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The most common application is the injection of polyurethane in the air gap of façades: with only a few holes, polyurethane foam is injected into the air gap and it expands reaching every corner, so that the wall is perfectly insulated and repaired.
- Applications of polyurethane foam: injection and spray - Synthesia
Polyurethane foam is a very effective thermal insulation, so...
- Applications of polyurethane foam: injection and spray - Synthesia
Polyurethane foam is an injectable polyol and isocyanate resin sealant, insulation, grout which expands upon application providing void fill, structural support, and re-leveling properties.
Polyurethane flexible injection resin for water stopping and waterproofing. Sika® Injection-101 AP is a 2-part, polyurethane, low viscosity, fast foaming, water-reactive injection resin. It cures to form a dense flexible foam. Requires direct contact with water for foaming reaction to commence. Can be injected as a single component system.
How to inject polyurethane correctly. The application of injected polyurethane is mainly used in the filling of air gaps in façades or partition walls, mainly in cases of renovation works, in order to obtain optimal thermoacoustic insulation.
Polyurethane foam is a very effective thermal insulation, so it is essential to improve the energy efficiency of buildings. Its application in situ by spray or injection allows very versatile solutions, which adapt to all types of needs and construction elements, whether in new construction or rehabilitation.
Injection is a common method used to repair and waterproof concrete structures. It is also used to consolidate and stabilize ground before future structures are erected (pre-excavation grouting) and to stop water and consolidate ground in existing underground structures (post-injection).
PU injection foam requires water to react. As it reacts, it will foam and expand to stop the water leaks within a short period. PU Injection foam are normally injected into cracks that are constantly wet with flowing water. PU injection resin do not foam when in direct contact with water (non-reactive to water).
