Maddin
2011-10-02 17:22:35
- #1
Hello dear forum participants,
The massive hailstorm a few days ago damaged the twin-wall sheets on our old shed roof quite badly... ;-( It is now leaking in several places, and I thought about completely throwing down the twin-wall sheets, installing a formwork made of tongue and groove boards or OSB panels, nailing a layer of 200-bitumen roofing membrane (or SICOTEC if the price is acceptable) on it, and then fully welding a PYE G 200 S4 on top. Alternatively, PYE G 200 S4 as the first layer and then the PYE Photovoltaic 200 S5 or PYE Photovoltaic 250 S5 on top.
Is this roof construction okay for a shed roof? Are there better solutions that are more cost-effective?
The roof should not be a terrace or anything similar but should be "walkable" two to three times a year for tree pruning, canopy cleaning, etc.
21/22 mm is probably a bit thin for the formwork, so I wanted to use 25/28 mm thickness? Is tongue and groove board better, or are OSB panels also acceptable?
The shed is a timber-frame building adjacent to two side-by-side precast concrete garages, made of approximately 12x12 cm posts/beams and 10x18 cm solid wood rafters (spacing 59-98 cm) with a maximum span of 3.90 m and an eave overhang of 60 and 80 cm respectively. The monopitch roof has about 21 m², approximately 3° slope, and is drained via a copper gutter.
The best of all wives would like the garage roof and preferably also the shed roof extensively greened. I can’t really come to terms with this yet. Not because of the appearance, ecological benefit, tightness, or structural reasons—with 55 kg/sqm (water-saturated), for example, the FlorDepot system only exerts about half as much load as the previous gravel topping—but because of the drainage of the canopy roof over the garage and the shed. My concern is that, for example, during heavy rain, the green roof with the vegetation mats will simply be washed away.
The canopy roof is not exactly small... 11 m long and 2.80–5.30 m wide, with a 7° slope, and drains over the long side onto the garage and shed. Are my concerns unfounded, or have I perhaps failed to consider something completely different?
Many thanks for your tips and suggestions
The massive hailstorm a few days ago damaged the twin-wall sheets on our old shed roof quite badly... ;-( It is now leaking in several places, and I thought about completely throwing down the twin-wall sheets, installing a formwork made of tongue and groove boards or OSB panels, nailing a layer of 200-bitumen roofing membrane (or SICOTEC if the price is acceptable) on it, and then fully welding a PYE G 200 S4 on top. Alternatively, PYE G 200 S4 as the first layer and then the PYE Photovoltaic 200 S5 or PYE Photovoltaic 250 S5 on top.
Is this roof construction okay for a shed roof? Are there better solutions that are more cost-effective?
The roof should not be a terrace or anything similar but should be "walkable" two to three times a year for tree pruning, canopy cleaning, etc.
21/22 mm is probably a bit thin for the formwork, so I wanted to use 25/28 mm thickness? Is tongue and groove board better, or are OSB panels also acceptable?
The shed is a timber-frame building adjacent to two side-by-side precast concrete garages, made of approximately 12x12 cm posts/beams and 10x18 cm solid wood rafters (spacing 59-98 cm) with a maximum span of 3.90 m and an eave overhang of 60 and 80 cm respectively. The monopitch roof has about 21 m², approximately 3° slope, and is drained via a copper gutter.
The best of all wives would like the garage roof and preferably also the shed roof extensively greened. I can’t really come to terms with this yet. Not because of the appearance, ecological benefit, tightness, or structural reasons—with 55 kg/sqm (water-saturated), for example, the FlorDepot system only exerts about half as much load as the previous gravel topping—but because of the drainage of the canopy roof over the garage and the shed. My concern is that, for example, during heavy rain, the green roof with the vegetation mats will simply be washed away.
The canopy roof is not exactly small... 11 m long and 2.80–5.30 m wide, with a 7° slope, and drains over the long side onto the garage and shed. Are my concerns unfounded, or have I perhaps failed to consider something completely different?
Many thanks for your tips and suggestions