5" Firestop Spacer

Our Price:


Incl. VAT: £39.02

Availability: In stock

Product Code: TWFS105

5" Fire stop spacer T/W



 Twin wall Warranty

5" Firestop Spacer to fit to the underside of your rafters where flue comes through the ceiling. 

Made from heavy duty galvanized steel.

(Please note: We base all of our twin wall system on the internal diameter measurement).


Same day dispatch if ordered before 2pm.



 Firestop Spacer


View Our Installation Guides:

Bungalow Internal Installation

Bungalow Installation guide

External House Installations

External Installation

Straight Internal Installation

Ventilation Installations


Our twin wall insulated is a simple push-fit  joint system. Build your system by placing each piece on top of the previous and push together to make the join. This is the simplest system to construct on the market today.


Building Regulations

Download Building Regulations Document J (effective October 2010) below

Download Document J

(Right click link, then select "save file as..")