| 摘要 |
Window frames and door frames of wood must often be protected against dry-rot and mould. Therefore, they are most often made of impregnated wood. However, this gives rise to such a great environmental risk that there is need for a subsequent, effective impregnation of the frames, which can hereby be manufacturated from unimpregnated wood. By providing the frame pieces (1-5) according to the invention with at least one channel (6, 8, 16), which extends longitudinally to and in around the centre of the piece, and further by mutually connecting this or these channels by means of a hole (7), it is possible, after the frame has been assembled and after mounting in the building, to introduce a fluid impregnation agent into the channels (6, 8, 16) via the hole (7). The frame is hereby provided with impregnation agent from inside the exposed places in the frame, and this impregnation can be maintained by suitable subsequent filling with impregnation agent. |
