1. How do I get the water ratio right when mixing?
The mix needs to be pliable and workable, not too dry or too wet. Too little water weakens the finished screed, while too much increases shrinkage and can make it unreliable to tile over later. It's worth following the exact ratio on the data sheet rather than judging by eye alone.
2. What equipment do I need to mix and lay it?
It can be mixed in a standard concrete mixer, a screw mixer, or a continuous blending machine, and should be blended for no more than 4 minutes, don't leave it turning in the mixer longer than needed.
3. Do I need to leave gaps or edging around the room when laying the screed?
Yes. Compressible material should be placed around the perimeter walls and any pillars to allow for natural movement as the screed cures, rather than pouring it edge to edge.
4. Does it need a primer before or after laying?
After the screed has cured, prime it before installing a waterproofing membrane or certain floor coverings, using a porous or non-porous primer depending on the surface. Check the current data sheet for the right primer and drying time for your application.
5. Is it suitable for outdoor use, or indoor only?
It's suitable for both indoor and outdoor applications in residential, civil, and industrial settings, provided it's installed within the recommended thickness range.
