Selkirk / Seldek Twin Wall Chimney





DEKS Europe has been distributing twin wall flue since 2006 after being anointed as the official Selkirk distributor following the liquidation of Selkirk Manufacturing Europe in 2003. In 2012 DEKS Europe introduced a new twin wall system to the UK market named Seldek. DEKS Europe has extensive knowledge and experience in the twin wall chimney market. 


Selkirk Twin Wall Chimney


Selkirk is primarily used on multi fuel or wood burning appliances, however is can be used on oil and gas appliances. The Selkirk chimney system must be installed in accordance with all appropriate building regulations, codes of practice and manufacturers installation instructions. Selkirk Twin Wall chimney in diameters 127mm 203mm are manufactured to comply with BS4543 parts 2 and 3 and EN1856STC is also a Hetas listed chimney system. The STC product designation is: T450 N1 D Vm L50045 G(50).

Click here to download the Selkirk Twin Wall Brochure

Seldek Twin Wall Chimney

Seldek twin wall can be used with either wood burning, gas appliances or pellet stoves / boilers. Seldek can be used under a negative pressure or with the application of some easy fit seal could be a positive pressure system. Sizes range from 100mm to 200mm diameter (larger diameters are available to order). DEKS stock a full range of lengths and components.

Click here to download the Seldek Twin Wall Brochure


Did you know... 




Are you installing a twin wall chimney in a passive house? Struggling to seal the penetration? Use the DEKS air seal sleeve. Just like our Dektites, simply slide over your twin wall and use the sticky base to adhere the seal to the underside of the roof. 

Click here to download information