Tapered Insulation

Tapered Insulation is a process for creating a slope or fall on a flat roof. It is essential when designing a flat roof that a fall is included as a way of allowing the water to run off of the roof.
Tapered Insulation Design

Tapered Insulation explained

Tapered Insulation ensures the thermal performance and falls within the roof are captured at the design stage and is a very cost effective and efficient method for managing these areas of a flat roof.

Our Technical Services Team are on hand to support you with project-specific tapered insulation designs,  free u value calculations and condensation risk analysis.



BS 6229 (2018): Flat roofs with continuously supported flexible waterproof coverings – Code of practice

BSI Standards Publication 

With over 100 years of experience the British Standards Institute committees work with the manufacturing and service industries, government, businesses and consumers to facilitate the production of British & European standards.

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Technical Services

Technical Services

It’s the quality of BMI expertise and technical services that make all the difference. Like working with you to support; writing specifications with insightful, evidence-based recommendations alongside the objectivity of a multi-technology manufacturer and the exclusive installation service of our Approved Contractor Networks - The IMA and Team Icopal who turn BMI Icopal specifications and materials into tested and certified flat roof solutions – assured by market-leading guarantees. 

Flat Roofing Services


Further information and technical support

Contact our Technical Services team

Our team of experienced roofing specialists can help you to identify the best solution for your roofing project.

Tel: +44 330 123 4585 or email technical.uk@bmigroup.com

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Specification & design

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