Roof Flashing For Flat/Corrugated Roofs

This flashing is to be used with twin wall insulated pipe. This is used when a twin wall flue pipe passes through a flat, corrugated or plastix roof. The flashing will sit on your roof and then it can be fixed down with a sealant and some screws. There are 4 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.

 

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".

Pipe Diameters (Flashing size):

3"-6" (76-152mm)

4"-7" (95-197mm)

5"-9" (121-254mm)

6"-11" (140-292mm)

7"-13" (175-330mm)

 

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.

• Made of silicone
• High/ Low Temperature option
• Suitable for profiled sheeting and flat panel roofs/surface
• Made specifically for maximum resistance to weathering
• High Temperature flashing resistance is from -74C to 260C
• Low Temperature Fla flashing shing resistance is from -55C to 135C
• Base dimension 10 3/4" x 10 3/4"

 

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.

 

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