On Mon, 24 Oct 2011 12:24:10 +0100, Janet Tweedy wrote:

One of the comments is telling. How does this plant get through
the
4" concrete slab and polythene damp proof membrane to appear
inside
the house behind skirtings etc.

Well i know that a Campsis climber was found behind a sofa growing out
of the skirting of a 1930's house in Amersham!

A 1930's house is not likely to have a solid concrete floor and
polythene damp proof membrane over the entire ground floor area.
Walls built onto a concrete foundation or possibly brick built
foundations a few feet into the ground. Ground floor floor
constructed from suspended timber over bare earth.

--
Cheers
Dave.