WOLFIN membranes are single-ply, entirely homogeneous,high polymer roofing and waterproofing membranes that meet the requirements of DIN EN 13956 and DIN EN 13967. WOLFIN membranes are free of monomeric plas ticizers. The content of high polymer materials is above 94 %.WOLFIN membranes neither contain fillers nor substances that may be washed out after prolonged exposure to water. Thanks to their unique formulation, WOLFIN membranes can be manufactured without additional flameproofing agents. Recent tests carried out on a 25-year-old WOLFIN membrane, laid under ballast, showed no change in the membrane's physical values from those of the original product. The membrane has therefore proved to be well resistant to ageing. The results are available upon request.
Whether for refurbishment or for new construction:WOLFIN membranes have been successfully installed for more than 50 years on all continents of the globe, covering millions of square metres of flat roofs and building surfaces. No matter whether loosely laid, mechanically secured, bonded, laid under roof vegetation or other ballast mate rials.
In a long-term trial, WOLFIN membranes were tested for their resistance to plant root penetration following the rigorous test criteria of the FLL method. They successfully passed the test. WOLFIN can look back on more than 50 years of practical experience in the waterproofing of buildings and protection against plant roots.
For several decades now, WOLFIN membranes have been manufactured with the same formulation and finish. Thanks to a sophisticated formulation and consistently high manufacturing quality which is also monitored by external institutes, there is no need for separate summer and winter formulations. WOLFIN membranes are flexible and easy to install – all year round.
WOLFIN membranes are weldable even after prolonged weather exposure. Caused by UV radiation, the surfaces of thermoplastic and rubber membranes tend to oxidize. This oxidized layer must be removed before homogeneous welding is possible. WOLFIN membranes feature lifelong weldability, whether by solvent or hot air. Any existing oxide layer can be removed with minimal effort.
WOLFIN membranes have an extremely high resistance to chemicals. They are, for example, resistant to kerosene, oils and fats, sulphuric acid and lactic acid (85 % concentration) which is essential when waterproofing kitchens. WOLFIN IB has been approved for waterproofing collection and retention basins that are used for storing waterpolluting liquids in line with the building and test principles of the DIBt Berlin (German Institute for Construction Tech - nology, Z-59.21-8). (A list of chemicals approved in com - pliance with the German Water Resources Act WHG is available upon request.)
Microbes and bacteria form in dirt deposits, gravel and puddles. But
WOLFIN is resistant to them. WOLFIN membranes therefore need no
special anti-microbial finish. Whether uncovered, ballasted or laid on
a green roof: there is only one WOLFIN formulation.
Red algae colonies form in puddles on the roof. But WOLFIN is
resistant to red algae. Also humic acid and loamy soil are no problem
for quality membranes made by WOLFIN.
Of all the thermoplastic roofing and waterproofing membranes available in the market, WOLFIN offers the highest water vapour diffusion permeability. It is the only membrane with a μ-value of just 13,000 which corresponds to an sd-value of 19 m (membrane thickness of 1.5 mm). Thanks to the unique formulation and the black colour of WOLFIN membranes, the roof layers rapidly heat up under he influence of solar radiation (max. 70 °C). This causes a high vapour pressure that gradually dries out the trapped moisture. The effectiveness of this physical process has been confirmed by recent scientific test results provided by the Fraunhofer Institute, Holzkirchen/Germany.
The dry-out process of a multi-layer roof
Of all the thermoplastic roofing and waterproofing membranes available in the market, WOLFIN offers the highest water vapour diffusion permeability. It is the only membrane with a μ-value of just 13,000 which corresponds to an sd-value of 19 m (membrane thickness of 1.5 mm). Thanks to the unique formulation and the black colour of WOLFIN membranes, the roof layers rapidly heat up under the influence of solar radiation (max. 70 °C). This causes a high vapour pressure that gradually dries out the trapped moisture. The effectiveness of this physical process has been confirmed by recent scientific test results provided by the Fraunhofer Institute, Holzkirchen/Germany.
The test results clearly show: The moisture trapped in the roof layers completely dries out after just a couple of years when renovating the roof with WOLFIN.
Preserve the old roof layers, perforate the existing waterproofing membrane (5 holes/m², diameter approx. 25 mm), if necessary install additional insulation according to EnEV and waterproof the roof with WOLFIN (colour: black).
Status: Moisture has penetrated the old roof insulation and there are wet spots in the roof valleys.
The black colour of the WOLFIN membrane causes the roof layers to gradually heat up. The moisture begins to spread through the single layers.
Status: Spread of moisture in the roof layers and the start of the drying process.
The moisture spreads evenly through the insulation layers – both horizontally and vertically. The entire surface of the WOLFIN membrane is utilized for the dry-out effect, thus speeding up the process.
Status: The degree of moisture penetration is drastically reduced.
The roof dries out completely. In the test carried out by the Fraunhofer Institute the drying process took approximately 2 years.
Status: The moisture content tends towards zero. The long service life of the WOLFIN membrane ensures durable protection of the roof.