Insulating roofs with polyurethane systems is an excellent option to improve the energy efficiency of buildings. Synthesia Technology has a specific polyurethane system for this purpose, which also stabilizes slate or tile inclined roof elements that have suffered corrosion in their anchors. In addition, these are no longer necessary thanks to the powerful adhesive action of the polyurethane itself.
Irrespective of the type of roof, the degree of impermeability must be unique and independent of climatic factors. Minimum insulation conditions are also established for optimum insulation.
Polyurethane roof: sprayed, sheets or sandwich panels
When installing an insulation system on a roof, an analysis must be carried out beforehand. The type (flat or inclined, metal or wood, with or without previous insulation, etc.) will determine the insulation system to be applied. In addition, before installation, attention must be paid to the singular points. These are expansion joints, gutters, drains, joints with vertical walls, anchoring of elements, corners, skylights, etc.
Sprayed polyurethane is an insulation solution for roofs with a great adherence, which is one of the reasons as to why it is efficient for new construction as well as rehabilitations. In fact, it can even be applied directly to old materials. Thus, as its elimination is not necessary, the work generates less waste. In addition, the spray of polyurethane means little added weight for the roof in exchange for a great robustness, even resisting strong winds. Gravel or vegetation can be added to the sprayed polyurethane roof, allowing transit for maintenance tasks.
Polyurethane planks are used for wooden structures, since their installation does not require the inspection of pillars or beams. In addition, they provide stability, eliminating the risk of sinking. Installation is very simple and does not require the use of safety equipment.
Polyurethane sandwich panels are an excellent choice for waterproofing while improving insulation. They offer a wide variety of finishes and are suitable for all types of roofs. Installation is quick, as they are light and easy to handle. The sandwich panels also provide effective insulation - given their low thermal conductivity - with minimum thickness, thus optimising the use of space.
Advantages of polyurethane roof insulation
Polyurethane insulation is highly recommended for metal roofs, as they are highly exposed to corrosion, the effects of condensation and leaks, as well as high expansion and contraction that can generate cracks and loosen fixings.
Generally speaking, the benefit of polyurethane coatings is twofold. On the one hand, this material provides mechanical reinforcement by replacing old anchors and, on the other hand, it is an excellent insulating solution.
Polyurethane systems insulate building envelopes airtight, up to 50% more efficiently than other materials, resulting in energy savings. They thus achieve effective and continuous thermal and acoustic insulation, without the risk of infiltration and resistant to stagnant water.