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Armacell AP Self-Adhesive Sheet Insulation vs LINGDA Neoprene Foam Padding Sheets

These are not really the same product. The Armacell sheet is a large-format elastomeric insulation panel with a stated R-value and a 25/50 flame/smoke rating, meant for ducts, pipes and walls. The LINGDA pads are small neoprene foam squares for vibration damping, noise and light cushioning. Buy the Armacell for thermal insulation on flat or curved surfaces; buy the LINGDA for anti-vibration and padding jobs. Owners of the LINGDA type note the pads arrive compressed and need time to expand, and the adhesive holds on clean, flat surfaces only.

  • Choose the Armacell AP sheet if you need real thermal insulation with a published R-value and a flame/smoke rating for ducts, walls or equipment.
  • Choose the LINGDA foam pads if you need small self-adhesive squares to damp vibration, cut noise or cushion furniture, speakers and car panels.

Prices

  • Armacell AP Self-Adhesive Sheet Insulation: $58.69 at eBay (last seen Nov 8)
  • LINGDA Neoprene Foam Padding Sheets: $20.99 at Walmart (last seen Nov 9)
  • Difference: the LINGDA Neoprene Foam Padding Sheets is $37.70 cheaper than the Armacell AP Self-Adhesive Sheet Insulation at the latest prices (Nov 8 and Nov 9)
Armacell
Armacell AP Self-Adhesive Sheet Insulation 36" x 48" x 1" SAS10043

Armacell AP Self-Adhesive Sheet Insulation

Armacell AP Self-Adhesive Sheet Insulation 36" x 48" x 1" SAS10043

4.8(1 rating)
$58.69at eBayChecked Nov 8
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Pros
  • Published R4.2 thermal value
  • 25/50 flame and smoke rating
  • Large 36 x 48 inch sheets cover fast
  • Wide -297°F to 220°F service range
  • Made in the USA
Cons
  • Not UV resistant, so cover outdoors
  • Only 1 inch thick, so stack for higher R
  • Large sheets are awkward in tight spaces
  • Nitrile/PVC, not a rubber foam
LINGDA
LINGDA Foam Padding Sheet Self Adhesive 3/4" Thick Neoprene Insulation Anti Vibration Foam Rubber Pads for Furniture Cars Speakers 12 Inch X 8 Inch (4 Pcs)

LINGDA Neoprene Foam Padding Sheets

LINGDA Foam Padding Sheet Self Adhesive 3/4" Thick Neoprene Insulation Anti Vibration Foam Rubber Pads for Furniture Cars Speakers 12 Inch X 8 Inch (4 Pcs)

$20.99at WalmartChecked Nov 9
See all prices and details
Visit Walmart
Pros
  • Cuts easily to small shapes
  • Waterproof and foil-faced
  • Handles up to about 300°F
  • Good for vibration and noise damping
  • Four pads per pack
Cons
  • No published R-value
  • Small pads, limited coverage
  • Arrives compressed and needs time to expand
  • B2 rating is modest fire performance

What separates them

Armacell AP Self-Adhesive Sheet InsulationLINGDA Neoprene Foam Padding Sheets
Primary purposeThermal insulation sheetAnti-vibration and padding foam
Stated R-valueR4.2 at 1 inchNone published
Flame/smoke rating25/50 ratedB2 fireproofing grade only
Sheet size36 x 48 inches, 144 sq ft per carton12 x 8 inches, 4 pieces
Thickness1 inch3/4 inch (10 mm)
Temperature range-297°F to 220°F-40°F to 300°F
Water and UVNot UV resistantWaterproof, foil-faced
AdhesiveSelf-adhering full sheetSelf-adhesive backing on small pads

Price history

  • Armacell AP Self-Adhesive Sheet Insulation: lowest $252.19 on Nov 9 at DK Hardware; $252.19 on Nov 10.

Prices at every store

Armacell AP Self-Adhesive Sheet Insulation

  • DK HardwareNew

    In stock

    $252.19+ $20.25 shippingChecked Nov 10
    Visit DK Hardware
  • eBayNew

    Availability unknownSold by zorotools (99.9% positive, 1,400,000 ratings)Returns: Set by the eBay seller; the eBay Money Back Guarantee covers an item that doesn't arrive or isn't as described.

