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UltraTherm 045

High performance sarking boards for walls and roofs

ThermoWall 040 / 045

UltraTherm boards are tongue and grooved rigid insulation boards that are ideally suited for the thermal upgrading of existing roof constructions. They are also suitable for externally insulating timber framed or green oak framed buildings.

UltraTherm boards will protect a building envelope from wind and rain whilst still enabling moisture transfer through the construction. A factory applied hydrophobic coating also enables them to be used as a temporary wall/roof covering for up to one month.

UltraTherm boards are fully biodegradable.

Composition & Manufacture

  • Manufactured from renewable resources
  • Manufactured from by-products
  • Bitumen-free
  • CO2 zero-rated
  • Timber fuelled embodied energy
  • Actively recycled

Installation & Disposal

  • No known health risks for workforce or installers
  • Easily cut to shape with handsaw
  • Durable / Low maintenance
  • Reusable / Recyclable
  • Compostable

Performance

  • Wind and rainproof from 20 degree pitch upwards
  • Acts as temporary roof covering (max. 4 weeks)
  • Eliminates thermal cold bridging through timbers
  • Vapour permeable
  • Enhances thermal performance in Winter
  • Enhances thermal performance in Summer
  • Good acoustic performance
  • Hygroscopic (absorbs & releases moisture)
  • Vermin and fungus resistant
  • Electrically neutral
  • Non-radioactive
  • Free from toxins and allergens
  • Dimensionally stable (low thermal movement)
  • Helps regulate indoor climate
  • Low toxic fumes if burn

Applications

• Additional insulation layer for existing buildings
• Insulating sarking board for roof constructions
• Insulating sheathing board for timber-frame

Part of this web page will not print - please use the product pdf linked on this page

DESIGN CONSIDERATIONS

Limitations of use
Suitable for 20° roof pitches and above
Suitable for rafter / support centres up to 1000mm

Racking strength
UltraTherm 045 boards do not provide racking strength. Racking strength (if required) can be achieved with metal strappings or by using a suitable internal lining board. Please consult your structural engineer.

Fixing
The screws are installed towards the eaves at an angle of 67° to the roof slope.

Load (kN/²) Roof pitch [°] / Screw spacing [cm]
  20° 25° 30° 35° 40° 45° 50° 55° 60°
0.75 175 160 138 130 125 123 127 128 128
1.00 170 140 121 115 113 113 115 117 121

Associated products
• UltraTherm Primer & Tape (taping of joints)
• UltraTherm Screws

Installation notes
• Fully engage board joints (tongue and groove)
• Space between rafters can walked on with caution
• Immediately fix in place with counter battens
• Avoid cross joints
• Lay boards perpendicular to rafters
• Offset vertical joints at least one rafter width
• Butt joints must be primed and taped
• Install Boards with rising tongue
• Use minimum 40 x 80mm Counter battens
• Mechanically fix with 8 x 180mm Screws (see table above)

STORAGE & HANDLING

Storage
Store and install boards in dry conditions.
Protect edges of boards from damage.

Cutting
Cut boards using a fine-toothed hand held circular saw with integral dust extractor.

Composition

Raw materials spruce / pine chippings
Hydrating agent natural tree resin
Fire protecting agent none
Hydrophobic coating tree resin / wax emulsion

Dimensions (standard)

Board thickness 50 / 60 / 80 mm
Board size 1780 x 500 mm
Edge type tongue and groove
Coverage per board 0.84 m²
Weight per board 10.3 / 12.3 kg
Boards per pallet 40 / 34 / 26
Coverage per pallet 33.6 / 28.5 / 21.8 m²
Weight per pallet 430 kg

Technical data

Density, ρ 230 kg/m³
Thermal conductivity, λR 0.045 W/m.K
Thermal resistance, R 1.11 / 1.33 / 1.78 m².K/W
Diffusion resistance, µ 5
Bending strength, σ ≥ 1.5 N/mm²
Water absorption ≥ 1.0 kg/m²
Fire rating Class B2

Standards

• DIN 68775-1- WF-P-Wh-045-H10-B2
• Certified by Institute of German Master Roofers

Date publishedTitleFile sizeDocument type
17/05/2006
UltraTherm 045
High performance sarking boards for walls and roofs
280 KB Product sheet

To order this product, or to request pricing / quotations, please do one of the following:

- call us at 020-7232-1181
- fax us at 020-7023-3789
- email us at sales@constructionresources.com
- use our online quotation request form.

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