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How to Install Paving Stones on the Roof of Your House

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Credit: https://flic.kr/p/agaRyz

Building a paved rooftop patio is a great way to create extra space. You can use paving stones for this purpose, but to make the patio a long-lasting space you need to follow a process. Before laying the stone pavers, measure the area with accuracy. Make sure it is also waterproof and insulated. Rooftop patios are becoming increasingly popular, and a number of products are on the market to make the process easier. However, every rooftop presents unique challenges. 

Things You'll Need:

  • Measuring tape
  • Concrete crack filler
  • Primer
  • Nap roller
  • Waterproofing membrane
  • Mastic sealer
  • Insulation foam
  • Utility knife
  • Protection panels
  • Paver pedestals
  • Paver stones


  1. Measure the space to be paved based on the width and height of the pavers. Mark off the space.
  2. Clean the area. Remove excess dirt. Fill any cracks in the concrete with grout or other filler.
  3. Prime concrete that is completely dry. Apply the primer with a long nap roller. Allow to completely dry.
  4. Roll the waterproofing membrane across the area. Start from the lowest point to the highest. Seal all terminating edges with a bitumen mastic sealer.


  1. Place insulation foam with a compression rating of 60 psi or higher over the primed area.
  2. Cut foam to the desired size of the patio area. You can use a utility knife or any sharp blade to cut the foam.
  3. Lay protection board or panel on top of insulation. Cut to fit area with utility knife.


  1. Cut one paver pedestal into quarters using a utility knife. Arrange one quarter of the pedestal at the corner of the place where you are going to put the first paver.
  2. Cut one pedestal in half using a knife. Measure the width and height of one paver. Place each half along the edge of the area at a proper distance based on the size of the paver.
  3. Situate a complete pedestal at the opposite corner of the quartered pedestal at the right distance based on the size of the paver. Place paver in the configured pedestals.
  4. Repeat the process using proper pedestal configurations. Continue until you have covered the entire area.


Pavers will add to the weight of a building. They will also alter the drainage of a roof. Consult an architect, landscape architect, and/or structural engineer before beginning this project.



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  1. "10-Step Guide to Installing Pavers." Oregon State University Extension Service. 26/10/2015 <Web >

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