Splitting A Huge bedroom into office & bedroom

[Nifty]

We have a huge bedroom in our house. I've always wished it was two rooms, especially because the house is 3 bedroom. The master, an office and then we'd love to split the big room for our two girls. Unfortunately to split it into two rooms we'd have to extend the hallway, which would take away room from the master bedroom.

We were going to just divide the room with dressers and allow access to the back portion via the exiting door, then my oldest would have to walk through the room of the youngest.

Then my wife had an epipheny!! She said, "Why not split the room, make the entrance from our bedroom, and just use the smaller portion for your office. That way the girls can have their own bedrooms!"

It was SUCH a brilliant idea!!! Here's the plan:

Top line: Add a full wall
Bottom line: Add a door between master and new office

Here's the new wall going up:

Girls with grandpa watching the new door getting cut into the wall:

 

[elevan]

What a great idea!

 

[Nifty]

UGH, I just noticed the insulation is upside-down!!! GRR!!!

 

[elevan]

LOL

 

[sumi]

It's a great idea! (The division, not the upside down insulation )

 

[canesisters]

Ok.. gotta ask.. why does it matter if the insulation is upside down???

 

[HayZee518]

doesn't matter if the insulation is upside down or rightside up. what does matter is which way the vapor barrier [kraft paper] is facing. because this is an inside wall, the kraft should face both sides. in other words use a double thickness of insulation. this will afford sound deadening if any. you may even get away with it by using a non faced product and line both sides with a poly sheet. insulation prevents air movement between two areas. i.e. an outside wall and an inside wall where there is a temperature difference. when you install heat [forced air] into the bedroom you'll have to take into account the cfm of the furnace. merely splitting a trunk line to feed two rooms may not work. you may need two separate lines off the plenum with a cold air return in each bedroom. if you use a joist space in the floor as a common cold air return, cutting in a register may work as it all goes back to the furnace.

 

[Nifty]

Sorry, I was totally kidding about the upside-down part.

Good point about CFM for the rooms. I figure that the CFM was designed for the whole room prior to the split, so in theory it should be "close enough" for the two rooms that equal the same amount of space as before.

 

[Danny Brown]

It's probably to late now, cause I see drywall standing there but you actually should remove the paper facing from the insulation.

 

[Nifty]

Ya, too late now.

It's got paper on both sides and I'm not too worried about the moisture issues since we're in such a temperate climate.