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TECHNONICOL No. 21 (Technomast) roofing and waterproofing mastic — bitumen-rubber
TECHNONICOL

TECHNONICOL No. 21 (Technomast) roofing and waterproofing mastic — bitumen-rubber

Mastics and liquid membranes

Technomast is a ready-to-use cold mastic of petroleum bitumen modified with synthetic rubber, with mineral fillers and an organic solvent. It is used to build and repair mastic roofs — with glass fabric, roll materials or without them — and to protect foundations, basements, pipes and piles against water and corrosion. The coating elongates by at least 500%, remains flexible at −35 °C, and withstands heating up to +110 °C and a water pressure of 0.1 MPa for 24 h. The mastic can be applied at −20…+40 °C; packaging — 10 kg euro pail.

Specifications

ManufacturerTECHNONICOL — OOO “Zavod Technoflex”, Uchaly, Voskresensk
Typemastics and liquid membranes
Useroofs, foundations and basements
Baseready-to-use homogeneous mass: petroleum bitumen modified with synthetic rubber, process additives, mineral fillers, organic solvent (cold-applied)
Packaging10 kg metal pails
Application methodstir before use; substrate dry, free of dust, oil and ice; priming with TECHNONICOL primers No. 08 and No. 01; apply coat by coat by brush, spatula or by pouring and spreading with squeegees, coat not more than 2 mm, each subsequent coat after the previous one has dried and across it; apply to cooling substrates, pierce blisters and press them down
Application temperaturefrom −20 to +40 °C; at temperatures below +5 °C keep the mastic at room temperature for at least a day; all climatic regions according to SP 131.13330.2020
Curingdrying of one coat 12–24 h (depending on thickness and temperature); final development of properties — 7 days
Key propertiesbond strength to concrete at least 0.6 MPa, to metal at least 0.9 MPa, roll material to roll material at least 0.3 MPa, roll material to concrete at least 0.4 MPa; shear strength of the adhesive bond at least 4.0 kN/m; nominal tensile strength at least 1 MPa; elongation at least 500% (GOST 26589-94); non-volatile content by mass at least 50% (GOST 31939-2022); heat resistance not lower than +110 °C; flexibility temperature on a bar R = 5 mm not higher than −35 °C; watertightness at a pressure of at least 0.1 MPa for 24 h — passes (GOST 26589-94); combustibility group G4 (GOST 30244-94), ignitability V3 (GOST 30402-96), flame spread RP4 (GOST R 51032-97)
Layer thicknesscoat not more than 2 mm; anti-capillary and anti-corrosion treatment — finished coat 0.6 mm
Consumptionmastic roof 3.8–5.7 kg/m²; waterproofing 2.5–3.5 kg/m²; anti-capillary and anti-corrosion treatment (0.6 mm coat) at least 1.2 kg/m²
Shelf life18 months from the date of manufacture; in a dry, ventilated room protected from the sun, with supply and exhaust ventilation, at −20…+30 °C, pallets in a single tier, following the rules for highly flammable materials
StandardsTU 5775-018-17925162-2004; GOST 30693-2000

Data from the manufacturer’s technical data sheet. The coating system, number of coats and quantity are selected for your project on request.

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