Unite pipe flashings
Pipe Flashings for Simple Pipe Penetrations
Pipe flashings for simple penetrations
Our pipe flashings are designed for simple pipe penetrations where you need a clean seal around the pipe and a base that can be shaped to the sheet profile. The range uses an aluminium base that is easy to form and a weather-resistant EPDM rubber body for dependable sealing.
This family covers pipe diameters from 5 to 483 mm across sizes N11-N19. Our pipe flashings can be used for steel, copper and PVC pipes, are water- and dustproof, withstand temperatures from -65°C to +100°C, and are available in black.
Choose the right pipe flashing size
Smaller pipe flashings
Choose our smaller pipe flashings when you are sealing slimmer service penetrations and smaller pipe runs. This part of the range covers pipe diameters from 5 to 127 mm and is the right starting point when a neat fit matters more than maximum spread.
See sizes and range details for our smaller pipe flashings on page 63 in the catalogue
Mid-range pipe flashings
Use our mid-range pipe flashings when the penetration is too large for the compact sizes but does not need the biggest base. This part of the range covers pipe diameters from 75 to 230 mm and suits many standard roof penetration situations.
See sizes and range details for our mid-range pipe flashings on page 63 in the catalogue
Larger pipe flashings
Choose our larger pipe flashings when you are working with bigger pipes, larger penetrations or projects that need more reach in both the opening and the base. This part of the range covers pipe diameters from 150 to 483 mm.
See sizes and range details for our larger pipe flashings on page 63 in the catalogue
Detailed pipe flashing sizes in our catalogue
The catalogue page below gives you the full N11-N19 size overview, including base diameter and pipe diameter range, so you can match the flashing to the penetration before ordering.
It also shows the installation sequence, which is useful when you want the base to follow the sheet profile properly and the seal to sit tight around the pipe.
Need help choosing the right pipe flashing?
The right choice usually comes down to pipe diameter, profile shape and how the penetration needs to be sealed against the substrate. We help contractors, installers and buyers choose a pipe flashing that fits the job properly from the start.
Talk to us if you want a quick recommendation before ordering or if the penetration sits in a more demanding build-up and you want to confirm the most practical solution.
How do I choose the right pipe flashing size?
Start with the outside diameter of the pipe and choose the flashing size whose pipe diameter range covers that measurement. On this page, the range runs from 5 to 483 mm, so the decision is mainly about choosing the right size band rather than forcing one universal model to fit every penetration.
Can your pipe flashings be used with different pipe materials?
Yes. Our pipe flashings can be used with steel, copper and PVC pipes. That makes the family useful across many common roof penetration situations without changing the basic product logic.
Can the base be shaped to different sheet metal profiles?
Yes. The flashing uses an aluminium base that can be shaped to suit different sheet metal profiles. That matters because a good seal depends not only on pipe size, but also on how well the base follows the substrate.
Are these pipe flashings suitable for exposed outdoor conditions?
They are designed for exposed use with a weather-resistant EPDM rubber body that is water- and dustproof. The range is stated to withstand temperatures from -65°C to +100°C, which makes it suitable for demanding outdoor conditions.
What installation steps matter most for a tight result?
The important points are to make the hole with minimal tolerance, trim the top carefully if needed, place silicone under the base, moisten the rubber with water, press the base to the substrate contours, and then fasten the flashing in the stated sequence before sealing around the base.