Preservation > Buildings > Exterior Wall


Conduct the delivery of water from the exterior envelope, making sure that gutters and downspouts terminate on splashblocks (only if the percolation rate of the soil allows for suitable reentry of the water) or, better, are conducted away from the site to a dry well

Interior Drainage: Install submersible pumps in basement to prevent rising ground water from migrating through basement floor. Connect dehumidifiers to drainage system.

Gutters/Downspouts: Repair and replace damaged or missing parts. Consider replacement using more historically appropriate design and/or materials. Tie into perimeter drainage system.

Remove tree limbs hanging over gutter system, and inspect bi-annually.

Grade: Ideally, clear foundation of plantings within four feet (4'). Regrade to achieve nine inches (9") of clearance between ground, siding, corner boards, or water table. Create positive grade away from structure to facilitate drainage

Masonry foundation: Inspect and monitor foundation for signs of settling. Excavate, inspect and dampproof/waterproof foundation below grade. Repoint using appropriate lime-rich mortar.

Interior foundations: Inspect and monitor interior walls of foundation for signs of settling. In general, do not apply coatings in an effort to reduce migration of moisture from exterior: address the underlying cause of the problem first.







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