ProJoint PRO-420 ECO Colour Enhancing Natural Stone Sealer – Water Based – 1L, 5L & 25L

ProJoint PRO-420 ECO Colour Enhancing Natural Stone Sealer – Water Based ProJoint PRO-420 ECO is a water-based colour enhancing sealer designed to protect natural stone while bringing out its natural colour, character and variation. Rather than leaving the paving looking completely untreated, PRO-420 ECO enriches the appearance of the stone to create deeper, more pronounced tones with a natural finish. The penetrating formulation helps protect natural stone and compatible concrete surfaces against water, oil, grease, everyday staining and weathering while remaining breathable. Available in 1 litre, 5 litre and 25 litre sizes, it is suitable for everything from smaller projects to large patios and professional landscaping installations. No 8-Week Wait Required Unlike solvent-based sealers such as ProJoint PRO-810, PRO-420 ECO does not require newly installed paving to be left for a minimum of 8 weeks before sealing. Its water-based formulation means it can be applied much sooner in the installation process, making it a particularly useful option when you want to protect and enhance new natural stone paving without a lengthy waiting period. The paving should still be clean and suitably dry before application. For best results, allow approximately 24–48 hours drying time after cleaning before applying PRO-420 ECO, depending on the paving, weather and site conditions. Enhance & Protect Your Natural Stone PRO-420 ECO is ideal when you want more than an invisible sealer. The colour-enhancing formulation brings out the natural tones and characteristics within the stone, helping create a richer appearance while providing long-lasting protection against everyday exposure and staining. Main Benefits ✓ No 8-week waiting period required before sealing newly installed paving ✓ Enhances the natural colour and character of stone ✓ Creates richer, deeper natural tones ✓ Water-based formulation ✓ Penetrating sealer with a natural finish ✓ Breathable – allows moisture vapour to escape ✓ Helps protect against water, oil and grease ✓ Helps resist everyday staining and weathering ✓ Easy application using a foam roller, brush or low-pressure sprayer ✓ Available in 1L, 5L and 25L sizes PRO-420 ECO or PRO-810? Choose PRO-420 ECO when you want to enhance the natural colour of the stone and would prefer a water-based sealer that does not require the 8-week waiting period associated with PRO-810. Choose PRO-810 when you want a solvent-based invisible treatment designed to retain the existing natural appearance of the paving. Available Sizes • 1 Litre – Approx. 10m² Coverage • 5 Litres – Approx. 50m² Coverage • 25 Litres – Approx. 250m² Coverage Coverage figures are approximate and will vary depending on the porosity, texture and condition of the surface and the amount of sealer absorbed. How to Apply Prepare – ensure the paving is thoroughly clean and free from dust, dirt, grease and loose material. Dry – for best results, allow approximately 24–48 hours after cleaning for the paving to dry before sealing, depending on weather and site conditions. Apply – shake the container thoroughly and apply an even coat using a foam roller, suitable brush or low-pressure sprayer. Additional Coats – on porous stone, apply further coats as required in accordance with the manufacturer's application guidance. Protect – allow the sealer to dry and protect the treated surface from unsuitable weather during application and drying. Ideal Uses ✓ Newly installed natural stone paving ✓ Established natural stone patios ✓ Sandstone paving ✓ Compatible limestone paving ✓ Paths and walkways ✓ Courtyards and seating areas ✓ Riven, smooth, honed, flamed and textured natural stone ✓ Compatible concrete surfaces PRO-420 ECO is not designed for porcelain paving. ==specification-part== Product Specifications General Manufacturer Nexus Pro Systems Ltd Product ProJoint PRO-420 ECO Product Type Colour Enhancing Penetrating Sealer Base Water Based Available Sizes 1L, 5L & 25L Finish Colour Enhancing Natural Finish When to Apply Newly Installed Paving No 8-week waiting period required Unlike PRO-810 solvent-based sealer, PRO-420 ECO can be applied much sooner after installation when the paving is suitably prepared. After Cleaning Approx. 24–48 hours drying recommended for best results Actual drying time will depend on the paving material, weather, temperature and site conditions. Surface Condition Clean and suitably dry before application Protection & Performance Colour Enhancing Yes – designed to deepen and enrich the natural appearance of the surface Breathable Yes Water Protection Helps protect against water penetration and associated staining Oil & Grease Protection Helps protect against oil and grease staining Stain Protection Helps protect against everyday staining and dirt Weather Protection Helps protect compatible external surfaces against weathering Approximate Coverage 1 Litre Approx. 10m² 5 Litres Approx. 50m² 25 Litres Approx. 250m² Coverage Note Coverage is approximate and will vary considerably according to surface porosity, texture, condition and number of coats applied. Application Application Method Foam roller, suitable brush or low-pressure sprayer Preparation Ensure the surface is thoroughly clean and free from dust, dirt, grease and loose material. Drying After Cleaning For best results, allow approximately 24–48 hours before sealing, subject to paving type and site conditions. Application Temperature Ideally 5°C to 25°C Drying Time Approx. 60 minutes in suitable dry ambient conditions Additional Coats Porous surfaces may require additional coats in accordance with the manufacturer's application instructions. Suitable Surfaces Natural Stone Suitable where compatible Sandstone Suitable where compatible Limestone Suitable where compatible Concrete Suitable where compatible Porcelain Paving Not suitable / not designed for porcelain paving Surface Finishes Riven, smooth, honed, flamed and textured compatible surfaces PRO-420 ECO vs PRO-810 PRO-420 ECO Water-based colour-enhancing protection with no 8-week waiting period required PRO-810 Solvent-based invisible protection; newly installed paving should be left for a minimum of 8 weeks before sealing Manufacturer Information Manufacturer Nexus Pro Systems Ltd Range ProJoint Sealers & Surface Treatments Manufacturer Guidance Always follow the latest Nexus Pro Systems preparation, application, technical and safety guidance before use. PRO-420 ECO is a colour-enhancing sealer and will intentionally deepen the appearance of many surfaces. Unlike PRO-810, there is no manufacturer requirement to wait 8 weeks after installation before application; however, the paving should be clean and suitably dry before treatment. For best results after cleaning, allow approximately 24–48 hours drying time depending on weather and site conditions. Always test on a small, inconspicuous area before treating the complete installation.