Wazza187
17th Jan 2012, 04:52 PM
Hi Guys,
I have a double brick house, circa 1928. It is currently uninhabited while we are doing fairly major work to it.
I'll be installing an attic ladder (red rectangle on picture) and since I currently have a ceiling down in one of the rooms, I have easy access to install big flooring sheets into the roofspace. (Don't want ladder in hall, as this is prime load bearing territory for storage.)
My intention is to use the area for storage only (uninhabitable space), and the area in Yellow would be where the main load would go, as it is well supported by strong brick internal walls, however, since the costs aren't massive, I am considering flooring the entire space, and marking the area where heavy loads can go. (if I only floor a small section, I'd have to put up walls / rails and eventually I will use closed cell insulation to make the area, or a portion of, dustproof. Would be easier if I can just eventually staple the insulation/dustproofing to the rafters when I'm finished, rather than build another structure.
I would not be modifying the roof trusses/support at all, as there is enough open space already.
The ceiling joists are hardwood, at 450mm centres, and (from memory) are about 100mmx~60-75mm?, they hang across the rooms (left to right) and rest on wood ontop of the internal and external brick walls.
There is no current insulation, so I was planning on installing R2.5 90mm insulation (insulco acousti therm), and some type of flooring sheet directly on top of the ceiling joists, it's pretty simple and honest up there, removed old water tank, and no more water pipes in roof, only electrical, I will leave cutouts around jboxes and light positions (all pendant lights, no halogens), will run the cables ontop of flooring for easy access. (it's all new wiring, no conduit)
Old ceilings where horsehair/plaster with timber lapping(?), new Ceilings are Unispan 10mm Gyprock (25% lighter than normal plasterboard), so some weight reduction already.
My question is.... what flooring to use?
Obvious, cheapest answer is 19mm Yellowtounge, as i already have 450mm centres, but I am worried it may be too heavy?
At about twice the price, would 12mm Plywood be better? (is weight difference significant?)
Just from grabbing prices off bunnings website, Yellowtongue would be ~$999 (3600x900x19 @ ~$37), 12mm Plywood = $1800 (2400x120x12 @ ~$45)
Anyone know the weight difference? or any other suggestions as to what should be done?
Thanks!
87860
I have a double brick house, circa 1928. It is currently uninhabited while we are doing fairly major work to it.
I'll be installing an attic ladder (red rectangle on picture) and since I currently have a ceiling down in one of the rooms, I have easy access to install big flooring sheets into the roofspace. (Don't want ladder in hall, as this is prime load bearing territory for storage.)
My intention is to use the area for storage only (uninhabitable space), and the area in Yellow would be where the main load would go, as it is well supported by strong brick internal walls, however, since the costs aren't massive, I am considering flooring the entire space, and marking the area where heavy loads can go. (if I only floor a small section, I'd have to put up walls / rails and eventually I will use closed cell insulation to make the area, or a portion of, dustproof. Would be easier if I can just eventually staple the insulation/dustproofing to the rafters when I'm finished, rather than build another structure.
I would not be modifying the roof trusses/support at all, as there is enough open space already.
The ceiling joists are hardwood, at 450mm centres, and (from memory) are about 100mmx~60-75mm?, they hang across the rooms (left to right) and rest on wood ontop of the internal and external brick walls.
There is no current insulation, so I was planning on installing R2.5 90mm insulation (insulco acousti therm), and some type of flooring sheet directly on top of the ceiling joists, it's pretty simple and honest up there, removed old water tank, and no more water pipes in roof, only electrical, I will leave cutouts around jboxes and light positions (all pendant lights, no halogens), will run the cables ontop of flooring for easy access. (it's all new wiring, no conduit)
Old ceilings where horsehair/plaster with timber lapping(?), new Ceilings are Unispan 10mm Gyprock (25% lighter than normal plasterboard), so some weight reduction already.
My question is.... what flooring to use?
Obvious, cheapest answer is 19mm Yellowtounge, as i already have 450mm centres, but I am worried it may be too heavy?
At about twice the price, would 12mm Plywood be better? (is weight difference significant?)
Just from grabbing prices off bunnings website, Yellowtongue would be ~$999 (3600x900x19 @ ~$37), 12mm Plywood = $1800 (2400x120x12 @ ~$45)
Anyone know the weight difference? or any other suggestions as to what should be done?
Thanks!
87860