Window & double glazing guides
Costs, materials, repairs and how to compare quotes without the hard sell.
Bay window replacement cost UK: what to expect
What a uPVC bay window costs to replace in 2026 by number of sections, why the structure above it matters, and the extras a cheap quote leaves out.
Read the guide →Casement vs sash vs tilt and turn windows explained
How casement, sash and tilt-and-turn windows work, what each is good and bad at, and which style suits your rooms, upper floors and period features.
Read the guide →Condensation on windows: causes and how to stop it
Why windows run with water on cold mornings, how to cut it without spending a penny, and when interior condensation points to a bigger damp problem.
Read the guide →Double glazing cost UK 2026: per window and whole house
What double glazing costs in 2026 by window style and frame material, whole-house prices, the extras people forget, and how to knock hundreds off the quote.
Read the guide →FENSA vs CERTASS: what window certification means
What FENSA and CERTASS certificates actually prove, why you need one, how the schemes differ, and what to do if your windows were fitted without one.
Read the guide →How to compare double glazing quotes (and spot a bad one)
How to get quotes you can actually compare, the spec details that must match, the sales tactics to walk away from, and how to protect your deposit.
Read the guide →Is double glazing worth it? The honest maths
What double glazing actually saves on energy bills, how long the payback really is, and the reasons it can be worth it even when the numbers do not add up.
Read the guide →Misted double glazing: repair or replace, and the cost
Why double glazing mists up, what it costs to reglaze a blown unit versus replacing the window, and when the frame means a repair is not an option.
Read the guide →Signs you need new windows (and when a repair will do)
The signs a window is past saving, the ones a repair fixes for a fraction of the cost, and how to tell interior condensation that is not the window's fault.
Read the guide →uPVC vs aluminium vs timber windows: which to choose
How uPVC, aluminium and timber windows compare on cost, upkeep, looks and lifespan, and a straight answer on which suits your type of house.
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