/// Service
Crawl Space Repair
Encapsulation, vapor barriers, support posts, joist sistering, and moisture control. Long Island crawl spaces rot framing — we seal, support, and ventilate correctly.
/// What's included
Engineered. Documented. Warrantied.
- 0120-mil reinforced vapor barrier sealed to piers and walls
- 02Adjustable structural support posts for sagging joists
- 03Joist sistering and plate repair where rot is present
- 04Dehumidifier sized to cubic footage and average RH
- 05Closed-cell foam vent sealing — no more humid outside air
/// Typical investment
$3,000 – $12,000 typical
Exact number after on-site assessment.
/// Process
4 Steps. No Theatre.
01
Scope
Full crawl walk with moisture readings, joist condition notes, and structural measurement.
02
Plan
Written scope — what gets encapsulated, what gets structural repair, what gets air control.
03
Install
Debris-out, barrier-in, seal all penetrations, add support posts, hang dehu.
04
Monitor
Moisture readings at 30 days to verify the space stays under 55% RH year-round.
/// Questions
FAQ.
01Do I need full encapsulation?+
Depends on moisture source. Some crawls need just a vapor barrier and a dehu; others need full sealed encapsulation. We measure before we recommend.
02Will my floors stop sagging?+
If the sag is from soft joists or failed posts, yes — sistering and new adjustable support posts bring floors back to level over 30 days of incremental adjustment.
/// Related Services
The Other Six Fixes.
/// Book
Free Assessment.
Engineered Report.
A LI Foundation Co. tech will be on-site within a week. Assessment is free, report is included, no pitch at the end.
(516) 529-6996/// Request