Having some diy dilemmas in respect of the raised floor I built, to be covered in 18mm WBP ply to raise a free standing bath and shower sufficiently to overcome some plumbing restrictions caused by a steel I beam.
Having built it, I'm having a crisis of confidence. My queries are as follows:
a) I built the supporting structure with 3.5x1.5 timber, on edge, resting directly on the 4x2 flooring joists, with additional noggins where necessary. It's all screwed together rather than nailed. However, I'm wishing now that I used 4x2, as I'd then have a clear 1" supporting edge under the ply where the sheets abut each other. Should I redo my frame in 4x2? I'll have wasted about £35 of timber and a weekend if the answer is yes
There are 4 x long joins that share an edge on my "mini" joists and the screws need to be very close to the edge of the ply as a result.
b) The eventual surface will be floor tiled. Thus I used 18mm WBP for the platform, based on suggestions I'd read online. My query here, is should I lay the ply on top of a flooring chipboard underlay to give additional support, or is it sufficient in itself? I guess I'm worried that the localised load the 4 x feet of a full freestanding bath might flex the ply and give me problems.
Rebuilding the frame in 4x2 would be easy now that I've done one and figured out all the dimensions! Just my diy time and cost of the 4 x 2 (about 20m).
Having built it, I'm having a crisis of confidence. My queries are as follows:
a) I built the supporting structure with 3.5x1.5 timber, on edge, resting directly on the 4x2 flooring joists, with additional noggins where necessary. It's all screwed together rather than nailed. However, I'm wishing now that I used 4x2, as I'd then have a clear 1" supporting edge under the ply where the sheets abut each other. Should I redo my frame in 4x2? I'll have wasted about £35 of timber and a weekend if the answer is yes
There are 4 x long joins that share an edge on my "mini" joists and the screws need to be very close to the edge of the ply as a result.b) The eventual surface will be floor tiled. Thus I used 18mm WBP for the platform, based on suggestions I'd read online. My query here, is should I lay the ply on top of a flooring chipboard underlay to give additional support, or is it sufficient in itself? I guess I'm worried that the localised load the 4 x feet of a full freestanding bath might flex the ply and give me problems.
Rebuilding the frame in 4x2 would be easy now that I've done one and figured out all the dimensions! Just my diy time and cost of the 4 x 2 (about 20m).
