Weatherproofing in Columbus, Ohio

Transit & Flow Group provides weatherproofing services across Columbus and Central Ohio, sealing the building envelope at the places water and outside air actually get in: exterior caulk joints, vent flashing, pipe and cable penetrations, siding seams, and the transitions where one exterior material meets another. This is broader envelope work than a single sealed joint, built around keeping the whole exterior shell dry and intact rather than patching one visible gap. Describe what you are seeing, with photos, in the Estimate Builder for a preliminary online estimate.

Is this the right service for you?

Weatherproofing is the right call when water intrusion or gaps in the exterior shell could affect more than one spot, or when you are not sure how far the problem extends. Common situations:

• Vent and pipe penetrations. Dryer vents, hose bibs, electrical service entries, and HVAC line sets all pass through the exterior wall or roofline, and the seal around each one degrades over time.
• Siding and trim transitions. Gaps where siding meets a window or door frame, where two siding materials meet, or where trim boards meet masonry or a foundation.
• Flashing and seam gaps. Small gaps at roof-to-wall transitions, chimney flashing edges, or deck ledger flashing that are letting water track behind the exterior surface.
• General water intrusion you cannot pinpoint. Staining, efflorescence, or a damp spot inside that seems to trace to an exterior gap somewhere nearby.

Weatherproofing has two close relatives worth naming so you land on the right page. Draft Sealing is a narrower, energy-focused subset of this work: it targets air leaks specifically, at doors, windows, outlets, and attic hatches, aimed at lowering utility bills rather than stopping water. If your concern is drafts and a higher heating bill rather than water finding its way in, that page is the better fit, and we often recommend both together since a sealed envelope handles air and water at once. If your need is one specific joint, a tub surround, a countertop seam, or a single window, our general Caulking page covers that single-fixture work at fixed per-fixture pricing, and weatherproofing is the right page instead when the scope spans multiple penetrations, seams, or an unclear source across the exterior.

How pricing works

Weatherproofing is fixed pricing, built from linear footage of sealed joint and the number of penetrations addressed, not a flat whole-house number:

• Per-linear-foot pricing applies to caulked seams, trim transitions, and flashing edges, priced by the running foot of joint being sealed.
• Per-penetration pricing applies to discrete points like vent boots, pipe entries, and electrical service masts, each priced as its own line item.
• What changes the price: how much old, failed sealant has to be removed first, how many separate penetrations and seams are in scope, access (a second-story vent versus a ground-level hose bib), and whether any substrate underneath is soft or damaged and needs more than a surface reseal.
• Scope tends to grow once we are up on a ladder. If we find additional failed seals nearby while working, we photograph and price them separately rather than including them silently.

As general market context, not a Transit & Flow Group quote, HomeAdvisor’s 2025 data puts perimeter caulking and sealing around $2.50 to $4 per linear foot, with a typical 100-foot exterior run averaging near $325, and individual window or door seals commonly running $30 to $100 each. Starting at $249, itemized at booking based on scope.. Enter your project details and photos in the Estimate Builder for a preliminary online estimate. Final scope and price subject to verification on site.

What’s included

• Assessment of exterior penetrations, seams, and flashing transitions in the scope you describe
• Removal of failed or cracked sealant before new material is applied
• Exterior-grade sealants selected for the substrate and location, paintable where needed
• Sealing of vent boots, pipe and cable entries, and similar penetrations
• Photos of sealed points, including any that are hard to see once complete
• All workmanship is backed by a 1-year labor warranty on labor, parts, and equipment covered per manufacturer terms.

What’s not included

• Single-fixture caulking such as a tub surround, countertop, or one window; see our Caulking page for that scope
• Air-leak sealing at doors, windows, outlets, or attic hatches aimed at energy efficiency; see Draft Sealing
• Roof covering repair or replacement, beyond flashing edge seals
• Siding replacement or structural repair behind a failed seal, quoted as a separate scope if hidden damage is found
• Moisture remediation inside the home; this service seals the exterior shell, it does not address indoor air quality

Central Ohio context

Central Ohio’s climate is genuinely hard on an exterior shell. Freeze-thaw winters push water into every small gap, where it freezes, expands, and widens the opening a little more each cycle, and humid summers keep moisture pressing against the exterior from the outside in between. A house that seals up tight in October can develop new gaps by March just from that repeated cycling, which is why fall is the season we recommend most for a weatherproofing pass, ahead of the hardest freezes.

Age matters as much as climate. Homes in Clintonville, German Village, and Bexley were often built before modern sealants and house wraps existed, and their exterior seams, especially around additions, retrofit vents, and older trim work, tend to have more gaps than a newer build. Dublin and New Albany homes, built more recently with modern flashing and sealing details, generally need less of this work and on a longer cycle, though no exterior seal lasts forever through Ohio winters.

Our process

1. Describe what you are seeing online. Location, symptoms, and photos of any gaps, staining, or drafts go into the Estimate Builder for a preliminary online estimate.
2. On-site assessment. We walk the exterior, identify every penetration and seam in scope, and confirm which need attention.
3. Line-item scope. Each seam or penetration priced separately, so you can see exactly what is being sealed and why.
4. Removal and sealing. Failed sealant removed, surfaces prepped, and new sealant applied and tooled at each point.
5. Final walkthrough. We review the sealed points with you and note anything to watch for next season.

Services completed by appropriately qualified professionals where required.

Related services

Draft Sealing | Caulking | Minor Exterior Repair

Sealing the exterior shell starts with knowing where the gaps actually are. Get a preliminary online estimate in the Estimate Builder, book service online, or call Transit & Flow at (614) 382-0000.