How To Frame A Chimney Chase
Apply a bead of fire caulk or expandable foam to the top of the opening.
How to frame a chimney chase. Set the materials around the pipe securing the materials to the open chase with screws or nails. Cap the chimney. Cut the end of the 2-by-4 that sits on the roof deck at the corresponding deck slope angle so it sits flush on the deck.
Just installed a new RSF Opel 3C fireplace in an addition to an old house. The chimney cap goes over the top of the brick flue housing. In the Library navigate to Home Designer Core Catalogs Shapes select a shape and click in the floor plan to place it.
On a larger chase the metal cap is creased to make it more rigid - like a miniature hip roof in which case the plywood cap is also. It should extend past the chimney wall by at least 2 inches 5 centimeters and have a drip edge to channel water away from the chimney. To create a chimney chase Start by opening the plan in question and going to View Library Browser to open up the Library Browser.
Take a look at the photo above showing the inside of a wood-framed chimney chase. Advertisement Step 1 Build a footing that is adequate to support the chimney and its enclosure. Cut a header from pass between front posts above fireplace.
Lay pieces for front of chase on ground at narrow edges. To build a fire-retardant chimney chase one might use FIRE RETARDANT PLYWOOD and sure one could try spraying a fire-retardant coating but those are not common practices. Most common use of a chase.
We make the cricket wider than the chase by about 6 inches on each side. Cut a 2-by-4 to the appropriate length to extend from the chimney wall and parallel to level out to its anchor point on the roof deck. We are only in the 70mph wind design load.
Free standing wood stove pipe will go thru an ICF wall then vertical double wall stove pipe along the outside of a single story home. Do you use 2x6 or larger for framing to reduce deflection. Extending the cricket past the corners helps divert water flowing down the roof away from the chase and also simplifies step-flashing installation.
The chase will be clad with cultured stone lumpy stucco so we want to make sure we get all the flashing details right. A chase is usually built within a wall or ceiling and isnt visible to the eye although sometimes a chase protrudes from a wall due to structural necessity. The installation of the brick is shown in a series of photographs from covering the sheathed chase with felt paper to sticking the brick to the mortar to creating a corbelled effect near the top of the chimney with courses of real brick to stacking the L-shaped corner pieces grouting the joints and capping and flashing the chimney.
The footing should be a minimum of 6 inches larger all around than the maximum. Place the storm collar around the vent pipe resting it on the top of the chimney cover. Use your caulk gun and tube of silicone to seal around where the storm collar meets the vent pipe.
Im looking for some advice on building a wood framed chimney chase. Such an enclosure when run up the outside of a house is properly called a chimney chase. A greater fire risk in chimney chases might occur if birds or.
Attach it to the deck with framing nails of. Excavate around the preexisting chimney to determine that the footing used to support it will also support the enclosure. Building a chimney chase.
How do you seal a chimney chase. I figure the pipe and chase will have to extend 6-7 ft above the eave. On a small chase we use a flat cap with a 3- to 4-inch-tall collar sized to fit snug to the chimney pipe.
Seal the metal collar down to the materials with fire rated caulk or fire rated expandable foam. Heres what I would like to do. Bout to lift frame sections into place using a rig I have set up.
Cut short lame asparagus those that do not run full distance on floor so that front between top plate and headboard. The chase cap looks somewhat like a shoebox lid with a collar around the hole for the pipe and a hem bent down around the chase on all four edges. This chimney needs to be approximately 12ft taller than the eave to pass code 10-3-2 rule for chimneys.
This will keep any rain from getting down the side of the vent pipe inside the chimney. While face on the right is 912 face on chimney side is 1112. Chase is on the gable end of a single story home.
For wind resistance if the chimney chase is passing through the roof structure rather than abutting the roof structure end it should be framed continuously through the roof structure not simply tacked on top of the roof sheathing. Codes allow a maximum of 90 degF temperature rise above ambient inside the the chimney chase - well below the combustion or pyrolysis point for plywood. Then complete cutting posts for sides of chimney chase.
We have just had a gas fireplace installed and inspection hopefully on Monday then we can start to button it up. It will get a 6 double-wall insulated pipe with 2 clearance requirements. I was also wondering about deflection from the wind for the stone.
New Brick Chimney UPS Shippable in 3-5 days from OhioReady to Cut Pitch Mount on Roof in Minutes. Recommended chimney cap materials include stone and. Jan 26 2020.
County Oregon so climate Zone 4c looking for advice on flashing detail for a framed chimney chase. Chimney chase was constructed on outside wall of the addition with 2x4 wood stud construction Roxul mineral wool insulation in stud bays Zip sheathing at the exterior Thermoply at the interior for vapor barrier and 58 fire-rated GWB over that. A chase is a small enclosed space which is used to accommodate piping duct-work or other utilities in home or building construction.
How Do You Frame a Wood Chimney This chimney chase is going up the side of the building.
