Why More Roofers Are Switching to Flexim Roof Mortar

Fast, clean, and built to last — the smarter way to secure your roof.

What Is Flexim Roof Mortar?

Flexim Roof Mortar is a ready-to-use, flexible roofing compound designed to replace traditional sand-and-cement mortar for fixing ridges, hips, and roof tiles.
Made from natural linseed oil, Flexim arrives in convenient pre-formed strips that adhere instantly to tiles — no mixing, no mess, and no waiting for the weather to cooperate.

It’s been trusted in Europe for decades and is now widely available in North America through Northern Roof Tiles.

The Problem with Traditional Mortar

Conventional roof mortar looks solid when first installed, but over time it becomes brittle and cracks. Temperature changes, vibration, and wind uplift gradually weaken the bond, allowing water to enter and tiles to loosen.

Repairing those joints can be time-consuming and costly — especially when you’re mixing small batches of cement on-site and hoping for dry conditions.

Flexim eliminates all of that hassle.

Why Flexim Is Different

Here’s why professional roofers and contractors are switching to Flexim:

1. Flexible and Weatherproof

Flexim never hardens like cement. Its natural elasticity means it moves with the roof, expanding and contracting with temperature changes.
That flexibility provides maximum protection against wind-driven rain and snow, keeping ridges and hips sealed year-round.

2. Ready-to-Use Convenience

No water, mixing, or curing time — just open the box, cut a strip, and press it into place.
It adheres directly to most clay, concrete, and slate tiles, saving hours on every job. You can install it in any weather, even below freezing.

3. Sustainable and Non-Toxic

Flexim is made from natural linseed oil and contains no harmful solvents.
Its eco-friendly formulation makes it ideal for green building projects, reclaimed roof tile repairs, and heritage restorations where longevity and environmental responsibility matter.

4. Lightweight and Clean

Each box of Flexim contains ten pre-formed strips (enough for about 20 linear feet of ridge). The lightweight packaging means no heavy mortar bags, no dust, and no on-site waste.

5. Proven European Performance

With millions of roofs sealed across Europe, Flexim has been tested in extreme weather conditions — from the North Sea’s salty winds to alpine snow loads — and continues to perform year after year.

Ideal Applications

Flexim Roof Mortar is perfect for:

• Ridge and hip tile installation

• Tile replacements and repairs

• Sealing around vents, skylights, and solar panels

• Restoration projects using reclaimed clay roof tiles

It’s compatible with most major roofing systems and available in several colors to match existing roof materials.

Installation in Three Simple Steps

1. Open the Box — no mixing, no tools needed.

2. Press Flexim into Place along the ridge or hip.

3. Seat the Tiles firmly and smooth the edges for a clean, professional finish.

That’s it — no drying time and no return visit required.

Why Builders and Homeowners Love It

• Contractors save time and labor costs.

• Homeowners get long-term weather protection and a cleaner roofline.

• Architects and restorers appreciate its natural composition and reversible installation method.
  
  Conclusion

  Flexim Roof Mortar makes roof repairs faster, cleaner, and more sustainable.
  Its natural linseed-oil base gives you a durable, flexible, and weatherproof seal that won’t crack or crumble like traditional mortar. Whether you’re repairing a few ridge tiles or restoring a heritage property, Flexim delivers lasting results — with zero mixing and zero mess.

  If you’re ready to upgrade your roofing projects, discover Flexim Roof Mortar today — available across North America from Northern Roof Tiles