HISTORIC STRUCTURE MAINTENANCE

• Caulk joints between window frame and the wood or masonry opening.

• Reglaze (window putty) windows to make sure glass is secure and water tight.

• Install appropriate storm windows to protect original windows and improve the thermal efficiency of an older or historic window.

• Check window locks to make sure they fasten securely for best performance.

Masonry

If maintained properly, masonry construction can last indefinitely. Through time, mortar joints deteriorate which can lead to water infiltration causing exterior and potential interior damage. Stresses on the structure as a result of water infiltration and deterioration of structural members, unusual loading or expansion and contraction of building components, such as rusting steel lintels, often cause step-cracking in the masonry joints, bulging of the wall surface, and potential failure of the masonry wall.

Inspect annually in the spring in both dry and wet weather. Walls should be even and show no signs of cracks. When walls are bulging and cracks appear, seek professional guidance as to the cause of the stress and appropriate corrective measures. For more information, see Preservation Brief 2 Repointing Mortar Joints in Historic Masonry Buildings at http://www.nps.gov/tps/how-to-preserve/briefs/2-repointmortar-joints.htm.

• Repoint masonry where mortar is crumbling or missing.

• Remove climbing vegetation and mildew from surface.

• Clean surfaces, beginning with water and a natural bristle brush and avoid the use of abrasive methods.

Historic Structure Maintenance

Storefront

Storefronts serve as the face of the business within and are often the first place an owner will update a building. Regular maintenance, replacement of deteriorated components, scraping, sanding and repainting, is needed for all storefronts and will preclude the need for remodeling.

Metal Elements

Steel support beams between the storefront and upper levels are vulnerable to failure if they are allowed to rust. Routine inspection, scraping and painting is the best protection for maintaining the viability of steel support beams. Decorative elements on the building’s exterior should be inspected to make sure they are firmly attached, and should be repainted when necessary. Rusting and loose decorative elements not only detract from the appearance of the building, but also become a safety hazard to pedestrian traffic below.

Hvac Systems And Plumbing

• Replace system filters per manufacturer’s recommendations.

• Have systems serviced and cleaned per manufacturer’s recommendations.

• Inspect sump pump.

• Clean air vents.

Site

• Inspect annually or after a major storm.

• Remove excess mulch and vegetation from foundation.

• Prune landscape back from the structure.

• Check foundation for signs of rodent or insect infestation.

• Clean window wells.

• Clear drain grates of debris.