Tips for working in the attic have a plan in place planning.
Impact of open chase in attic.
Here s an example of an all too frequent attic air sealing defect.
I believe that this went into effect in 1992 with ubc 702 8.
From the crawl space to the attic a conduit usually smaller than a chase less than or equal to 1 and carries fewer.
Shared chimney chase open in attic this is from a 17 year old townhouse i looked at yesterday.
Be sure that the.
Very often dropped soffits and chases are left open to the attic providing big connections between the attic the basement the framing and the outside.
There is 300 difference there but the cost they give you is about a third difference and open cell foam at 12 inches will not give you the performance of 2 inches of closed.
From a wall switch box to a breaker panel while a chase often simply goes from one open space to another.
A conduit usually goes from a wall plate or some other firm destination to another solid destination.
The shared chimney chase for the fireplaces is open in the attic and you can see the attached neighbor s flue for their fireplace from inside the attic of the unit i inspected.
That air also finds holes in the chase walls and goes directly into the house.
It makes the attic hard to navigate and a place you don t want to spend much time in.
There s usually at best a single bare incandescent light bulb that hardly illuminates any of the space.
As a follow up on my last post what i referred to as a chase is actually called a vertical fire block that has the same function as the horizontal fire block that surrounds the flues of prefabricated chimineys on attic floors.
The hole at the top allows hot or cold attic air to go down through the hole and make the house uncomfortable because drywall has very little r value.
A leaky envelope means you re wasting energy wasting money allowing dust and perhaps critters to enter your home and often creating comfort problems.
In this video watch james crawl through a 7 5 x 14 chase opening in a basement.
Fireplace chimney creates chase no draft stopping at top plate creates a chase as seen from the attic.
He then has to shimmy his way up two stories in a wall cavity to seal off an attic opening that was allowing air.
It is a framed area that is not capped off and you can actually see down between the house walls often all the way to the floor below.
This bathroom framing chase is a trouble spot.
An open chase is best observed in the attic.
The myth that open cell is more economical is bullshit.
But upgrading your attic illumination is one of the easiest ways to make the space more inviting and better to organize.
