Grout and cement joint cleaner C-12F CTS Chemistry
Cleans white and coloured grout and cement joints. The alkaline product (pH approx. 11.5) is ready to use - apply it straight onto the joint, no dilution needed.
Concrete and floorsConcrete and floorsC-12F is the only product in the C range that comes ready to use - no measuring, no diluting. You apply it straight onto the joint.
It is made for one job: white and coloured grout, and cement joints. The alkaline formula (pH approx. 11.5) works on the discolouration that ordinary floor washing leaves in the joint.
The handy 0.75 l pack suits spot work - C-12F is for cleaning joints, not whole floors.
Concrete accepts a sealer only when it is dry, clean and seasoned. A fresh slab is still giving off mix water and will push any coating off with it.
- Remove cement laitance and mortar residue - left under the sealer, they come away with it.
- Degrease the surface. Oil stains need an alkaline cleaner, not a detergent.
- Primed or painted floors need the old coating removed; a penetrating sealer will not bond through paint.
- Check the moisture in the substrate. Some solvent-based products require below 5-6 % - you will find the exact figure in the technical data.
- Ventilate the room if you are working with a solvent-based product indoors.
A new floor and fresh precast units need time to season - for precast concrete it is usually around 28 days.
Before sealing the whole area, test on a patch hidden by a planter or in a corner of the patio. The same product can read differently on two batches of the same material, and on a surface with old coating left on it, it will not bond at all.
- Coats
- 1
- Application method
- brush, brush (stiff), sponge
- Dilution
- Ready to use - do not dilute
- Where to use
- indoors, outdoors
- Form
- ready-to-use product
- Density
- approx. 1 kg/dm³
- pH
- approx. 11.5
- Manufacturer's pack size
- 0.75 l
- Will a sealer stop my floor dusting?
Yes, if you choose a product that forms a polymer layer - it binds the loose particles on the surface and gives a dust-free finish. It is not a substitute for a hardener where the concrete itself is dusting because it was poorly floated - the problem is then in the slab, not on it.
- Can I seal concrete indoors?
Yes - choose a product approved for indoor use. With a solvent-based one, ventilate during application and for the period given in the product instructions.
- What do I do about old oil stains?
Remove them before sealing, with an oil stain remover. A sealer applied over a stain seals it in and fixes it - oil will not evaporate through a sealed layer.
- Does a sealer protect against road salt?
It helps - it limits the ingress of water and the salts dissolved in it.
- Is it suitable for epoxy grout?
It is not made for it. If you want to use it anyway, test in an inconspicuous place first.
- Will it bring the grout back to its original colour?
That depends on whether the discolouration is a deposit or a permanent stain in the binder. A deposit comes off; a dye that has entered the cement usually does not.
How much will you need?
Consumption depends on how absorbent the surface is and how you apply the product.
Write to us with the area and the type of surface - we will help you work out how much you need.
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