It must be a complete rain shelter not just the spark cap that is normally on a chimney but at the same time it must not be sealed air tight.
Capping off a chimney.
The key to capping the top of the chimney is to install a barrier that will be moisture and tamper resistant and will not be affected by environmental factors such as snow wind and sunlight.
Why should unused chimneys be capped.
Below is a link for such a cowl.
Usually unused chimneys are capped off with a bent sheet metal covering and perhaps a wire strap or weight on the top.
Placing a patio slab over the top of the chimney should only ever be done if there is some other form of.
There are dozens.
Measure the length and width of the flue on your chimney.
Put on heavy work gloves and use tin snips to cut a piece of sheet metal to the same measurements as the chimney opening.
Before you can determine what the best way is to close up your chimney you need to know for how long you.
How to cap a chimney a simple cap.
The correct soultion is for a plaster air vent at the bottom a chiney cowl at the top.
How to measure chimney pots done from the floor with no special kit.
Capping a chimney off with a slab.
Find the flue on your chimney which is the clay or metal.
How to cap a chimney off find the correct flue how to determine which flue is which on multiple chimney flue stacks and smoke test.
Take the chimney down.
If you decide to cap your chimney off yourself please make sure you use the correct ladder safety.
The cowl will let the wind flow tghrough and will dry out the chimney lining and keep it dry.
Best chimney cap which is the best chimney capping method for you and product links provided.
Buy a cap that has the same length.
Keeping rain and animals out.
The best ways to close up a chimney time period.
Use a ladder that extends at least 3 feet 0 91 m above your roof so you can.
Use a breather cowl.
You never block off a chimney even if is not used as there will be many years of damp stuck to the inner linner wall of the chimney.
Get onto your roof with a ladder.
Other helpful maintenance.
This option is best for standalone small chimneys it can be very easy to dismantle a small.