    $58.69+ $5.99 shippingChecked Nov 8
    Visit eBay

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All 2 stores and price history →

LINGDA Neoprene Foam Padding Sheets

  • WalmartNew

    In stockSold by Feisu 6688Returns: Sold by a Walmart Marketplace seller; returns go to the seller under the seller's returns policy.

    $20.99Free shippingChecked Nov 9
    Visit Walmart
Prices and history →

Specs compared

SpecArmacell AP Self-Adhesive Sheet InsulationLINGDA Neoprene Foam Padding Sheets
Thickness1"10mm
Coverage Area144 square feet (Per Carton)21.53 SqFT
Width36—
Length48—
R-ValueR4.2—
Temperature Range-297°F to 220°F (-182.78°C to 104.44°C)—
Flame/Smoke Rating25/50—
CompositionNitrile, PVC—
Weight28.07—
UV ResistantNo—
Country of OriginUSA—
FormSheet—
Show all 28 specsShow fewer specs
SpecArmacell AP Self-Adhesive Sheet InsulationLINGDA Neoprene Foam Padding Sheets
Product TypeInsulation Sheet—
Insulated PlasterboardNo—
Material Compositioncotton: 35%, isSubjective):false,—
Installation MethodSelf-Adhering—
color—Black
size—12" x 8" x 0.75"
Sheet size—(L)X(W)200X100cm
Material—Aluminum foil
Recommended install temperature—-10°C ~ +60°C

What reviewers say

Armacell AP Self-Adhesive Sheet Insulation

Owners and installers generally find the peel-and-stick backing a real time saver on ducts and tanks, and the closed-cell foam holds up in damp spots. Complaints center on adhesive grip on cold or dusty surfaces and on the need to cover it outdoors.

What people mention
  • AdhesiveMixedInstallers say the peel-and-stick backing saves time but can lift if the surface is cold, damp or dusty.
  • Moisture resistancePraisedOwners like that the closed-cell foam does not absorb water the way fiberglass does.
  • Outdoor useCriticisedReviewers note it is not UV resistant and must be painted or jacketed when exposed.
  • InstallationPraisedThe sheet cuts cleanly and conforms to curved ducts and tanks.

LINGDA Neoprene Foam Padding Sheets

Owners mostly use these sheets for speaker isolation, furniture pads and car panel damping and report good vibration and noise reduction for the thickness. Complaints center on the compressed packing and the adhesive being permanent once applied.

What people mention
  • Vibration dampingPraisedOwners say it noticeably reduces vibration and rattle under speakers and appliances.
  • Adhesive strengthMixedThe backing sticks firmly, but users note it is permanent and leaves residue when removed.
  • Packing recoveryCriticisedBuyers report the sheets arrive compressed and need time to bounce back to full thickness.
  • ThicknessPraisedThe 3/4 inch profile gives more cushioning than thin foam tape for heavy items.

Questions and answers

Which is better for insulating a duct?
The Armacell. It has a published R4.2 value and a 25/50 flame/smoke rating, which is what duct insulation is judged on. The LINGDA pads have no R-value and are too small for duct runs.
Which works better for stopping vibration under a speaker or appliance?
The LINGDA neoprene pads. They are made for anti-compression and vibration damping. The Armacell sheet is a thermal product and is too thick and stiff for that job.
Which lasts longer?
Both are closed-cell foams that resist moisture. The Armacell is a single large sheet with a full adhesive face, so it has fewer seams to fail. The LINGDA pads depend on clean, flat surfaces and can peel at edges.
Can I use the Armacell outdoors?
Not exposed. It is not UV resistant, so it needs a jacket or coating outdoors. The LINGDA is foil-faced and waterproof, but its adhesive is still best kept out of direct weather.
Is the LINGDA worth stepping up to over the Armacell?
Only if your job is padding, noise or vibration. For heat loss, condensation control or fire-rated assemblies, the Armacell is the right product and the LINGDA is not a substitute.

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Resistance temperature range
—
-40°C ~ +149°C
Waterproof—Yes
Fire resistant—Yes
Fireproofing grade—B2
Distortion temperature—200
Radiant heat blocked—97%
Aluminum sheet thickness—0.1mm