The necessary repairs to the exterior building envelope of the Galena Public Library District are: 1. Front (east side) of building a. Patch front limestone step treads and risers using approved limestone patching compound; on front steps, remove existing and install new expansion joint compound with bond breaker at rear of caulk joints. Color to match existing.
b. Replace parget section on two front buttresses with new limestone to match original panels.
c. Remove existing damaged mortar joints removing no material from existing limestone blocks and tuck point limestone field with Type O mortar to match original. Sample mortar submittal required for approval.
d. On existing limestone coping, corbelling, and water table remove existing caulk and mortar joins and install new expansion joint compound with bond breaker at rear of caulk joints. Color sample submittal required for approval.
e. Remove and salvage existing steel handrail at concrete steps at front of building.
Repair concrete as necessary to reinstall steel handrail. Reinstall steel handrail. 2. Rear (west side) of building a. Remove damaged mortar joints and tuck point limestone field.
b. Remove caulk and mortar joints and install new expansion joint compound at limestone coping, corbelling, and water table.
c. Repair damaged limestone corner near elevator addition using new or salvaged limestone to match existing. Mortar color to match other new masonry repairs.
d. Repair two limestone chimneys. Removing and resetting exterior limestone blocks as necessary. Remove and replace all damaged mortar joints as necessary. Removing no material from existing limestone blocks. All tuck pointing to be executed with Type O mortar to match original. Sample mortal submittal required for approval.
3. North and south sides of building a. Remove existing damaged mortar joints and tuck point limestone field Type O mortar to match original. Sample mortar submittal required for approval.
b. On existing limestone coping, corbelling, and water table remove existing caulk and mortar joins and install new expansion joint compound with bond breaker at rear of caulk joints. Color sample submittal required for approval.
c. Repair door threshold at storeroom door
d. Power wash organic material from stone and infill around drains in sidewalk (on north side only). Any cleaners or chemicals to be submitted for approval prior to execution of work.
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