We answer two or three water-damage calls every week from Longview-area homeowners — roof leaks, plumbing leaks, AC condensate overflow, washing machine hoses. The single biggest factor that determines whether you face a $500 repair or a $30,000 mold remediation is how you respond in the first 24 hours. This guide walks through the right moves and the most common mistakes.
Hour 1-2: Stop the Source
Find and stop the water. Shut off the supply valve, the main if needed, or get a tarp on the roof if it's a leak from above. You cannot dry out drywall while it is still getting wet. Don't move on to drying or removal until the leak is confirmed stopped.
Hour 2-12: Get Air Moving
Open windows if the outside air is drier than inside (in Longview summer this is almost never true; in winter it usually is). Run ceiling fans. Place box fans pointed at the wet area. A residential dehumidifier in the room helps; a commercial low-grain refrigerant unit helps a lot more. Goal: get the ambient relative humidity below 50% in the affected space.
Day 1-3: Monitor With a Meter
Buy or borrow a moisture meter ($30 at Lowe's). Drywall reads about 6-8% when dry and 16%+ when wet. Mark wet readings on the wall with a pencil so you can track progress. If the meter readings drop by 1-2% per day, you are drying. If they hold or climb, you are not — and you need to cut the drywall out.
When You Must Cut It Out
If drywall is still reading above 16% after 72 hours of aggressive drying. If you see any visible mold (any color — black, green, white, fuzzy). If you smell that distinctive musty/earthy odor anywhere near the affected area. If the drywall is soft to the touch or shows visible sagging. If insulation behind the wall is wet — insulation holds moisture that will re-wet the drywall.
The 'Just Paint Over It' Trap
Painting over a water stain without addressing the underlying moisture and confirming the cavity is dry is the most expensive mistake we see. Mold colonizes the back side of drywall in 24 to 48 hours under East Texas humidity. Paint seals in the spores. Six months later, when the smell becomes obvious, the whole wall has to come out — and now there's a $4,000 remediation invoice on top of the $400 repaint.
When to Call a Pro
Any leak affecting more than about 6 square feet of drywall. Any leak where the source is unclear (slow leaks behind walls or above ceilings often have surprise causes). Any leak where you suspect mold may already be present. Any leak where insurance will be involved — adjusters want professional documentation, not homeowner photos. Call (903) 555-0200 for 24-hour water-damage response in the Longview area.