Penosil Standard Foam 500ml Straw Applicator PU Construction Foam Fire Class B3

Product Overview

Penosil Standard Foam 500ml is a polyurethane construction foam used for sealing, filling, and insulating gaps during renovation and installation works. With a straw applicator for manual dispensing, it is preferred by professional installers and contractors for its strong adhesion to most building materials. Certified to fire class B3, it is suitable for use where fire performance is required but direct UV exposure should be avoided.

The notably improved narrow applicator in this SKU offers greater precision, allowing controlled foam placement and minimizing excess material during application. This feature reduces waste and clean-up effort, making it efficient for sub-contractors handling complex penetrations or pipe passages. Penosil Standard Foam is particularly suited for bulk procurement in general construction and MEP installation projects.

Key Features

• Improved straw applicator ? delivers precise foam placement for reduced waste and easier application


• Thermal insulation ? conductivity of 0.036 W/m*K helps maintain energy efficiency


• Acoustic insulation ? effectively dampens noise from gaps and penetrations


• Fast skin formation ? surface dries in 12-16 minutes, allowing rapid progress


• Full cure time ? up to 18 hours at 23°C, 24 hours at 5°C for deep gaps


• Fire class B3 ? suitable for applications with moderate fire safety requirements


• Secondary expansion ? limited to 2% for dimensional stability after curing

Technical Specifications

• Volume: 500 ml


• Density: 25-30 kg/m3


• Skin formation time: 12-16 min


• Cutting time (30 mm bead): 30-40 min


• Full cure (23°C): up to 18 h


• Full cure (5°C): up to 24 h


• Tensile strength: 11 N/cm2


• Compressive strength at 10% deformation (DIN 53421): 3 N/cm2


• Thermal conductivity: 0.036 W/m*K


• Thermal resistance (long): -50°C to +90°C


• Thermal resistance (short): -65°C to +110°C


• Fire class: B3


• Secondary expansion: up to 2%


• Color: light yellow


• Storage temperature: +5°C to +30°C

Applications

Used for filling, sealing, and insulating building joints, pipe penetrations, wall gaps, and installation voids in commercial, residential, and infrastructure construction. Ideal for MEP fit-out, general renovation, and bulk installation tasks in high-volume building projects. Not compatible with teflon, polyethylene, or silicone surfaces. Requires UV protection after curing.

Packaging & Shipping

Standard export packaging. Each 500ml can includes the straw applicator for manual dispensing. Bulk orders available in cartons or palletized loads for project procurement.