16. No more gaping instructions. 1 No more gaping small gaps. No more gap edges to all panels that fit against walls. Tip Use a wet cloth to wipe panel clean and produce a smooth job. 2 No more gaping large gaps. If the gap is 3mm or wider run a bead of construction glue as a base for the no more gaps taking care to keep the glue off the surface of the panel and the wall. Once the glue has dried you can then apply the no more gaps as usual. Tip, When applying the glue, try to keep the glue below the surface and use mineral turpentine to clean any excess glue off whilst wet.