Why does it not crack when painted?
It is formulated to prevent craze cracking and discolouration under most water-based and synthetic paints, and it accommodates up to 12.5% joint movement, so the painted line stays intact as the joint flexes.
How soon can I paint it?
Within about 1 hour. That is what makes it handy when decorating, as you do not have to wait overnight before painting.
Where can I use it?
Sealing between stairs, walls, ceilings, skirtings, window sills and frames, concrete and brickwork, and filling cracks and screw or nail holes, inside and out.
Does it need a primer?
No, it adheres to most surfaces without a primer and is non-corrosive to metals.
How is it different from Caulk-Mate and Super-Mate?
No Crack is a flexible, non-cracking decorators caulk; Caulk-Mate is a one-hour decorators caulk; Super-Mate is a siliconised acrylic. All overpaint. Pick No Crack where joints flex and you want to avoid craze cracking.
Can it get wet?
Keep it dry for at least 5 hours after application. It is for interior and exterior use in dry conditions, not for permanently wet joints, where a sanitary silicone is better.