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1.89 in. x 33.9 yd. Foilmastic™ Sealant Duct Tape

$2498
  • Liquid mastic alternative
  • One step application process: remove liner, apply; no cure time
  • Permanent butyl rubber adhesive bond
  • View More Details
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Price:
$2498

Product Overview

Professional results that a DIYer can be proud of begins with Foilmastic™ Sealant Tape by Nashua. This tape has a durable puncture resistant foil backing ideally used for taping joints and seams in class 1 flexible duct work for HVAC systems. Foilmastic™ offers a speedy and clean mastic putty alternative. Nashua Tape. Trusted by professionals. DIY approved. Count on Nashua to get the job done right.
  • High performance premium butyl rubber adhesive provides a waterproof and air tight seal.
  • UL 181B-FX Listed
  • Verified by SMACNA
  • Aluminum foil backing provides UV, moisture, mold and mildew resistance
  • Low VOC content
  • Can contribute toward satisfying EQ credit 4.1 (low emitting materials) under LEED

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Compare Similar Duct Tape

current product
1.89 in. x 33.9 yd. Foilmastic™ Sealant Duct Tape
2.83 in. x 60.1 yds. 357 Ultra Premium Duct Tape2.83 in. x 60.1 yds. 357 Ultra Premium Silver Duct Tape1.89 in. x 54.7 yds. 510 Professional-Grade Gaffer Duct Tape in Black
BrandNashua TapeNashua TapeNashua TapePolyken
Name1.89 in. x 33.9 yd. Foilmastic™ Sealant Duct Tape2.83 in. x 60.1 yds. 357 Ultra Premium Duct Tape2.83 in. x 60.1 yds. 357 Ultra Premium Silver Duct Tape1.89 in. x 54.7 yds. 510 Professional-Grade Gaffer Duct Tape in Black
Price
$2498
$2611
/roll
$2776
/roll
$3099
Ratings
(102)
(4)
(3)
(26)
Tape Width (in.)1.892.832.831.89
FeaturesNo Additional FeaturesNo Additional FeaturesNo Additional FeaturesNo Additional Features
Thickness (mm).4890.330.330.292
View ProductView ProductView ProductView Product

Specifications

Dimensions

Tape Length (yds.)
33.9
Tape Width (in.)
1.89
Thickness (mm)
.489

Details

Color Family
Metallics
Features
No Additional Features
Feet per roll
101.7
Kit
No
Material
Aluminum
Maximum application temperature (F)
200
Maximum hold temperature (F)
90
Minimum application temperature (F)
40
Minimum hold temperature (F)
-20
Number of Rolls Included
1
Pack Size
1
Returnable
90-Day
Tape Design
Silver

Questions & Answers

Typical questions asked about products:

  • Is the product durable?
  • Is the product easy to use?
  • What are the dimensions of the product?

