Crawl Space Insulation in Houston, TX

First Defense Insulation provides crawl space insulation in Houston, TX for homes with missing or damaged insulation, air leakage, high humidity, standing water and other crawl-space moisture problems.

Depending on the condition of the crawl space, the work may include closed-cell spray foam, rigid foam insulation, insulation removal, crawl space encapsulation, drainage, air sealing or dehumidification.

First Defense Insulation offers free crawl-space evaluations and estimates, has an A+ BBB rating, and brings 35 years of combined insulation experience.

Call (713) 808-9853 to schedule a free crawl-space evaluation.

What Does Your Crawl Space Need?

New insulation should not be installed over an unresolved water, mold or moisture problem.

The condition of the crawl space determines which service applies.

Crawl-Space Condition

Service

Crawl-Space Condition → Service

Missing, damaged or ineffective insulation

→

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Crawl space insulation

Sagging or contaminated fiberglass

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↓

Insulation removal and replacement

Standing water or water intrusion

→

↓

Crawl space waterproofing and drainage

Mold or contaminated materials

→

↓

Crawl space remediation

Humid dirt crawl space

→

↓

Crawl space encapsulation and humidity control

Air leakage around vents, rim joists or penetrations

→

↓

Air sealing

First Defense evaluates the existing insulation, moisture conditions and crawl-space configuration before recommending the work.

How Much Does Crawl Space Insulation Cost in Houston?

Crawl space insulation in Houston typically costs about $2,600 to $5,200 for a residential project. Larger projects involving spray foam, insulation removal or moisture correction can cost more.

Related crawl-space services commonly fall within these working ranges:

Service

Typical Cost

Crawl space insulation

$2,600–$5,200

Crawl space encapsulation

$5,000–$15,000

Crawl space mold remediation

$1,000–$3,500

Crawl space waterproofing and drainage

$1,500–$7,000

Project pricing is affected by crawl-space size, accessibility, insulation removal, water or mold conditions, drainage requirements, insulation method, encapsulation materials and dehumidification needs.

First Defense provides a free crawl-space evaluation and estimate before the project is scheduled.

Call (713) 808-9853 for pricing on your home.

What Is the Best Insulation for a Crawl Space?

The correct insulation depends on where the home’s thermal boundary is located and whether the crawl space remains vented or is sealed and encapsulated.

Closed-Cell Spray Foam

First Defense uses closed-cell spray foam for crawl-space insulation where spray foam is the appropriate method.

Closed-cell spray foam provides insulation while sealing gaps around framing and penetrations. It does not rely on loose-fitting batts to remain in contact with the floor assembly.

SilverGlo Rigid Foam

First Defense also uses SilverGlo™ rigid foam insulation in crawl spaces.

SilverGlo combines rigid foam with graphite particles and a reflective surface. It can be installed on crawl-space walls when the thermal boundary is moved from the floor assembly to the crawl-space perimeter.

Existing Fiberglass Insulation

Fiberglass batts can sag, become contaminated or separate from the subfloor when crawl-space conditions deteriorate.

First Defense removes failed or contaminated fiberglass when removal is required before new insulation or encapsulation work.

Crawl Space Repair for Insulation and Moisture Problems

Crawl space repair can involve several different services.

First Defense provides crawl-space work for:

First Defense’s crawl space repair services cover insulation, moisture management, drainage, encapsulation, air sealing and dehumidification. Structural foundation, support-post, beam and joist repairs are referred to a structural contractor unless First Defense confirms otherwise.

This distinction matters because insulation or moisture repair is different from repairing damaged structural framing.

Crawl Space Remediation

Mold and contaminated insulation should be addressed before the crawl space is sealed.

First Defense uses Mold-X and Mold-X Botanical for crawl-space mold treatment and removes contaminated insulation when necessary.

Remediation prepares the crawl space for insulation, sealing or encapsulation without trapping contaminated material behind the new system.

Crawl Space Waterproofing and Drainage

Standing water should be controlled before the crawl space is encapsulated.

First Defense uses SmartPipe™ drainage to collect water entering around the crawl-space perimeter and direct it toward a SmartSump™ system.

CleanSpace™ drainage matting can be installed over the crawl-space floor to create drainage space beneath the encapsulation liner.

Water management, insulation and encapsulation solve different parts of the crawl-space problem and may be used together when required.

What Does Crawl Space Encapsulation Include?

Crawl space encapsulation isolates the crawl space from ground moisture and humid outside air.

A First Defense encapsulation project may include the following components depending on the crawl-space condition.

20-Mil CleanSpace Vapor Barrier

First Defense installs CleanSpace™ across crawl-space floors and walls.

CleanSpace is a 20-mil, seven-layer polyethylene liner reinforced with polyester cord. The liner creates a continuous barrier between the crawl space and moisture from the ground.

The seams and perimeter are sealed as part of the encapsulation system.

CleanSpace installations provided by First Defense include the applicable 25-year manufacturer performance warranty.

Vent and Rim-Joist Sealing

A sealed crawl space requires uncontrolled outside air to be reduced.

First Defense uses closed-cell spray foam or rigid foam around crawl-space walls, rim joists and other areas where insulation and air sealing are required.

Crawl Space Dehumidification

First Defense uses the SaniDry™ Sedona when mechanical humidity control is needed after the crawl space is sealed.

The SaniDry Sedona removes more than 100 pints of water per day, moves more than 300 cubic feet of dry air per minute, and is designed to maintain relative humidity below 55%.

The system drains automatically, so there is no water bucket to empty.

How First Defense Insulates and Encapsulates a Crawl Space

A complete crawl-space project addresses water and contamination before new insulation and encapsulation are installed.

Evaluate the Crawl Space

First Defense inspects the existing insulation, moisture conditions, standing water, air leakage and crawl-space access.

Address Water

Drainage and sump equipment are installed when standing water or water intrusion must be controlled.

Remove Contaminated Materials

Damaged insulation is removed and mold treatment is completed when required.

Insulate and Air Seal

First Defense installs the insulation method appropriate for the crawl-space configuration and seals air leakage where required.

Encapsulate the Crawl Space

CleanSpace liner is installed across the floor and walls when full encapsulation is part of the project.

Control Humidity

A SaniDry Sedona dehumidifier can be installed when mechanical humidity control is required.

First Defense states that most residential insulation projects are completed in one day, typically within 4 to 6 hours.

Full crawl-space encapsulation projects involving drainage, remediation, insulation, liner installation and dehumidification typically require about 1 to 3 working days.

Why Choose First Defense Insulation?

First Defense provides both insulation and moisture-control services, allowing the crawl space to be evaluated as a complete system rather than installing new insulation over an unresolved moisture problem.

First Defense provides:

Business hours are Monday through Friday, 8:00 AM to 5:00 PM.

Crawl Space Insulation Service Area

First Defense Insulation serves Houston and surrounding communities including:

If you need crawl space insulation, encapsulation, remediation, waterproofing or moisture-control work in the Houston area, call (713) 808-9853.

Get a Free Crawl Space Evaluation

First Defense Insulation can evaluate your crawl space and determine whether the work requires insulation, insulation removal, drainage, remediation, encapsulation, air sealing or dehumidification.

Call (713) 808-9853 to schedule a free evaluation.