Sikafloor Curehard 24 – 20ltr

SUBSTRATE QUALITY

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.

SUBSTRATE PREPARATION

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.

APPLICATION

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.