When an eco-conscious self builder from Nottingham wanted to create the most sustainable home possible, there was only one insulation provider up to the job. Renowned for their superior green credentials, Knauf Insulation’s DriTherm Cavity Slab and Thermal Floor Slab, both incorporated with ECOSE® Technology, provided the answer, together with its Room-in- Roof Roll, for superior rafter insulation.

For Mark Sparham, building a sustainable, eco-friendly house was his ultimate goal. Having installed a variety of energy efficient measures across ‘Hill Top Cottage’ from solar panels on the roof, to a heat exchange system and natural lime rendering, Mark wanted an insulation solution that would extend the green credentials even further.

The newly built property’s pitched roof was originally intended to be insulated with a combination of sheep’s wool and PUR insulation, until Mark realised the eco credentials of glass mineral wool insulation and switched the specification to incorporate Knauf Insulation’s Room-in-Roof Roll. Room-in-Roof Roll is made using recycled glass bottles and has a foil facing for swift installation.

Room-in-Roof Roll provides superior performance at pitched roof level, resulting in a high level of thermal and acoustic performance. Jerome Wright of Gusto Construction, the main developers on site, comments: “Not only did the foil facing on the Room-in-Roof Roll provide an integral vapour control layer, the edges can be simply stapled to the roof rafters for easy installation.”

Widely considered as the most sustainable insulation on the market, glass mineral wool offers more points under the Code for Sustainable Homes than any other insulation- with points awarded across numerous code categories. In manufacture it uses a high content of recycled glass bottles and requires less overall energy consumption than some alternative materials, resulting in less carbon emissions. In addition it is recyclable at the end of a building’s life thereby gaining points in the waste category. Glass mineral wool has zero GWP and zero ODP, contributing towards credits in the pollution category. It also has excellent sound absorption characteristics contributing to points on the health and wellbeing section of the Code.

ECOSE Technology further extends these established green credentials as it is manufactured with 70 per cent less energy than traditional binders and contains no dyes or added formaldehyde – providing the ideal solution to the eco-friendly house.

Knauf Insulation supplied DriTherm Cavity Slab for its thermal conductivity and acoustic properties, as well as its high moisture resistance for Hill Top Cottage’s external walls. In addition to being manufactured with ECOSE Technology, DriTherm Cavity Slab is free from all CFCs and HCFCs, further contributing to the green credentials of the development.

For the thermal insulation of the Cottage’s concrete ground floors, Mark Sparham selected Thermal Floor Slab, for its excellent compression strength and thermal conductivity of 0.035W/ mK. Thermal Floor Slab is also exceptionally easy to install, saving a significant amount of time on site.

Mark Sparham comments: “We chose Knauf Insulation’s products with ECOSE Technology, because they are formaldehyde free. We found nothing else on the market that carried these credentials whilst still being super efficient and cost effective.”

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