Polyurethane Spray Rigid Foam for Building Roofing Heat Insulation

Product Description

Product Description

The heat insulation and waterproofing issues of building roof plays a important role in the building's normal application. It is a critical choice to option a better waterproofing and heat insulation material from the variant roofing products market. STWD Urethane Co., USA developed polyurethane rigid foam that combines heat reflection, insulation and waterproofing together. Applied with direct spray method, seamless between foam layers that forms a complete waterproofing layer with roofing substrate. It perfectly avoids water penetration and resolves roof leaking problems as well as be heat insulation. This material has been widely applied in the roof heat insulation waterproofing projects in the US and be awarded with USEPA Energy Star Certificate.
                  
Characteristics         The liquid material has high fluidity and permeability after high pressure spray, it can foam and seal inside the roof interspaces which is firmly bonded with substrate and form a complete seamless insulation waterproofing barrier. The cured rigid foam has excellent dimensional stability and low temperature resistance, the adhesive strength with substrate (≥40Kpa) surpasses the tear strength itself. It will not peel or fall off even the substrate expands or contracts. The foam structure is dense, with high closed cell rate, nice penetration resistance, impact resistance, anti-extrusion, anticorrosion, anti-aging, with no fragility or crack after long-term application, the normal application service life can be above 30 years without reparation. It is low heat conductivity coefficient, high energy efficiency and Eco friendly.
            
Specifications 
Density                                           ≥50kg/m3
compressive strength                     ≥0.3Mpa
heat conductivity coefficient           ≤0.022W/m.k
Water absorption v/v                       ≤2%
Dimensional stability(70ºC, 48h)     ≤1%
Closed cell rate                               ≥ 95%
combustion performance                B2 class
                        
The heat insulation effect fully meets and better than the requirements of heating residential parts in JGJ26-89 residential building energy efficient design standard. The fire retardant performance complies with GBJ16 Building Design Fire retardant code.

Recommended procedures

No.	Performance process	Application thickness
1	Roof substrate clear up
2	STWD2506 polyurethane foam	2-5cm
3	STWD heat reflection building waterproofing coating	200-300 μm
4	Quartz sand	1-2mm

Application scope              heat reflection and insulation waterproof of building roofs