What is it? Set 278

At a *guess*, with two or more adjacent boards (I think that three or more would be better) you can start the tongues into the grooves at either edge with the center lifted and push down the middle to expand the edges.

Enjoy, DoN.

Generally it is used when you want to lift up one or two boards to get at the space underneath to install pipework or cabling and normally you would screw the old boards back down when you have finished.

Termites are not normally a problem in the UK.

A new tongue-and-groove floorboard is commonly installed by removing the bottom edge of the groove side. It can then be installed on the tongue side first and wedged into place. It has to be face nailed with finish nails and the holes filled.

Don Young