Mega Block - Hydrophobic Foam + Heat Shield
Keep your cabin cool with Mega Block, specifically designed to be a best-in-class heat shield by combining an aluminum reflective barrier with the excellent automotive heat insulation attributes of melamine foam. Mega Block is hydrophobic, lightweight, and flexible while reflecting 98% of radiant heat energy. Use it on the engine side of the firewall, as hood insulation, or any vehicle needing heat control including engine compartment insulation for your boat.
- 0.5 inch thick hydrophobic melamine foam with an aluminum foil-faced composite bonded on top
- Lightweight, flexible, water resistant, and Class A fire rated
- Reflects 98% of radiant energy
- Each sheet is 24” x 24” (4 Sq Ft) and weighs about 1/2 of a pound
- Thermal range: -40 F to 1000 F
- Resists organic solvents, odor free, and meets smoke, fire, and toxicity standards
- Aerospace grade foam and heat shield (R-value per inch: 4.16)
- Made in Germany with hydrophobic process completed in the USA
Product Usage
- Always face foil side of the product towards the heat source
- Easy to apply with our peel & stick adhesive backing. You need to apply enough pressure for your fingers to "feel" the adhesive bonding to the metal surface.
- Install at least 2” from the heat source. We recommend foil insulation tape on the edges to protect the foam.
- Used in non-automotive locations as well, like generator boxes or a soundproof server rack
- Hood - cover entire lid with foil facing the engine
- Firewall - engine side
- For rear-engine design layouts, apply to the vehicle's back wall.
Flammability Ratings: |
Description: |
Rating: |
UL 94 HF-1 |
Horizontal Burning |
Pass |
UL 94 V-0 |
Vertical Burning |
Pass |
FAR 25.853 (a, i) |
60 Sec Vertical |
Burn Time (Avg): 0 Seconds
Burn Length (Avg): 2”
Drip Extinguish Time: No Drip
|
FAR 25.856, BSS7365, AITM 2.0053 |
Radiant Panel |
After Flame: 0 Seconds
Flame Propagation: < 1”
|
ASTM 662-83, BSS7238 |
Smoke Generation |
Flaming: Ds (1.5 min) = 57
Ds (4.0 min) = 77
|
BSS7239 |
Toxicity |
Pass |
ASTM E 84 |
Steiner Tunnel, 1inch thick |
Flame Spread < 25
Smoke Developed < 50
|
ASTM E 162-83 |
Surface Flammability |
Flame Spread factor 1.83
Heat Evolution factor 2.50
Flame Spread index 4.62
|
DIN 5510 |
|
Flammability: S4
Smoke: SR2
Drips: ST2
|
Foil Heat Shield Specifications
Base Fabric Type: |
Plain Weave Fiberglass |
Aluminum Foil thickness: |
0.001 inches |
Composite Characteristics: |
|
Thickness (ASTM-D1777-96): |
0.02” (Nominal) |
Weight (ASTM-D-3776-96): |
0.1225 lb/sft (Typical) |
Tensile Strength:(ASTM-D-5035-95): |
Warp-75 lb/in |
|
Fill- 50 lb/in |
Flame Resistance (FED 191/5903-2): |
|
Flame Out |
1 sec max |
Afterglow |
1 sec max |
Char Length |
1 inch max |
Temperature Range: |
|
Composite |
*-40°F to 1,000°F |
1000°F requires 2” between the
heat shield and the heat source
|
*PSA Temperature Range:
-40°F to 450°F
|
Acoustical Properties
ASTM E1050 testing method used to record acoustical absorption coefficients at various thicknesses and frequencies.
Frequency (Hz)
Foam Thickness: |
125 |
250 |
500 |
1000 |
2000 |
4000 |
0.25 in. |
4 |
5 |
10 |
20 |
39 |
81 |
0.50 in. |
11 |
12 |
25 |
42 |
77 |
94 |
1.0 in. |
18 |
23 |
50 |
82 |
99 |
99 |
2.0 in. |
31 |
60 |
75 |
90 |
100 |
100 |
3.0 in. |
42 |
67 |
81 |
96 |
100 |
100 |
4.0 in. |
53 |
80 |
90 |
99 |
100 |
100
|