Sarnafil TG 66-20 Membrane 2.0 mm Thick

Sarnafil TG 66-20 is a single-ply roofing waterproofing membrane manufactured from high-quality flexible polyolefin (FPO). It features a multi-layer structure reinforced with non-woven glass fiber to enhance dimensional stability and reduce deformation caused by external environmental conditions. Manufactured in accordance with EN 13956, it is suitable for roofing waterproofing applications requiring durability and a long service life.

The membrane can be effectively joined using hot-air welding, providing strong and continuous seams. It also offers excellent resistance to UV radiation, severe weather conditions, and temperature fluctuations, making it suitable for use in various climates worldwide.

Sarnafil TG 66-20 is specially designed for loose-laid and ballasted roofing systems, such as gravel-covered roofs, concrete-paved roofs, and green roofs. It can also be used for detailing around joints, wall edges, skylights, and other roofing components requiring precise waterproofing.

Its manufacturing process helps minimize internal stresses within the membrane, while its multi-layer structure provides excellent resistance to delamination. This reduces the risk of water absorption and separation of material layers while ensuring high dimensional stability, making it suitable for roofing applications requiring long-term stability.

Applications of Sarnafil TG 66-20

Sarnafil TG 66-20 is suitable for use as a waterproofing membrane beneath ballast materials such as gravel, concrete paving slabs, green roof systems, or usable rooftop areas. It can be applied to various roofing applications, including:

• Loose-laid roofing systems and roofs covered with paving materials

• Green roofs

• Rooftops used as multipurpose areas, such as terraces, recreational decks, or parking areas

• Inverted roofs

• Waterproofing around joints, wall edges, parapets, skylights, and various roofing details

• Used in conjunction with Sarnafil TS 77 and TG 76 systems for roofing details requiring a neat finish and long-term durability

Key Features of Sarnafil TG 66-20

• Excellent resistance to UV radiation and outdoor weather conditions, making it suitable for long-term applications

• High flexibility, even in cold weather or low-temperature conditions

• Reinforced with non-woven glass fiber to enhance dimensional stability

• Good resistance to impact and abrasion

• Easy hot-air welding with strong welded seams

• Reduces the risk of material delamination and water absorption

• Compatible with existing bituminous or asphalt surfaces

• Recyclable material

• Suitable for roofing applications requiring high-performance waterproofing systems with easy maintenance

Substrate Preparation

The substrate must be:

• Smooth

• Even

• Free from sharp edges or burrs

• Clean

• Dry

• Free from grease and dust

• The supporting materials must be compatible with the membrane and resistant to solvents

Metal sheets should be degreased using Sikaplan® Cleaner before applying the adhesive. sarnafil-tg-66-18ap

Installation Method

The membrane can be installed using two main methods.

1. Loose-laid + Ballast

• Install the membrane using the loose-laid method

• Use ballast materials such as green roof systems, screeds, or pavers according to the wind load design requirements

2. Fully Adhered

• Bond the membrane using Sarnacol® 2152

• The underside of the membrane must be activated according to the specified procedure to ensure proper adhesion to the adhesive. sarnafil-tg-66-18ap

Junctions and Flashing

At roof junctions and flashing areas, the membrane can be bonded to substrates such as:

• Reinforced concrete

• Rendered surfaces

• Timber boards

• Metal sheets

Using Sarnacol® T 660.