You can easily damage the contents inside.
Manufacturers normally produce standard packets for every flat pack.
Listed buildings may not be allowed to make any adjustments. Mosaic Tiles - Grouting can be very time consuming with mosaic tiles. To save some time put the correct amount of adhesive on the wall and press the tiles into the adhesive firmly. The adhesive will begin to seep through the gaps in the mosaic. Wipe off the excess adhesive and there is no need to grout.