Carpenter bee damage to deck — Barcelona, Catalonia
Carpenter bees bore perfectly round half-inch holes into untreated wood, creating tunnels up to ten inches deep where they lay eggs. Over several seasons, repeated nesting weakens deck boards, fascia, railings, and pergola beams — the structural damage compounds because daughters return to the same tunnels and extend them. Sawdust piles below the holes and yellowish staining from bee excrement are telltale signs. A pest control technician can treat active galleries with residual insecticide dust, seal entrance holes after the brood cycle completes, and recommend surface treatments or wood replacement to prevent reinfestation.
Who to call
For this problem in Barcelona, call a: Ongediertebestrijder
Vind een Ongediertebestrijder in BarcelonaSymptoms to look for
- Perfectly round half-inch holes in deck boards, fascia, or pergola beams
- Small piles of coarse sawdust on surfaces below the holes
- Large bees hovering aggressively near the deck in spring
- Yellowish-brown staining on wood below tunnel entrances
- Woodpecker activity on the deck — they peck at wood to reach carpenter bee larvae inside
Spoeddienst in Barcelona
Emergency services in Barcelona respond within 30–75 minutes in the central districts (faster in l'Eixample and Gràcia, slower in the upper hillside neighbourhoods). Callout rates run €60–€150 plus €45–€80/hour including IVA — among the highest in Spain alongside Madrid. Confirm the contractor is a registered instal·lador autoritzat with the Generalitat before granting entry, especially for heritage-building work.