High performance tapered insulation for flat roofs

Kingspan Thermataper TT47 is a high performance insulation with a fibre-free rigid thermoset polyisocyanurate (PIR) core.

It is designed to enhance water drainage for flat roofs waterproofed with full adhered single-ply, partially bonded built-up felt, mastic asphalt and cold liquid applied waterproofing.

Kingspan Thermataper TT47 is available with FM Approval to FM 4470 - please see the product brochure below or search 'Kingspan Therma' on the FM Approvals online listing website for the conditions of approval. 

There are three Kingspan Thermataper TT47 Systems that can be used:
  • Kingspan Thermataper TT47 - comprises high performance rigid thermoset fibre-free polyisocyanurate (PIR) insulation;
  • Kingspan Thermataper TT47-K Systems - combine the tapered insulation of Kingspan Thermataper TT47 with a premium performance rigid thermoset phenolic Kingspan Kooltherm packer board, providing a slimmer solution; and
  • Kingspan Thermataper TT47-O Systems - combine the tapered insulation of Kingspan Thermataper TT47 with a Kingspan OPTIM-R packer board, providing the thinnest solution.

Product brochure

Our product brochures include U-value tables, handling advice and installation guidance.

Thermataper TT47

Product information

Product details
Useful links
More information
Thermal conductivity The effective thermal conductivity in a tapered roofing system is specific to the individual roof design
Euroclass E
Compressive strength 150 kPa (at 10% compression)
Facings Coated glass tissue
Core High performance rigid thermoset polyisocyanurate (PIR) insulant manufactured with a blowing agent that has zero Ozone Depletion Potential (ODP) and low Global Warming Potential (GWP)
Board size 1.2 x 1.2 metres
Manufactured rate of fall 1:30
Planet Passionate
Through our new Planet Passionate 10-year groupwide sustainability programme, we aim to make significant advances in the sustainability of our business and of our products.

Today, Kingspan Thermataper TT47 is manufactured at two sites and offers the following sustainability performance.
Responsible Sourcing

Kingspan Thermataper TT47 produced at Kingspan Insulation’s Pembridge, Herefordshire and Selby, North Yorkshire manufacturing facilities is certified to BES 6001 (Framework Standard for the Responsible Sourcing of Construction Products) ‘Excellent’.

Flat roofing blogs

Case studies

New - Kingspan Thermataper TT47-K

Kingspan Thermataper TT47-K combines tapered insulation with a premium performance Kingspan Kooltherm packer board, providing a slim solution for use on new and existing roofs with timber or concrete decks.

With a thermal conductivity of 0.018 W/m·K, the Kingspan Kooltherm packer board helps to minimise the overall system thickness required to achieve a desired U-value. Typical thickness savings of 20 - 40 mm could be achieved, dependent on the individual scheme and build-up, when compared with a full Polyisocyanurate (PIR) system.

Download the datasheet for more information.

Kingspan Insulation Ltd

For queries relating to insulation boards, cavity closers or membranes.





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