Sandtex Brickwork Waterproofer & Protector Clear 5 Litre without any links:

Sandtex Brickwork Waterproofer & Protector Clear is a high-performance, silicone-based product designed to protect porous masonry surfaces from water damage while allowing them to breathe naturally.

Key Features:

Water Repellent: Forms an invisible barrier that prevents water from penetrating brick, stone, concrete, and other porous surfaces.
Breathable: Allows moisture within the surface to escape, reducing the risk of trapped dampness and frost damage.
Clear Finish: Dries clear, preserving the natural appearance of treated surfaces without altering their look.
Protection: Ideal for use on brickwork, render, pointing, concrete, stone, and plaster, offering long-lasting protection against weathering and water damage.

Application Guidelines:

Surface Preparation: Clean the surface thoroughly and make sure it’s dry. Remove any loose or flaking materials. If there’s any mould, treat with a fungicidal wash and allow the surface to dry completely before applying.
Application: Shake the container before use. Apply liberally with a brush or roller. For best results, apply a second coat within one hour of the first.
Drying Time: It will be touch dry in about 4–6 hours, depending on the surface texture and weather conditions.
Coverage: The coverage is approximately 6 square meters per litre, although this can vary based on the surface's absorbency and texture.

Sandtex Retail Brickwork Waterproofer & Protector Clear 5 Litre