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Discussion Starter · #1 ·
Just returning to railway modelling after a short gap of about 45 years. Hence a few knowledge deficiencies that are being filled by MRF.

I am laying Peco streamline on 3mm cork this winter on a loft layout. It occurred to me that if the track joins are tight at current temperatures - say 5-10 degrees C then in the summer the nickel silver will expand and maybe cause track to buckle. This would be avoided by leaving expansion gaps at track joins.

Can anyone comment whether this is likely to be a problem and if so what is the recommended gap to be left at joints.

I am insulating the roof over the layout to minimise temperature fluctuations but they cannot be avoided.


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