Crawlspace Encapsulation That Protects Your Air, Structure & Value
Seal moisture, stop mold, and control humidity with a clean, closed crawlspace system — plus Aprilaire whole‑home dehumidification.
Locally Owned
Lifetime Warranty
5-Star Rated in Ohio, Columbus
Crawlspace encapsulation is one the most beneficial upgrades for any home. Crawlspaces are a major source of high humidity and unconditioned air that is often moldy with bugs and other allergens. This same air is brought up to your living areas through stack effect and affects people every day whether they know it or not! Crawlspace encapsulation is the solution. Aside from air quality and overall health, encapsulations provide clean, usable storage space, enhance overall energy efficiency, and look great when going to sell your home.
What is the Stack Effect?
The stack effect is a natural air movement in a building driven by the difference in temperature and pressure between the inside and outside air. Think of it like this, the air in your home moves inside from the bottom (crawlspace and basement), rises through your living areas, and finally exits out the top (attic). Because warm air is less dense and rises, it creates a cycle where warm air escapes through the upper parts of a home, and cold air is drawn in from the lower parts.
Continuous vapor barrier + sealed vents keep soil moisture out.
Protect Structure
Prevents rot and decay in floor framing & insulation.
Efficient & Quiet
Aprilaire whole‑home dehumidifiers maintain RH below 60%.
Healthier Air
Encapsulation reduces spores, dust and other pollutants drawn up.
Benefits of an encapsulated crawlspace
Improved Indoor Air Quality
Unsealed crawl spaces can be a source of mold spores, allergens, dust, and other pollutants that are pulled up into your home's living areas through the stack effect. Encapsulation helps to prevent these contaminants from entering your home, leading to healthier air.
Enhanced Energy Efficiency
A sealed crawl space acts as a thermal boundary, preventing outside air from infiltrating and conditioned air from escaping. This reduces the workload on your HVAC system, which can lead to significant savings on heating and cooling costs—sometimes by as much as 20%.
Moisture and Mold Prevention
By blocking moisture from the soil and outside air, encapsulation creates a dry environment that helps prevent mold and mildew growth. This protects your home's floor framing, insulation, and foundation from rot and decay. Mold will grow on any organic material when humidity is 60% or above. A quality, whole home dehumidifier will control the humidity levels and stop mold. We only use high quality, MADE IN USA, dehumidifiers from Aprilaire.
Pest Control
Encapsulation eliminates the damp, dark conditions that pests like insects and rodents thrive in and seals off their entry points, making it much harder for them to infest your home.
Clean & Usable Storage Space
Holiday decorations that are typically stored in garages or attics. Seasonal clothing and other textiles that can become musty. Electronics and appliances that are sensitive to humidity. Important documents and photos that are vulnerable to mold.
Selling Your Home
Encapsulating a crawl space is a significant selling point that can make a home more attractive and valuable to potential buyers While it may not be as flashy as a kitchen or bathroom remodel, encapsulation addresses fundamental issues that buyers are increasingly concerned about.
Crawlspace Solutions at a Glance
| Type | Best For | Key Benefits |
|---|---|---|
| Full Encapsulation | High humidity, musty odors, storage needs | Sealed liner, vents closed, clean & usable space |
| Dehumidifier (Aprilaire) | RH ≥ 60%, mold prevention & comfort | Controls humidity; protects framing & insulation |
| Exterior Drainage Tune-Up | Gutters, grading, downspouts | Less water at foundation; energy savings (up to ~20%) |
Lifetime Warranty
Transferrable coverage on encapsulation systems.
5-Star Service
Local, licensed, insured — trusted in Columbus, OH.
Aprilaire Dehumidifiers
Whole-home units — Made in USA.
Myths & Reality - Crawlspace
MYTH Ventilation alone keeps a crawlspace dry.
Reality: Outside air often brings more humidity; open vents can worsen moisture.
True Fix: Seal the space and control RH with an Aprilaire dehumidifier.
MYTH Plastic on the ground is enough.
Reality: Unsealed seams, walls and columns leak moisture.
True Fix: Use a continuous liner sealed to walls & piers.
MYTH Mold only grows after floods.
Reality: Mold can grow whenever relative humidity is ≥ 60% on organic materials.
True Fix: Keep RH below 60% with Aprilaire dehumidification.
MYTH Encapsulation is just cosmetic.
Reality: It prevents rot and protects floor framing & insulation.
True Fix: Seal, dehumidify, and monitor humidity.
MYTH Pests won’t enter an enclosed space.
Reality: Gaps still invite insects and rodents.
True Fix: Encapsulation + sealing entry points deters pests.
MYTH It won’t affect energy bills.
Reality: Unconditioned air increases HVAC load.
True Fix: A sealed crawlspace can reduce costs (often up to ~20%).
The Spartan Process
Free Inspection
Assess moisture, odors & structure.
Building Science Analysis
Stack effect, materials, site conditions.
Custom Design
Liner, sealing, dehumidifier & drainage.
Pro Installation
Clean, efficient, and code-compliant work.
Test & Warranty
Humidity set‑points, verification & coverage..
Schedule Your Free Crawlspace Inspection
- ✓ Same/next-day callbacks
- ✓ Lifetime warranty eligible
- ✓ Licensed & insured
Locally Owned
Lifetime Warranty
5-Star Rated in Ohio, Columbus