House Areas

Basement Cleanout Dumpster Size Guide: Water Damage & Storage Removal

Basement cleanouts often involve water damage, mold remediation, and decades of stored belongings. Learn how to choose the right dumpster size for wet materials, contaminated items, and heavy debris.

January 16, 20258 min readHome Storage

Basement Cleanout Quick Guide

15 Yard
Dry Storage Only
Normal accumulated items
20 Yard
Water Damage
Wet materials + storage
30 Yard
Major Remediation
Structural + contamination

Types of Basement Debris

Water-Damaged Materials

  • Wet drywall: Heavy, soggy, requires fast removal
  • Soaked carpeting: Extremely heavy when wet
  • Moldy insulation: Contaminated, needs special handling
  • Warped flooring: Laminate, hardwood, tile
  • Damaged furniture: Swollen, contaminated pieces

Typical Storage Items

  • Boxes and containers: Years of accumulated storage
  • Old appliances: Washers, dryers, freezers
  • Exercise equipment: Treadmills, weight sets
  • Seasonal items: Holiday decorations, outdoor gear
  • Workshop materials: Tools, lumber, supplies

Mold & Contamination Warning

Safety first: Basement water damage often leads to mold growth. Wear N95 masks, gloves, and protective clothing. Consider professional mold assessment before major cleanouts. Some contaminated materials may require special disposal methods.

Dumpster Sizing by Cleanup Type

15-Yard: Dry Storage Cleanouts

Perfect For:

  • Normal basement storage clearing
  • Decluttering before moving
  • Seasonal organization projects
  • No water damage or contamination

Typical Contents:

  • 40-60 boxes of stored items
  • Old furniture and appliances
  • Exercise equipment
  • Holiday and seasonal decorations

Estimated cost: $350-$550 | Weight consideration: Normal mixed debris

20-Yard: Water Damage Cleanouts

Perfect For:

  • Flood or leak cleanup
  • Wet drywall and flooring removal
  • Combination water damage + storage
  • Minor mold remediation projects

Typical Contents:

  • Wet drywall and insulation
  • Damaged carpeting and padding
  • Water-damaged stored items
  • Contaminated furniture

Estimated cost: $450-$650 | Weight consideration: Heavy due to water absorption

30-Yard: Major Remediation Projects

Perfect For:

  • Complete basement gut-outs
  • Major mold remediation
  • Structural repair preparation
  • Combined renovation + water damage

Typical Contents:

  • Complete interior demolition
  • All contaminated materials
  • HVAC components and ductwork
  • Structural elements

Estimated cost: $550-$800 | Weight consideration: May hit weight limits quickly

Weight Considerations for Basement Cleanouts

Critical: Water Weight Impact

Water-damaged materials can weigh 3-5 times more than dry materials. This significantly affects dumpster weight limits and may require larger containers or multiple hauls.

Dry Materials (per cubic yard):

  • • Drywall: ~500 lbs
  • • Carpet: ~300 lbs
  • • Mixed debris: ~400 lbs

Wet Materials (per cubic yard):

  • • Wet drywall: ~1,500 lbs
  • • Wet carpet: ~1,200 lbs
  • • Saturated insulation: ~800 lbs
Dumpster SizeWeight LimitDry Basement DebrisWater-Damaged Debris
15 Yard4-6 tonsFull capacity usableMay hit weight limit at 60% full
20 Yard6-8 tonsFull capacity usableMay hit weight limit at 70% full
30 Yard8-10 tonsFull capacity usableBetter weight distribution

Special Disposal Considerations

✅ Dumpster Acceptable

  • Drywall and plaster (dry or wet)
  • Carpeting and padding
  • Wood materials and furniture
  • Non-hazardous stored items
  • Most insulation types
  • Cardboard and paper
  • Small appliances (non-refrigerated)

❌ Special Disposal Required

  • Appliances with refrigerants
  • Electronics and batteries
  • Paint, chemicals, solvents
  • Asbestos-containing materials
  • Propane tanks and fuel
  • Tires and automotive parts
  • Medical waste

Mold Contamination Protocol

For mold-contaminated materials:

