Poor condition of roofs in terms of decay of shingles and loss of tar-based surface treatments has been revealed in a number of churches at various geographical locations in mid-Sweden. The conditi...

中文翻译：

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瑞典中部教堂屋顶和外墙木瓦中长期暴露的焦油分析

瑞典中部不同地理位置的许多教堂都显示出屋顶状况不佳，木瓦腐烂和焦油基表面处理丧失。条件...