Many people worry that after cutting slots on EPS Cement Sandwich Panel for wiring and plumbing, the thermal insulation performance of the wall will be damaged, leading to higher air conditioning energy consumption in summer and winter. This concern is very reasonable for some low-quality wall panels, but for qualified EPS Cement Sandwich Panel, the impact of slotting on thermal insulation performance is almost negligible, and it still delivers far better energy saving effect than traditional brick walls.
The high density EPS core inside the panel is one of the best thermal insulation materials in the world, with extremely low thermal conductivity. Even after you cut a 20mm deep slot on the panel surface, the remaining EPS material still forms a continuous thermal insulation layer that prevents heat transfer. After you fill the slot with cement putty, the small area of filled material only accounts for less than 5% of the total wall area, so it will not create any obvious thermal bridge that causes heat loss. Actual energy consumption tests show that a house built with EPS Cement Sandwich Panel after full slotting and wiring still consumes 30% less energy for air conditioning and heating than a same size house built with 200mm thick brick walls. The panel also prevents condensation on the wall surface in cold winter, because the whole wall maintains a more even temperature, no cold spots that gather moisture. This means after you finish all the hidden water and electricity work on the panel, you can still enjoy all the energy saving benefits that this panel brings, reducing your long term household electricity bill for decades.
