Norsound acoustic seals are designed and developed to help both specifier and end user alike comply to current building regulations such as Approved Document E and Approved Document M. Our acoustic seals can be used on a standard fire door to give decibel reductions in excess of those stipulated in both document E and building bulletin 93 (BB93).
Perimeter Seals:
Perimeter seals are an essential part to an effective acoustic door seal solution as they effectively fill the natural gap created between door leaf and frame in a doorset. This range covers both retro and rout in versions to suit almost every requirement. The seals work by filling the air gaps that create sound leaks around the head and jambs of the doorset, this also stops smoke, light, dust…etc.
Threshold Plates:
The 600 series are a range of stylish, low profile threshold plates in various widths to suit numerous applications. Threshold plates complement our acoustic seals by giving an even surface to seal against, if the threshold seal was sitting against carpet or an uneven surface it would allow sound through the crevices created.
Door Bottom Seals:
The Norsound 800 series (sometimes referred to as Threshold Seals) are designed to work in conjunction with a perimeter seal and where practical a threshold plate. With acoustics, unlike fire and smoke sealing it is essential you seal the threshold of a door as sound will make its way through any crevice available. In the range we have both mechanical and non mechanical seal solutions.