Roof insulation in a modern and scientific way using nano-based products that are replaced with tar paper and bitumen (and have more durability and longer service life) varies depending on the structure type and the construction or restoration stage.
Types of roof insulation
- New Buildings, During the Pre-Grading Phase
In the buildings where roof grading has not yet been done, grade the roof with NSG-N50 (the reinforcement, sealant, lubricant, and antifreeze product). Then make the plaster mortar with NSG-B70 (the reinforcement and sealant product which is suitable for the foundation of the main insulation layer). In the end, apply the main insulation layer with NSG-Z90 (the waterproofing product which is applicable on all surfaces in a lightweight very low thickness) based on the following instructions:
- Mix 1 unit of NSG-N50 and 5 units of water with the concrete liquid to produce the concrete.
- Mix 1 unit of NSG-B70 with 3 units of water to produce the mortar liquid.
- This part is performed in three steps:
- Mix NSG-Z90 with water in a 1:1 ratio and coat the mixture 2 times (after the drying time of the first coat, roughly 30 minutes) on all surfaces.
- Coat all the surfaces by the grout that is produced by stone powder and cement and then apply PLC mesh on this coat. Do this step one more time (4 alternating layers of grout and PLC mesh). The reason for using PLC mesh is to prevent structural stresses as well as to prevent creating cracks that may be caused by conventional structural subsidence.
- Finally, like the first step, Mix NSG-Z90 with water in a 1:1 ratio and coat the mixture 2 times (after the drying time of the first coat, roughly 30 minutes) on all surfaces. In this step, if the final surface of the roof is to be painted, mix 3 units of the desired acrylic paint with 1 unit of NSG-Z90 and do this step with this mixture.
- Tar-papered, bituminous roofs that leak
In such cases, remove tar-paper, bitumen and any other petroleum derivatives from the roof surface, and then coat the surface with a thin layer of cement-sand mortar. In the end, apply NSG-Z90 3 times.
On the roofs where the surfaces are in mosaic tile, first rake out the pointing with an angle grinder, then inject the NSG-N50 grout into the cracks in order to fill all the pores that exist under the mosaic tiles and make the surface resistant (To produce the NSG-N50 grout, mix 2 units of stone powder and 1 unit of cement). Then restore the pointing and apply NSG-N50 with brush 3 times in order to achieve the %100 insulation.
Note: remove all loose mosaic tiles, and then coat the surface with a thin layer of cement-sand mortar. In the end, perform step 3 two times and mount the mosaic tiles on the surface.
All of these steps can also be performed for the insulation and restoration of Roof Gardens.
In all these steps, the composition of the materials and their amount of consumption (i.e. cement content, and type of the stone powder) can be changed depending on the structure and the products except Non-NSG products.
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