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ULTIMA Building System

The ULTIMA Building System offers unrivalled performance delivering exceptionally high levels of thermal performance and airtightness, practically eliminating cold bridging due to its continuous premium performance Kingspan Kooltherm insulation lining.

Delivering U-Values ranging from 0.18 to 0.1 W/m2K, ULTIMA is slimmer than any other commonly available building system. By using the premium performance Kingspan Koolthern insulation within a timber structure, ULTIMA offers a slim wall build up, giving you more internal space.

System Benefits

  • Powered by Kingspan Kooltherm phenolic premium performance insulation
  • Exceeds building regulations in both thermal and fire performance
  • U Value range 0.18 – 0.1 W/m2K
  • Factory manufactured under strict quality control, the Kingspan ULTIMATM Building System is quick and easy to install – reducing labour costs and build times
  • Factory pre-fitted Insulation with airtight membrane and integral service Void
  • Minimises cold bridging and air leakage
  • Slimmer than any other commonly available build system providing additional space benefits, potentially increasing the value of your home
  • Facilitates a fast and accurate build using a highly engineered precision manufactured system

Product Information

The provision of a dedicated service void maintains the integrity of both the insulation and airtightness of the wall. The Kingspan ULTIMA panel jointing system maintains continuity of airtightness not only at panel to panel junctions but also at critical junctions with foundations, intermediate floors and roof. In whole building airtightness testing ULTIMA has consistently delivered permeability’s less than 2m3/ @ 50pa.  The Air Leakage barrier dressed into openings, allows a simple tape seal to windows, doors and other wall penetrations.
Continuity of the premium performance Kooltherm®  Insulation internal lining not only ensures the elimination of thermal bridging within the ULTIMA™ panels but also at critical junctions with foundations, intermediate floors and roof. Full thermal modelling of critical details has been carried out to optimise thermal efficiency and determine ψValues.
The Kingspan ULTIMA Building System provides enhanced fire resistance performance over standard ‘open panel’ timber frame systems and achieves this by incorporating Kingspan Kooltherm insulation as an internal overlay which protects the structural frame.
The Kingspan ULTIMA Building System exceeds the requirements of Approved Document B Volume 1 with regards to fire resistance when tested in accordance with BS EN 1365:1 1999 and achieved 49 minutes structural integrity using a standard 15 mm plasterboard lining.

Independent fire assessment confirm that Kingspan ULTIMA would achieve 30 minutes fire resistance using a 12.5 mm standard plasterboard lining and should any element of your home require a 60 minute structural integrity, this can be achieved with a 15 mm fire resistant plasterboard.

How does ULTIMA deliver these benefits?

Kingspan Timber Solutions use the exceptional performance characteristic of Kingspan Kooltherm to enhance the performance of its systems.
Kingspan Kooltherm

The Kooltherm K-range is an extensive range of premium performance phenolic insulants for roof, wall and floor insulation.

Kingspan Kooltherm K12 Framing Board with a fibre-free rigid thermoset phenolic insulation core faced on both sides with a low emissivity composite foil facing. By using Kingspan Kooltherm® the thickness of insulation included in external walls can be minimised and the floor space available for use increased.
Kingspan Kooltherm offers the following benefits:

  • With a thermal conductivity of 0.018–0.023 W/m.K these are the most thermally efficient insulation products in common use.
  • The thinnest commonly used insulation products for any specific U–value.
  • Manufactured with a blowing agent that has zero Ozone Depletion Potential (ODP) and low Global Warming Potential (GWP).
  • The closed cell structure resists both moisture and water vapour ingress, a problem which can be associated with open cell materials such as mineral fibre which can result in reduced thermal performance.
  • Unaffected by air infiltration – a problem that can be experienced with mineral fibre and which can reduce thermal performance.
  • Safe and easy to install – fibre-free core.
  • If installed correctly, can provide reliable long term thermal performance over the lifetime of the building.

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Kingspan Timber Solutions Ltd

Please contact us to discuss your project

Eltisley Road

Great Gransden



SG19 3AR

01767 676400