How far in advance should I order custom-size windows?

Custom-size windows typically require 6-12 weeks lead time, depending on the manufacturer, materials, and complexity of your specifications. Standard vinyl windows usually fall on the shorter end, while wood or specialty configurations can take longer.

Manufacturing and delivery timelines vary significantly by season and supplier capacity. During peak renovation season (spring through early fall), lead times often extend to the longer end of this range. Winter orders may process faster, but installation scheduling becomes the limiting factor due to weather constraints in Ottawa's climate.

Material choice significantly impacts timing. Vinyl custom windows from major manufacturers like Jeld-Wen or Pella typically ship in 6-8 weeks. Wood windows or specialty materials like fiberglass can require 10-16 weeks, especially for complex shapes like bay windows, arches, or oversized units. Triple-pane configurations with specialty glass coatings may add 1-2 weeks to standard timelines.

For Ottawa's climate considerations, ordering during late winter or early spring gives you the best chance of installation during optimal weather. This timing avoids the rush of summer projects while ensuring your new windows are installed before the next heating season. Many homeowners place orders in February or March for May-June installation.

Plan for potential delays by adding 2-4 weeks buffer to manufacturer estimates. Supply chain disruptions, shipping delays, or specification changes can extend timelines. Your installer should provide realistic expectations based on current manufacturer lead times and their installation schedule.

For custom window orders and professional installation scheduling, Ottawa Window Pros can help coordinate timing to ensure your project stays on track with Ottawa's seasonal installation windows.

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