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Frequently Asked Questions

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  2. Roof Insulation Boards
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Flat Roof Constructions Article

Flat Roof Constructions

We investigate the different types of flat roof construction

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Benefits of Tapered Insulation

What are the benefits of tapered insulation?

Discover the many benefits to using a tapered insulation system on your flat roof project.

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Thermataper TT46
Timber deck with plasterboard ceiling
Metal deck

Thermataper TT46

Thermataper TT46 is a high performance tapered insulation system, providing insulation and drainage in one. It is designed to enhance water drainage for flat roofs waterproofed with mechanically fixed single-ply waterproofing. Thermataper TT46 comes with a supporting design service ensuring an end result that meets the roof’s rainwater run-off and insulation requirements.

Product Highlights

  • Insulation and drainage in one - a practical alternative to screeding, structural falls or firrings

  • Supported by a bespoke tapered roofing design service

  • Suitable for use with most mechanically fixed single-ply waterproofing systems

  • Compatible with most green roof systems

  • Load bearing implications for an existing structure can be minimal

  • Available with FM Approval to FM 4470 - search 'Kingspan Therma' on the FM Approvals website for conditions of approval

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