How Do I Choose a Window Installer

Back view of anonymous male fitter in checkered shirt and apron mounting window with hinges near white walls at home

Twelve openings on one stucco house can produce twelve different answers about frame, finish and debris, and the notes kept at window installation san bernardino claudio corallo chocolate begin with the written scope for a window job in San Bernardino, CA. The scope is the document that settles most disputes before a crew arrives with a single ladder.

Retrofit or full frame

Back view of unrecognizable craftsman using cordless screwdriver and assembling window while screwing metal hinge during renovation works in apartment

The scope should state, opening by opening, whether it gets a retrofit or a full frame installation. A retrofit sets the new unit into the existing frame and leaves the exterior finish alone. A full frame job pulls the whole assembly back to the rough opening, which means flashing, stucco cutting and interior trim work. The labor and the finish differ greatly, so one line covering all openings is not enough.

Who repairs the wall

Back view of unrecognizable workman in apron mounting window near drilling machine and doors in flat

Stucco, drywall and interior trim get disturbed on almost every job. The scope should name who patches each one, who matches the texture and who paints. On a stucco house in Redlands or Muscoy, a patch that was never assigned usually ends up as bare mesh and a gap around the frame.

Instructions and warranties

Window manufacturers publish installation instructions, covering shimming, sealant and flashing. Installation that ignores them can affect warranty coverage. The manufacturer's product warranty and the installer's labor warranty are separate documents. One covers failures such as a seal breaking down in insulated glass. The other covers workmanship such as a slider that binds or a leak at the sill. A lifetime warranty does not cover every problem, so read the exclusions on both.

Who is on the roof

Ask whether the crews are employees or subcontractors. That answer clarifies who is responsible for workmanship on site, who carries the call-back and who shows up when a double hung sash will not stay up. It is a plain question, and the answer should be given without hedging.

Comparing the windows

Each proposed window should be identified by product line and by its NFRC rated performance, so the options can be compared fairly. A vinyl window and a fiberglass window can each carry a double pane unit, and the label ratings show what the difference actually is. Mixed styles on one quote, such as casement in the kitchen and a picture window in the living room, should each be listed with their own ratings. Installation quality counts as much as the brand name, so do not let the brand settle the choice alone.

References and debris

Ask for references from homes with similar construction, such as stucco walls, in San Bernardino County or Loma Linda. They show how an installer handles comparable conditions. The scope should also say how old windows and debris will be removed and disposed of, including who hauls the old glass and the cut stucco, and whether the yard is swept for fragments and nails.