External rendering - Application

Many modern renders are applied in a series of coats, which should become thinner and weaker towards the final coat. The majority of new walling will be covered adequately by two coats of render, though some pre-mixed renders (see later) are designed to be applied as a single coat. For self-mixed renders in exposed areas or where lath is used, three coats may be required. Some very undulating or pitted surfaces may require an additional dubbing-out coat to fill voids prior to the first coat.