So just in case glaze defects are driving you craze y sorry i just couldn t resist i thought i would share this excerpt from the late robin hopper s book the ceramic spectrum.
Ceramic tile defects and remedies.
The common defects found is.
Both materials are also very durable and particularly resistant to stains and chemicals so they re often used in high traffic commerical applications including restaurants airports schools hospitals and shopping centres.
Caused by a weakness in the glazed ceramic tile or porcelain tile itself a defect ex.
At this end the temperature of the tile will be in the range of 40 c 80 c.
Loose tiles are common defects of floors using ceramic tiles.
In quality check is done to find whether the tile has defects or it is free from tiles.
Cracking of floor tiles.
Sometimes the body gets swells up.
The tiles are very popular building material for floors as well as for wall because it has more durability and aesthetic look.
Unfortunately ceramic tile surfaces can also occasionally have defects that make them less appealing.
Ceramic and porcelain tiles are incredibly popular in domestic settings as they create a great aesthetic and are very easy to maintain.
After firing and cooling the fired tile is taken to quality check and inspection.
The type and quality of the tiles the quality of the craftsmanship during installation and the compatibility of the material chosen and the intendent usage.
Usually a porcelain body expands 0 7 up to 1000 c shrinks with firing 7 5 from 1100 c to 1200 c and contracts with cooling 0 5 up to 500 c in the kiln.
There are generally three causes for these defects.
Gaps or bubbles in the underlying adhesive bed tiles were laid on an uneven surface.
Some common defects of floor tiles are.
However with wear and tear and due to the lack of proper care different types of tiles defects may appear on tile surface such as buckled tiles cracked tiles faded tiles shade variation in tiles rust stains on tiles etc.
They sometimes also come together with cracks along grout joints.
Examples poor sub surface preparation resulting in washout or gaps in the cement sub strate.
Read on to get some expert pointers on how to solve five of the most common pottery glaze defects such as crawling shown at above.
This is caused by shoddy workmanship when the adhesive required is insufficient or applied with bad technique.