...:::... ROOFMATE SL For Flat Roofs ...:::...





Roofmate* SL is the ideal thermal insulation material of the flat roofs thermal resistance roofs which is suitable for walking on or not or greenhouse type flat roofs.




- After the application of the slope cement, the drainer and water proof membrane, both water impermeability and drainage tests have to be carried out.

- The Roofmate SL boards are placed freely on the water proof membrane system. Care must be given to put the sides of the boards on top of each other, in full line and that the boards do not fly off in stormy weather conditions.

- A filter layer (felted cloth, geotextile) is laid out on the boards and materials like sand etc. Are thus prevented from flowing down the water and board joints.

- Gravel of 5 cm. Thickness (Æ16-32 mm.) is laid on the flat roofs, which is not suitable for walking on. On the flat roofs where people can walk on thin layer of gravel is laid on top of the filter layer. The boards are laid on this gravel without using mortar and the detailed work is then completed. Or, without using a filter layer and gravel the boards are placed on top of the Roofmate SL boards with the use of plastic filler blocks. Both of the details allow ease of use for maintenance purposes.

- It is possible to fix the boards on the felted cloth and on the layer of thin (Æ 4-8 mm.) gravel of 2-3 cm. Thickness and to use covers like mosaic or alum. However, it is preferred that the cover layer allows the flow of vapor.

- For greenhouse roofs a repeated filter layer and vegetation earth is laid on top of the gravel layer.

- The drainers to be used must be set to draw any water from all layers and their numbers and capacity must be able to drain water at a fast speed.


1) Floor cement
2) Slope cement
3) Water proofing membrane
4) Roofmate * SL thermal insulation board
5) Separator layer (felted cloth, geotextile etc.)
6) Gravel (Æ 16-32 mm., min. 5 cm.)

1) Floor cement
2) Slope cement
3) Water proofing membrane
4) Roofmate * SL thermal insulation board
5) Separator layer (felted cloth, geotextile etc.)
6) Gravel (Æ 4-7 mm., min. 2 cm.)
7) Mortar
8) Board covering



At the traditional application of flat roofing systems the thermal insulation material is protected from water by using water insulation at top and bottom barriers. However, in this situation the water proof membrane are quickly worn out due to the differences in temperatures and the effects of mechanical influences, thus loosing its thermal insulation specifics and requires very expensive maintenance and renewal work. In addition, it requires very high quality materials and workmanship and it is not compatible with the physical specifications of the building itself.

- For the inverted roofing system the water proofing membrane are protected from effects mentioned above with the help of Roofmate SL boards. Also, it doesn't require use of vapor barriers and protection cement, with less cost, its application is simple and fast, can be applied under every weather condition.

- It can be uninstalled easily to check on the status of water proof membrane; after maintenance work is carried out it can be reinstalled without any loss of material and quality. Hence, costs related to maintenance and repair is kept at lowest levels.

- The Roofmate SL boards have a minimum pressure resistance of 30 tons/m2 and stretch resistance of 2 %.

- The boards are snow and frost proof, is highly resistant to frost-thaw circle.



MATERIALS FOR THERMAL RESISTANCE (TS 11989 compatible TSE standards). For the application of terrace roofing systems the cap less porous polystyrene - extruded foam XPS boards used must definitely have armored (binded) surfaces (TSE 825 standards, article number of attachment number 5 of the official gazette numbered and dated 23725 and June 14, 1999). In the case of surfaces being curse the use of the boards on the reversed roofing systems is not appropriate regarding the values of thermal conductivity (lambda), water absorption, frost thawing.

RATE OF THERMAL CONDUCTIVITY (LAMDA). It must not be larger than 0.027 W/m.K. After aging at 10 C for 90 days.

DENSITY. Must not be at lower than 32 kg/m3 density. Although under TS 825, article number of attachment number 5 the lower limit of density is given as 30 kg/m3 for the boards with armored (binding) surfaces we propose values of 32 kg/m3 and higher to be used.

PRESSURE RESISTANCE. Must not be lower than 300 kPa (TSE 11989, class C3).

STRECH RESISTANCE. It must not be lower than 110 kPa. (This value can be defined as the load at its maximum, which the material can carry for 50 years on a continuous basis under a deformation of up to 2 %. Also, as the load for statistical calculations 110 kPa should be taken as basis instead of 300 kPa).

WATER ABSORBTION. The water absorption rate for prolonged periods using full dipping method must not exceed 0.2 % in volume.

WATER ABSORBTION WITH DIFFUSION OVER LONG PERIODS. The rate of water absorption with diffusion over long periods must not exceed 1 % in volume.

FROST THAW. The rate of water absorption using freeze thaw method must not exceed 0.2 % in volume. Also, the reduction in pressure resistance as the result of freeze thaw test must not exceed 2 % (the rate of 10 % as the standard is the upper limit).

WATER VAPOUR DIFFUSION RESISTANCE. It must be between 100 and 200.

a) Change of dimensions in the length and the width must be zero at 60 C and 90 % relative humidity.
b) Change in dimensions must not exceed 2 % under 20-kPa stresses and at a temperature of 80 C.
c) Must not exceed 2 % under 40-kPa stresses and at a temperature of 70 C.

RESISTANCE TO FIRE. Must pass the B2 test first, then must be proven that it has passed B1 class by applying chimney furnace tests and that it has not been dripping. Besides the documents obtained from TSE there must also be certificates granted by the test institutes in Germany.

CAPILARITY. Must be zero.

SPECIFICATIONS OF THE SURFACE. Must be armored (binding).


SIDE PROFILES. Tongue grooved side profiles would prevent the work of heat bridges.

STRETCH RESISTANCE. Must not be lower than 110 kPa at the applications on the beam rafter without roof wood. Otherwise, people would not be able to walk on it. Even at these values the thickness of the board and the gaps left between beams rafters must not exceed the values given by the manufacturers.

* Trademark of Dow Chemical Company.



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