Do We Ever Really Care Who Lived In Our...
Home & Garden16 mins ago
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For more on marking an answer as the "Best Answer", please visit our FAQ.The simple answer is NO, Vents must-not be installed in to the builders opening. what sort of ventilation did you have befour double glazing ? why did the glass company not replace any vents? you need to ask them to reinstall any ventilation that they have removed, they are putting your life at risk.
You can have draft free vents fitted please contect your local corgi installer