Customer Reviews

  • 4.6
    out of 102 reviews
  • 95% recommend this product
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Showing 1-30 of 102 reviews
These 5 star reviews gotta be fake
You know that saying you get what you pay for? It isn’t always true. This is difficult to use, expensive and frustrating. I regret spending $26 hard earned dollars when a five dollar roll of duct tape is ten times faster and just as good. Have fun trying to expose the adhesive backing. It’s impossible to get off. I would return it if I could.
by
    Used for ill-fitting duct vents
    I used this table to seal around the ill-fitting ducts in my 20 year-old home. I scrubbed the wood sub-floor with water and detergent and also cleaned inside the metal vents with acetone. The tape was easy to apply and mold around the corners. As others have said it is hard to sepatate the tape from the backing. I therefore started it once and just peeled back as far as length of tape needed. As the pieces I needed were quite short this was easy to handle.
    by
      • Recommended
      The Nashua Foilmastic Sealant Tape, although expensive, is a great product. I am currently worki...
      The Nashua Foilmastic Sealant Tape, although expensive, is a great product. I am currently working on sealing the HVAC ducting that runs throughout the crawlspace, branching out from the distribution plenum. None of the ductwork was ever sealed and I am guessing that I was possibly losing 30-50% of the heater output (judging by how warm the crawlspace was during the middle of the winter). I plan to brush or wipe mastic sealant on the joints of the adjustable elbows, but am using the Nashua FoilMastic Sealant Tape on the straight runs and especially where the ducting attaches at the distribution plenum. I will also be sealing the cold air return runs to see if we can cut down on the dust, vapors and whatever else is blown back up into the living spaces when the heater is operating. The Sealant Tape is fairly easy to use and, because it is somewhat flexible, lays down along curved surfaces fairly well. Be sure to clean the ducting before applying the tape and then smooth and secure the tape fully with a small artist's squeegee. If used correctly the squeegee will easily press out most wrinkles. About the only difficulty for me was separating the backing from the tape, but that probably has more to do with bad eyesight and limited space to work in than anything. Using a sharp knife instead of a fingernail helped a lot. Other than that, I am very impressed with the Nashua Foilmastic Sealant Tape. By the way, Home Depot had the best price of any online reseller or local hardware store. So far, with only the distribution connections fully sealed, I can feel--and hear--a huge difference in the output. The furnace is cycling less often and it runs for a shorter period of time to heat up the living spaces. It is much quieter, especially in the living space near the furnace. I can't wait to see the results after all the ducting runs are fully sealed and insulated.
      by
      • Verified Purchase
      • Recommended
      3 people found this helpful
      I have done a bunch of things around my home to make it more energy efficient. To date, I've ins...
      I have done a bunch of things around my home to make it more energy efficient. To date, I've installed all new windows and sealed all of the doors, I've even placed child proof plastic prongs in each of the outlets along the outside walls of my home to stop air leaks. So, when I saw the 1.89 in. x 33.9 yd. Foil Mastic Sealant Tape available, I grabbed it immediately. I had installed a new more energy efficient central A/C system several years back, and I did seal the ducts in my basement with both foil tape and mastic, however, there are still obvious air leaks. This 1.89 in. x 33.9 yd. Foil Mastic Sealant Tape will take care of that.
      by
      • Recommended
      1 person found this helpful
      Nashua’s Foil Mastic Sealant Tape is tough, strong, and really sticks and seals! The ductwork in ...
      Nashua’s Foil Mastic Sealant Tape is tough, strong, and really sticks and seals! The ductwork in my unfinished basement leaked hot air, wasting energy and money, so I set up to seal the seams. There are an assortment of products to seal your ductwork, but if you need a tough tape that will stand up to temperature and vibration, Nashua’s 1.89 in. x 33.9 yd. Foil Mastic Sealant Tape (Model # 1461664) is great! Regular “duct tape” is typically a sticky mess that doesn’t seal well, and degrades. Thin foil tape works but tears easily. Nashua’s foil mastic sealant tape is tougher, stronger, and feels like it’s going to make a permanent seal, even if the ductwork flexes. It’s “peel and stick”, so it’s easy to measure and cut to length. Then carefully peel off the backing (the blue plastic in the pictures) and apply to the ductwork seams. Position it carefully - once it’s pressed in place it can’t be removed easily! Hints for a good result: - Clean the work surface - this goes for any tape - nothing sticks well to dust - Use scissors to cut the tape - you *can* tear it, but it leaves a ragged edge that makes it difficult to remove the backing - Press in place solidly - the thickness really seals well, but it needs a firm hand to help it conform to the surface Not inexpensive, but worth it for a good result that should last. Note: We received this item free from Home Depot’s “Seeds” program. Home Depot only asked that we provide an honest review.
      by
      • Recommended
      6 people found this helpful
      If you have ever worked with this type of tape you will know it's a little trickey. The tape is v...
      If you have ever worked with this type of tape you will know it's a little trickey. The tape is very sticky and if you let is curl back and touch its self it maybe stuck permanently. Having said that the tape works very well at sealing connections in duct work or at attaching foil backed insulation around ridged duct work. I have used it in both applications and found out that it works very well. And the plus is that in two years it will still be holding and not dry out like "duck tape" tends to do. I have included a photo of the duct above my vent hood over our range connected and sealed with the foil tape.
      by
      • Recommended
      4 people found this helpful
      Not all duct tape is approved by code for use on ducts. In fact, most of it is not. But this is...
