Posted by Charles Brown on January 6, 2025 at 2:34 pm
Hi allI need to insulate the loft garage and I’m not sure if I can insulate , close the space between single bricks wall and stud wall wood. The space between is 5cm and I left for ventilation. Please see attached pictures
No, your insulation is as a insulated box, ventilation allows the wall inside face of brick to breathe should it become saturated vs a marginal improvement reducing cavity ventilation. Closing is un-necessary (unless you were to do it for cavity fire containment).