Chester Zoo TR/MG Unilin Insulation Case study
TR/MG (Single Ply Fully Adhered, Partially Bonded Built-Up Felt System)
Residential Leisure/Hospitality
Chester, UK
Chester Zoo
Lester Cladding
Hamilton Architects

The restaurant has a pavilion-like structure with an unusual roof comprising nine hexagonal peaks linked by seven flat areas.


Water ingress through the old roof had forced shut down of the café multiple times making it necessary to renew the entire buildup. The beautifully designed trapezoidal featured roof was hugely complex.
The extremely intricate design process involved SIG as system experts alongside Tapered Plus in designing the cut to fall scheme that achieved the correct U-Value for the new roof.

Unilin Insulation’s Solution:
Our TR/MG product is a high performance polyisocyanurate with mineral coated glass facers which is suitable for use below single ply waterproofing system. It is also compatible with partially bonded built-up felt and many liquid waterproofing systems. In addition, the insulation boards are easy to handle, cut, and secure with insulation adhesive or mechanical fixings. The specifications and quantities met U-Value of 0.18W/m2K, which is required by the updated Building Regulations Part L
.   (published in 2021).


Chester Zoo TR/MG Unilin Insulation Case study

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