EPS Sandwich Wall Panel High‑Temp Installation Precautions
Step 1: Pre‑project high‑temperature risk assessment 🔍 Eps sandwich wall panel is sensitive to sustained high ambient temperature. Confirm local maximum temperature range before installation. Long‑term environment above 65℃ will accelerate EPS foam contraction risk. For projects located in tropical desert or intense‑sunshine zones, SAMZOON can provide material adaptability evaluation for eps sandwich wall panel. Avoid using eps sandwich wall panel nearby heat‑generating equipment.
Step 2: Panel storage and hoisting protection under hot sun 📐 Store eps sandwich wall panel away from direct long‑time sunlight exposure on site. Prolonged solar radiation will cause pre‑shrinkage of EPS core before installation. Use sun‑shade covering for stacked panels. Do not leave eps sandwich wall panel unpacked under blazing sun for several days before hoisting. Handle panels with soft sling, prevent surface metal skin damage under high‑temperature thermal state.
Step 3: Reasonable thermal expansion‑contraction gap reservation 🛠️ Thermal shrinkage is the main hidden trouble for eps sandwich wall panel in high‑temperature environment. Reserve sufficient expansion‑shrinkage gap at vertical and horizontal joints according to local temperature difference. Zero‑gap tight installation will lead to extrusion deformation in high temperature, or obvious joint gaps after foam contraction. Do not copy installation gap parameters from temperate‑zone projects directly.
Step 4: Purlin system adjustment for high‑temperature working condition 📌 Check purlin flatness and spacing strictly. Eps sandwich wall panel will produce internal stress when temperature rises. Unlevel purlins amplify panel warping risk. Keep purlin spacing comply with design requirement, do not enlarge span. Ensure purlin system can adapt to dimension change of eps sandwich wall panel without forced constraint.
Step 5: Fastener tightening torque control 🛡️ Do not over‑tighten self‑drilling screws for eps sandwich wall panel in hot weather. Metal skin expands under high temperature; excessive torque will cause panel dent and local deformation. Keep EPDM rubber washer in good condition. Fastener points shall retain proper buffer capacity to absorb dimension variation of eps sandwich wall panel.
Step 6: Joint sealing and auxiliary gap‑filling treatment ⚙️ Clean joint groove completely before sealing eps sandwich wall panel. Choose high‑temperature‑resistant elastic sealant which can adapt to repeated expansion and contraction. Hard brittle sealant will crack quickly after eps sandwich wall panel deforms. Apply multi‑layer sealing structure, avoid only thin‑layer surface glue.
Step 7: Cutting edge protection for high‑temperature exposure ✂️ All cut ends of eps sandwich wall panel must be fully sealed. Exposed EPS foam under strong sunshine will accelerate aging and shrinkage from cross‑section inward. Complete edge sealing work timely after on‑site cutting, do not leave bare foam exposed under high‑temperature sunlight.
Step 8: Completion acceptance and post‑installation observation ✅ Check joint gap uniformity, panel flatness and sealing integrity after eps sandwich wall panel installation. Re‑inspect joints within several weeks under high‑temperature weather, observe whether contraction gaps appear. Timely repair abnormal positions.
Typical pitfalls to avoid: ‑ Store unpacked eps sandwich wall panel under continuous strong sunlight ‑ Adopt zero‑gap installation without thermal shrinkage reservation ‑ Over‑tighten screws when eps sandwich wall panel metal skin is in hot expanded state ‑ Use ordinary low‑temperature‑resistant sealant for high‑temperature projects ‑ Leave cutting cross‑section of eps sandwich wall panel exposed without sealing
