Wood Window Conservation, Masonry, Sheet Metal Works. Building Envelope Rehabilitation Project. Historical facade restoration and conservation works including, but not limited to, major window conservation works, wood dutchman repairs, paint removal and re-painting, glazing, glass repairs, sill replacement as well as minor masonry and roofing/sheet-metal repairs. Major civil scope added to the project midday through. This was added in excavation, foundation repairs, drainage, backfill, concrete works such as curbs and sidewalks as well as paving and site restoration including grading, sod, and landscaping.