UPVC Windows
Hard-wearing UPVC casement and tilt-and-turn windows for Lincolnshire homes, fitted by Fensa Approved installers.
Learn moreOur Services
Red Lion Windows is a Fensa Approved installer of windows and doors serving Boston, Lincolnshire and the surrounding towns and villages. We supply and fit UPVC windows, double glazing, composite doors, bifold doors, sash windows, aluminium windows, conservatories, secondary glazing, and more — covering South Holland, South Kesteven, East Lindsey, and North Kesteven.
Double Glazing
High-performance double glazed sealed units installed across Boston and Lincolnshire by a Fensa Approved team.
Learn moreComposite Doors
Robust composite front and back doors supplied and fitted in Boston and across Lincolnshire.
Learn moreBifold Doors
Aluminium and UPVC bifold doors that open your Lincolnshire home to the garden — fitted by Red Lion Windows.
Learn moreFrench Doors
French doors supplied and installed across Boston and Lincolnshire — a classic way to open up your garden access.
Learn morePatio Doors
Smooth-running UPVC and aluminium patio doors fitted across Boston and Lincolnshire.
Learn moreDoor Installation
Supply and fitting of all external door types for Boston and Lincolnshire homes — a professional end-to-end installation service.
Learn moreWindow Repair
Expert window repairs across Boston and Lincolnshire — failed sealed units, broken locks, stiff handles, and frame issues.
Learn moreConservatories
UPVC and aluminium conservatories designed and fitted in Boston and across Lincolnshire.
Learn moreSash Windows
Authentic sliding sash window replacements for Boston and Lincolnshire period properties — traditional look with modern performance.
Learn moreAluminium Windows
Slimline aluminium windows for contemporary Lincolnshire homes, extensions, and commercial conversions.
Learn moreSecondary Glazing
Secondary glazing for Boston and Lincolnshire homes — effective thermal and acoustic improvement without disturbing original windows.
Learn moreNot Sure Which Service You Need?
Call us and we'll give you honest, no-pressure advice.