Advice & guides
Plain-English guides to timber windows
U-values explained: what the glazing numbers actually mean for a period home
What does U-value 1.1 actually mean? The window heat-loss number explained plainly — single vs double glazing, what Building Regulations require, why the cavity matters.
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Draught-proofing original sashes vs replacing: an honest guide
Sometimes your original sash windows are worth saving. When draught-proofing and refurbishment win, when replacement wins — from a company that sells replacements.
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Bifold windows: the kitchen trend that actually suits period homes
The folding servery window has arrived in period kitchens. When a bifold window works, when you want bifold doors instead, and how to keep it in period character.
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What determines the price of a made-to-measure window?
Size, timber, bars, colour — how made-to-measure window pricing actually works, why quotes vary so wildly between companies, and how to compare them fairly.
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Choosing a RAL colour for a period home
Any RAL colour, factory-painted, at no extra cost. How to choose window colours for a period property — and when two colours beat one.
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What's inside a box sash: cords, weights and why they still matter
What actually makes a box sash window work? The anatomy — box frame, cords, cast weights, pulleys — and why the Victorian mechanism is still the best one.
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Sash windows in conservation areas: what officers actually look for
Replacing sash windows in a conservation area? What conservation officers actually assess — proportions, bars, materials — and how to get approved first time.
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How to measure a sash window (and the one mistake everyone makes)
Measure for made-to-measure sash windows in 10 minutes with a tape measure. The three-measurement rule, and the wide-opening mistake to avoid.
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Pine vs meranti: which timber is right for your windows?
Hardwood or softwood for your new timber windows? The real differences in lifespan, maintenance and price — explained plainly, without the sales pitch.
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