1. Will this actually stay put on a sloped ramp, or does it need formwork?
Its thixotropic consistency means it holds its shape once applied rather than settling under its own weight, so it doesn't slump on an incline the way a flowing compound would. For steep or unsupported edges, a temporary edge guide still helps control the final shape while it sets.
2. Can I use this to patch a small localised dip, or is it only for larger areas?
It works well for both. Since it doesn't migrate once placed, it's suited to contained patches and small depth corrections just as much as full ramped transitions, without needing to box off the whole area.
3. Does it bond properly to smooth, power-floated concrete?
Very smooth or cast concrete can be harder to bond to. For these surfaces, mixing the product with Techno TC-LAX instead of plain water, in a 1:1 ratio, improves adhesion rather than relying on water alone.
4. Can this go over cracked concrete, or does the crack need fixing first?
Cracks need to be identified and sealed first, typically with an epoxy repair resin, before applying Techno Gap over the top. Applying directly over an unsealed crack risks the same crack reflecting through later.
5. Is this suitable under a waterproofing membrane, or only under tiles?
Yes, it's commonly used as a substrate preparation layer before waterproofing membranes as well as before tiling, provided it's fully cured and primed according to the membrane manufacturer's requirements first.
