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Radiant Barrier

what is more effective to keep my attic roofcooler exhaust fan or radiant barrier foils?

have a big problem with heat build up in my attic and my 2nd floor is always hot when it is sunny and on rainy days its okay . So i know it the heat build up in the roof. So would it be cooler installing a roof exhaust fan or installing radiant barrier foils ?

You need to look at the ventilation before you do anything else. Most attics ventilate by convection. Hot air exits through ridge vents, gable vents, etc., which allows cooler air to be drawn up through the soffit vents (under the eaves). If you have a gable roof you can have a fan installed in one gable that will pull air through from the other gable. If you don't have a gable roof you need to be sure you add enough exit ventilation. You can do that by having a roofer install ridge vents or turbines, which are considered passive. Or, you can have a powered ventilator or two installed which will pull air up out of the attic. Those are active systems. Either way, you've got to have enough fresh air entering the attic to replace what's being drawn out. That's what causes the cooling. BTW, in the winter the ventilation should not be blocked because that's what keeps moisture from building up in the attic and insulation.

Find Radiant Barrier On eBay Below:

The Barrier Insulation High Performance Under Concrete Radiant Floor Insulation
The Barrier Insulation High Performance Under Concrete Radiant Floor Insulation
$255.00
Enerflex 10 Box 16 in x 4 ft Radiant Barrier Easily Installs in Attics
Enerflex 10 Box 16 in x 4 ft Radiant Barrier Easily Installs in Attics
$40.39
Double Reflective Radiant Barrier Insulation Durable Lightweight 24 x 100
Double Reflective Radiant Barrier Insulation Durable Lightweight 24 x 100
$93.99
Radiant Barrier Double Reflective Insulation 24 in x 100 ft Roll Durable Home
Radiant Barrier Double Reflective Insulation 24 in x 100 ft Roll Durable Home
$98.99
RB4812550 48x125 Radiant Barrier
RB4812550 48x125 Radiant Barrier
$78.68
36Sqft One Layer Aluminum Foil Radiant Barrier Insulation Reflective 108x48
36Sqft One Layer Aluminum Foil Radiant Barrier Insulation Reflective 108x48
$35.23
24sqft Attic Garage Door Caravan Heat Insulation Foil Radiant Barrier 72x48
24sqft Attic Garage Door Caravan Heat Insulation Foil Radiant Barrier 72x48
$31.15
Double sided Sheet Radiant Barrier Panel Summer Blocks Solar Heat 16x4ft 50
Double sided Sheet Radiant Barrier Panel Summer Blocks Solar Heat 16x4ft 50
$151.14
Heavy Duty Woven Radiant Barrier Attic Insulation House Wrap 125 ft Roll
Heavy Duty Woven Radiant Barrier Attic Insulation House Wrap 125 ft Roll
$92.95
Single Bubble Aluminum Foil Reflective Material Radiant Barrier Durable 12x48
Single Bubble Aluminum Foil Reflective Material Radiant Barrier Durable 12x48
$11.19
ARMA FOIL Radiant Barrier Reflective Insulation 51 wide 500 sqft Attic
ARMA FOIL Radiant Barrier Reflective Insulation 51 wide 500 sqft Attic
$84.95
ARMA FOIL Radiant Barrier Reflective Insulation 255 wide 500 sqft Attic
ARMA FOIL Radiant Barrier Reflective Insulation 255 wide 500 sqft Attic
$69.50
ARMA FOIL Radiant Barrier Reflective Insulation 51 wide 500 sqft Attic
ARMA FOIL Radiant Barrier Reflective Insulation 51 wide 500 sqft Attic
$69.95
ARMA FOIL VB Radiant Barrier Reflective Insulation 17 wide 333 sqft Non Perf
ARMA FOIL VB Radiant Barrier Reflective Insulation 17 wide 333 sqft Non Perf
$50.00
ARMA FOIL Radiant Barrier Reflective Insulation 51 wide 1000 sqft Attic
ARMA FOIL Radiant Barrier Reflective Insulation 51 wide 1000 sqft Attic
$148.50
Single Bubble Radiant Barrier Insulation Foil Bubble Foil 48 x 125ft  500 sqft
Single Bubble Radiant Barrier Insulation Foil Bubble Foil 48 x 125ft 500 sqft
