Winterize Your Home Exterior: A Western PA Fall Checklist

roof

A fall home maintenance checklist for a Western Pennsylvania house comes down to eight jobs done in order between mid September and the end of October: inspect the roof, check the flashing, clean and secure the gutters and downspouts, look over the soffit and fascia, seal the siding and caulk joints, tighten windows and doors, check attic insulation and ventilation, and shut down the hose bibs before the first hard freeze. Most of it takes two weekends, and the roof and gutter items matter most because ice dams in January start with what is on your roof in October.

We have watched fall turn into winter across Westmoreland and Allegheny County since 1995, and the houses that come through without a leak or an ice dam are the ones that did this list. Here it is, with a suggested week for each.

Why does the order of fall maintenance matter?

Because water runs downhill. If you seal the windows in September and clean the gutters in November, the overflow has already soaked the siding and window trim for two months. Start at the top and work down. Also because the trades book up. Fall is the busiest season for every exterior contractor around Pittsburgh, so anything that needs a professional should be scheduled in September for an October date.

What should I check first: the roof

  1. Week of September 14: Roof surface. Walk the yard with binoculars on a bright morning and look for missing, lifted, or curled shingles, dark patches where granules are gone, and any sag along the ridge. Check the downspout outlets for granules. Plan to trim any limb within ten feet of the roof. A roof over 20 years old or showing these signs should get a professional look now. Our roof inspection checklist walks through this in detail.

  2. Week of September 14: Flashing. Flashing is the metal where the roof meets anything else: chimney, plumbing vents, skylights, dormer walls, and valleys. From a ladder or with a zoom lens, look for rust, lifted edges, cracked sealant, and gaps where step flashing meets siding. In our Westmoreland County service calls since 1995, roughly two out of three winter roof leaks trace back to flashing rather than shingles.

What should I do about gutters and downspouts in the fall?

  1. Week of September 21, and again the week of October 26: Gutters and downspouts. Clean everything out, then run a hose and watch the water. It should move toward the downspout with no puddles and no drips from seams. Standing water means the gutter has pulled loose or was never pitched, so tighten or replace the hangers. Make sure every downspout extends at least four feet from the foundation, because water at the footer in November is ice in the basement wall in January. The late October pass catches the heavy leaf drop from the oaks. If you have a lot of trees, gutter guards pay for themselves in ladder time, and if the gutters are rusted or pulling away, price seamless gutters before the ice comes.

What are soffit and fascia and why check them before winter?

  1. Week of September 28: Soffit and fascia. Fascia is the board the gutter hangs on. Soffit is the vented panel under the eave. Walk the perimeter and look up. Peeling paint, soft spots, and dark stains mean water has been getting behind the gutter. Push on suspicious fascia with a broom handle. Check the soffit vents for paint or nests, because those vents feed the attic ventilation that prevents ice dams. Squirrels look for winter quarters in October.

How do I seal siding and caulk joints before winter?

  1. Week of October 5: Siding and caulk. Check every place the siding meets something else: window and door trim, corner boards, the foundation line, light fixtures, hose bibs, the dryer vent, and the deck ledger. Cut out cracked caulk and run fresh exterior grade polyurethane or silicone on a dry day above 45 degrees. On vinyl, look for loose panels and J channel pulling away. Water that gets behind siding in October freezes in December and pushes the panel off the wall. Soft sheathing behind a loose panel is a call to our siding team, not a caulk gun.

What is the fastest way to tighten up windows and doors?

  1. Week of October 12: Windows and doors. On a breezy evening, move a lit incense stick around every window sash and door. Where the smoke pulls, add weatherstripping. Replace door sweeps that no longer touch the threshold, tighten sash locks, and recaulk the exterior frames. Windows with fog between the panes, rotted sills, or single pane glass are past weatherstripping and belong on the replacement list. Our windows page explains what to expect from a fall install.

Why does the attic matter for a winterized exterior?

  1. Week of October 19: Attic insulation and ventilation. Go up with a flashlight on a cool morning. Insulation should be deep enough to hide the ceiling joists, which for most Pittsburgh area homes means 14 to 18 inches. Make sure baffles keep the soffit vents open. Check the underside of the deck for staining, frost, or rusty nail tips, which mean moist house air is getting in, and make sure bathroom fans vent outside. Ice dams form when attic heat melts roof snow that refreezes at the cold eave, so a cold, dry attic is the real ice dam prevention. The ENERGY STAR guide to sealing and insulating shows where the air leaks usually are.

What do I shut down before the first hard freeze?

  1. Week of October 26: Hose bibs, walkways, and last pass. Disconnect and drain every hose. Shut the interior valve to each outside spigot and open the spigot to drain the line. Frost free hose bibs still need the hose off. Blow out the irrigation system. Walk the steps for heaved slabs and loose railings, stock the ice melt, and do the second gutter cleaning while you are out there.

Fall home maintenance checklist: what to do and who should do it

Task Why it matters in Western PA Do it yourself or call a pro
Roof surface inspection Finds storm damage and worn shingles before snow and ice Yourself from the ground, pro if the roof is over 20 years
Flashing check Most winter leaks start at flashing, not shingles Pro for repairs, yourself for a visual from a ladder
Gutter and downspout cleaning Clogged gutters overflow onto siding and feed ice dams Yourself on a one story, pro on a two story or steep lot
Soffit and fascia inspection Soft fascia loses the gutter, blocked soffit vents cause ice dams Yourself to inspect, pro to replace
Siding and caulk Water behind siding freezes and pushes panels off Yourself for caulk, pro for loose panels or soft sheathing
Windows and doors Drafts cost $30 to $60 per bad window per winter Yourself for weatherstripping, pro for replacement
Attic insulation and ventilation The real ice dam prevention Yourself to inspect, pro for baffles, venting, or added insulation
Hose bibs and walkways Burst pipes and falls on ice Yourself

Frequently Asked Questions

When should I winterize my house in Pittsburgh?

Start in mid September and finish by the end of October. The first hard freeze around Pittsburgh usually lands between late October and mid November, and caulk and sealant need dry days above 45 degrees to cure. Leave the final gutter cleaning for the last week of October after the oaks drop.

How do I prevent ice dams on my roof?

Keep the attic cold and dry by adding insulation to 14 to 18 inches, keeping the soffit vents clear with baffles, and making sure the ridge vent is open. Clean the gutters so meltwater has somewhere to go. Heat cables are a patch, not a fix, and a roof with recurring ice dams usually needs ventilation work.

Should I clean my gutters before or after the leaves fall?

Both. Clean them in late September to clear summer debris and check the pitch and hangers, then again in the last week of October after the heavy leaf drop. In neighborhoods with a lot of oaks, a third pass in mid November is not unusual.

What fall home maintenance should I hire a professional for?

Anything on a two story roof, any flashing repair, and gutter, siding, or window replacement. A free professional roof inspection in the fall is worth it on any roof over 15 years old because the inspector sees what binoculars miss and documents storm damage before winter buries it.

If this list turns up something you would rather not climb up and fix yourself, we offer free inspections across Irwin, Norwin, North Huntingdon, Murrysville, Monroeville, Greensburg, the South Hills, and the greater Pittsburgh area. Fall schedules fill by October, so call (724) 515 5163 or start with our roof inspection checklist.