wrote:
Lawrence Zarb wrote:
What is the best most secure way to fix an mdf window sill to a breeze
block wall?

MDF sills should be avoided. I know from experience that the surface
degrades too quickly in real world use to be a product of any serious
quality.

NT

If you get a new build, the skirting, architraves and window boards
will all be MDF.
I suspect they are durable enough if painted properly.
Simon.