High speed spiral door boosts speed & u-values
June 1st 2011 Redesign described as a technical leap
forward, using CFC PU foam to improve
strength and insulation
Hörmann's high speed spiral door was originally
developed to replace the traditional two door solution
of a high speed curtain door, for frequent daytime
access, with a sectional outer door for night-time security.
The new door is said to offer excellent insulation and high
speed operation, of up to 2.5 metres per second.
It has been re-designed in what the manufacturer describes
as a technical leap forward since it uses CFC PU foam to give
strength while also providing both thermal and acoustic
insulation. The 42mm thick insulation is the same as that used
in the popular SPU sectional door,where a single panel has a
thermal U value of 0.5W/m2K. For a complete spiral door, with
a surface area of 25 sq m an impressive U value of only
1.95W/m2K is achieved.
Unlike similar doors the double skinned panels are linked by
hinges which add greater stability leading to more reliable
operation and increased service life. Double glazed panels with
Hörmann's scratch resistant Duratec are also available for
vision panels and natural lighting.
The new design is also sympathetic to damage repair with
Hörmann estimating a damaged section can be replaced, by an
experienced technician, within
30 minutes. More articles from Hormann UK Ltd: | 
