Bostik Professional PU91 - Polyurethane Construction and Façade Sealant
Verified by manufacturer 3 months ago
EPD
Certificate type
A professional grade polyurethane, developed for construction joints subject to high movement. Meets BS EN 15651:2017 Parts 1 and 4; façade and pedestrian walkway joints.
Application
Universal sealant for sealing construction, expansion joints, perimeter, siding joints, precast concrete joints, modular housing and prefabrication, joints in pedestrian walkways and is suitable for roofing applications.
High modulus, elastic, bubble and primer free and is suitable for interior and exterior applications.
Description
A professional grade polyurethane, developed for construction joints subject to high movement.
Features and benefits:
- Meets BS EN 15651:2017 Parts 1 and 4; façade and pedestrian walkway joints.
- Extremely elastic.
- High modulus.
- Bubble and primer free.
- Excellent slump and sag properties, it is subject to minimal shrinkage and no outgassing during cure.
- Suitable for interior and exterior use.
- Supplied in aluminium 300 mL cartridges.
- The low MDI technology is not classified as hazardous.
- CE and UKCA Marked.
Excellent for weatherproofing exterior joints subject to high movement and remains permanently elastic. It is suitable for facade and expansion joints in both horizontal and vertical orientations.
General information
Color | White Black Grey Brown |
Finish | Other |
Material | Polyurethane (PUR) |
Shape | Formless |
Uniclass | |
CAWS | E40/530 Sealant H40/785 Sealant jointing F30/76 Movement joints with sealant H51/610 Sealant joints H42/661 Sealant joints H51/610 Sealant joints H41/655 Sealant jointing proprietary system F30/610 Movement joints with sealant E40/530 Sealant H92/770 General sealants H42/661 Sealant joints |
Product range |
Specification data - Polyurethane (PUR) construction joint sealants
Standard | To BS EN 15651:2017 Parts 1 & 4. |
Third-party certification | CE and UKCA Marked. |
Material | Gel polyurethane. |
Class | BS EN 15651-1: F-EXT-INT-CC 25HM, |
Colour | White (30623108).Black (30623103).Grey (30623104).Brown (30623143). |
Form | Soft gunnable paste. |
Odour | Slight. |
Shelf life | Up to 15 months. Guidance for specification option: Consult manufacturer for details. |
Modulus at 100% elongation | 1.0 N/mm². |
Application rate | 125 g/minute. |
Application temperature | +5 to +40°C. |
Curing time | 2–3 mm per 24 hours. |
Shore A hardness | Approx. 30. |
Density | 1.3 g/mL. |
Elongation at break | >500%. |
Joint movement | 25%. |
Skin formation at 23°C and 50% Relative Humidity (RH) | 90 minutes. Guidance for specification option: Always tool sealant within the given skin formation time frame. |
Service temperature | -40 to + 80°C. |
Tensile strength | >1.6 N/mm². |
Sustainability data
Contains Red List materials | No |
Country of material origin | Europe |
Country of product manufacture | Europe |
Material | Polyurethane (PUR) |
Embodied carbonA1-A3 (production stage) as defined in BS EN 15804 | 4.79 kg CO₂ eq/kg |
Recyclability | For disposal instructions see separate Health and Safety Data Sheet for BOSTIK PU91 POLYURETHANE, available at www.bostik.com/uk |
Third party certifications
Third party certifications
EPD
Bostik PU91 Polyurethane EPD
Literature
Bostik Professional PU91 Polyurethane TDS
Bostik PU91 CE Declaration of Performance
Bostik PU91 UKCA Declaration of Performance
Bostik Professional Grade Sealants Brochure