A method and apparatus for rotationally applying polymers where the apparatus includes a rotational lining unit with a first support section rotatably secured to a main frame for rotation about a first axis, and a second support section secured to the first support section for rotation about a second axis. The second support section includes a portion for holding an enclosed structure to be lined. The unit also includes drive arrangements for driving the first and second support sections so that an enclosed structure can be held by the holding portion and rotated simultaneously about a plurality of axes.