Plasform transoms.
Transoms are available for use with fanlights and with overpanels if required. Overpanels for single or double doors can be accommodated without transoms and are manufactured with plain meeting stiles or with an applied astragal to the overpanel. Please see typical combinations and sections opposite.
Edge detailing
The Plasform range utilises a postformed edge detail which conceals hardwood lippings. Doors are fully encapsulated and maintenance free with 6mm radii postformed edges for PVC and 12mm radii for laminate. The 'softer' radiused vertical edges Plasform contribute to user-safety.
Acoustic It is possible to factory-fit recessed drop seals into the bottom of the door leaf to meet sound reduction criteria. Drop seals should be factory-fitted at the bottom of the door to close the gap with the floor when the door is closed using a mechanical system. This may be useful for smoke containment and low level acoustic control, particularly where the requirements for disabled accessibility call for an unimpeded floor surface. Where supplied and fitted by others, we must be informed early to adjust the door construction to accommodate this. Drop seals cannot be applied to doors installed in wet areas.
Air pressure balancing Factory-fit recessed drop seals can be added into the bottom of the door leaf to meet air control criteria. Air leakage test results to BS 476 Part 31.1 under various pressure differentials are available for air balancing calculations.
Ecoguard™ The newly developed wedge-shaped Ecoguard® seal is designed for application between the gaps of a doorframe and the surrounding wall during installation to improve building safety. Its compressible nature ensures a precise and dry fit can be achieved in varying gap widths without theneed for messy intumescent mastic.Ecoguard® is a fully certified product tested in accordance with BS 476 part 22 and provides an even coverage around the frame that is guaranteed to meet all relevant fire safety regulations. Fire tested to BS standards with Ecoguard® fitted on either side of the door for 30 minutes and both sides for 60 minutes. Ecoguard® also meets BS smoke performance criteria without the application of any additional sealing and meets EN standards for acoustics.
These characteristics are printed on each strip so contractors can be reassured it will satisfy building control officers without the need for further investigation – where mastic has been used they have to invasively check it has been applied to the correct depth, causing additional repair work on-site.