Masonry

The various mortar and masonry issues will require a combination of solution strategies to mitigate the damage and restore the subject masonry integrity. 

The foundation issues that are causing the structure to shift can be restored through foundation waterproofing.  This method will slow the settling, though not guaranteed to completely halt the effects of the topography.  The following work scope is recommended:

1. Sawcut and remove any concrete or asphalt along the foundation wall and excavate soil/base to bottom of footing.

2. Provide required shoring, with stamped engineering drawings (if required), for egress. 

3. Power wash the foundation and footing

4. Fill in any cracks and install fluid applied membrane waterproofing.

5. Once the fluid applied membrane waterproofing is applied, install drainage mat on the foundation wall per the manufacturer recommendations

6. Acceptable waterproofing manufacturers are Carlisle (CCW) and Tremco. Others manufacturers may be considered but must be pre-approved by Ameresco

7. Install a 6” perforated drain tile at the base of the footing and daylight into the nearest basin/storm sewer system.

8. Backfill excavated area with clean rock in 6” compacted lifts for the entire depth of the foundation wall.

9. New 4” thick asphalt surface will be provided for the sawcut area as part of this scope. Asphalt will be spread in 2” lifts, each compacted with a 10,000 pound roller/compactor. This new asphalt will be the final finished surface/conditions of this Scope of Services.

Note: This is a limited waterproofing measure in the focused subject areas.  It is not guaranteed that this limited measure will completely stop water infiltration and foundation movement.

The various mortar joint failures and spalling brickwork are recommended to receive the following repairs:

1. Cut out existing caulk joints at the coping caps (if any) and install new sealant.

2. Tuckpoint all failed masonry sections on the interior and exterior of the little gym building, and the three-story building structure. 

3. Cut out existing caulk joints at the flashing material and install new sealant.

4. Replace face damaged brick / remove other face damage brick in these areas.

5. Install new weeps at lintels, and reseal head joint.

6. Rebuild masonry corners as needed

7. Prepare areas, and apply “siloxane” masonry wall sealer (or Ameresco approved equal).

8. Repair existing plaster inside the building and paint areas to match. Note: Painting of affected areas only. Paint will match as close as possible to adjacent areas, but an exact match is not guaranteed.

9. Repair existing roof area supporting the tuckpointed elevations

10. Deteriorated seams will receive two (2) layers of Poly-Sil 2500.

11. Termination bars will be addressed on an individual basis as required. New termination bars and sealants will be applied only if required.

12. Perimeter flashing will be caulked and sealed.

13. If required - a coating system will also be installed. System will involve Poly-Sil 2500 (or Ameresco approved equal) in a seamless coat.

Note: Mortar, bricks, paint, etc. –color match the existing color / texture as close as possible, but an exact match is not guaranteed