Retrofit Sills Ltd. Insulated Window Cills and Oversills – Perfect for New and Old Buildings
New Build Insulated Window Sills and Retrofit Window Sills to fit Existing Buildings with External Wall Insulation
Retrofit Sills Ltd. is a member of the Neustone group of companies.
Retrofit Sills Ltd. provide superior quality insulated window sills for the construction industry. We supply oversills for the EWI market and new build sills for both the UK and Ireland.
Our window sills are light-weight, durable and eliminate cold-bridging. They can be retrofitted to existing window sills making them the ideal choice for external insulation contractors, or can be used in new builds.
The sills are easily customised and very easy to install (see our Installation Guide for more details) and can be fitted to the most awkward windows.
Our sills are the only insulated sills strong enough to carry Windows and the only insulated sills proven to be waterproof
Contact Us for more information on how we can help your needs.
EASY TO FIT
RANGE OF SIZES
FULLY TESTED & CERTIFIED THERMAL ANALYSIS
PERFECT FOR NEW BUILD WINDOW SILLS
RETROFIT OVERSILLS TO EXISTING PROPERTIES
WINDOWSILLS FOR THE CONSTRUCTION INDUSTRY
#1 CHOICE FOR INSULATION CONTRACTORS