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Some of the Benefits of Flexim Roof Mortar \ Putty

10 individually wrapped strips of Flexim Roof Mortar
Flexim Roof Mortar used on a ridge
Ridge tile pressed into Flexim Roof Mortar for installation
Flexim Roof Mortar trimmed for the perfect fit

Saves Time and Costs
Tests have shown that Flexim Roof Mortar 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.

Flexim Roof Mortar 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.


Works Great At Almost Any Temperature
Flexim Roof Mortar can be installed from +140°F (+60°C) down to -13°F (-25°C)

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.

For more answers check out our FAQ or give us a call.

Each box will do 15' to 20' of hip or ridge, both sides
(30' to 40' one side)

Available Colors

Flexim ships directly to you from a pick & pack warehouse, via UPS anywhere in the United States or Canada. (Accept Florida)

Terra Cotta

Terra Cotta Flexim Roof Mortar Putty

Rust/Light Brown

Rust Light Brown Flexim Roof Mortar Putty

Restock May 30

Dark Brown

Restock May 30

Dark Brown Flexim Roof Mortar Putty


Gray Flexim Roof Mortar Putty


Black Flexim Roof Mortar Putty


Green Flexim Roof Mortar Putty
Flexim Roof Mortar Putty - Video

Ridge Installation

Flexim Roof Mortar Putty - Video

Hip Installation

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


Flexim Roof Mortar Putty - Video

Installation Instructions

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

What else does Northern Roof Tiles do?

Reclaimed Roofs Tiles \ Architectural Salvage

Need tiles for a repair, addition or an entire roof? We have access to millions of tiles located in the US ready to go. Plus if we don't have it we can find it

How to measure roof tile
Reclaimed Salvage yard including fittings
Drone shot of Reclaimed Clay Tile Yard

New Clay Roof Tile

Northern Roof Tiles started out importing the finest clay roof tiles from Europe and it is still our primary love.

We cover all styles from English Country, French Farm House, Cotswold Stone, Mediterranean Mission Pan & Cover barrel tile, traditional Spanish 'S', modern flat interlocking and many, many more.

Check out our extensive line up on our main web-page

English Shingle Tile roof over doorway.
Haverford PA English shingle clay tile project
French Country style clay roofs tiles
Pan & Cover Mission style clay tile roof
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