TV47 Attic Remodel

Plans and bill of materials

Finalize construction plans, prepare corresponding materials list, research suppliers and decide on supplier, assemble bill of materials, place order, arrange payment and delivery

Preparations and layout

Order

  • Arrange, and be on site to receive, help unload, and sign off on first main delivery of construction materials.
  • Move all materials to attic or other sheltered location out of weather

Clean-up

  • Research and purchase an appropriate jobsite vacuum cleaner
  • Purchase accesory cleaning supplies: a few good push-brooms, dust pans, contractor/heavy-duty garbage bags.
  • Empty everything west of chimney, such that you are left with bare slab. I.e. move to a safe location, dispose of, or otherwise deal with all old furniture, all book/Županičiceva boxes, all lingering Dominik stuff, etc.
  • Clean slab of dust so that you can snap visible chalklines
  • Remove T&G finish from ceiling and store safely

Layout

Snap chalklines marking perimeter of subfloor (attic partition wall, perimeter walls, bathroom walls):

  • For bathroom east wall, drop a plumb bob from rafter as reference—center wall below rafter.
  • For bathroom south wall, drop a plumb bob from beam as reference—wall flush with beam so drywall can come up over beam.
  • For bathroom north wall place toilet bottom plate relative to downstairs bathroom vent hole. For bath bottom plate measure perpendicularly out from south wall, referring to plans.
  • For bathroom west wall measure out from west exterior wall such that bathroom west wall aligns with remaining west perimeter wall.
  • For main east partition wall, place wall on interior side of chimney rafter, to allow sufficient space between chimney and wall on exterior side (fire safety, etc.)
  • Mark position of toilet, sink, bathtub, and floor drain on bathroom floor for plumber to reference

Plumbing rough-in (pending plumber availability)

  • Install radiator supply and return lines with stub-out that will reach up into bathroom south wall
  • Run DWV and supply lines from basement to attic.
  • Lay DWV pipe for upper bathroom toilet, bath, sink, and floor drain, accounting for 50 mm XPS + 50 mm screed + 10 mm tile floor.
  • Lay supply lines for upper bathroom toilet, bath, and sink, with stub-outs accounting for 50 mm XPS + 50 mm screed + 10 mm tile floor.

DWV ventilation

Set up ducting/vent lines for upper bathroom vent fan, upper bathroom DWV vent stack, and lower bathroom ventilation:

  • Install DWV vent lines for upper bathroom in west wall and leave stub-out in north wall utility cavity.
  • Install vent lines for lower bathroom in west wall and leave stub-out in north wall utility cavity.
  • Install duct for ventilation fan in west wall and leave sufficient stub-out to reach into bathroom.

Set up ducting for ventilation fan through roof gable vent.

Subfloor

  • Build subfloor grid: bottom layer is 5 cm and runs north/south to accomodate radiator lines.
  • Install electrical conduit and cable under subfloor grid, allowing enough stub-out to reach eventual junction boxes in wall (Run trunk lines along N/S perimeter walls where floor grid won’t reach, then branch into interior as needed.)
  • Install insulation in subfloor grid
  • Cover subfloor grid with vapor retarder
  • Cut and install OSB subfloor floor panels

Ceiling insulation

  • Install 150 mm rock wool insulation between rafters
  • Pad 140 mm rafters with 10 mm XPS to match depth of rock wool
  • Install horizontal battens to hold second layer of rock wool
  • Install 50 mm rock wool insulation over rafters
  • Install vapor barrier over insulation
  • Seal vapor barrier seams with sealant tape

Multipor: north and south walls

  • Install Multipor along north and south walls
  • Cut chases and cavities for electrical conduit and electrical boxes
  • ~~Install electrical boxes (build plaster anchor cavities behind boxes into which to anchor boxes)-leave boxes cca 7 mm proud of wall to account for final render coating ~~
  • Finish Multipor with initial render coating and fiberglass mesh
  • Finish Multipor with second render coating
  • Finish Multipor with leveling compound (izravnalna masa) to prepare surface for painting
  • Paint with two coats

