Dynamat Xtreme Mega Pack (Nine 61x122cm Sheets)

In stock

Dynamat Xtreme Mega Pack (Nine 61x122cm Sheets)

JK Part Number: J27788


Purchase Information

Availability: in stock
Delivery: Mainland UK Only. For overseas and international shipping call +44 (0)1256 862288


Quality Dynamat product. Great value Dynamat Mega Pack. Contains nine 61x122cm sheets of Dynamat Xtreme, giving 6.6m² coverage. Dynamat is a thin, flexible, easy to cut and mould sheet, that stops noise causing resonance and vibration by using visco-elasticity that promotes vibro-acoustic energy conversion. In short, this is a great quality sound proofing agent!

You can apply Dynamat in patches (25-50% area coverage) to keep a specific panel from resonating or you can apply it over an entire area (such as the floor, doors, or trunk) to create a sound barrier and vibrational damper.
Even a small amount of Dynamat can cause a profound noise reduction. For example, applying Dynamat to the doors of your vehicle can reduce road noise from 3-6dB.
Complete coverage of an average vehicle can reduce road noise 9, 12 even as much as 18dB!
We recommend applying Dynamat to any surface you can easily reach such as the doors, inner rear panels, bulkheads, floors, inner roof, nose panel or under the bonnet. 
Installing Dynamat requires only a few tools:   razor knife or scissors, roller tool, rags and a solvent- based cleaner (rubbing alcohol also works). You also need basic hand tools for the disassembly and reassembly of your vehicle.

Dynamat Xtreme is a patented, lightweight elastomeric butyl and aluminum constrained-layer vibrational damper. Dynamat Xtreme conforms and fuses easily to sheet metal and other hard substrates. Material performance is optimized for temperature ranges between 14°F and 140°F (- 10°C to +60°C). Material can withstand temperature extremes between -65°F and +300°F (-54°C to +149°C) and is highly resistant to aging.
Acoustic Properties:
The acoustic loss factor "n" is used as a measure of a material's ability to damp structure-borne sound by stating how much vibrational energy (in steel sheets for instance) is converted to heat rather than sound. For constructions containing several layers of damping material, the combined loss factor "n comb" is used. The theoretical maximum loss factor is 1 (no vibration). An undamped 1mm thick steel panel has a loss factor of roughly 0.001 at 200 Hz. Dynamat Xtreme applied to that panel would increase the loss factor to 0.417 @ +20°C (+68°F). Multiple layers of Dynamat Xtreme improve sound damping even more.
Dynamat Xtreme can be die cut to shape and placed onto the body surface directly on painted panels or after the sheet metal is cleaned before painting (typically at the sealer application operation).
Use scissors, knife or die to cut Dynamat Xtreme to the desired size and shape before removing the release liner. Next, remove dust, grease, moisture, and other foreign matter from the application surface. Peel off the release liner. The simplest application technique is to bend the mat slightly and attach it along its shortest edge. Press the mat firmly into place, using a roller for larger pieces. The roller reduces the risk of leaving air pockets, which reduce Dynamat's sound damping capacity. The temperature of the mat and application surface should not be below room temperature during fitting. Heating the material is not necessary.

Black butyl based core with 4 mil aluminum constrain layer, craft paper release liner
0.067" (1.7mm)
0.45lb./ft2 (2.20kg/m2)
Acoustic Loss Factor @ Temperature (Using ASTM method E756@ 200 Hz):
0.081 @ +14F (-10C)
0.240 @ +32F (+0C)
0.257 @ +50F (+10C)
0.417 @ +68F (+20C)
0.259 @ +86F (+30C)
0.194 @ +104F (+40C)
0.140 @ +122F (+50C)
0.094 @ +140F (+60C)
Temperature Range (Optimal performance):
  14°F to+140°F (-10°C to +60°C)
Temperature Range (Resistance):
-65°F to +300°F (-54°C to +149°C )
Chemical Resistance:
Resistant to water and mineral oils
Adhesive Peel Strength (Bond strength):
42.6 lbs/inch (74.8N/cm) on cold steel
Federal Standards Tests:
FMVSS 302 Meets
Handling and Application:
Store material at room temperature for best application
Storage Information:
Number of sheets in stack: 50 maximum

Finance Available on This Product Yes
Deposit 0.0
Width (CM - Packed) 64.0
Height (CM - Packed) 136.0
Depth (CM - Packed) 4.0
Shipping To Mainland UK Only Yes
Manufacturer Dynamat
Additional Carriage Charge 0.0
Special Order Lead time 0

Customer Reviews (1)

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  • Superb Results

    Very satisfied with the results of the Dynamat, easy to apply and would not hesitate recommending this product.

    by Markendeb on 27/11/2014

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Questions & Answers (5)

Ask a question
    • Gigi said: 29/09/2013 22:07
    • Hello,
      This pack is ok for covering all my baywindow? Thank you
    • Answer: This would cover most of it but if you wanted to do it all you would need a couple of these .
    • Do you find this question helpful?  Yes   No
    • Wilsonwilson said: 07/08/2014 16:25
    • How well would this stick to a vehicle that has had its panels waxoiled?
    • Answer: Hello. The waxoyl would need to be removed I'm afraid for the dynamat to stick properly
    • Do you find this question helpful?  Yes   No
    • Mark said: 23/08/2014 21:14
    • Hi, do I need to put insulation in with this too?
    • Answer: Yes, this is a sound barrier.
    • Do you find this question helpful?  Yes   No
    • Sarah Hendry said: 02/11/2015 09:37
    • How many packs would I need to cover a swb T5 for sound deadening?
    • Answer: You'd be looking at 3 to 4 packs depending on how far you want to go.
    • Do you find this question helpful?  Yes   No
    • darren said: 14/11/2016 18:40
    • How many packs of the larger mats (61x122cm) would I need for a lwb T5
    • Answer: For full coverage Dynamat suggest enough to cover 15 square metres.

    • Do you find this question helpful?  Yes   No

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Water-Cooled & Air-Cooled Diesel (1979 - 1992) :

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