2015 O Levels Pure Chemistry Study Notes (Set A) 2017 Commonly Asked Questions (soft copy)

Perimeter Seals are sealing solutions designed to create a an airtight fire resistant barrier around the edges and perimeter of fire doors, regular doors, joints and openings. Perimeter seals prevent passage of water, fire and smoke through gaps.

Perimeter Seals can typically last 10 -15 years with annual inspections and maintenance.

Majority of Acoustic seals can last from 10 to 15 years of optimal performance depending on the type of acoustic seal and conditions.

Acoustic seals are designed to reduce sound transmission through gaps, joints and openings between doors, windows and walls throughout the building. They eliminate sound waves which can easily pass through gaps, which enhances the soundproofing system for doors, windows and walls.

Acoustic seals can be used in commercial buildings, residential buildings public buildings. Typically they are installed around doors, windows and brushes.

Acoustic seals can provide noise reduction of up 20db improvements in sound reduction for doors, windows and walls.