Crawl Space Encapsulation Cost Calculator
Vapour barrier, insulation and dehumidifier pricing.
Enter your values
Enter the crawl space area in sq ft.
Choose one of: 12 mil, 20 mil, Reinforced 20 mil+.
0 to skip
Enter the wall area in sq ft.
Enter the dehumidifier in $.
Enter the sump pump in $.
Enter the labour in $/sq ft.
Results update instantly as you type — no submit needed. Your values are remembered on this device, and the shareable link reopens the calculator with exactly these numbers.
- Estimated total
- $7,960.00
- Vapour barrier
- $1,320.00
- Wall insulation
- $640.00
- Labour
- $4,200.00
- Equipment
- $1,800.00
- Cost per sq ft
- $6.63
Quick answer
Crawl space encapsulation costs about $5–15 per square foot, so a typical 1,200 sq ft crawl runs $6,000–15,000 fully finished.
cost = area × (liner + insulation + labour) + equipment
At a glance
| What it does | Vapour barrier, insulation and dehumidifier pricing. |
|---|---|
| Category | Home & DIY |
| Inputs needed | Crawl space area, Liner thickness, Wall insulation, Wall area, Dehumidifier, Sump pump, Labour |
| Main output | Estimated total |
| Formula | cost = area × (liner + insulation + labour) + equipment |
| Cost | Free — no sign-up, no download |
How to use the Crawl Space Encapsulation Cost Calculator
- 1Measure the crawl space floor area.
- 2Pick the liner thickness — 20 mil is the common standard.
- 3Add insulation, a dehumidifier and a sump if the space gets wet.
Inputs explained
- Crawl space area(sq ft)
- Enter the crawl space area in sq ft.
- Liner thickness
- Choose one of: 12 mil, 20 mil, Reinforced 20 mil+.
- Wall insulation($/sq ft)
- 0 to skip
- Wall area(sq ft)
- Enter the wall area in sq ft.
- Dehumidifier($)
- Enter the dehumidifier in $.
- Sump pump($)
- Enter the sump pump in $.
- Labour($/sq ft)
- Enter the labour in $/sq ft.
Worked example
Using the values the calculator loads with:
Inputs
- Crawl space area1200 sq ft
- Liner thickness20 mil
- Wall insulation2 $/sq ft
- Wall area320 sq ft
- Dehumidifier1800 $
- Sump pump0 $
- Labour3.5 $/sq ft
Results
- Estimated total$7,960.00
- Vapour barrier$1,320.00
- Wall insulation$640.00
- Labour$4,200.00
- Equipment$1,800.00
- Cost per sq ft$6.63
Frequently asked questions
Is crawl space encapsulation worth it?
Yes in humid climates — it stops mould, cuts musty odours and typically trims 10–15% off heating and cooling bills.
Do I need a dehumidifier after encapsulation?
Almost always: a sealed crawl still needs conditioned or dehumidified air to hold below 60% relative humidity.
What do I need to enter into the Crawl Space Encapsulation Cost Calculator?
Just 7 values: crawl space area, liner thickness, wall insulation, wall area, dehumidifier, sump pump, labour. Every field starts with a realistic example, so you can change one number at a time and watch the result update instantly.
How does the Crawl Space Encapsulation Cost Calculator work out the answer?
Crawl space encapsulation costs about $5–15 per square foot, so a typical 1,200 sq ft crawl runs $6,000–15,000 fully finished. It applies the formula cost = area × (liner + insulation + labour) + equipment and shows the working so you can check each step by hand.
Is the Crawl Space Encapsulation Cost Calculator free, and do I need an account?
It is completely free with no sign-up, no download and no usage limit. Everything is calculated in your browser, so the numbers you type never leave your device.
Results are estimates for general information. For medical, legal, structural or financial decisions, confirm with a qualified professional.