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Truss Ceiling Insulation

Our truss roof blanket insulation is designed to maximise truss roof insulation effectiveness in a variety of installation options. Precut blanket slabs are available to fit 900mm centre rafters and are supplied in 1.2m lengths.

Truss wool blankets can be used as a single layer or double layer to maximise R-Value and to reduce thermal bridging in truss roofs.

truss ceiling wool insulation in roof

Retrofit Truss Roof Insulation

Terra Lana Truss Roof Ceiling wool insulation is installed after ceiling construction in new or retrofitted truss roof spaces.

A second layer can be installed over the first layer and rafters or as a single layer over the top of the rafters (to mitigate against thermal bridging through rafters).

 

Ceiling single layer segments wool insulation illustration

Single layer

Roll blanket installed as a single layer bridged over the top of rafters to reduce heat loss through rafters.

Ceiling single layer segments wool insulation illustration

Single layer segments

Segment slabs are installed precut to width between rafters to achieve R-Value.

Double layer system

A second layer can be installed perpendicularly over the first layer and rafters to increase R-Value and reduce heat loss through the rafters.

This further enables full ceiling coverage out to the roof space edges.

 

Ceiling Double layer wool insulation illustration

Key Product Data

R-VALUE
THICKNESS
CENTRES
BALE CONTAINS
M2/BALE
CODE
TRUSS R3.6
R3.6
180mm
900mm
10 x 1.2m x 435mm
5.22 m²
36.180.435
TRUSS R4.0
R4.0
190mm
900mm
10 x 1.2m x 435mm
5.22 m²
40.190.435
TRUSS DOUBLE LAYER R5.2
R5.2 (R2.6 + R2.6)
290mm
900mm
12 x 1.2m x 435mm
3.13 m²
26.145.435
TRUSS DOUBLE LAYER R6.4
R6.4 (R3.2 + R3.2)
330mm
900mm
10 x 1.2m x 435mm
2.61 m²
32.165.435
TRUSS DOUBLE LAYER R7.2
R7.2 (R3.6 + R3.6)
360mm
900mm
10 x 1.2m x 435mm
2.61 m²
36.180.435
TRUSS DOUBLE LAYER R8.0
R8.0 (R4.0 + R4.0)
380mm
900mm
10 x 1.2m x 435mm
2.61 m²
40.190.435
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Product Data Sheets

View & download a pdf product table and data sheets for all our insulation products.

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Installation Guides

View & download the installation guide for all our insulation products.

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Specification Table

View & download the Architect specification table sheet.

Key Benefits

There are many reasons why we believe our wool insulation is the best choice—find out why

Return your offcuts

As part of our commitment to zero waste, Terra Lana insulation offcuts can be returned to our factory in Christchurch. We recycle offcuts into more insulation.

Sales & Specifications

Contact our team to find out which Terra Lana product is right for your project.