172+ Flat Roof Archicad

www.pinterest.com

Here's a step-by-step DIY guide for creating a simple flat roof, suitable for a small structure like a shed or dog house. Remember that for larger or permanent structures, you should consult with a qualified engineer or builder to ensure structural integrity and compliance with local building codes. This guide is for illustrative purposes only.

Opening: Planning Your DIY Flat Roof

Before you start building, it's essential to plan. This involves determining the size and shape of your roof, selecting materials, and considering drainage. A perfectly flat roof will pool water, so you need a slight slope.

Step 1: Measuring and Framing

Measure the perimeter of the structure you are roofing. This will determine the length of your joists and support beams.

Cut the lumber for your support beams and joists according to your measurements. Remember to add a slight overhang if desired.

Assemble the support beams along the perimeter of your structure. Secure them firmly to the walls, using appropriate fasteners.

Step 2: Installing the Joists

Space the joists evenly across the support beams. A spacing of 16 inches on center is common, but consult building codes for your area.

Attach the joists to the support beams using nails, screws, or metal joist hangers for added strength. Ensure they are level and securely fastened.

To create a slight slope for drainage, consider using tapered shims or varying the height of the joists slightly. Aim for a drop of at least 1/4 inch per foot.

Step 3: Sheathing the Roof

Cut plywood or OSB sheathing to fit the joist framework.

Attach the sheathing to the joists using screws or nails. Ensure the sheathing is securely fastened and that the edges are supported by the joists.

Stagger the seams of the sheathing for added strength and to prevent weak points.

Step 4: Waterproofing the Roof

Apply a layer of roofing underlayment, such as felt paper or synthetic underlayment, over the sheathing. Overlap the edges by several inches and secure with roofing nails.

Install a waterproof membrane. Options include modified bitumen roofing, EPDM rubber roofing, or TPO roofing. Follow the manufacturer's instructions for installation, as methods vary depending on the material.

Pay close attention to seams and edges, ensuring they are properly sealed to prevent water leaks.

Step 5: Adding Finishing Touches and Drainage

Install flashing around any penetrations, such as vents or chimneys, to prevent water intrusion.

Add a drip edge along the perimeter of the roof to direct water away from the structure.

If necessary, install a roof drain or scupper to channel water away from the roof surface. Ensure the drain is properly connected to a downspout or drainage system.

Conclusion: Enjoy Your DIY Flat Roof

You've now completed a simple flat roof! Remember to regularly inspect your roof for any signs of damage or leaks and address them promptly to prevent further problems. Proper maintenance will extend the lifespan of your roof and protect your structure. If you're unsure about any step, consult with a professional.

How To Create And Detail Roof Structure In Archicad For Beginners Tutorial.

www.pinterest.com

How To Create Roof Framing With Archicad Roof Wizard

www.contrabim.com

Autocad 3d House

www.pinterest.com

Share this