About Us

Poly Passive Mouldings, trading as Passive Sills, is the leading specialist provider of super lightweight, thermally efficient and cost effective window sills, oversills and insulated thresholds, compliant with current Irish and UK building regulations and energy efficiency standards. We design, fabricate and supply our products to commercial and residential projects internationally from our manufacturing facility in Ireland.

Our products are recommended by leading architects, engineers and construction professionals. The Passive Sills product range is used extensively by construction developers, building firms and Local Authorities in private and social public housing, as well as in commercial developments.

For home energy efficiency improvements, whether you are self-building or a small contractor, your project will be future proofed when you include Passive Sills products.

Meet the team

Patrick Beausang

CEO and Founder of Passive Sills

+353 86 023 4452

Nicole Maverley Sales and Marketing

Nicole Maverley

Sales and Marketing

+353 89 442 3443

Vicky Tammadge


+353 21 201 9056