Hie Roof

冷えルーフ

“Hie Roof” , a metal folded-plate roof blocking sheet, is effective for reducing air conditioning costs and CO2 in order to suppress room temperature rise. Reduction of rain sound / relaxation of condensation / suppression of metal fatigue due to thermal expansion and contraction of roofing material, warm keeping of winter time, etc. are also fulfilled. It is a roof blocking heat system that can be constructed regardless of whether it is new or existing.

Hie Roof is a completely new idea shut-off system that utilizes the power of nature, cool in summer and warm in winter. Hie Roof constructed on the folded board roof creates shade and suppresses temperature rise of the folded board.

Construction Example is here.

Main effects of "Hie Roof"

Summer Season

Reduction of heat	“Hie Roof” constructed on the folded board roof creates a shade, shields the sunlight, and suppresses temperature rise of the folded board.
Suppression of heat storage	Since there is a hole in the blocking sheet, the wind passes and suppresses heat storage.
CO2 reduction	By installing “Hie Roof”, reducing the temperature rise reduces the amount of air conditioning used and leads to a reduction in CO2 emissions.

Winter Season

Suppression of decline	In the winter, temperature reduction is suppressed so that the surface of the roof does not become too cold at low temperature.
Heat retention effect	It protects the heat from indoors with a blocking sheet, and it also has an insulation effect.
Condensation relief	It realizes radiative cooling at night and dew condensation on the attic at the time of snow cover.

Whole year / Other

Heat retention effect	By receiving rain and hoarding on the seat of “Hie Roof”, the rain sounds striking the metal roof are reduced.
Suppression of heat storage	It also serves as a mitigation effect of kimimi sound due to thermal expansion and contraction of the folded plate roof. There is also the effect of protecting the building by covering with the seat.

Heat shielding countermeasure method comparison table

	Hie Roof	Heat-Proof Paint	Insulation Method	Roof Top Greening
Construction Area	About 80% or less of the roof area	150% or more of the roof area. (When the roof is folded board.)	Equivalent to the roof area	It is impossible to construct less than the roof area.
Construction Period (Per 1,000 m²)	About a day	5 days to 2 weeks (It depends on the weather)	2 – 3 days	2 days to 3 weeks (Depends on construction method)
Maintenance Cost	Almost free (5 year warranty)	Almost free	Almost free	Greening aintenance required Water handling / Weeding etc.
Roof Load	About 1〜5Kg / ㎡ (Sheet only 256ｇ / ㎡ )	Depending on the thickness of the paint, it is small compared to other methods.	It is impossible by the same weight load limit as the existing roof.	20 kg / ㎡ or more It is not possible Roof Load depending on load limit
Rain Sound	◎ It is considerably reduced.	△ It hardly changes.	◎ It is considerably reduced.	○ It is considerably reduced. （Work place）
Adiabatic Effect	◎ The effect lasts without diminishing.	○ It is effective if there is no dirt on the surface.	○ There is concern that heat will be trapped in the heat insulating material.	◎ It is highly effective at a construction site where plants are grown and moisture is contained in the soil.
Sustainability of Effect	◎It is not influenced by dirt on the surface of the roof, etc., which has the same effect as after construction.	△ Due to yellow sand, dust, fallen leaves, etc., the original effect may be affected.	◎ If heat does not stay in the air layer between the folded plates, the effect can be maintained. Metallic fatigue due to thickness is a problem.	◎ In the case where regular maintenance is not carried out, the effect may decrease.
Winter Season	◎ It has an effect of relaxing heat retention effect and condensation.	△ In winter, there is little effect.	○ The effect of keeping warmth is expected.	○ In winter, the effect by plants can not be expected much, but the effect of soil as insulation is seen in the soil part.
Uses as Repair / Protection	△ Because it is less likely to be affected by dirt and direct sunlight, the burden on the roof is reduced.	◎ Since the roof surface is painted, it can also protect the roofing material.	◎ Due to the temperature difference between the upper roof and the lower roof, metal fatigue of the joint portion occurs, and the roof may be damaged during strong wind. （Depends on construction method）	△ It is affected by bird damage, earth and dead leaves. Not only the roof but also the gutters and the like may be affected.

* Based on your own investigation.

Hie Roof - Business Contents