UTHERM Flat Roof

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UNILIN, Insulation Division - Waregemstraat 112 - B-8792 Waregem, Belgium
T +32 (0)56 73 50 91 – F +32 (0)56 73 50 90
E-mail – Web
Trade Registry Courtrai no. 87.153 – VAT no.: BE 0405 414 072
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6. TAPERED INSULATION
With a flat roof, tapered insulation ensures than an incline is created, on which rainwater can flow off to a drainage point. This slope is achieved
by installing the insulation boards, which have an integrated incline, in a certain sequence that has been determined in advance. This method can
be used if the underlying structure of the flat roof does not have a slope.
On request, Unilin can prepare an installation plan for the tapered insulation of the flat roof, which is based on a few parameters. See the
checklist at the end of this document.
Slope incline: Inclines are possible from 0.83% to 2.08%. (PIR L)
Inclines are possible from 1.25% to 1.67%. (PIR BG)
ONE-SIDED SLOPE: Rainwater drainage to one side only
 Single-layer
The single-layer insulation boards are indicated on the installation plans with a sequential letter (here indicated as 'x').
 Multiple-layer
The legend for the installation plans of tapered insulation:
- The insulation boards are given a sequential letter by thickness.
- The multiple-layer insulation boards are indicated on the installation plan with a sequential letter, which is followed by '+ 1' (for instance
'x + 1').
- A continuous sublayer can be installed underneath the tapered boards, so as to obtain a minimal thickness.
This sublayer is called a ‘Vollflächige Unterlegung’ (full-surface support) in the following overview table.
- Boards that adjoin flatly to the tapered boards are indicated by the letter 'N' and are followed by a sequential number.
MANY-SIDED SLOPE: rainwater drainage to a single point
 V-gutter
=
X
X+1
X
Y+1
Y
KX