Ecologica NestStop is a humane deterrent for an apex roof just below the ridge where migrant birds e.g. House Martins, Swallows or Swifts potentially build their nests during the Spring/Summer period.
NestStop is made from clear polymer (plastic) thus transparent against natural stone or a painted wall surface. The birds build their nests with a mud structure which sticks to the wall surface. The installation of NestStop mitigates against the birds getting to build their nests due to the clear smooth plastic surface thus preventing the mud sticking to the smooth plastic NestStop and the birds building a nest at that point in the roof apex.
Secured with strong adhesive glue tabs or screws to the fascia. When fitted your issue of nesting birds in the roof apex is solved for years to come.