Cutting back overhanging branches can help to reduce the likelihood of gutters becoming blocked with fallen leaves, as well as improving the circulation of air around the building.
Gall torri canghennau sy'n bargodi dros yr adeilad helpu i leihau'r tebygolrwydd y caiff cafnau eu blocio gan ddail, a bydd hefyd yn caniatáu i fwy o aer gylchredeg o gwmpas yr adeilad.