This flashing is designed for use with
twin wall insulated pipe to create the seal where the flue system passes
through a flat, corrugated or plastix roof. The flashing will sit on your roof surface and can be fixed down with a sealant and some screws. There are 5 different sizes within this listing. If you have a flat roof you can use the
smallest one and the larger the pitch the bigger the flashing needs to be.
Diameters (Flashing size):
The diameters listed within the dropdown menu are the overall/outer diameter of flue pipe the Flashing will accommodate, based on a flat roof:
This flashing is not as flexible as
the flashing for tiled roofs and so doesn't stretch as well which means smaller
sizes cannot cope with a pitched roof.
For example, if you had a 6"
twin wall flue pipe which is 8" externally and your roof pitch is around
30 degrees, the best one to go for would be 4-3/4" - 10", or if you
really want to be on the safe side you could also use the 5-1/2" -
11-1/2".
It is always best to use high
temperature flashing. If your installation is properly installed and is over 5
meters tall, this is when the low temperature flashing can be used.
The base dimensions of the 4"
- 8-1/4" flashing is 11"
The base dimensions of the 4-3/4" - 10" flashing is 12"
The base dimensions of the 5-1/2" - 11-1/2" flashing is 14"
The base dimensions of the 6-3/4" - 13-1/2" flashing is 17"
If you have a 5" twin wall
flue pipe, this will be 7" externally and so if your pitch is more than 45
degrees the larger size flashing would be recommended so that the flashing can
cope with the pitch of the roof.
This product can be returned
to us within 30 days of purchase for a refund. You will need to obtain a returns
number from us and return the item in an unused, re-sellable condition for us
to issue a refund.
We strive to offer free shipping to our customers however a minority of locations within the UK incur unavoidable extra charges due to location of courier hubs. Should your order be affected by these charges, you shall be contacted the following business day. This is independent of any eBay carriage calculator.