Sample Deliverable
This Is Exactly What You Get
A real game plan Jason wrote for a KC homeowner (name and address redacted for privacy). Every plan is built for the specific crawlspace it covers — findings, a written take from Jason, a complete materials list with real prices and buy links, and step-by-step install instructions.
KC CRAWL SPACE SPECIALISTS
★ Kansas City's Only Crawlspace SpecialistCrawlspace Assessment & Game Plan
Prepared by Jason Dillon · 816-962-2111 · CrawlspaceKC.com
01 What we found
NW corner moisture84% RH ⚠
NE corner moisture79% RH ⚠
Center moisture76% RH
SE corner moisture71% RH
Existing vapor barrierNone present
Mold on joistsMinor — south side
Standing waterNone
Foundation vents8 open — must seal
Jason's take:Your crawlspace has no vapor barrier and 8 open vents — every summer KC's 80%+ outdoor humidity pours right in. The minor mold on south joists is surface-level and treatable with borate spray before install. Fix the small pipe drip first, then this is a very manageable weekend DIY project. The dehumidifier is strongly recommended given your readings.
02 Prep work first
① Fix plumbing drip (south pipe) — before anything elseSmall repair ~$150–$300 by plumber. Allow 48 hrs to dry.
② Treat mold on south joists with Boracare sprayFull coverage spray, 2 hr dry time, photograph before & after.
③ Clear all debris and remove damaged insulationBag everything, remove from crawlspace before installing barrier.
03 Complete materials list — 1,200 sq ft
| # | Product | Qty | Est. cost | Link |
|---|---|---|---|---|
| 1 | 20-mil white vapor barrier (10×100 ft rolls) | 2 rolls | $378 | Buy → |
| 2 | Crawlspace seam tape — 3-inch waterproof | 4 rolls | $56 | Buy → |
| 3 | Aluminum termination bar — 8 ft sections | 15 pcs | $67 | Buy → |
| 4 | Tapcon masonry screws 3/16" × 1-3/4" (100ct) | 1 box | $18 | Buy → |
| 5 | Foam vent block-off plates (assorted) | 10 pack | $28 | Buy → |
| 6 | Great Stuff Pro Gaps & Cracks spray foam | 2 cans | $18 | Buy → |
| 7 | Evoseal MS polymer sealant | 4 tubes | $48 | Buy → |
| 8 | Boracare mold treatment — 1 gallon | 1 unit | $89 | Buy → |
| 9 | AlorAir Sentinel HDi90 commercial dehumidifier ★ Recommended | 1 unit | $1,500 | Buy → |
| 10 | N95 respirators (box of 10) | 1 box | $18 | Buy → |
| 11 | Tyvek disposable coveralls | 2 suits | $16 | Buy → |
| Total estimated materials (with dehumidifier) | $2,236 | |||
One-click shopping cart — all items pre-loaded at correct quantities for your crawlspace
Open cart →DIY — your cost
$2,236
Materials + your weekend
Hiring a contractor
$4,500–$6,500
Typical KC quote range
04 Step-by-step installation guide
Step 1Seal all penetrations first — before any barrier
Apply Evoseal around every pier baseWrap all pipes with barrier collar + tapeNo gap larger than ¼ inch anywhereMark each sealed penetration with marker
Step 2Install wall barrier on all four walls
Double-sided tape to masonry wall topLeave 3 inches concrete above tapeBarrier runs down + 6 inches onto soilFold at corners — no cuts at corners
Step 3Install floor barrier — start at far end, work to exit
Overlap wall barrier minimum 12 inchesSheet-to-sheet overlap minimum 12 inchesKneel on plywood scrap — not on barrierX-cut around all piers, tape all 4 flaps
Step 4Tape every seam — zero exceptions
Crawlspace-grade 3" seam tape onlyDust surface before applying tapePress firmly — full wall/floor transitionVisual check: no unsealed seam visible
Step 5Install termination bar full perimeter
Pre-drill masonry with hammer drillTapcon screws every 12–16 inchesEvoseal bead along full top edgeOverlap bar joints by 2 inches
Step 6Seal all 8 foundation vents — from inside
Cut foam block tight friction-fit per ventConstruction adhesive + press 30 secGreat Stuff Pro all 4 edges each ventPhotograph each sealed vent
Step 7Install AlorAir Sentinel HDi90 dehumidifier
On cinder blocks — 4+ inches off barrierConnect drain hose — test water flowsSet to 50% RH, fan Auto, auto-restart onLabel with settings for future reference
05 What to expect after installation
24–72 hrs
Humidity starts dropping
1–2 weeks
Musty smell reduces
30 days
Below 50% RH consistently
60–90 days
Full stabilization
Text Jason your before and after moisture readings — he'll confirm everything is performing correctly.
Get Your Own Game Plan
Built for your specific crawlspace — starting at $97.
Get My DIY Game Plan ↓Or text Jason directly: (816) 962-2111