$157.50
ARMA FOIL VB Radiant Barrier Reflective Insulation 51 wide 1000 sqft Non Perf
ARMA FOIL VB Radiant Barrier Reflective Insulation 51 wide 1000 sqft Non Perf
$130.00
ARMA FOIL VB Radiant Barrier Reflective Insulation 255 wide 500 sqft Non Perf
ARMA FOIL VB Radiant Barrier Reflective Insulation 255 wide 500 sqft Non Perf
$77.50
2000 sqft Diamond Radiant Barrier Solar Attic Foil Reflective Insulation 2 rolls
2000 sqft Diamond Radiant Barrier Solar Attic Foil Reflective Insulation 2 rolls
$154.88
3000 sqft Diamond Radiant Barrier Solar Attic Foil Reflective Insulation 4x250
3000 sqft Diamond Radiant Barrier Solar Attic Foil Reflective Insulation 4x250
$229.99
5000 sqft Diamond Radiant Barrier Solar Attic Foil Reflective Insulation 4x250
5000 sqft Diamond Radiant Barrier Solar Attic Foil Reflective Insulation 4x250
$379.99
RADIANT BARRIER DOUBLE D PLATINUM 500 SQ FT 48 X 125 MADE IN US
RADIANT BARRIER DOUBLE D PLATINUM 500 SQ FT 48 X 125 MADE IN US
$70.00
RADIANT BARRIER DOUBLE D PLATINUM 1000 SQ FT 48 X 250 MADE IN US
RADIANT BARRIER DOUBLE D PLATINUM 1000 SQ FT 48 X 250 MADE IN US
$114.00
RADIANT BARRIER DOUBLE D SILVER 500 SQ FT 48 X 125 MADE IN US WHOLESALE
RADIANT BARRIER DOUBLE D SILVER 500 SQ FT 48 X 125 MADE IN US WHOLESALE
$56.00
Heavy Duty Radiant Barrier Insulation Aluminum Foil 1000 Sqft 4x250 perforated
Heavy Duty Radiant Barrier Insulation Aluminum Foil 1000 Sqft 4x250 perforated
$134.44
Heavy Duty Radiant Barrier Insulation Aluminum Foil 500 Sqft 4x125 perforated
Heavy Duty Radiant Barrier Insulation Aluminum Foil 500 Sqft 4x125 perforated
$72.88
500 sqft Super Shield NASA Tech Ultra SCIF RIFD Blocking Radiant Barrier 4x125
500 sqft Super Shield NASA Tech Ultra SCIF RIFD Blocking Radiant Barrier 4x125
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1000 sqft Super Shield NASA Waterproof Commercial Grade Radiant Barrier 4x250
1000 sqft Super Shield NASA Waterproof Commercial Grade Radiant Barrier 4x250
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48 x 24 Blanket Type Radiant Barrier Recycled Thermal Acoustical Insulation
48 x 24 Blanket Type Radiant Barrier Recycled Thermal Acoustical Insulation
$94.83
189x94 Reflective Double Insulation Foil Bubble Car House Radiant Foil Barrier
189x94 Reflective Double Insulation Foil Bubble Car House Radiant Foil Barrier
$55.99
50sqft Single Bubble Foil Insulation radiant barrier heat absorption 180 x48
50sqft Single Bubble Foil Insulation radiant barrier heat absorption 180 x48
$46.60
foil wrap radiant barrier
foil wrap radiant barrier
$55.60
Double Bubble Radiant Barrier Foil DB Foil 48 x 125ft  500 sqft LOCAL PICKUP
Double Bubble Radiant Barrier Foil DB Foil 48 x 125ft 500 sqft LOCAL PICKUP
$149.95
foil wrap radiant barrier
foil wrap radiant barrier
$55.60
750 sqft Radiant Barrier Attic Foil Reflective Insulation 4x1875 Perforated
750 sqft Radiant Barrier Attic Foil Reflective Insulation 4x1875 Perforated
$115.88
1250 sqft Radiant Barrier Attic Foil Reflective Insulation 4x3125 Perforated
1250 sqft Radiant Barrier Attic Foil Reflective Insulation 4x3125 Perforated
$138.88
100 sqft Radiant Barrier Attic Foil Reflective Insulation 4 x25 Perforated
100 sqft Radiant Barrier Attic Foil Reflective Insulation 4 x25 Perforated
$24.88
200 sqft Radiant Barrier Attic Foil Reflective Insulation 4 x50 Perforated
200 sqft Radiant Barrier Attic Foil Reflective Insulation 4 x50 Perforated
$39.88
250 sqft Radiant Barrier Attic Foil Reflective Insulation 4 x50 Perforated
250 sqft Radiant Barrier Attic Foil Reflective Insulation 4 x50 Perforated
$43.88
Reflectix 48 in x 125 ft Heavy Duty Perforated Radiant Barrier Attic Insulation
Reflectix 48 in x 125 ft Heavy Duty Perforated Radiant Barrier Attic Insulation
$85.59


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