Fall Home Maintenance Checklist: Painting, Caulking and Repairs

The short answer: Fall in Minnesota is for sealing the house before freeze-up: recaulk the joints that opened over summer, spot-prime any bare wood while the siding is still above 50 F in the afternoon, and touch up the doors and trim that took the most sun. Full repaints belong in summer. Fall is for the small paint and caulk work that keeps water out until spring.

Here is the list our crew works through on our own houses in September and early October, in the order it matters.

Why fall maintenance matters more in Minnesota

Water that gets into a joint or a piece of bare wood in October does not drain out in November. It freezes. Ice expands, the joint opens wider, the ice melts on the next sunny afternoon and more water gets in. By March a hairline crack in the caulk under a window has become a gap, and the paint on the sill below it is lifting.

The other Minnesota mechanic is snow against the house. The bottom course or two of siding, the bottom foot of every corner board, and the trim beside the garage door sit in a snowbank from December to March. Any bare spot or open seam down there is soaking the whole time.

So the point of fall maintenance is simple: close every open joint and cover every bare spot before the first hard frost, and do it while the surfaces are still warm enough for caulk and primer to cure.

1. Check trim and sills for soft wood

Start with a walk around the house with a screwdriver in your pocket. Paint trouble shows up first where water sits, so that is where to look, sunny sides first:

• The bottom of every window sill, especially where the sill meets the side casing.
• The bottom foot of each corner board.
• The fascia behind and below the gutters, and anywhere the gutter has overflowed.
• The trim on either side of the overhead garage door and the bottom of the service door jamb.
• The bottom of any wood column or porch post.

Anywhere the paint is cracked or lifting, press the screwdriver in. Sound wood stops the point. If it sinks in with almost no push, mark it. That board needs to be replaced before it gets primed and painted, not filled, and our rot and trim repair page shows what that involves.

While you are walking, look at the paint itself. Paint that has cracked along the grain or is peeling at the bottom edge of the boards means that wall is due for a repaint next summer. Note which walls, because that is what a painting estimate gets built around.

2. Recaulk the joints that opened

Caulk fails on a schedule. The joints that move most, and therefore open first, are:

• Where window and door trim meets the siding.
• Where the corner boards meet the siding.
• Butt joints between lengths of lap siding, especially on hardboard.
• Where a deck ledger or a light fixture penetrates the wall.

Cut the old caulk out. Painting over failed caulk or laying a new bead on top of a cracked one lasts a season at most. Use an exterior-grade product rated for the movement, and give it a dry surface above about 40 F with a few hours before the temperature drops. We caulk the south and east sides in the morning and the north and west after lunch on cool days, so every joint gets its curing time.

Once the new bead has cured enough to paint, which the label will tell you, put a coat of trim paint over it. Bare caulk on a white trim line catches dirt and yellows, and a coat of paint makes the joint disappear into the trim.

There are joints that should not be caulked: the bottom edge of lap siding, the weep holes in window frames and the gap under a sill. Those are drainage paths. Sealing them traps water behind the siding, and that water finds its way out through the paint as blisters.

3. Prime and spot-paint bare wood

Anywhere the paint has peeled to bare wood, that wood is weathering. Fall is the time to seal it, even if the full repaint is next summer.

Scrape the loose paint, sand the edge so the old paint feathers into the bare spot, and prime with an exterior primer while the surface is above 50 F. On cedar, use a stain-blocking primer, because cedar tannins bleed through ordinary primer and show as brown streaks under a light color. That work usually means afternoons only in late September, sunny walls first, and nothing after about three o’clock once the sun drops and the dew point comes up.

A primed spot will look patchy over the winter. It will also stop the wood from graying and checking, and it gives us a sound surface to paint in May instead of weathered wood that needs extra sanding first. If you have a quart of the house color left, a coat over the primer on a warm afternoon makes the patch nearly disappear until spring.

If the whole house is due, this is also when to get on the list. We book exterior painting in order starting in May, and the fall walkthrough is how the early slots get filled.

4. Check the fascia, soffit and gutters

Clean the gutters after the leaves drop, and while you are up there, look at the paint on the fascia behind them. Gutters that overflowed under an ice dam last winter leave a stain line, and the paint below that line is usually the first on the house to peel. Scrape and spot-prime it if the afternoons allow, and if the board feels soft, add it to your list from step 1.

Check that the soffit panels are tight and the vents are clear. A soffit that has pulled loose lets warm attic air out at the eave, which feeds the next ice dam. Painted wood soffit sits in shade most of the day and usually holds paint longer than the fascia. If it is peeling anyway, mention it at the walkthrough, because peeling in a spot the sun never reaches usually points to moisture coming from the attic side.

5. Look for cracked or peeling siding

Most of the housing stock in the northwest ring built from the late 1980s through the 2000s, including a lot of Rogers, carries hardboard or composite lap siding. It holds paint well when the edges are sealed and fails from the bottom edge when they are not.

Walk the house and look for boards with a swollen bottom edge, butt joints that have opened, and paint cracking along the laps. That bottom edge matters more than any other part of hardboard. When we paint it, the underside of every course gets primer and both finish coats, because the paint on that edge is what keeps water out of the board. If you see bare or swollen edges this fall, note the walls and seal the worst of them with primer on a warm afternoon. A badly swollen board gets replaced and painted to match when the house is painted.

6. Check the deck before winter

Walk the deck before the snow covers it. Tighten railing posts that wobble, note any board that feels springy underfoot, and look at the stair treads and the ledger where the deck meets the house. Sweep leaves out of the gaps between boards so water can drain instead of sitting against the wood all winter.

7. Touch up the doors and garage door

Steel entry and garage doors chalk in the sun, and a chalky south-facing door will not hold paint. Wash it, scuff it, prime it and paint it on a warm afternoon. Replace weatherstripping that has flattened and the bottom seal on the overhead door if daylight shows under it.

Check the paint on the bottom edge of wood doors and the bottom of wood jambs. That end grain is where water wicks up, and a coat of primer and paint there in the fall keeps the bottom of the door from swelling and sticking by spring.

What to leave for spring painting

Some things are better left alone once the nights get cold:

• A full exterior repaint. Late fall paint goes on cold siding and cures slowly, and the wall you finish last is the one that fails. Book it for summer.
• Staining anything if the forecast does not give three dry, warm days.
• Stripping or heavy sanding that would leave bare wood exposed for more than a day.

If you want a second set of eyes on the house before winter, we’ll walk it with you and put the fall touch-ups and the spring paint in writing. Reach us through the contact page.