Synthesia Technology began its activity in the manufacture of polyurethane systems for the insulation market in 1964, being a pioneer in Spain in the manufacture of in situ polyurethane projection systems. Later it expanded its range of products designed and formulated with polyurethane systems for industrial applications. Today it is a benchmark in the polyurethane market both in insulation and in industrial applications.

Red Letter Supplies are proud to be sole distributor for Synthesia products in Ireland and in the UK. We work closely with the technical team in Synthesia to develop and/or source the right product for your application.

Synthesia have 2 products, one open cell and one closed cell, certified by the NSAI and are currently working on getting BBA certification for those same two products. All of their products have been extensively tested and all carry the CE mark.

Air Pump & Tool

Air Pump & Tool Ltd was set up by Pat Mc Connell in 2004. They have over 30 years experience with Graco Fluid Handling & Spraying Equipment. Pat has worked as a Technical Services Engineer with Desoutter Ltd at their manufacturing plant of Industrial Air & Electric Tools in London.

Red Letter Supplies work closely with Air Pump & Tool designing custom solutions for our clients. We also hold some of their stock in our Longford warehouse for the convenience of our customers.


Soltherm have been manufacturing building products for more than 25 years.

All of their products are manufactured on one of the most advanced production lines in Europe and under the supervision of specialist technicians. The production process is ISO certified and supervised by Global Quality. The company is expansion-oriented and wants to achieve that by establishing and strengthening long-term and ethical relationships with their customers and all business partners.

They employ and continuously improve the latest organizational techniques and environmentally friendly technologies.

Red Letter Supplies are proud to partner with Soltherm to supply their External Wall Insulation system in Ireland.

Passive House Systems

Passive House Systems have been involved in a range of airtight house construction products and services in Ireland for improving the energy performance in new-builds and existing houses since 2008.

With engineering, procurement, sales and logistical bases in Ireland, UK, Germany and Poland they are well placed to provide leading product technologies and supporting services.

To compliment the excellent products they supply, they offer the following services to support the successful product system design, product selection, installation and, where applicable, maintenance.

Passive Sills

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. They 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.