In The Stove Yard's experience it is usually possible to create a larger opening of approximately 900mm x 900mm (3'x3') without too much work in most chimney breasts. This will leave sufficient airspace at the sides and top for typical 5kW output stoves, except for some of the wider 5kW slimline stoves.
Accordingly, what is a standard fireplace opening?
A typical 3-foot-wide fireplace opening should only be 29 inches tall. The firebox depth should be 16 inches (not including the thickness of the decorative brick that faces the fireplace). The distance from the floor of the fireplace to the bottom of the damper should be 37 inches.
Secondly, how wide can you open a chimney breast? the opening in the chimney breast is approx 500mm wide, on one side there is one brick thick masonry (215mm thick) the other side there is 2 No. half brick masonry forming the flue from the downstairs fireplace (total around 350mm).
Also asked, how do I widen my fireplace opening?
Locate the lintel of the fireplace -- a bar made of stone that supports the foundation. Proceed to knock down bricks with a hammer to make the opening of the fireplace bigger, leaving the lintel intact. Do not remove more than a few bricks on each side.
Is it easy to open up a fireplace?
If the fireplace has been filled in with bricks, start from the vent and slowly knock out a few at a time with a club hammer and bolster chisel. You may find it easier to remove the plaster from the area first and then chip out the bricks, one by one, once you can see where the mortar joints are.
How do you size a fireplace insert?
To determine the right size, measure the following: opening height; opening width; opening depth (top and bottom); rear width and the depth of the hearth (area in front of fireplace). LOCATION: A fireplace insert needs to be placed in an existing masonry or factory-built fireplace with a working chimney.How do you measure a fireplace opening?
Helpful Tips:- Measure the front opening of your fireplace.
- Measure the back width of your fireplace.
- Measure the depth of the floor from back wall to the front of your fireplace.
- Measure the inside height of the fireplace from the floor to the lowest point inside the fireplace.
What is standard mantel depth?
A depth of 7 inches is ideal for most mantels, as it allows plenty of room to accommodate decorative objects. Keep in mind that the top and the sides of the mantel should be the same depth.Is my fireplace opening too big?
If a fireplace opening is too large it will allow more air into the fireplace than the flue can exhaust. Fortunately, this is an easy problem to fix. By installing a fireproof shield at the top of the fireplace opening, the effective opening can be reduced. Glass doors could also be used.What is the average depth of a fireplace hearth?
Basic Hearth Dimensions The hearth also needs to extend 8 inches to each side of the opening. The thickness of the hearth should be a minimum of 4 inches.What are the dimensions of a fireplace?
Size of Room Fireplace Opening in Feet in inches 14 x 28 40 to 48 16 x 30 48 to 60 20 x 26 48 to 72 Page 2 the Rumford Fireplace. The Standard Fireplace (see p. 4-5) has a short firebox with the back wall leaning forward.How thick is a fireplace wall?
1. Chimney wall thickness should be a nominal 4 in. (100 mm) unless no flue liner is used, in which case a nominal 8 in. (200 mm) is required.How much space do you need around a fireplace?
Be sure your fireplace location is at least 36 inches from any combustible wall that lacks protection. If you add a wall protector, you may be able to reduce the clearance to 12 inches. Also, you should plan for a non-combustible hearth extension on the front and side of the unit.What is a fireplace lintel?
The lintel is a piece of steel that holds up the top row of bricks in the fireplace opening. It is used by the mason during installation of the fireplace to hold the bricks firmly in place until the mortar dries.How do you extend a hearth?
Also, the hearth extension must extend at least 16″ from the front of the fireplace and 8″ on the sides for smaller fireplaces. When the opening of the fireplace is at least 6 square feet, the hearth extension needs to extend at least 20″ from the front of the fireplace, and 12″ on the sides.Can I widen my fireplace?
You can widen it as much as you want as long as the exsisting lintle has support on each end. That isn't true at all - it is likely that any support under the existing lintel is part of of a column.How messy is removing a back boiler?
This is because removing a back boiler tends to leave quite a bit of mess behind, and usually involves removing the boiler leaving a large hole in the wall. In most cases, you can't keep your fireplace working when a back boiler is removed in this way.How do I get rid of an old fireplace?
Removing a tiled, brick or stone hearth Use a hammer and cold chisel to make a hole in the mortar so that a crowbar can be inserted to lift the hearth – once the mortar bond is broken, it will need a couple of people to carry it outside where it can be broken up in the same manner as a tiled fire surround.How do you fit a fireplace?
Fitting a concrete fire back and preparing the fireplace opening- Cover the hearth with an old blanket.
- Place the insert on top of the hearth.
- Place the surround against the insert to that it lies flat against the chimney.
- Mark out on the wall the area which needs to be opened up.
- Open up the required space.
