Ep 12. Weird Shower Valve; Mossy Roof

In season 18 episode 12 of Ask This Old House, the hosts tackle two unique and challenging home improvement projects.

The first project is a weird shower valve, which has been causing issues for the homeowners. The valve has been leaking and causing water damage, and the homeowners are unsure how to fix it. To start, the hosts investigate the valve and discover that it is an obscure and hard-to-find model. They then try to repair the valve by replacing the internal gaskets, but find that this doesn't fix the problem. Finally, they decide to replace the entire valve with a more modern and easily replaceable model. The new valve is installed, and the shower is once again in working order.

The second project involves a mossy roof. The homeowners have noticed significant moss growth on their roof, which can be damaging to shingles and cause leaks. To remedy this, the hosts begin by cleaning the roof with a solution of water and bleach. They then install zinc strips along the ridge of the roof, which will help prevent future moss growth.

Overall, this episode provides valuable insights into two unique home improvement projects. The hosts use their expertise to diagnose and solve the issues with the shower valve and mossy roof, providing practical tips and advice along the way. Whether you're a DIY enthusiast or simply interested in home improvement, this episode is sure to provide plenty of valuable information.