# Waterproofing Penetration Plinths ### Issue Image: ![[Pasted image 20241121115109.png]] ![[Pasted image 20241112164005.png]] ## Issue Description: - Rooftop penetrations shall be raised up of Concrete decks with in-situ Concrete Plinths. - This greatly increases the efficacy of the waterproofing. - See [TOOLS](https://app.buildingtools.co/tools/waterproofing-external-roof-slab-penetrations?shareId=mnjaOC-1731389964752&menu_id=9-1-6-2) for a link to the image above. ## Actions to Prevent this Issue: - [ ] Architect to check that these plinths are detailed on the Architectural CSPs.