Recent content by Topof

First rule is to apply the moss killer so that the tile is saturated, but no or little product actually arrives in the gutter. If the moss killer is well chosen - Mossgo for instance - it will then degrade in non bio-accumulative compounds, and feed a meal or two to your local ground bacteria...

It has been done on the continent for many years. The technique consists in using a quaternary ammonium biocide to kill the "bio layer", that is all live organisms on the roof. Quaternary ammoniums are powerful algaecides, and deplete moss and lichen from their embedded algae. As they rely on...

There is only one good philosophy to keep a roof for a longtime : Keep it clean. The insulation should not affect the external envelope. There should be a ventilated gap above the quilt, so both sides of the slates are broadly at the same temperature. There is no lasting cure. Slates have...