The most important factor in finding a good crack filling solution is to ensure that cracks to do reappear. Here we recommend SmartCare Crack Seal for minor hairline cracks (upto 3 mm) on walls. For cracks between switchboards, window frames, door frames use SmartCare AkrylMax. Since Akrylmax is a paintable product, the cracks would be covered neatly under paint. For cracks in bathrooms, masonry surfaces use SmartCare Unyverseal. Unyverseal is a silicon sealant that comes in 3 colours (white, black and transparent) and can cover such joints effortlessly. For exterior cracks use Textured Crack Filler (for cracks upto 10 mm), to make sure the filled crack blends effortlessly with the exterior textured walls of the house.