Emergency roof repair

01 — THE TEMPORARY FIX

Tarping an active leak

FEMA guidance identifies tarping as the correct interim repair for storm-damaged roofs. The tarp must extend at least four feet beyond the damaged area on all sides to shed water away from the opening.

The upper edge of the tarp should tuck under undamaged shingles above the breach. This prevents water from flowing under the tarp. Secure the tarp with screw-down battens (1x3 or 2x4 lumber strips screwed through the tarp into the roof deck), not just sandbags or staples.

Sandbags alone can shift in subsequent wind. Staples tear through tarp material. Battens distribute the holding force and resist wind uplift.

02 — SAFETY FIRST

When to stay off the roof

Roof work is dangerous in ideal conditions. After storm damage, it is more dangerous. Wet surfaces, weakened decking, loose debris, and broken trusses all increase fall and collapse risk.

Do not go on a roof during active weather, in darkness, or on surfaces that feel soft or springy underfoot. A springy surface may indicate structural damage to the decking or trusses beneath.

If the damage is extensive or the roof structure feels compromised, place tarps from below if possible (over the ceiling inside) and call a professional. Document the damage with photographs from the ground for your insurance claim.

03 — MATERIALS TO KEEP ON HAND

Pre-storm preparation

A heavy-duty blue tarp (minimum 6-mil thickness, sized for your roof pitch), a box of 3-inch wood screws, several 8-foot 1x3 or 2x4 lumber strips for battens, a cordless drill with a charged spare battery, and a utility knife.

Keep these materials stored and accessible before storm season. Buying a tarp after a major storm means competing with every other damaged household in the area.

A roll of self-adhering roof repair tape (butyl-based) is useful for smaller punctures and flashing failures where a full tarp is not needed.