Dektites

This category includes Dektite flashings in black and red options, covering pipe and duct diameters from 5mm to 760mm across the full range. The products are listed by the pipe diameter range they are designed to fit, making it easier to choose the correct flashing size before ordering.

Important: This information is general. Product selection depends on pipe/duct diameter, surface type, temperature requirements and the wider installation. If you are unsure which Dektite flashing you need, speak to our team before ordering.

Dektite Roof Flashings for Ducting and Pipework

A Dektite roof flashing is a flexible flashing used to create a seal around a pipe, duct or other penetration. Dektites are commonly used with ducting and pipework where a flexible flashing is required around a roof or wall penetration.

For this category, the main selection points are:

• Pipe or duct diameter
• Temperature range
• Colour/material option
• Surface and installation requirements

If you are replacing an existing flashing or matching to existing ductwork, check the outside diameter of the pipe or duct before ordering.

Black and Red Dektite Options

The category includes both black and red Dektites with 2 temperature ranges:

• Black Dektites: temperature range -50°C to 115°C
• Red Dektites: temperature range -50°C to 200°C

The red versions are generally the higher-temperature option within this range. If the duct or pipe surface may be exposed to elevated temperatures, check the individual product information before ordering.

Dektite Sizes and Diameter Ranges

Dektites are selected by the pipe or duct diameter they need to fit. The product range includes the following diameter ranges:

• 5mm to 60mm
• 75mm to 175mm
• 108mm to 190mm
• 175mm to 330mm
• 240mm to 503mm
• 350mm to 760mm

Choosing the Right Dektite Flashing

Most our customers choose by matching the flashing size to the outside diameter of the pipe or duct. You should also check whether the standard black or higher-temperature red option is more appropriate for the application.

As usual, if you are unsure which size or temperature range you need, contact the team before ordering so we can help you identify the right one.

Frequently Asked Questions

What is a Dektite roof flashing used for?

A Dektite roof flashing is used around a pipe, duct or penetration to help seal the point where it passes through a roof or wall.

How do I know which size Dektite flashing I need?

Choose the Dektite size based on the outside diameter of the pipe or duct.

What is the temperature limit for a Dektite flashing?

The black Dektites listed on the site show a temperature range of -50°C to 115°C. The red Dektites show a temperature range of -50°C to 200°C.

Can a Dektite be used on different roof materials?

Dektites can be used across a range of roof and wall penetration setups, depending on the material, surface and installation requirements. Check the relevant product information before ordering.

Do I need sealant when using a Dektite roof flashing?

Sealant requirements depend on the installation, surface and site conditions. Check the relevant product information or speak to the team if you are unsure what is required.