Rough Plumbing Subcontractors

<<< On-Site Checklists


Site generally clean and safe
  • We do a great job cleaning for our electricians, but Doug would appreciate a clean site too
  • If you leave an empty trash bin for him, it will be appreciated
Check joists and walls against plumbing layout

Phase I - Waste & Vent

Crawl space access ladder installed
  • Use PHILIPS HEAD SCREWS ONLY to attach to framing, so they can be quickly removed later by subcontractors when necessary
Clean Out Sump-Pump Pit
  • Use a shop-vac to get it generally clean and dry
Blocking and deadwood installed
  • It is annoying and difficult to install after pipes are in bays or going through top plates
Stairs to 2nd story installed
  • Sometimes Doug does starts Phase I while 2nd story is still inaccessible
  • Coordinate with Doug about your schedule and when the stairs will be in

Phase II - Gas & Water

Siding and prep for hose bibs
  • Generally is in 3rd or 4th row of lap siding
  • Decide on placement with plumber
       •   Try to avoid placement on top of porches, especially if there is a no-step entry into house
  • Paint behind bib to avoid later touchups
  • Install a knee-wall for hose bib water line in house, if necessary
Prep tub opening

Standard rough frame opening: 60⅛"
If running perpendicular into party wall: 60¾" to allow for ⅝" drywall placed behind tub

  • Check for square and consistent width in full volume of tub opening (base, front and back; mid-height front and back)
    • Cut a 2x4 to size to quicky check that tub will fit neatly
  • Plumb and fur out walls as necessary so that tub and drywall all plane together well
Install or clear necessary studs
  • Clear space of 16" between studs in plumbing wall, centered on drain opening
       •   This is where water lines and shower head will be
  • Stud (installed flat) centred at 32" from back tub wall on each side
       •   This suports tub surround nailing flange and gives nailer for drywall
Install grab bar blocking

Required: in first floor baths
Bonus: all other baths, all the time 😊

  • Install between 32"-38" A.F.F. (Above Finish Floor) in walls behind tubs 
       •   But not in plumbing wall blocking water lines
       •   This same blocking goes in walls behind and next to toilets
Prep exterior walls behind tub
  • Complete sealing envelope as necessary: caulk, firefoam, rockwool, etc
  • Install R19 batt insulation into wall cavity
  • If on party wall or shear walls: cover insulation with ⅝" drywall or as called out in plans
       •   Use a continuous sheet or seal seams with mud & tape
       •   This is part of the fire-proofing
  • If on exterior wall (and not a shear wall): cover insulation with Thermoply and tape seams
Provide tub cover
  • Find or make a tub cover ASAP
  • Generally made of 1" blueboard with lid made of OSB or subfloor, with rounded corners