Can someone help me out with the difference between limescale and mildew?
I have horrible brown bits on the plaster between the wall tiles and my
shower tray in my en suite. The build-up is underneath the plaster and
therefore is impossible to remove without pulling off the plaster and risk
water penetration into my downstairs room.
I can't remember how many times I've had to remove the plaster, clean off
the limescale / mildew, apply new plaster and wait for it to dry. There
must be an easier solution. We live in a hard water area and the en suite
has an extractor fan.
Limescale is very hard calcium salts, normally off-white, whereas mildew is
live fungus and is normally black, brown or grey in colour. Brown bits are
more likely to be fungus rather than limescale. Plaster is normally between
the wall surface (brick or breeze block) and the tiled surface, not between
tiles and the shower tray. There is normally grout or silicone sealant
between the bottom row of tiles and the shower tray, and fungus will grow in
that area. Are you confusing grout with plaster? If so, the grout needs
raking out, the gap treated with a fungicide, and then filled with a
fungus-resisting silicone sealant. If the edge of the shower tray is subject
to flexing when in use then anything used to fill the gap between the tray
and tiles will tend to crack and let water penetrate, and fungus growth will
HomeOwnersHub.com is a website for homeowners and building and maintenance pros. It is not affiliated with any of the manufacturers or service providers discussed here.
All logos and trade names are the property of their respective owners.