FIG. 9 illustrates a simple flat roof, consisting of timber bearers covered with timberboarding and finished with several layers of tar felt.
图9所示为一个简单的平屋顶它由木承梁组成并铺以木板,再铺几层油毡防水。
2
Internal Windows overlook a triple-height hallway in the centre of the barn, where areas of the original walls are left exposed to reveal a patchwork of stonework, brick and aged timberboarding.