Drywall Ceiling Calculator
Calculate drywall sheets for ceilings. Enter room dimensions to determine the number of 4×8 or 4×12 ceiling panels needed, including waste for cuts and edges.
Popcorn Ceiling Removal Calculator
Estimate time and materials for popcorn ceiling removal. Enter ceiling area to calculate work hours at ~100 sq ft/hr and disposal bag quantities for the project.
sq ft
sq ft/hr
$/hr
$
Total Work Hours⧉
49.9
~49.9 hrs with 1-person crew
Effective Scrape Rate⧉
100 sq ft/hr
Unpainted scrapes fastest
Disposal Bags⧉
24
Heavy-duty contractor bags
Skim Coat Compound⧉
38 gal
2 coats for smooth finish
Total DIY Cost⧉
$3,014.00
$2.51/sq ft
Pro Estimate⧉
$1,800.00 - $3,600.00
DIY may not save much here
Time Breakdown
Prep (plastic, tape, wet)3.4 hrs (0.07%)
Scraping12.0 hrs (0.24%)
Finishing30.0 hrs (0.60%)
Cleanup4.5 hrs (0.09%)
Supplies Shopping List
| Item | Qty | Est. Cost |
|---|---|---|
| Plastic sheeting (rolls) | 5 | $125.00 |
| Painter tape (rolls) | 2 | $16.00 |
| Contractor trash bags | 24 | $72.00 |
| Pump sprayer / bottles | 6 | $30.00 |
| Joint compound (gal) | 38 | $684.00 |
| Sandpaper sheets (150 grit) | 8 | $16.00 |
| Materials Subtotal | $943.00 |
DIY vs Professional Cost
| Approach | Cost | Per Sq Ft | Timeline |
|---|---|---|---|
| DIY | $3,014.00 | $2.51 | 6.2 days |
| Professional (low) | $1,800.00 | $1.50 | 1-2 days |
| Professional (high) | $3,600.00 | $3.00 | 1-2 days |
Planning notes, formulas, and examples
About the Popcorn Ceiling Removal Calculator
Popcorn ceilings (also called acoustic or cottage cheese ceilings) were popular from the 1950s through 1980s but are now considered outdated. Removing popcorn texture is one of the most common home renovation projects. The process involves wetting the texture, scraping it off, and then finishing the ceiling smooth with joint compound.
This popcorn ceiling removal calculator estimates the time, materials, and effort required for your project. The standard removal rate is about 75–125 square feet per hour for a competent DIYer, depending on how well the texture was applied and whether it's been painted over (painted texture is much harder to remove).
The calculator also estimates the number of disposal bags, the amount of plastic sheeting for floor protection, and skim coat material needed after removal. It factors in your skill level and the texture condition for realistic time estimates.
When This Page Helps
Popcorn ceiling removal is labor-intensive and messy. Underestimating the time commitment leads to abandoned projects and open ceilings. This calculator gives realistic work hours and material quantities so you can plan the project properly.
How to Use the Inputs
- Enter the total ceiling area in square feet.
- Select whether the texture has been painted over (increases difficulty).
- Set your estimated removal rate (100 sq ft/hr typical for unpainted).
- Review the estimated work hours and materials needed.
- Note: test for asbestos first if the home was built before 1980.
Formula used
Work Hours = Ceiling Area ÷ Removal Rate (sq ft/hr)
Disposal Bags = Area ÷ 50 (50 sq ft per bag approx.)
Plastic Sheeting = Ceiling Area × 1.5 (for floor + wall coverage)Example Calculation
Result: 12 hours of work
1,200 sq ft ÷ 100 sq ft/hr = 12 hours of scraping. Plus about 24 disposal bags (1,200 ÷ 50). You'll need approximately 1,800 sq ft of plastic sheeting for floor and wall protection, plus skim coat compound for finishing.
Tips & Best Practices
- CRITICAL: Test for asbestos before scraping if the ceiling was textured before 1980.
- Soak the texture with warm water using a pump sprayer — wait 15 minutes before scraping.
- Cover the entire floor and walls with 6-mil plastic sheeting before starting.
- Use a wide (12–14 inch) drywall knife for scraping — wider is faster.
- Work in 4×4 foot sections: spray, wait, scrape, move to the next section.
- If the texture is painted, you may need to skim coat over it instead of scraping (much harder to remove).
- Rent a commercial paint sprayer for the soaking step to speed up large ceilings.
The Popcorn Ceiling Removal Process
Step 1: Test for asbestos if built before 1980. Step 2: Remove furniture and cover everything with plastic. Step 3: Spray the ceiling with warm water in 4×4 ft sections. Step 4: Wait 15 minutes for the texture to absorb water. Step 5: Scrape with a wide drywall knife. Step 6: Repeat until all texture is removed. Step 7: Skim coat, sand, prime, and paint.
Dealing with Painted Popcorn Ceilings
Painted texture resists water absorption, making it 2–3 times harder to remove. Score the surface lightly with a drywall knife before soaking to help water penetrate. Commercial ceiling texture removers can dissolve the bond. In some cases, covering with new drywall is more practical.
Tools You'll Need
Pump sprayer, 12–14 inch drywall knife, 6-mil plastic sheeting, painter's tape, garbage bags, joint compound (for skim coating after), sanding pole, primer. A ceiling texture scraper with a bag attachment catches debris and reduces mess.
Health and Safety
Always wear a respirator rated for dust. Wear safety goggles to protect eyes from falling debris. Work in well-ventilated areas. If asbestos is present, do not attempt DIY removal — this is a legal requirement in most jurisdictions.
Sources & Methodology
Last updated:
Frequently Asked Questions
For unpainted texture, expect 75–125 sq ft per hour. A typical 200 sq ft bedroom ceiling takes 2–3 hours to scrape. Painted popcorn ceiling takes 2–3 times longer because the paint seals the texture, preventing water absorption.
Yes, if the texture was applied before 1980. Asbestos was commonly added to acoustic texture products. Testing costs $25–50 through a certified lab. If asbestos is found, hire a licensed abatement professional — do NOT DIY.
Yes, installing new 1/4" or 3/8" drywall over existing popcorn ceiling is an option. It avoids the mess of scraping but adds weight to the ceiling joists and slightly lowers the ceiling height. It's often faster for whole-house projects.
Painted popcorn texture is much harder to remove because the paint prevents water from softening the texture. Options include: heavy soaking with longer wait times, using a ceiling texture remover product, or skimming over the texture.
Extremely messy. Wet gloppy texture falls everywhere. Complete room protection is essential: plastic on all floors, walls, and fixtures. Remove all furniture from the room. It's the messiest common home renovation project.
Usually yes. Scraping leaves a rough, uneven surface with gouges and ridges. One or two skim coats of joint compound, followed by sanding, creates a smooth ceiling ready for primer and paint.
Professional popcorn ceiling removal typically costs $1–$3 per sq ft, or $1,000–$3,000 for a typical home. Asbestos-containing texture removal costs $3–$7 per sq ft due to abatement requirements.
Dry sanding popcorn ceiling is not recommended — it creates massive dust, potential asbestos exposure, and is much slower. The wet-scrape method (soak with water, scrape with knife) is standard for good reason.
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