A gutter liner system closes leaks and restores the proper flow of water off a roof. How to install a gutter liner system involves buying a flexible sheet liner that adheres to the existing gutter. This product works with vinyl, metal, or concrete gutters. You may want gutter liners if your gutters leak, but you don’t want to replace them completely. The liner seals the little holes that have developed in the gutter. Gutter liners come in many sizes depending on your roof size and pitch.

When following the steps for how to install a gutter liner system, choose a day with moderate temperatures. You don’t want it to be freezing or excessively hot. The cold or the heat will compromise the flexibility of the gutter lining product.

How to Install a Gutter Liner System Directions

1. Clean the gutters thoroughly.
2. Scoop out debris with a trowel or sweep it clear with a broom.
3. If needed, dry off the existing gutter.
4. Consult the directions for the exact gutter lining product that you bought. In general, you begin by mixing the liquid sealing/adhesive agent.
5. Once the liquid is ready, pour and spread it on the gutter.
6. Smooth out the liquid with a roller.
7. Make sure that there are no gaps or holes in the liquid.
8. Measure the length of the gutter.
9. Cut the liner film to fit the gutter.
10. Carefully press and smooth the liner over the liquid-coated gutter.
11. Overlap seams by 2 or 3 inches.
12. Now apply a second coat of the liquid liner.
13. Pay careful attention when spreading the liquid to ensure that the surface is 100% covered.
14. Cut film over openings for the downspout.
15. Make an X-shaped cut over the opening.
16. Fold down the flaps.
17. Seal the flaps down with the liquid coating.