  • Double-bag porous materials before disposal
  • Spray non-porous items with antifungal solution
  • Inform dumpster company about mold contamination
  • Some areas require special disposal for heavily contaminated materials
  • Consider professional remediation for extensive mold problems

Safety & Health Precautions

Essential Safety Equipment

Respiratory Protection

  • N95 masks minimum for dust and mold
  • P100 respirators for heavy contamination
  • Ensure proper fit and seal
  • Replace filters regularly

Body Protection

  • Disposable coveralls or old clothes
  • Waterproof gloves (nitrile preferred)
  • Eye protection and safety glasses
  • Non-slip boots with ankle support

Health Risk Indicators

Stop work and consult professionals if you encounter:

  • Extensive black mold growth (over 10 sq ft)
  • Strong chemical odors or fumes
  • Suspected asbestos materials
  • Sewage contamination
  • Electrical hazards in wet areas
  • Structural damage or instability

Basement Cleanout Strategy

Step-by-Step Approach

Phase 1: Assessment

  • • Document damage with photos
  • • Test for mold and contamination
  • • Turn off utilities if needed
  • • Plan debris removal route

Phase 2: Sorting

  • • Salvageable vs. contaminated items
  • • Separate by disposal method
  • • Remove hazardous materials first
  • • Prioritize wet materials

Phase 3: Removal

  • • Heavy items first (weight distribution)
  • • Fill gaps with smaller debris
  • • Keep materials level with rim
  • • Schedule pickup promptly

Timeline Considerations

Quick Turnaround Needed

Water damage situations require fast action:

  • • Schedule dumpster for immediate delivery
  • • Remove wet materials within 24-48 hours
  • • Prevent mold growth and further damage

Standard Cleanouts

Dry storage cleanouts allow more planning:

  • • 3-7 day rental periods typical
  • • Time to sort and donate items
  • • Coordinate with family schedules

Real Project Examples

Case Study: Flood Cleanup - 1,800 sq ft Finished Basement

Situation: Sump pump failure during heavy rain, 6 inches of standing water

Materials Removed:

  • • 400 sq ft wet carpeting and padding
  • • 200 sq ft damaged drywall (2 ft high)
  • • Wet insulation and damaged furniture
  • • 50+ boxes of stored items

Result:

  • • 20-yard dumpster used
  • • Hit weight limit at 75% capacity
  • • Total cost: $625 (including overage)
  • • 3-day emergency rental

Case Study: Estate Cleanout - Unfinished Basement

Situation: 40 years of accumulated storage in 1,200 sq ft basement

Contents Removed:

  • • 100+ boxes and containers
  • • Old appliances and workshop tools
  • • Exercise equipment and furniture
  • • Holiday decorations and memories

Result:

  • • 15-yard dumpster used
  • • 90% capacity utilized
  • • Total cost: $485
  • • 5-day rental period

Cost Optimization Tips

Money-Saving Strategies

  • Donate salvageable items before disposal
  • Separate recyclable metals for scrap value
  • Plan timing to avoid emergency rates
  • Load efficiently to avoid second haul
  • Consider shared dumpster with neighbors
  • Remove valuable items first (tools, electronics)

When to Spend More

  • Water damage requires immediate action
  • Larger dumpster prevents weight overages
  • Professional help for contaminated materials
  • Extended rental for thorough sorting
  • Multiple smaller hauls vs. one large one

Insurance Considerations

For water damage cleanouts: Document everything with photos, keep receipts for dumpster rentals and disposal costs, and check with your insurance company about coverage for debris removal. Many policies cover emergency cleanup costs but require proper documentation.

Conclusion

Basement cleanouts present unique challenges due to potential water damage, weight considerations, and contamination risks. The key is quick assessment of the situation, proper safety precautions, and choosing a dumpster size that accounts for the heavier weight of wet materials.

For dry storage cleanouts, a 15-yard dumpster usually suffices. Water damage situations typically require 20-yard containers, while major remediation projects need 30-yard dumpsters. Always factor in weight limits when dealing with wet materials.

Remember: Safety comes first in basement cleanouts. When in doubt about contamination or structural issues, consult professionals before proceeding with DIY removal.

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Last updated: January 16, 2025 | Written by the Dumpster Calculator Team