Burnsville envelope desk
Blue Ocean Construction Inc installs spray foam, kraft-faced fiberglass, attic loose-fill, and air sealing as one thermal envelope for builders and property programs. The opening photograph is the first layer: closed-cell spray foam filling open wood stud cavities.
01 — Spray foam
Open studs get a continuous foam lift. Rim-joist bays get the same product against the sill plate and rim board so the floor edge is not an open path.
Foam object
The hero wall shows closed-cell spray foam fully filling wood stud cavities. Below grade, the same foam is placed in each rim-joist bay against the sill plate and rim board, with floor joists left visible above the lift.
02 — Fiberglass
Where the assembly calls for fiberglass, we set kraft-faced batts in the studs and keep compressed packages on the subfloor until the wall is ready.
Batt object
Pink kraft-faced fiberglass is cut around electrical boxes with the paper facing the interior. Unopened compressed packages stay stacked on clean plywood until the next wall is opened.
Compressed kraft-faced batt packages stay on clean plywood until the next wall is opened. We count packages on the ticket and do not stage foam drums in the same bay.
When the wall is ready, a package is opened at the studs so the facing can go toward the conditioned side and the cut can meet the electrical box.
03 — Attic
The attic plane is the ceiling. Loose-fill covers the joists; rafters and roof deck stay above the insulation. The hatch gets its own lid.
Loose-fill fiberglass is blown to the specified depth over the ceiling joists so the thermal layer sits on the ceiling, not on the roof slope.
Rafters and roof deck remain in the vented volume above the fill. We do not bury the deck unless the drawing calls for a sealed cathedral assembly.
The access opening is finished from below: a weatherstripped cover with rigid foam on the back, set in the ceiling drywall so the hatch is not a hole in the attic plane.
04 — Air sealing
Foam and fire-rated caulk close plumbing and electrical holes through the top plate before finishes hide the plate.
Seal object
Every pipe and cable through a wood top plate is sealed with canned foam and fire-rated caulk. That work is listed with the attic hatch lid so air sealing is not a leftover punch item.
| Assembly | What is installed | Where it sits | Buyer record |
|---|---|---|---|
| Spray foam wall | Closed-cell foam in open studs | Wood wall cavities | Wall photograph |
| Rim joist | Foam at sill and rim board | Basement / floor edge | Bay run photo |
| Fiberglass wall | Kraft-faced pink batts | Studs, facing interior | Box-cut photo |
| Batt stock | Compressed packages | Plywood subfloor | Count on ticket |
| Attic | Loose-fill over joists | Ceiling plane | Depth check |
| Hatch | Weatherstrip + rigid foam lid | Ceiling opening | Underside photo |
| Air seal | Canned foam and fire-rated caulk | Top-plate penetrations | Plate close-up |
| Test | Blower-door frame and fan | Exterior doorway | Leakage number |
05 — Energy testing
When the envelope is closed, a blower-door frame and fan are sealed into an exterior doorway so leakage is measured on the same house that received foam, batts, attic fill, and plate seals.
Foam, batts, attic fill, hatch lid, and top-plate seals are accepted before the fan is set.
The blower-door frame and fan seal the open exterior doorway. Interior rooms stay empty for the test.
Leakage is recorded against the assembly table so a failed number points back to a named layer.
The doorway photograph and the number travel with the Burnsville envelope book.
06 — Desk notes
Each job is a stack: foam or batts, attic plane, seals, hatch, then the doorway test. We do not sell ocean-view work or general framing.
No. Blue Ocean Construction Inc is insulation, air sealing, and energy testing. Framing and roofing stay with the general contractor.
Yes. Walls or rim joists can take foam while other walls take kraft-faced batts. The table keeps the two assemblies on separate rows.
Only when the ceiling plane is in the scope. The hatch lid is required whenever the attic opening is in the same book.
After the named layers are in place. The fan sits in an exterior doorway; we do not test a house that still has open top-plate holes.