ENERGY SAVING FORUM › Forums › UNDERFLOOR HEATING SYSTEMS › Underfloor heating near new windows and doors – anything to consider? › Reply To: Underfloor heating near new windows and doors – anything to consider?
Hi, great question – this is exactly the right time to think about underfloor heating, especially if you’re already replacing windows and doors.
From a professional point of view, yes – pipes are usually run quite close to edges like large windows or doors, but not directly to the very edge. You normally leave a small margin (expansion gap + insulation zone), but at the same time, these areas are often designed with slightly tighter pipe spacing to compensate for potential heat loss.
You’re right that openings (especially large glazed areas) can be points of higher heat loss. That’s why proper insulation around the perimeter and correct screed installation are just as important as the pipe layout itself. A well-installed screed ensures even heat distribution and eliminates cold spots, which makes a big difference in real performance.
From experience, the biggest things to plan ahead are:
* insulation quality around edges and thresholds
* correct pipe spacing design (not one-size-fits-all)
* and choosing the right screed to work with the system
This is where a lot of people underestimate the importance of the screed layer — it’s what actually transfers and spreads the heat across the floor.
At Sand Screed London, we work closely with underfloor heating setups and can advise on the best screed solution for your layout, ensuring proper coverage around windows, doors, and high-loss areas. If you want to get it right from the start and avoid issues later, feel free to reach out — happy to help.
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