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Siniat GTEC Thermal PIR Board
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Siniat GTEC Thermal PIR Board

Siniat GTEC Thermal PIR Board - 37.5 mm

Siniat Variant:

An insulated dry lining board laminate with enhanced thermal insulation.

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+44 (0)1275 377773 www.siniat.co.uk


The board is used to provide high levels of improvement to thermal insulation in wall lining and roof applications. Consult local building regulations for use in external walls in buildings over 18 m.


GTEC Thermal PIR Boards are suitable for a wide range of conversion or refurbishment projects that require a significant upgrade in the thermal performance. An additional vapour control layer reduces the risk of condensation.

Features and benefits:

  • 12.5 mm plasterboard, bonded to polyisocyanurate foam (PIR).
  • 40% thermal improvement over GTEC Thermal EPS Board.
  • Range of thicknesses between 37.5 and 82.5 mm.
  • The board complies with BS EN 520:2004+A1:2009 type A. Laminate complies with BS EN 13950:2014. The PIR insulation complies with BS EN 13165:2012+A2:2016.
  • Fire, acoustic, thermal and duty performance dependent on the whole system. See Siniat Drywall Manual for Siniat system performances.

General information




2400 x 1200 mm


Pr_25_71_35_88 Thermal laminate gypsum plasterboardsPrimary


K10/115 Metal stud partition system

K10/125 Metal stud partition system

K10/15 Lining on timber

K10/155 Wall lining system (metal studs)

K10/165 Wall lining system (metal framing)

K10/175 Wall lining system (metal furrings)

K10/185 Wall lining system (adhesive)

K10/205 Lining on timber

K10/220 Proprietary suspended ceiling system

K10/245 Ceiling lining on timber

K10/25 Ceiling lining on timber

K10/30 Metal stud

K10/35 Wall lining system (metal framing)

K10/41 Wall lining system (metal furrings)

K10/45 Wall lining system (adhesive)

K10/50 Suspended ceiling system on metal framing

Product range

GTEC Boards

Specification data - Thermal laminate gypsum plasterboards Enhanced data

Board thickness

37.5 mm.

Edge profile


Tapered edges running down the two longer sides. Edges are adhered together.

Product Reference

Siniat GTEC Thermal PIR Board


2400 x 1200 mm.


Ivory on the face.


24.2 kg.


8.4 kg/m².

Thermal resistance (R-value)

1.20 m²K/W.

Water vapour resistance

533 MN·s/g.

Reaction to fire

Euroclass B-s1,d0.




PIR insulation: 0.022 W/m·K, plasterboard: 0.19 W/m·K.

Tensile strength - longitudinal

Flexural strength (to BS EN 520).

≥550 N.

Tensile strength - transverse

Flexural strength (to BS EN 520).

≥210 N.

Jointing/Finishing Options

The board should be jointed and finished with GTEC Jointing Systems.

Boards are suitable for gypsum finishing plasters manufactured to BS EN 13279-1:2008 and must be primed with GTEC Universal Sealer prior to being decorated.

Vapour control layer

All GTEC Thermal PIR boards are manufactured with enhanced vapour resistance.


Dabs of GTEC Universal Bonding compound.

(Two additional nailable plugs required for fire safety).

GTEC Dryliner system.

GTEC Shallow Wall Channels (MFCS).

GTEC Wall Lining Adhesive.




Siniat Plasterboard Portfolio: The Siniat range of Boards, Frames, Fixings & Finishings

Siniat Plasterboard Portfolio: The Siniat range of Boards, Frames, Fixings & Finishings

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