Multipor: west wall

  • Plane/level out west wall with plaster, to provide a planar surface onto which to install Multipor
  • Install Multipor along west wall, cutting/shaping as necessary to accommodate plumbing lines
  • Shape Multipor around window to achieve splayed window jambs and allow more light into room
  • Build structural concrete anchor posts under windows into which to anchor radiator
  • Cut chases and cavities for electrical boxes and conduit for outlets, lights, and ventilation fan
  • Install electrical boxes and conduit (build plaster anchor cavities behind boxes into which to anchor boxes)-leave boxes cca 7 mm proud of wall to account for final render coating
  • Install ventilation fan in place of original gable vent
  • Patch all conduit runs with plaster + leveling compound
  • Finish Multipor with initial render coating and fiberglass mesh
  • Finish Multipor with second render coating
  • Finish Multipor with leveling compound (izravnalna masa) to prepare surface for painting
  • Paint with two coats

Floor part two

  • Reinforce floor with Turbo screws + supporting shims at all points where cut to run water lines
  • Shim floor extension around permeter to level with main floor
  • Stress-test for any remaining squeaky areas and reinforce as necessary
  • Clean out all construction waste from floor and vacuum floor
  • Install glass wool insulation in floor grid
  • Install vapor retarder over floor
  • Install OSB subfloor, including extensions for expanded area after switch to Multipor walls

Framing: East wall

  • Frame east partition wall, building on interior side of chimney rafter.
  • Sheath interior of east partition wall with OSB
  • Prototype/proof-of-concept for proper installation of hollow-wall electrical boxes
  • Install electrical conduit, boxes, and cable on east partition wall
  • Install blocking for radiator and electrical panel
  • Route conduit/cable out of wall and onto beams/ridge to supply lights
  • Insulate east partition wall
  • Attach T&G finish to outside of east partition wall

Framing: Bathroom partition walls

  • Frame bathroom partition walls
  • Sheath interior of bathroom partition walls with OSB
  • Install blocking as needed…
    • in south wall for radiator
    • in east wall for sink
    • in east wall for over-sink cabinet
  • Install electrical conduit, cable, and junction boxes in bathroom partition walls
  • Install and hook up electrical connection for bathroom ventilation fan in bathroom west wall, connecting to already-installed ducting

Bathroom: drywall

  • Install ceiling slats to hold ceiling drywall

Finish carpentry

Interior finish

  • Install slats along ceiling onto which to attach T&G finish
  • Install T&G finish on interior walls exposed to living space: west, north/south, east, bathroom south, bathroom east.
  • Apply oil finish to all T&G surfaces
  • Grind down/sand exposed timber beams with angle grinder flap disk
  • Oil exposed timber beams

Doors/windows

  • Remove and deep clean windows
  • Make jambs for bathroom and main door
  • Install entry door and trim

Trim

Trim floor/wall, wall/wall, and ceiling/wall junctions

Electrical finish in living space

  • Install all switches and outlets
  • Run conduit for lights out of east wall
  • Replace existing 5G1.5 supply cable from main panel to attic with 5G2.5 cable
  • Run UTP cable from downstairs to attic office outlet for Ethernet
  • Install box with outlet + Ethernet jacks on exterior of east wall for attic router
  • Move attic subpanel to east wall simplify and clean up exposed wiring and add circuits for attic living space
  • Move cables/conduit supplying exterior-attic lights and outlets into east wall to be compatible with new panel position
  • Connect ventilation fans to power and install
  • Install lights in main living space

Bathroom

Floor screed

  • Install 50 mm of XPS over cement screed
  • Build forms for cement screed
  • Install expansion joint tape around perimeter of bathroom
  • Pour/lay screed

Cement board and drywall

  • Install cement board on walls and ceilings, going all the way to floor slab with cement board.
  • Finish cement board around bath with waterproof coating, e.g. Murexin KEMA HIDROSTOP

Next

  • Finish floor with waterproof coating, e.g. Murexin KEMA HIDROSTOP or Murexin KEMA Hidrostop Penetrat
  • Build platform for bathtub
  • Build pony wall to hold bathtub supply lines
  • Build in toilet frame structure with AAC
  • Tile bathroom floor and add a row of tile skirting around perimeter of walls.
  • Install “doorstop” to prevent water from draining out door
  • Finish and paint drywall surfaces with a silicate mineral paint
  • Install switches, outlets, and lights

Plumbing final (pending plumber availability)

  • Install sink, toilet, and bathtub
  • Install radiator in bathroom
  • Install radiator in living space