should be fine, but I guess they are coming from holes in the wall behind, so you might find the draughts come through elsewhere. If there's any way of blocking the holes at source, it would be a lot better.
If it's behind the sink, you can get there easily.
a smoke stick would prbably help, especially on a cold/windy day.
If you need to find a tradesperson to get your job done, please try our local search below,
or if you are doing it yourself you can find suppliers local to you.
Select the supplier or trade you require, enter your location to begin your search.
Please select a service and enter a location to continue...
Are you a trade or supplier? You can create your listing free at DIYnot Local