High-Risk Precision: Dismantling a Hypoxylon-Infected Ash Tree in New Braunfels

When a mature tree begins to die in close proximity to a home, the timeline for action contracts rapidly. That reality was on full display during a recent project in New Braunfels, Texas, where a massive Ash tree carrying a severe infection of Hypoxylon canker stood directly over a residential roofline and outdoor air conditioning unit.

Trees suffering from Hypoxylon canker present unique hazards. The fungal pathogen attacks stressed trees, rapidly decaying the structural wood and leaving limbs brittle, unpredictable, and prone to sudden collapse. Below is an inside look at how our team executed a 360-degree technical tree removal in New Braunfels without causing a single scratch to the home or surrounding property.

Phase 1: Evaluating the Target Area

The Threat: Heavy canopy limbs extending directly across the roof plane. With brittle wood caused by internal rot, a single fallen limb could easily punch through shingles and roof decking.

A standard "drop and chop" tree service cannot handle a situation like this. The branches extended completely over the home's roof, while the base of the tree sat in a tight yard zone right next to the home's exterior air conditioning condenser. Dropping unrigged limbs was out of the question—every single piece of timber had to be secured, cut, and lowered under complete physical control.

Phase 2: Diagnosing Hypoxylon Canker

Hypoxylon canker manifests as dark, crusty fungal mats under sloughing bark, signaling advanced internal sapwood decay.

During our initial hazard assessment, the trunk confirmed our suspicions: a prominent, crusty tan-and-gray fungal mat running up the bark face.

Hypoxylon canker is an opportunistic fungal disease common across Central Texas. It latches onto hardwood trees already weakened by drought, heat stress, or root compaction. Once the fungus establishes itself beneath the bark, it rapidly destroys the sapwood, depriving the upper canopy of water and causing the wood to become extremely weak and glassy.

Because infected wood loses its structural elasticity, climbing an infected tree requires extreme caution and specialized arborist rigging techniques.

Phase 3: High-Climbing & Controlled Rigging

Precision in Action: Setting overhead friction rigging points high in the canopy to balance and control heavy wood sections over delicate structures.

Using advanced climbing lines and high-strength rigging pulleys, our climber worked piecemeal from the top down. Each limb overhanging the roof was bound with lowering lines before the chainsaw cut was made.

Our ground crew managed the friction brake system below, guiding heavy wood sections safely away from the shingles, gutter lines, and fence, landing every section gently inside a designated drop zone in the turf.

Phase 4: The "Pristine Clean" Result

Job Complete: The hazardous canopy is gone, the AC unit sits untouched, and the site is raked clean to our signature standard.

By dismantling the tree piece by piece, we eliminated a major hazard without causing a single point of impact to the customer's home or utilities. The air conditioning unit remained completely untouched, and the yard was raked clean of all saw dust, twigs, and debris.

Whether you need routine tree trimming in New Braunfels or a complex, high-hazard hazardous tree removal over structures, choosing an arborist team equipped with the proper rigging gear and insurance coverage makes all the difference.