Exterior Window Surround
Polure exterior window surrounds frame window openings with elegant architectural architraves, enhancing facade depth and classic charm. Molded from high-density rigid polyurethane (150-220 kg/m³), these exterior surrounds provide timber-like structural rigidity while resisting severe weather, including hail impacts without denting. Featuring a closed-cell physical matrix with water absorption under 1%, they will not absorb moisture, swell, rot, or freeze-thaw crack around window frames. Tested to withstand temperature ranges from -100 °C / +80 °C with B2 flame retardancy, every length is factory pre-coated in white acrylic primer. Installation requires clean masonry or wall substrates, continuous polyurethane assembly adhesive applied to mounting contact faces, and compulsory mechanical fixings with countersunk screws; silicone bonding is strictly prohibited. Joint seams and countersunk screw locations are filled with exterior facade filler, sanded smooth with 180-220 grit paper, and finished with UV-resistant elastic facade paint.
Frequently Asked Questions
What material is Polure exterior window surround made from?
It is molded from high-density rigid polyurethane (150-220 kg/m³), providing timber-like strength, hail resistance, and a B2 fire safety rating.
Does exterior window surround prevent moisture around window frames?
Yes. Water absorption is under 1%, preventing moisture penetration, rot, or cracking during freeze-thaw cycles down to -100°C.
How is an exterior window surround properly installed?
Apply continuous PU assembly adhesive to contact backs and secure with countersunk screws. Silicone is forbidden. Fill joints with facade putty.
What paint finish is required for outdoor window surrounds?
Exterior installations require elastic, UV-resistant facade paint applied in matching primer systems to prevent fading.