The short answer
How Water Gets Behind Siding
Vinyl siding is installed in overlapping panels that are meant to shed water down the wall. However, the overlap is not a sealed joint. Strong wind can push rain upward and sideways, forcing water into the small gaps between panels. Once water is behind the siding, it can travel down the wall, following gravity and capillary action.
Another common path is through damage. A crack, a gap at a corner, or a loose panel gives water a direct route behind the siding. Nail holes that are not sealed can also let water in. Even a small opening can let in a surprising amount of water during a downpour.
What Can Happen When Water Gets In
When water sits behind vinyl siding, the first thing it touches is the house wrap and the wood sheathing. If the water stays there, the wood can absorb it, leading to swelling, warping, and rot. Over time, this can weaken the structure of your wall.
The moisture also creates ideal conditions for mold and mildew. You might notice a musty smell inside your home, or see dark stains on interior walls. Mold can spread from the sheathing to the insulation and drywall, causing health concerns and requiring professional cleanup.
- Look for peeling paint or bubbling on interior walls
- Check for soft or spongy spots on the siding
- Look for water stains on the ceiling or walls inside
- Inspect the attic for signs of moisture
- Feel for dampness on interior walls after heavy rain
- Watch for mold growth on the siding itself
How to Check for Water Entry
You can do a simple check after a rainstorm. Walk around your home and look for water dripping from behind the siding, especially at the bottom edge. Feel the siding for any wet spots or visible gaps. Also, check the flashing above windows and doors, as these are common entry points.
Inside, look for water stains on the ceiling or walls, especially near the exterior walls. Check the attic for wet insulation or damp wood. If you find any signs of moisture, it is important to act quickly. The longer water sits, the more damage it can do.
Preventing Water Intrusion
Prevention starts with keeping your siding in good condition. Inspect it regularly for cracks, gaps, or loose panels. Seal any openings with exterior caulk. Make sure the siding is properly installed, with the correct overlap and fastening. Also, ensure that gutters and downspouts are clear and direct water away from the foundation.
If you are having new siding installed, ask the installer about using a water-resistant barrier underneath, like house wrap. This adds an extra layer of protection. In areas with heavy rain, consider adding flashing at the bottom of the wall to direct water outward.
When to Call the Pros
If you suspect water has been getting behind your siding, or if you find signs of moisture damage, it is wise to call local water damage pros. They can inspect the wall, find the source of the leak, and assess the extent of the damage. They have the tools to detect moisture behind the siding without tearing it all off.
If the water has already caused rot or mold, professional help is needed. The pros can remove damaged materials, dry out the wall, and treat mold. They can also help with water damage inspection to determine the full scope. Acting quickly can prevent a small problem from becoming a major repair.
If you live in Layton, keep your siding in good repair and check it after storms. For any water damage concerns, the pros can provide a thorough assessment.
- Water damage inspection
- Emergency water extraction
- Drywall water damage repair
- Crawlspace water damage cleanup
Need help right now?
Call (801) 383-0232 any time, day or night, and describe what happened.
Call Now (801) 383-0232Frequently asked questions
How can I tell if water is behind my vinyl siding?
Look for water stains on interior walls, musty odors, or soft spots on the siding. After a rain, check for dripping water at the bottom edge of the siding. Also, inspect the attic for dampness or stains.
Can I fix the problem myself?
Small gaps can be sealed with exterior caulk, and loose panels can be re-fastened. However, if water has already caused rot or mold, professional help is needed to properly dry and repair the wall.
Will my insurance cover water damage from siding?
Policies vary, and your insurer decides what is covered. Generally, sudden and accidental water damage may be covered, but gradual damage from lack of maintenance might not be. Check your policy for details.