Monitor basement humidity and avoid relative humidity levels above 60 per cent. Use a dehumidifier to maintain relative humidity below 60 per cent.
Clean or replace air-conditioning filter, and clean or replace ventilation system filters if necessary.
Check basement pipes for condensation or dripping and, if necessary, take corrective action; for example, reduce humidity and/or insulate cold water pipes.
Check the basement floor drain to ensure the trap contains water; refill with water if necessary.
If you have a plumbing fixture that is not used frequently, for example, a laundry tub or spare bathroom sink, tub or shower stall, run some water briefly to keep water in the trap.
Deep clean carpets and rugs.
Vacuum bathroom fan grille.
Disconnect the duct connected to your clothes dryer, and vacuum lint from duct, the areas surrounding your dryer and your dryer’s vent hood outside.
Check security of all guardrails and handrails.
Check smooth functioning of all windows, and lubricate as required.
Inspect window putty on outside of glass panes of older houses, and replace if needed.
Sand and touch up paint on windows and doors.
Lubricate door hinges, and tighten screws as needed.
Check for and replace damaged caulking and weatherstripping around mechanical and electrical services, windows and doorways, including the doorway between the garage and the house.
Lubricate garage door hardware, and ensure it is operating properly.
Lubricate automatic garage door opener motor, chain and other moving parts, and ensure that the auto-reverse mechanism is properly adjusted.
Inspect electrical service lines for secure attachment where they enter your house, and make sure there is no water leakage into the house along the electrical conduit. Check for overhanging tree branches that may need to be removed.
Check exterior wood siding and trim for signs of deterioration; clean, replace or refinish as needed.
Remove any plants that contact — and roots that penetrate — the siding or brick.
From the ground, check the general condition of the roof and note any sagging that could indicate structural problems requiring further investigation from inside the attic. Note the condition of shingles for possible repair or replacement, and examine roof flashings, such as at chimney and roof joints, for any signs of cracking or leakage.
Check the chimney cap and the caulking between the cap and the chimney.