Drywall gets damaged in ordinary ways: a doorknob through the wall, a shelf that pulled its anchors out, a crack above a door that keeps coming back, a soft patch under a window. Most repairs are quick for someone with the right tools and the patience to let compound dry between coats. The hard part is making the repair disappear, especially on a textured wall.
This guide covers the common kinds of drywall damage, what you can note before anyone comes out, the signs that the damage is a symptom of a water or structural problem, and what a repair typically costs.
What you notice
- A hole from an impact, a removed fixture or an old wall anchor.
- A crack at the corner of a door or window, or along a seam, that reopens after being filled.
- Small round bumps or dimples where nails or screws have popped through the paint.
- A stained, bubbling, soft or crumbling area, often near a ceiling, window or bathroom.
- A seam or corner where the tape is lifting or bubbling.
- Texture that does not match where an old repair was made.
Likely causes
Impact damage
Doorknobs, furniture moves and kids. The drywall is punched or dented but the surrounding wall is sound, so the repair is a patch, tape, compound, texture and paint.
Pulled anchors and fasteners
A TV mount, shelf or towel bar fastened only to drywall tears out and leaves a ragged hole. The repair includes a plan for remounting into a stud or with the right anchor.
Seasonal movement and settling
Framing expands and shrinks with humidity, and houses settle. Cracks above doors and windows and at seams come from this. Filling alone often fails; the repair needs tape or a flexible approach to last.
Nail pops
Lumber dries and shrinks after construction, and nails or screws push back through the compound. Harmless, and fixed by driving a new screw nearby and refinishing the spot.
Water damage
A roof leak, a plumbing leak, condensation or a window that leaks saturates the gypsum and the paper. The drywall stays soft and stained, and mold can grow behind it. The leak must be fixed first, and wet material is usually cut out and replaced.
Lead paint or asbestos-era materials
In homes built before 1978, sanding old paint can release lead dust, and older joint compound and texture may contain asbestos. A contractor should know the age of the home before sanding or cutting.
Safe things to check before anyone comes out
- Measure or estimate the size of each damaged area and count them. A repair on several small spots is priced differently from one large hole.
- Note whether the wall is smooth or textured, and what the texture looks like. Matching texture is often the hardest part.
- Look for any stain, bubbling or softness, and whether the area is below a bathroom, near a window, or on an exterior wall. That points to water.
- Note whether a crack has been filled before and reopened; that changes the repair method.
- Note the year the home was built. Pre-1978 homes should be mentioned before any sanding.
- Decide whether you want the repair painted to match, which usually means painting the whole wall, or just primed.
When to stop and call
- A ceiling or wall is bulging, sagging or wet to the touch. Keep people away from it and find the water source; it can fail suddenly.
- Drywall damage is near an outlet, switch or light fixture that shows scorching, or a wall feels warm.
- A crack is wide, runs diagonally from a corner and is growing, or doors and windows have started to stick. That can be movement in the structure.
- Black or green growth is spreading on or behind the drywall, or a musty smell is strong. The moisture source and the extent need to be assessed.
- A hole exposes wiring or pipes where children or pets can reach them.
What the technician does
- Looks at each damaged area, probes for softness and checks for an active leak or movement before quoting.
- Cuts out damaged or wet material to sound drywall, adds backing or a new piece, and screws it to framing or supports.
- Tapes seams and cracks with paper or mesh tape and applies compound in several thin coats, allowing drying time between them.
- Sands smooth with dust control, then matches the existing texture by hand or spray where the wall is textured.
- Primes the repair so it does not flash through the paint, and paints to a corner or the whole wall if matching is included in the scope.
- Cleans up dust, and for water damage, explains what was found behind the wall and whether anything else needs attention.
What it usually costs
Patching a few small holes or nail pops is usually a short visit with a minimum charge, often in the low hundreds of dollars. A larger hole, a recurring crack or a textured wall takes two or three visits for drying time and costs more. Water-damaged drywall that has to be cut out and replaced, and any matching paint, raise it further. The estimate should be explained before any work starts, including whether paint is included.
What moves the estimate
- Size and number of repairs and whether they are on walls or ceilings.
- Smooth versus textured surfaces, and how hard the texture is to match.
- Whether paint is included and whether a whole wall must be painted to blend the repair.
- Water damage and what is found behind the wall.
- Lead-safe or asbestos precautions in older homes.
Keeping it from coming back
- Mount heavy items into studs or with anchors rated for the weight, not into drywall alone.
- Install door stops where knobs hit walls.
- Fix roof, window and plumbing leaks promptly and run bathroom fans so drywall stays dry.
- Keep indoor humidity moderate to reduce seasonal cracking.
- Keep leftover paint and a note of the texture so future repairs blend.
Questions people ask
Can I patch a small hole myself?
Small nail holes and dents are an easy do-it-yourself job with lightweight spackle. Larger holes, textured walls and recurring cracks are where a professional repair pays off, because the repair is invisible and the crack stays closed.
Why does the crack keep coming back?
Because the wall is moving. Filler alone cannot bridge movement. A proper repair tapes the crack, feathers compound over a wider area and sometimes addresses the cause, such as a truss lifting or a door frame flexing.
Will the repair be invisible?
On a smooth wall with the whole wall repainted, usually yes. Texture and spot-painting are harder to hide. Ask how the painter plans to blend it and whether a full wall of paint is in the scope.
The drywall was wet. Can it just dry out?
Sometimes, if it was a brief wetting and it dries quickly. Drywall that stayed wet, is soft, stained or sagging should be replaced, and the space behind it checked for mold and the leak fixed first.
Sources
- Sherwin-Williams: How to repair walls www.sherwin-williams.com
- U.S. EPA: Lead Renovation, Repair and Painting Program www.epa.gov
- U.S. EPA: A brief guide to mold, moisture and your home www.epa.gov