Everything you need to know, before you decide
Real prices, signs to recognise, and how each type of glass works. No small print, no empty promises.
Compare and decide
PVC vs Aluminium
An honest comparison, criterion by criterion, without pushing the pricier option.
Read the guide →How much does it cost to replace windows
Real prices per m², by window type and by project (2 or 3-bedroom flat).
Read the guide →Signs you need new windows
Cold draughts, condensation, noise, air leaks: what each sign actually means.
Read the guide →Window security: RC2 class
What the EN 1627 standard is, and why the lock matters as much as the glass.
Read the guide →How to compare window quotes
What every proposal needs to include, and the red flags before you sign.
Read the guide →Replacing windows when renovating
For foreign owners: the cold-house problem, licences, and running it in English.
Read the guide →Glass and insulation
Acoustic glass: how it works
How it cuts street noise, and how much it insulates in decibels (Rw).
Read the guide →Low-E glass: what it is
The invisible technology that stops heat loss in winter.
Read the guide →Window energy ratings
The CLASSE+ label from F to A+: how it is calculated, and what to ask for without it.
Read the guide →Condensation between the panes
Fog that will not wipe off: the glass unit lost its seal. What to do.
Read the guide →Already know what you need? Calculate your estimate
No contact details required, in 1 minute. Or request a written, itemised quote.