We live close to a train track which causes some 'shaking' of the house. When we removed the lino downstairs the self leveling grout that was initially laid had all cracked and heaved between the footing and the floor. It looked as though the builders hadn't cleaned the floor of rocks before layed the lino. So, we removed the lino to prepare the floor for laminate installation. Now we need to replace the self leveling grout. Should we keep a 'space' between the floor and footing to help prevent the grout from breaking?