and performance, painted surfaces should be sanded before applying the sealant.

Thank you for your question. OSI QUAD does not require tooling nor recommended. If you need more information on our product, please visitwww.ositough.com and review the product's technical data sheet.