Drive Birchwood's grid of streets northwest of Squalicum Creek and you will see Bellingham's mid-century era intact: 1950s and 1960s ramblers with low rooflines, broad living-room picture windows, and — all too often — the original single-pane glass still sitting in the openings. Alpine Exteriors upgrades Birchwood homes to modern windows that keep the neighborhood's clean lines while finally sealing out the cold.
The Rambler Window Story
When these houses went up, energy was cheap and window technology was simple: aluminum frames, single glazing, and a picture window as the front elevation's centerpiece. Sixty-plus winters later, the results are predictable. Aluminum conducts the cold straight indoors, so frames sweat with condensation whenever the temperature drops — and years of that moisture stain sills, feed mildew along the glass line, and rot the wood beneath the stool. On first-home and fixed-income budgets alike, the heating bills tell the same story every February.
Birchwood's location adds exposure. The neighborhood sits open toward Bellingham Bay's weather, and it takes real punishment when Fraser Valley outflow events push freezing northeast winds through Whatcom County. Single-pane glass simply has no answer for either direction.
There is also a comfort problem nobody warned buyers about in 1958: the picture window is usually the largest single heat leak in the house, positioned exactly where the family sits in the evening. Homeowners tell us the living room feels several degrees colder near the glass on a windy night, and they are not imagining it — old single glazing pulls heat away from anything close to it.