Discussion in building started by overlandrover 14 apr 2007.
Capping unused chimney flue.
Only one chimney is still in use for a multifuel burner one was sealed many years ago while the other two have vents into the bedrooms where fireplaces used to exist.
Unused chimneys not only waste a lot of heat they also pose a potential damp problem as well as being a cause of smoking fireplaces and stoves.
If your home is a basic one fireplace one chimney pot affair this will obviously be a simple matter but a lot of homes will have 4 or more chimney pots that serve 4 fireplaces some of which may be blanked off bricked up or unused.
As a rule of thumb taking a common semi detached home using.
Last year we had our soild fuel boiler replaced by an electric boiler.
The fireplace flue can be a major source of energy loss.
There are a few products you can purchase to block the chimney just above the damper.
One is an inflatable balloon type product that will seal the flue.
How to close an unused chimney.
Write down your measurements so you don t forget them.
Flue ventilators can be found on our chimney pot page.
Unused though they can waste a lot of heat up the chimney.
The flue ventilator stops rain entry to.
Use a tape measure to find the length of the flue on the longest side.
Find the flue on your chimney which is the clay or metal tube that extends out from the top of your chimney.
Http www fixmyroof co uk videos and guides chimneys chimney capping in this video i show 3 different ways to cap off a disused chimney that does not alter.
When used daily as they are intended to be used fireplaces can be efficient.
Capping an unused chimney flue.
How to determine which chimney flue needs capping.
Sealing your older unused chimney should not be a complicated task as long as attention is paid to prevention of air intrusion as well as environmental and pest control.
Capping the flue is one of the best ways to close up the top of the chimney as it will still allow air to get in and out preventing condensation from building up.
Cooled or heated air from inside your home can escape through the chimney causing your hvac system to work.
Capping unused chimneys flue ventilators uk.
Insulating the bottom of the chimney.
Sealing and insulating the clay flue at the top and bottom of the stack will ensure the job will yield these desired results.
Then find the width at the widest point.
Measure the length and width of the flue on your chimney.
The technician that fitted the electric boiler cut back the flue the the ceiling filled part of the flue with insulation and then applied cement to the underside.
