How to Weave a Roof

Use locally-sourced materials to build your roof.

Green building is a great alternative to the standard resource-intensive construction process common in industrialized countries. In tropical parts, coconut palm fronds are an abundant renewable resource that can be utilized in roof construction. Native cultures have passed down the knowledge of weaving "green" thatch roofs for generations. Weaving a roof with locally-sourced materials is an effective building form that will save you money and lighten the impact on the environment because it uses renewable materials.

Things You'll Need

• Coconut palm fronds
• Knife

Instructions

1. Split your fronds along the spine into halves with a sharp knife. Cutting them in half allows the thatch to fasten together better and sit more evenly on the roof.

2. Locate the frond stem's first leaflet. Count up 5 leaflets and bend that fifth leaflet in the opposite direction. Weave the fifth leaflet over the fourth, then under the third. Continue this weaving pattern.

3. Count up 2 leaflets, and repeat Step 2 with this leaflet. Repeat Steps 2 and 3 with the other half of the palm frond, but in reverse.

4. After weaving every 8 to 10 leaflets, pick out a spot where 2 leaflets overlap. Bend and break the spine of the top leaflet over the second leaflet's spine. Use a knife to carefully make this cut. Stick the broken leaflet's spine into the underlying leaflet to create a hook that can be used to anchor the leaflets together. This ensures that the fronds do not become loose during transportation or installation.

5. Bend the ends of the palm thatch at the end of each panel into a linear arrangement. Then bend the ends again to make a thick plug that can be inserted into the intersections of the woven leaflets.

Tips & Warnings

• Open the palm leaflets fully when weaving. Leaving them closed can cause a leaky roof.

• Do not be concerned about using brittle, insect-bitten leaflets. Weave these into the thatch as you normally would. The final product will be strong enough to avoid leaks.

References

• The Sabah Architectural Heritage Blog: How To Weave A Thatch Roof From Coconut Palm Fronds

Resources

• "Thatching and Thatched Building" Michael Billett; 1998