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
- Nap roller
- Waterproofing membrane
- Mastic sealer
- Insulation foam
- Utility knife
- Protection panels
- Paver pedestals
- Paver stones
- Measure the space to be paved based on the width and height of the pavers. Mark off the space.
- Clean the area. Remove excess dirt. Fill any cracks in the concrete with grout or other filler.
- Prime concrete that is completely dry. Apply the primer with a long nap roller. Allow to completely dry.
- Roll the waterproofing membrane across the area. Start from the lowest point to the highest. Seal all terminating edges with a bitumen mastic sealer.
- Place insulation foam with a compression rating of 60 psi or higher over the primed area.
- Cut foam to the desired size of the patio area. You can use a utility knife or any sharp blade to cut the foam.
- Lay protection board or panel on top of insulation. Cut to fit area with utility knife.
- 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.
- 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.
- 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.
- 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.