Sikafloor® CureHard-24 is a one part, clear sodium silicate based liquid to harden and provide an impregnating seal fresh or hardened concrete.
Uses & Advantages
Horizontal old or new concrete surfaces, where a hard surface with light to moderate abrasion resistance is required e.g. warehouses, industrial plants, stores, shopping malls, parking structures, service stations, hangars etc.
as an impreganting sealer on concrete slabs where no specific curing efficiency or standards are required
Suitable for interior or exterior applications as an impregating sealer.
As a desifier in the process of grinding and polishing concrete.
Dust-proofing of prefabricated concrete elements.
Suitable for protection against ingress (Principle 1, method 1.2 of EN 1504-9)
Suitable for physical resistance (Principle 5, method 5.2 of EN 1504-9)
CHARACTERISTICS AND ADVANTAGES
Ready to use
Easy to apply
Improved chemical and abrasion resistance compared to untreated concrete
Reduced dusting of concrete floors
Very low VOC
Good penetration – designed to pentrate, not provide a surface seal
Colourless and odourless
Hardened / old concrete
Surfaces must be sound, open textured, clean, free from frost, laitance, surface water, oils, grease, coatings, all loosely adhering particles and other surface contaminants.
If in doubt apply a test area first.
Note that Sikafloor® CureHard-24 used a a general sealer will not penetrate burnished or fully polished concrete and is not suitable for this appliction.
For best results with new concrete floors wait for 7–14 days after placement or until after cement has sufficiently hydrated prior to treatment with Sikafloor® CureHard-24.
Hardened / old concrete
The substrate must be prepared by suitable cleaning method such as high pressure water cleaning or by ride-on cleaning machines. Allow drying prior to application. All dust, dirt, loose and friable material must be completely removed from all surfaces before application of the product, preferably by brush and / or vacuum.
Hardened Concrete Full hardening – densifying process
Apply in a continuous film using a high volume low pressure spray unit.
To ensure maximum penetration, scrub material into the surface with a soft bristle broom or floor-scrubbing machine (min. 30 minutes), until the material begins to gel and becomes slippery. Wet the material slightly with a water spray and rework it into the surface for another 10 to 20 minutes. After this process, rinse the floor and remove any excess material using a squeegee, wet vacuum or mop.
On porous, rough-textured or broom-finished surfaces, a second coat may be required.
For large surfaces and higher placing rates, mechanical equipment such as ride-on cleaning machines can be also used to place, brush in and remove the excess material from the surface.
Thanks to proceeding chemical reaction the rate of water-tightness increases gradually, whereas maximum sealing and hardening effect occurs earliest after 7 days. Gloss of the surface gradually increases during 30 to 90 days depending upon cleaning frequency.
As a densifier in grind/polish system
Apply Product by spray or squeegee to the surface at the 80 grit stage of grinding. Two applications are recommended. If product is applied at the polishing stage uneven colour may result. Do not use Sikafloor® CureHard-24 as a final sealer on polished, finished floors as a sealer – it will not penetrate and will result in an unsatisfactory outcome that will have to be stripped off.
As a general sealer
Apply with manual spray equipment or roller at a rate of approx 8-10m2 per litre depending on the porosity of the substrate. Apply evenly without any excess product or pooling on the surface. Two coats recommended. Do not allow excess product to remain on the surface – whitening or stickiness of the excess product may occur and leave discolouration. Do not apply as a general sealer on fully burnished/closed/dense concrete surfaces as it will be unable to pentrate.
Colour accuracy disclaimer: We have taken care to display the most accurate visuals of our products. However, we are not responsible for the colour accuracy of the device you are viewing our swatches on. These variations arise due to different computer monitors and devices (make, model and technology, as well as resolution, contrast and brightness control settings) in much the same way a scan will differ from an original image and a colour photocopy. Furthermore, coatings can exhibit variation in perceived colour depending on gloss level and application method. If you require a very specific colour match, please make your selection via actual swatches and colour boards available at our showroom.
Product Disclaimer: Ensure you read all product, technical and safety data sheets prior to application as liability falls on the applicator. All products must be applied in accordance with manufacturer’s recommended method.