How to apply roof membrane – step by step

Luna Roof® Tagmembran

Application Instructions – Step by Step

Luna Roof® is a professional silicone-based roofing membrane developed for the renovation and protection of existing roofs. The product forms a flexible, waterproof and UV-resistant membrane that can significantly extend the life of the roof.

Suitable for:

✔ Roofing sheets
✔ Eternit roof
✔ Steel roofs
✔ Concrete surfaces
✔ Existing roof membranes


1. Surface preparation

A good result starts with proper preparation.

The roof surface must be stable, clean, dry and free of loose materials before application.

Recommended procedure

  • Remove loose dirt, moss and algae with a stiff broom or brush.
  • Clean with a soft broom or brush.
  • In case of heavy soiling, high-pressure cleaning is recommended.
  • Let the surface dry completely before treatment.

Note: Loose roofing felt layers, damaged areas or defective flashings should be repaired before application.


2. Tools and equipment

For optimal application, the following is recommended:

✔ High quality paint roller
✔ Brush for details and flashing
✔ Masking tape for masking
✔ Protective gloves
✔ Work clothes or painter's uniform

For larger projects, Luna Roof® can also be applied with suitable airless spray equipment.


3. Application of Luna Roof® Roof Membrane

Open the bucket and stir the product thoroughly for a minimum of 30 seconds.

Start by applying the membrane around:

  • The chimneys
  • Skylights
  • Ventilations
  • Collections
  • Corners
  • Flashings

Then apply to the rest of the roof surface with a roller or spray.

Important: Apply extra material at joints, corners, penetrations and other critical details for maximum durability.


4. Drying time and curing

  • Surface dry after approximately 1-2 hours
  • Rainproof after a short time under normal conditions
  • Fully cured after approximately 24 hours

Drying time may vary depending on temperature, humidity and layer thickness.


5. Important conditions

Recommended working temperature: +5°C to +35°C

  • Avoid application in rainy weather.
  • Avoid frost and heavy condensation.
  • Do not apply at temperatures below +5°C.
  • Ensure dry conditions during application and curing.

Advantages of Luna Roof®

✔ 100% waterproof membrane
✔ High UV resistance
✔ Elastic and crack-bridging
✔ Beautiful and uniform finish on roofing felt and eternit
✔ Long life
✔ Suitable for renovating older roofs
✔ Easy application with roller, brush or spray
✔ Professional solution for private and business use


Video, guides and documentation

Watch the instructional video directly below, or download the documentation.

▶️ Open tutorial video in new window
📄 Download application instructions
📄 Download product data sheet
📄 Download safety data sheet (SDS)

Do you have questions?

📞 70 90 70 85
✉ kontakt@luna-roof.dk
🌐 www.luna-roof.dk
Extend the life of your roof – rather than replacing it.