Blocked guttering is one of those ‘out of sight out of mind’ type things that is until water begins to pour down the wall of your house or damp patches appear on the ceiling.
Most household insurance policies contain standard terms and conditions requiring the household to keep the property in good repair. If you don’t do this then your insurance company may try and avoid payment if you make a claim for damage to the fabric of your home for which you are partly responsible. They are perfectly within their rights to do this. Your claim could be reduced in terms of payout or possibly even rejected completely. So if you have a small forest sprouting in your guttering or are offering a home to several different species of animals and birds then it just could be time to do something about it.
Traditionally, cleaning gutters has always been done in spring and autumn but global warming has rather mucked about with the conventional seasons so you may need to do it more frequently. Leaf drop can be early or late now dependent on temperatures and summer storms often result in flash flooding right at the time of year when the birds are nesting so year-round vigilance is crucial.
Sure signs your gutters are blocked
You may not be able to see clearly but there are some telltale signs that your gutters are not doing the job they were installed for (as recommended by https://www.plasticbuildingsupplies.com/pvc-guttering-round-square-ogee)
When it rains heavily you notice water spilling over the side of the gutters
You see birds or other animals paying particular attention to a certain section of the gutter; during prolonged dry periods, birds will nest in sheltered guttering near the cover of trees
The gutter sags in places
There are watermarks or stains on the external walls particularly after heavy rain or worse still, internal damp patches appearing
Plants are visible growing in your gutters