Specifications include, but are not limited to: PREPARATION Confirm local water run-off ordinances and restrictions prior to cleaning roof. Carefully power wash all roof surfaces with clean water to remove debris, rust, scale, dirt, dust, chalking, peeling, or flaking coatings, etc. Do not force water into the roof system or damage roof surfaces. Rinse at least twice to be sure all cleaning agents or contaminants are completely removed to prevent adhesion issues. If the roof surface becomes contaminated with dirt, dust, or other particles at any time during the application of the roofing system, cleaning measures must be taken to restore the surface to a suitable condition. Ensure roof is dry prior to application. REPAIR All necessary metal seam and flashing repairs must be done according to good construction practices, including the removal of all wet insulation and defective materials as identified through a moisture detection survey, such as an infrared scan and replacement with like materials. All seams must be checked, and any loose or damaged seams or fasteners must be resealed/repaired. Panels rusted through or not structurally sound must be replaced with new panels. Repair blisters, holes, cuts, cracks, splits, or other surface defects with WeatherWeld or equal materials. PERIMETER EDGE ROOF FLASHING SYSTEM: Replace perimeter edge flashing system with new. Ensure existing roof flashings, including sheet metal flashings, base-flashings, and drains or gutters, are in serviceable condition. If items are installed incorrectly, items should be replaced with new.
