#REFILLING DOUBLEPANE WINDOWS WINDOWS#Pull any old nails or screws sticking out, sand jambs smooth, prime all bare wood and then, when the paint’s dry, rub paraffin–a candle stub will do–along the jambs to allow windows to move easily. total–so there’s room for weatherstripping as well as movement. space between the sash and jamb on each side–3/8 in. Also, if there are people in residence, move cutting and sanding operations outside whenever possible, lay tarps to protect finish floors and vacuum periodically to minimize dust indoors.įirst, for operable sashes (as opposed to ones that don’t move), there should be a 3/16 in. It might make sense, say, to remove and repair all sashes at the same time, but only if you’ve carefully noted the location of all trim pieces and sashes beforehand. As older windows often contain lead-based paint, a HEPA-rated respirator and a HEPA vacuum to capture dust are must-haves. Safety glasses with wraparound lenses will protect your eyes from glass shards, irritating dust and dangerous projectiles should a power tool strike a hidden nail or screw. Sturdy gloves with rubberized palms are essential to avoid cuts and to provide a secure grip on heavy window sashes. To undertake this task, however, here are a few common sense suggestions to supplement the techniques shown in the photo sequence. The photos above show how the pros at Wooden Window refurbish double-hungs, so we’ll let them do the talking. In Part Two we will see what to do if sashes are swollen or out of square, lack weatherstripping or have built-up paint. In this first installment, we’ll focus on correctly sizing sash weights, replacing sash cords, and lubricating pulleys. Refurbishing double-hung windows can be complex, so we’ll divide the topic into two postings. For that reason alone, it makes sense to refurbish rather than replace them when they get tired and don’t work so well. Windows built 50 to 100 years ago often were constructed from fine-grained, rot-resistant fir, cypress, or redwood, woods that are no longer available.
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