Bartoline Exterior Filler Powder is a special cement-based formula ideal for repairing cracks, holes and gaps in exterior rendering, brick, stone, wood and most other building materials. Easy to mix and simple to use, this formula will not shrink or crack. With excellent adhesive properties, this Exterior Filling Powder will keep the filler firmly in position, allowing for a wide array of applications including the setting of non-structural bolts.