What should you place under the floor to prevent rats? - briefly
Place a «stainless‑steel mesh barrier», such as hardware cloth, beneath the floor to block rodent intrusion. Seal all seams and openings with rodent‑proof caulk to maintain an uninterrupted seal.
What should you place under the floor to prevent rats? - in detail
A durable rodent‑proof barrier is the most effective measure beneath a floor. Metal mesh with openings no larger than ¼ inch blocks entry, resists gnawing, and can be fastened to joists or concrete slabs. Steel‑reinforced concrete slabs provide a solid, non‑permeable base; cracks must be filled with epoxy or hydraulic cement before installation. Heavy‑duty hardware cloth, welded to the subfloor frame, offers a flexible yet strong solution, especially in retrofit situations where full concrete pours are impractical.
Sealing all penetrations is essential. Apply rodent‑grade caulk around pipe sleeves, vent openings, and utility conduits. Insert steel wool or copper mesh into small gaps before caulking to create a dual barrier. Install moisture‑resistant, pest‑inhibiting insulation—such as mineral wool—directly on the subfloor; its dense composition deters nesting and reduces food sources.
A layered approach maximizes protection:
- Primary layer: concrete slab or metal mesh attached to structural members.
- Secondary layer: hardware cloth or steel‑reinforced sheathing over the primary barrier.
- Tertiary layer: sealed gaps with caulk and steel wool, followed by pest‑inhibiting insulation.
Regular inspection of the barrier surface detects damage early. Replace compromised sections promptly to maintain integrity. Combining rigid barriers, sealed openings, and deterrent insulation creates a comprehensive defense against rat intrusion beneath flooring systems.