J. Bos Inc. Roofing Services | Protecting Homes Across Iowa
Winter exposes every weak point on a home’s exterior. When snow and ice accumulate and freeze repeatedly, small cracks widen, water infiltrates, and materials lose durability. Preparing your home’s siding, trim, and foundation before harsh weather hits can prevent water damage that often appears months later.
Here is what homeowners in Iowa should check before winter.
Why Exterior Prep Matters
Water behaves differently in winter. It expands when it freezes, pushing deeper into gaps around siding, roof edges, and the foundation. As temperatures warm, that trapped moisture melts and creates hidden rot inside walls or beneath shingles. A complete exterior check eliminates easy entry points.
Key Areas to Inspect
Siding and Trim Gaps
• Inspect where siding meets windows and doors
• Look for boards pulling away from the house
• Identify holes caused by pests or impact damage
Gaps here are direct channels for moisture intrusion.
Fascia Boards
Fascia supports the gutters. When boards rot or separate, gutter systems fail under the weight of snow and ice. This leads to roof edge saturation and ice dam formation.
Check for:
• Soft spots or peeling paint
• Areas where gutters sag or pull away
• Exposed wood that has lost its protective coating
Soffits and Venting
Soffits provide ventilation to the attic. Obstructions can trap heat and increase condensation under the roof deck.
Review for:
• Blocked or painted-over vents
• Cracks allowing pests into attic cavities
• Loose panels that could detach in wind
Foundation Perimeter
Snow piled against the foundation greatly increases moisture exposure.
Look for:
• Visible cracks or crumbling mortar
• Persistent wet soil near downspouts
• Negative grading that directs water toward the home
Redirecting water flow now reduces spring thaw issues.
Check Drainage Systems
Downspouts must point water away from the structure. If drainage angles are wrong, melted snow pools near the foundation and can find its way inside once it warms.
Consider adding:
• Downspout extensions to extend reach
• Splash blocks to redirect water away
• Drainage paths that prevent ice buildup
When to Repair or Replace
If multiple problem signs appear or the exterior hasn’t been inspected for several seasons, repairs should be completed before winter storms start. Small fixes now prevent structural deterioration later.
Professional Assistance
Our inspections identify external threats that can directly impact your roof system. Preventing water intrusion is the best way to avoid costly repairs in spring.
Continue Reading:
Homeowner’s Guide to Winterizing Your Home
Book an exterior inspection:
https://jbosroofingservice.com/contact-us/
