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ThomasWolf230 Jul 2015 16:55Dear friends,
I need your help. I want to convert an unfinished flat-roofed swimming pool extension into two rooms. On the right side is the garage, on the left side the conservatory, and straight ahead the garden. Since the ceiling height is only 2.00m (6 ft 7 in), I plan to lower the floor by 0.80m (2 ft 7 in) from the 1.5m (5 ft) depth of the pool. I don’t want to fill the remaining empty space of 0.70m (2 ft 4 in) underneath with tons of concrete, but rather build a wooden structure. The beams will be supported with joist hangers, spaced 60 cm (24 inches) apart. In the middle of the 3.80m (12 ft 6 in) beams, wooden posts will be used underneath, resting on roofing felt to avoid direct contact with the concrete, preventing beam deflection.
Between the beams (two beams with 14 cm (6 inches) and 6 cm (2.5 inches) height battens) I want to install 20cm (8 inches) of compressed insulation fleece, cross battens underneath to prevent insulation from falling through, then a vapor barrier, 25 mm (1 inch) OSB boards on top, and finally laminate flooring. Finished.
The house is built on a slope; at the back, there will be a window 3.00m (10 ft) wide. The slope was cut down by 0.80m (2 ft 7 in) to create a level with the interior floor.
Question about insulation: does the floor need to be insulated that thick, considering there is no moisture below and the pool is buried 1.50m (5 ft) underground?
Is it advisable to insulate the garage side from inside the garage, since technically 0.70m (2 ft 4 in) is under the garage because I lowered the interior level?
The same for the garden side: I want to excavate 1.50m (5 ft), insulate the wall down to the foundation, and refill 70 cm (2 ft 4 in) to match the interior floor level. This means the 0.70m (2 ft 4 in) space underneath the bedroom would be insulated.
Should I keep the empty space below airtight, or should I drill through the wall on the outside and install, for example, 100 mm (4 inch) ventilation pipes for air circulation?
Thank you very much
I need your help. I want to convert an unfinished flat-roofed swimming pool extension into two rooms. On the right side is the garage, on the left side the conservatory, and straight ahead the garden. Since the ceiling height is only 2.00m (6 ft 7 in), I plan to lower the floor by 0.80m (2 ft 7 in) from the 1.5m (5 ft) depth of the pool. I don’t want to fill the remaining empty space of 0.70m (2 ft 4 in) underneath with tons of concrete, but rather build a wooden structure. The beams will be supported with joist hangers, spaced 60 cm (24 inches) apart. In the middle of the 3.80m (12 ft 6 in) beams, wooden posts will be used underneath, resting on roofing felt to avoid direct contact with the concrete, preventing beam deflection.
Between the beams (two beams with 14 cm (6 inches) and 6 cm (2.5 inches) height battens) I want to install 20cm (8 inches) of compressed insulation fleece, cross battens underneath to prevent insulation from falling through, then a vapor barrier, 25 mm (1 inch) OSB boards on top, and finally laminate flooring. Finished.
The house is built on a slope; at the back, there will be a window 3.00m (10 ft) wide. The slope was cut down by 0.80m (2 ft 7 in) to create a level with the interior floor.
Question about insulation: does the floor need to be insulated that thick, considering there is no moisture below and the pool is buried 1.50m (5 ft) underground?
Is it advisable to insulate the garage side from inside the garage, since technically 0.70m (2 ft 4 in) is under the garage because I lowered the interior level?
The same for the garden side: I want to excavate 1.50m (5 ft), insulate the wall down to the foundation, and refill 70 cm (2 ft 4 in) to match the interior floor level. This means the 0.70m (2 ft 4 in) space underneath the bedroom would be insulated.
Should I keep the empty space below airtight, or should I drill through the wall on the outside and install, for example, 100 mm (4 inch) ventilation pipes for air circulation?
Thank you very much
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