Sanding the 70 years old floors

After purchasing a doer upper house, we found out there were woodworms in the bedroom floors and have decided to treat first and keep the original floors afterwards. Treating was easy just sprayed the solution and waited 24 hrs. We have then rented all the equipment, watched a few videos and sanded the floors on a hot day. Then, cleaned the floors with methylated spirit and varnished them afterwards. We had to wait and varnish a second time. Once that wass done, we had to polish the floors 3 times in total to protect them. They still have some wholes from woodworms eating the floors but much better looking than laminate flooring.