Temperature the gas being expelled by the flue is hot as it s generated when the boiler is burning fuel so it s important to keep it away from anything made out of plastic such as guttering as you won t want it to melt.
Chimney flue regulations uk.
Came into force in the uk from 1st of july 2013.
Many require a 6 flue.
You will normally then use the corresponding sized vitreous enamel flue pipe for the first section of flue from the stove to take you into the chimney.
Fitting altering or replacing an external flue or chimney or installing a new woodburning stove all fall under the building regulations although they are not typically tasks that require planning permission.
A 225mm diameter flue of a similar height will support a fireplace with a dimension no greater than 550mm by 550 mm 22inches by 22 inches.
The construction and application of chimneys and flues is covered by uk building regulations in conjunction with the relevant european and british standards.
The minimum chimney height recommended for minimum performance of wood burning and multi fuel appliances is 4 5 m from the top of the appliance to the top of the chimney.
Most solid fuel appliances in the uk have either a 5 125mm or 6 150mm flue outlet on the top or rear of the appliance.
A maximum of 4 bends up to 45ยบ angle is allowed.
A chimney flue should never be less than 5 diameter and only certain stoves can use them defra approved stoves that allow a 5 flue can be attached to this diameter flue.
The construction products regulations.
The regulations state that the flue must be between 30 60cm away from any parts of the home that open up with the exact distance depending on the size of your boiler.
As a rule of thumb the chimney fireplace opening should be not less than 1 7 th to 1 8 th of the area of the fireplace opening if the flue or chimney height is above 6 metres.
This 2010 edition incorporates changes to reflect the renumbering of regulations in the building regulations 2010 and building approved inspector s etc regulations 2010.
Designers architects builders and heating engineers should be aware and understand the requirements on construction products.
Some require larger diameter flues.
The construction products regulations require that all chimney and flue products are ce marked.
Whilst these differ in emphasis they all mandate the safe application of the chimney no matter where and how used.
Of the european designation system for certain flue and chimney products.