Raising toilet height due to new flooring..

[JohnD]

I certainly drilled and countersunk mine. It's neater. Screw one or two down while you decide on the countersink depth, because they will pull themselves down a bit. I put them in at 300mm intervals, adjusted to suit lengths and positions of joists and joints.

Chalk the pipe and cable runs on the surface first to avoid unfortunate accidents.

 

[Keithmac]

When I wound my screws in tight they sat slightly recessed in the plywood.

After varnishing I gave them all a smear of silicone so it was completely flat, you cannot see or feel anything under the vinyl.

As said abobe see how it looks.