Installation Guide

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Required Materials
The following materials should be used to create the MemBrain
™
Air Barrier System:
• MemBrain
™
sheeting available in 8' 3", 9' 3", 10' 3" and 12' 3" widths, 100' lengths (2,515 mm, 2,819 mm,
3,124 mm and 3,734 mm widths, 30.48 m length
• Recommended Sealants: Acoustical or silicone-based sealants conforming to ASTM C 920 or C 834 specications.
• Recommended Tape: Canadian Construction Materials Centre (CCMC) evaluated or other code approved
sheathing tapes.
Roof/Attic/Ceiling Applications
1. Staple MemBrain
™
to the bottom of ceiling joists every 12 to 24 inches.
2. Seal the lm to interior and exterior wall top plates using recommended sealants.
3. Fasten the film using staples through the sealant to the plates every 12 to 24 inches.
4. Allow the film to overlap at the corners a minimum of 6 inches.
Exterior Wall Applications
1. Start at a corner of the room where an interior partition wall or door jamb meets an insulated exterior wall.
Lay the MemBrain
™
roll on the floor, with the end touching the bottom of the partition wall or jamb.
2. Unroll the MemBrain
™
along the insulated wall, until the next corner is reached. Cut the lm perpendicular
to the insulated wall so that the overall length is about 8 to 12 inches longer than the wall.
3. With the 3-inch offset edge parallel with the top of the insulated wall, place one corner of the cut sheet at
the top left or right corner of the wall. The factory cut edge should be covering the top edge of the top sill
plate. The cut edge of the sheet should wrap around the inside corner at least 4 inches. Ensure that the folded
material is facing the room (the print across top header will be facing out). Anchor this corner with staples.
4. Apply recommended sealant over ceiling overlapped film material at the top plate, to the frame around
window and door rough openings and to the bottom plate (See MemBrain
™
Air Barrier System Details, and
Figure 17, page 10). Working towards the opposite corner, pull the sheet tight, and staple the offset edge to
the top sill plate through the sealant bead. Staples should be at least 12 to 24 inches apart.
5. After stapling to the opposite corner, allow the folded sheet to unfold to the oor. (See Figure 2)
6. Pull the sheet downward and staple through the sealant bead to the bottom sill plate. Then staple at 12- to
24- inch intervals along each stud. Effort should be
made to minimize wrinkles along the stud surfaces
to make drywall installation easier.
7. Follow the MemBrain
™
Air Barrier System Details
below to ensure an air-tight assembly.
Figure 2: MemBrain™ sheeting orientation for wall installation method.
Folded Film to
Unfold into Room
Top Edge
of Offset