Installing windows in a Lehigh Valley winter
Windows can be installed in cold months, but the materials around them have temperature limits that a careful crew respects.
Why cold matters
Sealants, caulks and foams cure properly only within a temperature range printed on the product. Below it, they can skin over without bonding. In the Lehigh Valley, with a colder climate than coastal Pennsylvania, many days from late fall to early spring are outside that range for some products.
What a careful crew does
- Chooses sealants and foams rated for the temperature, including low-temperature products.
- Works one window at a time and covers the opening between steps.
- Keeps tools and materials warm until use.
- Reschedules in severe cold or precipitation.
- Checks seals again in warmer weather if needed.
Planning for the season
- Lead times
- Windows are made to order, and lead times can stretch. Order early if you want a spring install.
- Heat loss
- Each open window loses heat. Ask how long openings will be uncovered, and close doors to the room.
- Climate zone
- Allentown is in IECC climate zone 5A, so airtight installation matters in winter.
Keep reading on this site
Permits and historic rules
Historic district certificates, permits and lead-safe work.
Installing in rowhomes
Access, shared walls and sealing against old brick.
Window installation in Allentown
Rowhomes, historic districts and city permits.
Window installation in Bethlehem
Moravian-era streets and South Side rows.
Questions people ask
Is winter installation worse?
Not if done right, but it demands attention to materials and weather. Ask for details.
Will my home be cold during the install?
Briefly, in the room being worked on. Crews work window by window.
Can the work be rescheduled?
Ask about the rescheduling policy before signing.