Welcome to Sustainable Insulation Products

SIP's experience and expertise is in providing an environmentally friendly, cost-effective insulation to the Irish market. A quality service coupled with the highest standards of workmanship has always been at the top of SIP's priorities.

Cosycell Cellulose Insulation

Cosycell cellulose fibre Insulation is an environmentally friendly cost-effective insulation material. A natural wood product made up of 100% recycled newspapers makes it a superior thermal and acoustic insulator

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Cosycell has a wide range of applications for insulating all types of buildings. From timber frames to dormer/sloping roofs to attics and lofts. It can be applied in both dry and wet forms and can be installed to a range of densities.

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At SIP's we offer a wide range of installation services of Cosycell and other insulation products including air tight and turbo fill systems plus internal and external insulation solutions.

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Who are Sustainable Insulation Products ?

Established in 2004 Sustainable Insulation Products Ltd or SIP's for short is an insulation manufacturing company based in Birr, Co. Offaly. Formally trading as Cosycell Insulation, installing cellulose insulation for over 10 years we combine a vast knowledge of the product, its benefits and its best fit applications.

The proper application of insulation has far-reaching economic and environmental benefits to the home owner. Cosycell, a recycled paper based product has been proven to reduce the energy costs of a household by as much as 30% compared with alternative insulating methods. The most important principle is, 'Build Tight and Insulate Right'

Eoin Garry the business owner and main point of contact is always on hand to offer advice and solutions to a range of insulation air tightness requirements.


We have contracted in SIP's for the insulation work on a number of our building projects and always find them a pleasure to deal with. A price and start date is agreed and work is always completed on time. Their quality of work is top class and the insulation is always blown to the correct densities
Niall Dolan, Greentec Eco Homes

cellulose insulation, external wall insulation, passive house, passive house design, house design, bonded bead cavity wall insulation, fibreglass insulation, warmcel cellulose insulation, sheepswool insulation, Birr, Offaly, Ireland