凡是表面不做抹灰或镶面的砖墙称为“清水墙”。清水墙常年暴露在外面,经受风吹日晒雨淋,酷暑严寒,它的防水防冻就显得十分重要,因此请水墙都应该勾缝。勾缝的主要作用是防止冷、热空气的渗透,以加强墙体的保温和隔热 Any brick wall that is not plastered or veneered is called a “dry wall.” The dry wall is exposed outside all year round. It is weathered by the sun, rain and cold. It is very important for its waterproofing and freezing protection. Therefore, the water walls should be anchored. The main function of the jointing is to prevent the penetration of cold and hot air to strengthen the insulation and heat insulation of the wall.