/Hurricane-Consequences

Addressing Drywall Sagging Due to Water Damage

Expert tips to fix sagging drywall. Learn causes and simple DIY fixes to restore your walls and prevent future issues.

Reviewed by Content Team

Head of Content, D. Gorenko

Updated June, 5

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How to Fix Sagging drywall

 

Immediate Steps to Take

 
  • Examine the affected area to determine the severity of the sag. Check if it is limited to a small portion or if multiple areas are affected.
  • If the drywall is sagging due to loose or missing fasteners, locate the studs behind the drywall.
  • Cover furniture and floors with drop cloths to protect them from dust and debris.
  • If the sag appears due to water damage, stop the source of water immediately, and ensure the area is completely dry.

 

Tools and Materials Needed

 
  • Stud finder – to locate the studs behind the drywall.
  • Screwdriver or drill with appropriate bits – preferably with an adjustable torque setting.
  • Drywall screws – longer screws that can anchor securely into the studs.
  • Drywall saw or utility knife – to trim any damaged sections if needed.
  • Drywall adhesive or construction adhesive – for additional reinforcement.
  • Joint compound and sanding tools – if you need to patch up or smooth out the surface after repair.
  • Protective gear such as safety goggles, gloves, and a dust mask – to ensure you are protected during the process.

 

Step-by-Step Repair Process

 
  • Identify the loose or sagging area and use a stud finder to locate the framing behind the drywall.
  • If fasteners are missing or loose, remove any damaged screws or nails, and then reposition or add new drywall screws so that they firmly attach the drywall to the studs.
  • For areas with minor sagging and no water damage, inject a light bead of drywall adhesive along the stud line and press the drywall against it before securing it with screws.
  • If the drywall section is severely damaged or warped, cut out the damaged portion using a drywall saw and replace it with a new piece. Secure the new piece to the studs and finish with joint compound and sanding to achieve a smooth finish.
  • Allow joint compounds to dry fully and then sand the area for a seamless integration with the surrounding wall.

 

Can a Homeowner Fix It Themselves?

 
  • For small areas where the problem is localized and simple, a handy homeowner with basic DIY skills can successfully repair sagging drywall.
  • However, if the sagging extends over a large area or is related to water damage and structural issues, it might be necessary to call a professional.

 

Who to Call if Professional Help is Needed

 
  • A general contractor or a qualified handyman experienced in drywall repair should be your first call. These professionals understand the underlying issues and can ensure that repairs are long lasting.
  • If water damage is involved, you might also need to consult a water damage restoration expert to address both the water issue and its effects on the drywall.
  • For a full-service residential and commercial remedy, companies like St. Louis and Nashville based providers have ample experience in handling such repairs professionally without compromising safety and quality.

 

Safety Warnings and Insurance Tips

 
  • Always wear eye protection, gloves, and a dust mask when working with drywall to avoid injury and inhalation of dust particles.
  • Disconnect any electrical devices or ensure power is off in areas near the repair site to prevent electrical hazards when using power tools.
  • If you suspect mold or other hazardous materials due to water damage, consult a professional to safely address the issue before proceeding with repairs.
  • Keep a fire extinguisher nearby, especially when cutting or drilling close to electrical installations.
  • Review your homeowner’s insurance policy if the damage was caused by an accident or severe weather, as repairs may be covered under certain circumstances. Retain documentation of the damage and any repairs for future reference.

What Could be Causing Sagging drywall

 

Moisture Intrusion

 

Moisture is a leading cause of sagging drywall. When water enters the wall from leaks, high humidity, or condensation, it soaks the gypsum core and the paper facing. Over time, the materials become soft and heavy, which can lead to sagging, especially in areas near plumbing fixtures or exterior walls.

 

Structural Insufficiencies

 

Drywall is supported by a framework of studs. If these framing members are weak, broken, or improperly spaced, they fail to provide the necessary support. The drywall may sag due to the extra weight that it cannot handle when the underlying structure is not steady. This problem is common in older homes where the framing may have deteriorated or been damaged.

 

Improper Installation

 

Improper installation can create long-term issues. If the drywall is not secured properly, or if the screws are not placed in the recommended pattern, the board may sag over time. Use of low-quality materials or insufficient fasteners that do not penetrate well into the studs can cause the drywall to loosen and droop.

 

Excessive Loading

 

The drywall can also sag if extra load is added to it. This might happen in places where heavy decorative items, shelves, or fixtures are attached. The additional weight can pull the drywall down if it was not designed for such loads, especially if the support from the studs is already compromised.

 

Temperature and Humidity Fluctuations

 

Large changes in temperature and humidity can affect the materials in drywall. In climates where there are rapid fluctuations, the moisture in the air can seep into walls and weaken the structure. This scenario is common in regions with extreme weather changes and can also affect moisture-prone areas of homes in St. Louis and Nashville.

 

Building Settling and Shifting

 

Over time, a building might settle or shift. This movement can put stress on the framing and thus on the drywall. When the frame moves, even slightly, it can cause the drywall to pull away from its supports, leading to a gradual sag. This type of damage is often seen in older structures where the foundation has begun to shift.

 

Poorly Anchored Fasteners

 

If nails or screws are not anchored securely, they may eventually come loose. This lack of secure anchoring removes the physical connection between the drywall and its supporting structure. Without strong, tight fasteners, the weight of the drywall alone can gradually cause a droop or sag.

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