DIY Doctor

Main navigation

White stuff blocking hot water in a mixer tap

Postby Lumbertubs » Wed May 06, 2020 7:40 pm


I've just had to clear some white stuff that was blocking the hot water side of a mixer tap over a bath. I took a photo but the file size is too big to post.

It's opaque, not sticky at all and easily scraped away. Kind of reminds me of wallpaper paste. I'm in Birmingham which i don't think is a hard water area.

We've been in this house for over 8 years and this happened for the 1st time about four months ago then again two weeks ago and now a 3rd time tonight. It's happened once recently in a similar mixer tap for the shower in the en suite.

Its an easy fix obviously but I was wondering if anyone could tell me what it is and why it's happening (and more frequently).

Not sure if its relevant but we have a separate hot water tank. A megaflo indirect cylinder (whatever that means).

Rank: Labourer
Progress to next rank:
Posts: 1
Joined: Wed May 06, 2020 7:17 pm


Simply Build It

  • DIY How to Project Guides
  • DIY how to tutorial projects and guides - Did you know we have a DIY Projects section? Well, if no, then we certainly do! Within this area of our site have literally hundreds of how-to guides and tutorials that cover a huge range of home improvement tasks. Each page also comes with pictures and a video to make completing those jobs even easier!

  • Related Topics