Specifications include, but are not limited to: Window Components: • Remove and Replace: Remove and dispose existing window, including storm window. All new windows must be labeled showing a U-Factor < 0.27 or equivalent. Labels must remain in place until approved/ inspected by Construction Manager. (Windows will be “1 over 1” style sashes. Window grids will not be included unless noted on the design specifications prior to contracting.) (Building permit w-drawings/ window specifications. required). Remove window weights if present and Insulate weight cavity using spray foam insulation in 1–4-unit size buildings. 5 units + buildings may use equivalent fiberglass insulation in the weight cavity. Caulk inside of exterior window stops and install window unit per manufacturer instructions. Apply low expanding foam around window in rough opening. (MUBEC requires gaps are sealed). Install non-leaded window stops to match existing. Caulk exterior of window installation after install. New components to be caulked primed and painted to match existing, or color agreed upon by owner. No stops or trim components shall be left unfinished. Historically Significant Projects require SHPO PreApproved Replacement Windows. (Typically, Wood frame and sashes with Grids) Windows are to meet Egress code compliance, which may require a window style change. Contractor shall cover any exterior window stop paint exposed when removing storm windows. Follow specifications for coil exterior trim. Subject to Maine DEP Component Removal Method (Chapter 424 Section 6.C.5) • Encapsulation (SPP): Remove All “Loose and Flaking” paint, (including All Edges) using safe paint removal methods. Repair damaged sections if necessary and feather smooth any rough paint edges. All Component IMPACT SURFACES MUST BE SCRAPED TO BARE WOOD at the impact location and a minimum of 2” from the impact edges. Feather smooth the paint transition. HEPA clean and wet wash the component. A Paint Scrape Inspection by the Program Construction Manager is required. Prime entire surface and Paint 2 coats finish. Paint shall contain LBC (Lead Barrier Compound) and meet Maine DEP standards for encapsulation. Color to match existing, or be agreed upon by owner and noted on the design. Provide the owner with remaining encapsulant paint (1/2-gallon min.) at the end of the project. • Paint Removal (STB): Remove Paint to bare substrate on ALL SIDES of the component, using lead safe paint removal methods. Repair damaged sections if necessary. HEPA clean and wet wash the component. A Paint Scrape Inspection by the Program Construction Manager is required. Prime entire surface and Paint 2 coats finish. Color to match existing, or be agreed upon by owner and noted on the design. Provide the property owner with remaining paint (minimum 1/2 gallon) at the end of the project. Subject to ME DEP Paint Removal Guidelines (Chapter 424 Section 6.C.2). Paint Scrape Inspections to verify coating removal and surface preparation before applying the prime and paint/ encapsulation layers are required for these methods, documented with photo(s). • Enclosure with Aluminum Coil Stock (Exterior): Prepare surface by removing obstructions (or decorative molding) that are not structural and repair rot or add wood supports for attaching the enclosure. May be used for Window Troughs if needed. Bend to fit and install aluminum coil stock to cover the entire surface. Wide sections may require additional seams or a relief bend to allow controlled expansion and contraction during seasonal temperature changes. Overlap by 2” Minimum and in a manner that Sheds Water at All Seams. Fasten coil with color coordinated nails through pre-drilled holes minimum 24” O.C. Do not caulk and seal long spans where the metal needs room to expand and contract with the seasons. For components shorter than 6’, caulk seams to prevent dust migration from behind the enclosure. Color to be white, or stock color agreed upon by owner and noted on the design.
