Window Film Glazing

how easy is to fit a 3ft x 4ft double glazed window?
had 2 quotes £350 & £425! for this 1 window , which is the only one in the house thats not double glazed.have thought of using insulating film , but the frame isnt in v good condition
Depending on your DIY skills fitting a window can be straight forward, providing you fit it square plumb and level all round. I use expanding foam after I've drilled and fixed to get a good all round solid fixing, also uk building regs insist on a draught free seal. Mastic seal around the outside to weather proof, job done.
A look at what is currently available on eBay
Items recently purchased from this site
Double glazing insulation shrink film kit to draught proof windows 12 sqm, Double glazing insulation shrink film kit to draught proof windows, Double glazing insulation shrink film kit to draught proof windows 5x packs, Double glazing insulation shrink film kit to draught proof windows 3x packs, Double glazing insulation shrink film kit to draught proof windows 2x packs, Double glazing insulation shrink film kit to draught proof windows 10x packs,