How To Install A Dpc The Builder Didnt Install A Dpc Under The Wooden Sill Of My New Garage Door, Is This A Problem?

The builder didnt install a dpc under the wooden sill of my new garage door, is this a problem? - how to install a dpc

I had recently built a conservatory and the new conservatory is blocking access to the existing garage door into the garden, so that the greenhouse was built, has a constructor to insert a new door into a wall. 2 months later, I realized that there was no DPC below the threshold of the wooden door. I spoke with the contractor and asked him and he said he did not need ...... DPC