Crawl space encapsulation: survey
The ground, walls and piers the membrane covers, the laps, rolls and tape, vents and equipment as found, moisture, radon and conditions.
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What you measure
The template's tables and their columns, as the app shows them. Calculated columns fill in as you type.
Ground to cover
- Area
- Length
- Width
- Ground area calculated
- Height under the joists
- Ground nowChoices: Bare soil Gravel Old polyethylene Thin concrete (rat slab) Mixed
- Notes
Foundation walls
- Wall
- Length
- Height to the sill
- Membrane up the wall
- Wall membrane calculated
- Wall typeChoices: Poured concrete Concrete block Stone or rubble Brick Other
- Wall insulation askedChoices: None Rigid board Spray foam To decide
- Notes
Piers and posts
- Pier or post
- Count
- Width
- Depth
- Wrap height
- Pier membrane calculated
- Notes
Membrane and seams
- Membrane
- ThicknessChoices: 4 mil (0.10 mm) 6 mil (0.15 mm) 10 mil 12 mil 15 mil 20 mil Other
- Area to cover
- Seam length
- Lap width
- Laps calculated
- Waste
- Membrane to buy calculated
- Roll coverage
- Rolls calculated
- Perimeter to seal
- Seam tape calculated
- Tape roll length
- Tape rolls calculated
- Notes
Vents, access and equipment
- ItemChoices: Foundation vent Access hatch or door Dehumidifier Sump or drain Duct or plenum Dryer vent Pipe or wire through the floor Other
- Location
- Count
- Width
- Height
- PlanChoices: Keep Seal Add Replace To decide
- Notes
Moisture, radon and conditions
- Test or conditionChoices: Moisture test (plastic sheet) Radon test Standing water Wet soil Efflorescence Mold seen Wood rot Pests or droppings Fallen insulation Debris to remove Other
- Location
- Test doneChoices: Yes No Planned
- Result
- Wood moisture
- Area affected
- Notes
About this template
The ground, the walls and the piers the membrane covers, the laps, rolls and tape, vents and equipment as found, moisture, radon and conditions.
Guide and sources
The visit before a crawl space is covered and sealed, on one sheet. The ground: one row per area to cover, its length and width, the height under the joists and what is on the ground now. The walls: one row per foundation wall, its length, its height to the sill and how far up the membrane goes. The piers and posts: their count, size and the height the membrane wraps them. The three add up to the area to cover.
The membrane: type that area, the length of the seams, the lap width, your waste and the roll's coverage from the chosen product; the sheet gives the laps, the membrane to buy, the rolls, the seam tape and the tape rolls. Nothing is pre-filled. The vents, the access, the drains, the ducts and the equipment are recorded as found and as planned; the moisture readings, the radon test and the conditions as reported.
The hints cite the codes without applying them: Canada and Quebec, NBC 2020 Section 9.18 (heated or not, access, vents, ground cover and laps); US, IRC 2021 R408 (vented or unvented, the vapor retarder, access, debris). NRCan's Keeping The Heat In and Stego's StegoCrawl instructions give the practice; Health Canada's and the EPA's guides frame the radon test, as in the basement survey. No price: the sheet is the measure.
Sources
- IRC 2021, R408 Code
- Stego, StegoCrawl instructions Manufacturer data
- EPA, Citizen's Guide to Radon Government
- NRCan, Keeping The Heat In, 6.3 Government
- NBC 2020, 9.18 Code
- Health Canada, moisture and mould guide Government
- Health Canada, radon measurements in homes Government
- NRCan, Keeping The Heat In, section 6 Government
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