Why is the winter entry walk done before the cold?
UMass says the insects overwinter indoors, and they look for their entries in the autumn. A walk before the cold finds those entries while the materials can still be fitted in mild weather.
Caulk and foam set best in mild weather, and a walk done in late summer gives the materials time to cure before the frost. A walk done after the first freeze is less effective, because the materials set less well and some insects may already be inside.
The insects respond to warm days, and a sealing job done before the cold removes the route before the first warm spell of the winter.
What does the walk look for at the eave and the gable?
The eave, the gable and the soffit are the points where the roof meets the wall. A gap in any of them gives the insects access to the attic and the upper rooms, which are the sheltered spaces the walk checks first.
The eave is checked for a joint that has opened, and the soffit for a board that has lifted. The gable vent is checked for a screen that is torn, bent or missing. Each is recorded with its side of the house.
A high eave is checked from a stable ladder or from a platform. A section that cannot be reached safely is listed as not checked, and the homeowner is told so.
What about the openings a homeowner cannot see?
Some openings are hidden by a shrub, a gutter or a fixed fixture. The walk moves what it safely can and notes the rest, so the list covers the house and not only the parts that are easy to see.
A shrub against the wall can hide the foundation and the lower frame of a window. The technician asks the homeowner to cut the shrub back or allows the work to clear the way.
A cable or a pipe that enters through a hidden corner is checked with a light from inside where possible. Where it cannot be checked, the report says so, and the spring check is set for it.
What the homeowner keeps after the walk
The homeowner keeps the list of openings, the materials used and the date of the spring check. The list is the working document for the next season and for any later visit.
The list gives each opening a number, a position and a status. A sealed opening is marked sealed, and an opening that could not be sealed is marked open with the reason. The homeowner can see at a glance what remains.
The list is kept with the house records. A homeowner who sells the house or has the work checked later will find the list useful, since it shows what was done and when.
What a homeowner should expect on the day
On the day, the technician arrives with the list from the last season, walks the outside, then the inside, and reports as the walk goes. The homeowner is asked to be present for the inside check, and to show any draught or light seen during the winter.
The outside walk is quick when the list from the last season is used, because the openings to check are already known. The technician notes any new opening and any opening that has moved.
The inside check is done with the room dark and the window lit. The homeowner is asked to show any draught they have noticed, and the technician records the position and seals it or lists it for the next visit.
Work that waits for warmer weather
Some sealing needs warmer weather to set properly. Those items are scheduled for a mild day, and the report says why they are waiting.
Caulk and some foams set poorly below a certain temperature, and a homeowner should not expect a cold-day seal to last. The technician records each item that is waiting, and books the return visit for a mild day.
Until the return visit, the homeowner is asked to keep the window or the door closed, since an open gap is the route the insects use.
A homeowner should expect the list to be longer on an older house. Each opening is numbered and placed, and a homeowner who reads the list against the house can see the work that remains. The list is not a sign of failure; it records what the house needs, and it is the basis for the spring check and for the work of the following autumn.
A homeowner can use the list in the spring to see which openings were sealed in the autumn and which were not. The spring check is short when the list is complete, and it is the moment to replace any screen or seal that the winter has damaged, before the next cold season begins.