Penetrations

Block Pens:

  • Must be clean of dirt, sawdust etc.
  • Spray the area with adhesive around the pen­ the spray must sit for 2­3 minutes to tack up before covering the pen.
  • Membrane should be at least 6” around all 4 sides
  • The membrane must be lipped on the penetration ifself in order to insure a proper seal.
  • We DO NOT cover holes made in the wrong places by the MEP.
  • Also do not to the pen if the whole in the block is more than a tennis size.
  • The bottom piece of membrane must always be done first, then sides, top.
  • Use the same seam tape as the housewrap paper used to run around the outer edge of the membrane,


Paper Pens:

  • The housewrap on the wall must be cut back from the penetration at least 1” to expose the wood.
  • always start from the bottom and work way up.
  • the membrane/flex must be lipped on to the penetration to ensure proper sealing
  • Remember: all pens must be rolled on with a j roller to ensure proper sealing.
  • All penetrations in paper must use the FLIP method= cut the paper away from the peneatrion at least 1 inch to expose the wood- then make 2 diagnol cuts in the top and lift it up . (same as a window just smaller). attach the membrane, bottom side side top then lower the paper over the top membrane- cover the 2 cuts with the same material that was used on the penetration.