The Internorm triple glazed inward opening windows are performing as expected. Great flexibility with options to tilt (inwards at the top) for ventilation in the warmer months and the full turn for fully opening the window for access and cleaning. There’s also a trickle setting (with the handle set at 45 degrees) allowing background ventilation by just allowing the window to sit off the seals. The benefit here with retrofit is that rooms can be ventilated traditionally with the window providing trickle ventilation but if an MVHR is fitted at a later date then the window can be closed and there’s no trickle ventilator to solve either aesthetically or thermally. Great to wake up on a cold winters day and have condensation on the outside of the triple glazing – a sure sign that very little heat is being lost through the glass! You can see from the image that the condensation evaporates around the edge of the glass first where the spacers/frame are less thermally efficient than the glass itself. Great to see all the theory become reality.
