Presidio Chapel Historic Structure Report - Presidio Trust

HISTORIC STRUCTURE REPORTFINAL1: Fair condition: There are early signs of wear, failure or deterioration, thoughthe window is generally structurally sound and performing its intendedpurpose; or there is failure of a single subcomponent of the windowaffecting less than 30% of the window. Some portions of stained glass areout of plane, but no broken glass. Needs treatment in the next 10-15 years2: Poor condition: Deterioration or damage affects more than 30% of thewindow and cannot be simply repaired or adjusted. Stained glass is bucklingand out-of-plane panels. Needs treatment within 5-10 years.3: At rick of imminent failure: Deterioration or damage affects more than 50%of the window, or at rick of imminent structural failure. Stained glass hasmajor buckling, potential water pathways, and/or glass at significant risk ofbreaking. Any storm or strong wind could damage stained glass windows tothe point of needing immediate repair. Needs treatment within 1-5 years.Window Type 1 – Lower Level WindowsPoor drainage and lack of sunlight at the basement light wells is exposing thewindows to excessive amounts of moisture.• Frame – Frames are in fair condition.• Sash – Sashes are in fair/poor condition with rotted bottom rails and jointseparation.• Glazing – Glazing is generally in good condition.• Hardware – Much of the original hardware is extant and in fair/goodcondition, though many of the casement adjusters/stays, surface boltlocks, and sash locks need minor repair and reconditioning to restore fulloperability.Window Type 2 – Main Level Windows (see below for stained glass windows)Generally in good condition, these windows are only deteriorating in cases wherewater collects on the sill.• Frame – Frames are in good/fair condition.• Sash – Sashes are in good/fair condition with some rotted bottom rails andjoint separation.• Glazing – Glazing is generally in good condition.• Hardware – Much of the original hardware is extant, though many of thecasement adjusters/stays, surface bolt locks, and sash locks need minorrepair and reconditioning to restore full operability.Window Type 3 –Stained Glass Windows (Main and Upper Level)Stained glass windows are buckling, showing early signs of deterioration, and areat risk of glazing failure.• Frame – Frames are in fair condition showing early signs of waterinfiltration.• Sash – Most sashes are in good condition, though some are showing signsof deterioration due to water infiltration.• Glazing – Glazing is in fair/poor condition due to buckling, and are at riskof failure.• Hardware – Where hardware exists, all is original, and in good/faircondition.Window Type 4 –Upper Level Windows (excluding stained glass)Due to their relative inaccessibility and significant water infiltration, upper levelwindows and surrounding wall surfaces are severely deteriorated.• Frame – Frames are in fair/poor condition due to major water infiltration.• Sash – Sashes are in fair/poor condition due to water infiltration at the sill.• Glazing – Glazing is generally in good/fair condition.• Hardware – All of the original hardware is extant, though in fair/poorcondition.40MARCH 2012