Diffused light is a soft light with neither the intensity nor the glare of direct light. The light is scattered when passing through diffusers and naturally diffusing materials such as GRP and avoids glare and harsh shadows giving a more even spread of light throughout the building. Diffused daylight is always recommended as the best option for rooflighting unless there is a requirement for a clear uninterrupted view through the rooflight. Diffused light can be anything from quite lightly diffused delivering an identifiable amount of light spread, up to heavily diffused where the light distribution is so widely scattered that its limits are difficult define.