This filler is ideal for repairs to all stonework, timber and plaster. It is simple to use, dries white and can be sanded when dry, although this is usually unnecessary as the product is very smooth. When using externally, be sure to seal with paint or varnish when dry. Suitable for both internal and external use. Dries to a very smooth finish. Ideal for all repairs to timber, stonework and plaster. Ready to use.