20 year old extension 'settling'

portchieboy

I have no knowledge of building matters, and so am looking for a little advice please.

Many years ago we had a 2 storey extension put up, all very nice. There was a minimum of settlement over the years. Now however, I am seeing a little plasterwork cracking around where the steels met in the middle of the house, ceilings, ground floor. There are cracks appearing on the outside top floor rendering, and adjacent internal plaster.

Not big, but certainly noticeable.

There is no cracking on the external brickwork.

So, it does not look like subsidence, nothing else in the street.

Can anyone advise please if I should be worried. If it needs looking at, is it a builder, or a chartered surveyor? Would such a thing be covered on household building insurance.....I am never sure what we pay for except the fire side?

Thanks.

cyclonebri1

20 years ago were all cavity as today, therefore all probs do not transfer, 1 wall can move independant of the other.

Cavity walls with ties simply give space for insulation and prevention of walls spreading.

Furts

Any trees growing nearby, and combined with clay ground?

If not, and there are no water leaks in the ground, or changes to the ground, probably nothing to worry about.

Without seeing nobody can be sure, but many extensions have cracks somewhere, sometime.