The problem of older buildings is often the lack of insulation or insufficient roof insulation. This can cause leakage as well as heat leakage from the inside. Insulation from modern materials can be done both in old houses and in newly built ones. It is placed on a concrete plane above the last floor. It is important to ensure its tight assembly and to connect it with the wall insulation so as to avoid the formation of thermal bridges.
What are the advantages of PIR boards?
PIR insulation boards are a modern material used for thermal insulation of floors, walls, flat and sloping roofs. They are characterized by low density and low thickness. They are durable, light, easy to install and resistant to biological factors such as fungi and insects. Their water absorption does not exceed 2%. Compared to other materials, such as polystyrene, they are harder and more resistant to fire. They have a very low thermal conductivity coefficient, therefore they are often used in energy-saving construction. In our offer you can find 5 termPIR and IZOPROOF products designed especially for flat roofs. All PIR boards are made of a thermal insulation core made of PIR foam. protected on both sides with a gas-tight lining made of aluminum, paper and polyethylene or a gas-permeable lining made of glass veil (optionally soaked with bitumen).
How to install roof insulation?
The assembly of PIR boards does not require complicated devices. However, it is necessary to clean the substrate from dust in advance and prepare the vapor barrier surface. It will prevent the penetration of moisture from the side of the room towards the warming. PIR boards are assembled in one or two layers using the staggered method. In the case of laying one layer, boards with a TAG (tongue and groove) or LAP (step cutter) cutter are recommended, and in the case of two layers - a FIT cutter (flat). Possible gaps are filled with mounting foam. On the substrate made of trapezoidal sheet, the longer side of the board should be put perpendicularly to the sheet corrugations.
PIR boards are fastened with fasteners in the form of steel washers with an appropriate screw. The first layer usually uses 1 fastener per board. On the second layer – depending on the roof zone (middle – 6 fasteners, edge – 12 fasteners). The designer can decide on the additional number of connectors on the basis of overload calculations. Such solutions are used in unusual conditions, e. g. in a wind zone. If you have any questions or concerns, please contact our technical consultancy.