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Gable detail using Flexim Mortar Putty
Flexim Mortar Putty on Gable Rake
Flexim Roof Mortar Putty Ridge Tile
Flexim Roof Mortar available from Northern Roof Tiles

$125 per box plus shipping via UPS
1 box of Flexim will do 15' to 20' of hip or ridge
both sides or 30' to 40' one side

Flexim Roof Mortar - Ready to use. No mixing required
Flexim Roof Mortar - Instantly waterproof
Flexim Roof Mortar is perfect for pest control
Flexim Roof Mortar - Saves Time and Money
Flexim Roof Mortar - Enviromentally Friendly
Flexim Roof Mortar - Saves Time
Flexim Roof Mortar - Dries Quickly

Some of the Benefits of Flexim Roof Mortar Putty

Flexim Roof Mortar Putty is supplied in ready-to-use strips making it quick and simple to install. There’s no time-consuming mixing needed and any product not used can be saved until your next project.

Instantly Waterproof
Once installed, Flexim Roof Mortar is instantly water resistant. It is also extremely strong and will withstand all types of weather conditions and temperature extremes.

Permanently Flexible
Unlike traditional sand and cement mortar, Flexim remains flexible throughout its working life. It will not crack or delaminate, and is unaffected by the contraction / expansion of the roof or wind uplift on the tiles.

Health and safety is of paramount importance on any roofing project. The lightweight Flexim strips are easy to transport onto the roof without any heavy lifting, allowing installation to be carried out quickly and, above all, safely.

Saves Time and Costs
Tests have shown that Flexim Roof Mortar Putty is up to 5 times faster and 50% cheaper to install than traditional mortar systems. There’s no need for any mixing and no washing out needed when the job’s been completed.

Choice of Colors
The aesthetics of the roof can be perfectly matched with one of Flexim’s dedicated colors. Available in Terra Cotta, Rust Red, Gray, Light Brown, Dark Brown and Black as standard. Blue and Green are available.  Flexim Roof Mortar is perfectly suited to a range of different roof tiles including concrete, clay and slate. Flexim can also be painted once installed where required.

Environmentally Friendly
Flexim Roof Putty contains no harmful ingredients and is formulated using natural linseed oil. It is therefore ideal for use during sustainable building construction.

Pest Control
Flexim is perfect for keeping rodents, birds, bats and other wildlife out of your roof or building. Flexim can be used to quickly fill gaps in buildings or large holes effectively sealing them up. Because Flexim hardens on the outside while staying soft on the inside this means that if an persistent critters try to get in, Flexim will reseal itself. Meaning repeated repairs would not be necessary. For pest control companies a box of Flexim can be easily stored in the shop or van for quick repairs. 


The Manufacturer warrants FLEXIM roof mortar as a sealing and adhesive material. Liability under this warranty is limited to the price of the product as purchased.

The guarantee applies exclusively where FLEXIM roof mortar is applied as a sealing product for ridge or hip tiles (both ceramic and concrete) when applies in accordance with the installation instructions in the leaflet.

Available Colors

Rust / Light Brown



Terra Cotta

Green $140 per box
limited stock

Dark Brown

$125 per box plus UPS shipping
Not available for sale in Florida

A box of Flexim Roof Mortar Putty

The Contents of a box of Flexim

A strip of Flexim Roof Mortar Putty is 20"x4"x1.5"

Each Strip of Flexim is 20" x 4" x 1.5"

Black & Gray 

Check out the time lapse video to see just how much time, and therefore money, Flexim Roof Mortar can save you on your job.

Rust / Light Brown & Terra Cotta

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