Now under new management, Sill-Line Perimeter Heating Ltd was formed 15 years ago by the purchase of the perimeter heating activities of Copperad which were then trading under the Myson RCM name from Wolverton near Milton Keynes. New facilities were then established in Daventry.

Two years later the company acquired the Warmline Perimeter Heating business from Biddle Air Systems based in Nuneaton.
In 2002 Sill-Line Perimeter Heating Ltd acquired the natural convector business of Lennox Industries and at the same time the Daventry facilities were doubled in size. In 2006 Sill-Line Perimeter Heating Ltd acquired the Spiral Wound Tubing business of Gunning Engineering to add heavy duty steel heat emmitters to the already comprehensive range of commercial products.

Sill-Line Perimeter Heating Ltd is the only UK Company to focus exclusively on the sales, production and development of perimeter wall mounted and trench heating systems. The company is uniquely able to draw upon the great heritage of the product lines established by Myson, Biddle, Copperad and Lennox boasting over 100 years of design experience within the present workforce.
Since commencing trading Sill-Line Perimeter Heating Ltd has supplied over 250 km of heating systems and is justly recognised as the leading specialist company in the sector. Wherever possible Sill-Line Perimeter Heating Ltd prides itself at offering a solution that meets the exact needs of each installation and where necessary provides a custom built product to meet individual design requirements.

Sill Line - Where Special is Standard