The Market-Leading Waterproof Seal for Concrete

Concrete and porous paving, while durable, are constantly exposed to moisture, algae, oil, and freeze-thaw cycles. Without adequate protection, water ingress can lead to structural decay, unsightly efflorescence, and surface pitting.

If you’re looking for the ultimate waterproof seal for concrete, the solution lies in a penetrative sealer that protects concrete from both the inside and out, without altering the surface appearance.

Introducing GK Invisible Stone Sealer, a professional-grade, specialised stone sealer designed to provide long-lasting, invisible protection for concrete and other porous external surfaces.

Why Does Concrete Need a Waterproof Seal?

Concrete and block paving are highly porous. This porosity means they absorb water readily, leading to several common issues:

Freeze-Thaw Damage: In colder months, absorbed water expands when freezing, causing internal stress that leads to cracking, spalling (flaking), and surface breakdown.

Biological Growth: Moisture retention creates the perfect environment for green algae, black spots, and lichen to thrive, making surfaces slippery and unattractive.

Staining: Oils, fuels, and household liquids penetrate deep into the substrate, causing permanent, dark stains that resist surface cleaning.

Efflorescence: Water mobilisation brings internal salts to the surface, creating the white, powdery deposits known as efflorescence.

A quality waterproof seal for concrete is essential to block water absorption while maintaining the integrity of the material.

GK Invisible Stone Sealer: Protection Without Changing the Look

Many standard sealants form a glossy, sacrificial film on the surface of the concrete, which can trap moisture and often peel or yellow over time. GK Invisible Stone Sealer uses a short-chain per-fluorinated polymer technology that is a major step forward in stone and concrete sealers:

Invisible Penetrative Seal: This sealer is formulated to penetrate deep into the pores of the concrete, creating an invisible, breathable barrier. It does not leave a sheen, shine, or film, completely preserving the natural appearance of your concrete or paving.

Superior Water Repellency: The seal works by chemically bonding to the pores, repelling water penetration while still allowing the surface to "breathe." This is crucial because it lets trapped moisture vapour escape, preventing the destructive effects of dampness and efflorescence.

Algae and Stain Resistance: By eliminating water absorption, the sealer starves algae and lichen of the moisture they need to grow, providing long-lasting resistance against biological contamination and making the concrete far easier to clean.

Key Features of Our Waterproof Seal for Concrete

Invisible Finish: Preserves the original colour and texture of the concrete; no yellowing or sheen.

Deep Penetration: Creates a durable internal barrier against freeze-thaw damage and pitting.

Breathable Formula: Allows trapped moisture vapour to escape, preventing efflorescence and damp issues.

Professional Grade: Provides reliable, long-lasting performance suitable for driveways, patios, and block paving.

Enhanced Durability: Increases resistance to general weathering, minimising maintenance needs.

Application and Coverage

GK Invisible Stone Sealer is a ready-to-use, water-based solution designed for easy and efficient application. A single 3-litre container can cover an average area of up to 15m², making it an economical choice for driveways and patios.

For best results, ensure the concrete is completely clean and dry before applying the seal using a low-pressure sprayer or roller. Applying a second coat after the first has dried completely will ensure maximum saturation and long-term protection.

Summary

For the perfect waterproof seal for concrete, look no further than GK Invisible Stone Sealer. This professional-grade sealer uses advanced polymer technology to protect concrete from water, whilst maintaining the surface appearance.