      Not all duct tape is approved by code for use on ducts. In fact, most of it is not. But this is the good stuff. Meets UL181 specs for use on sheet metal and listed Class 1 flexible ducts (most of the UL listed plastic-type duct). This is a foil-type tape that meets the specs for all pressures and velocities of ducts and makes a very tight and permanent seal. Your building inspector will like it. If you have ever done any remodeling work, you may have run into older ducts sealed with cloth-type duct tapes that were not UL listed. After a decade or so, these tapes often turn brittle and the adhesive turns to dust. This is disaster for a ventilation system that needs to be sealed tight to make sure that there is no waste and leakage in heated or cooled air. After drywall is installed, it is nearly impossible to repair this type of problem without huge cost. Even if you don’t have a forced-air duct system in your building, the construction crew often installs ducts for clothes dryers, bath fans and kitchen range hood exhaust ducts, and this is the tape to use to insure that there is no leakage. Clothes dryer kitchen exhaust ducts and cannot be secured with screws (by code), so a strong tape that can withstand heat and moisture is your best choice, and this is a good one. Better yet, it is made in USA. Take your time, spend a little bit more now to do it right and eliminate problems later, then you will have a job that will last.
      by
      • Recommended
      3 people found this helpful
      The aluminum foil tape is really great product. This tape to be much more of a commercial grade a...
      The aluminum foil tape is really great product. This tape to be much more of a commercial grade and thicker aluminum layer with strong adhesive making robust material. This is an excellent tape for the HVAC projects. No putty work needed to seal the duct work. This tape that can be used for sealing off low, medium and high pressure systems of duct work.
      by
      • Recommended
      1 person found this helpful
      An excellent tape for the HVAC projects. You do not need to use the old fashioned putty work to s...
      An excellent tape for the HVAC projects. You do not need to use the old fashioned putty work to seal the duct work. This is a very high quality sealant tape that can be used for metallic or non metallic, flexible or rigid duct work to seal off low, medium and also high pressure systems. Nashua is the trusted name with all the HVAC personnels for many years, and it is proudly made in USA.
      by
      • Recommended
      4 people found this helpful
      The exact tape we needed to finish the job!!! Thankl...
      The exact tape we needed to finish the job!!! Thankl You!!!
      by
        Rating provided by a verified purchaser...
        Rating provided by a verified purchaser
        by
          Phenomenal stuff. I bought it for repairs other than duct...
          Phenomenal stuff. I bought it for repairs other than duct work. The glue on the back is strong, and the foil web is thick enough to have strength. I repaired broken glasses with it and also re-attached a driver's side view mirror with it. Almost as many uses as Duct Tape!
          by
            Very difficult to peel off the backing
            Very difficult to start peeling off the backing. It took me three times as long to apply this mastic than it should have. I have previously used the Hardcast Foil-Grip that worked like a dream. Unfortunately I needed something quickly and this Nashua was all that was available at the time. I'm all ears if someone knows of an easy way to peel off the backing every time you start with a fresh piece.
            by
            • Verified Purchase
            Did exactly what I needed it to do! Using to...
            Did exactly what I needed it to do! Using to attach ventilation tube to the duct work.
            by
              Rating provided by a verified purchaser...
              Rating provided by a verified purchaser
              by
              • Verified Purchase
              Rating provided by a verified purchaser...
              Rating provided by a verified purchaser
              by
              • Verified Purchase
              Rating provided by a verified purchaser...
              Rating provided by a verified purchaser
              by
              • Verified Purchase
              Rating provided by a verified purchaser...
              Rating provided by a verified purchaser
              by
              • Verified Purchase
              The adhesive on this is great. Sealed my leaking...
              The adhesive on this is great. Sealed my leaking ducts perfectly.
              by
              • Verified Purchase
              Great quality and price...
              Great quality and price...
              by
              • Verified Purchase
              • Recommended
              product performed to expectations; it was somewhat expensive, but in the end it was easy to use, ...
              product performed to expectations; it was somewhat expensive, but in the end it was easy to use, patched some rusted duct work with holes, so in the end it was worth the price and assuming i only wanted to repair the duct once, it was worth the price..
              by
              • Verified Purchase
              • Recommended
              This stuff STICKS! Be sure to use a hard roller or a stiff plastic squeegee to make sure that th...
              This stuff STICKS! Be sure to use a hard roller or a stiff plastic squeegee to make sure that the adhesive is firmly and evenly attached. Good luck if you need to remove it and readjust. I needed to reattach my A-coil housing to the top of the furnace/blower box after cleaning the A-coil. This tape isn't cheap, but is VERY strong. It did the job quite nicely. Don't even bother trying to use your fingernail to peel off the backing. I found it easiest to use the point of a small pocket knife blade to slip between the backing and the adhesive. Once you have an edge peeled back, then you can use your fingernail to grab and peel the entire piece that you're working with.
              by
              • DIY
              • Verified Purchase
              • Recommended
              1 person found this helpful
              BETTER THAN 3M!!!! This stuff STiCKS!!...
              BETTER THAN 3M!!!! This stuff STiCKS!!
              by
              • Verified Purchase
              Great Stuff! And it sticks like iron. Highly recommend.
              Great Stuff! And it sticks like iron. Highly recommend.
              by
              • Verified Purchase
              • Recommended
              Excellent seal on duct seams and joints won’t allow water...
              Excellent seal on duct seams and joints won’t allow water vapor to come out.
              by
              • Verified Purchase
              Excellent product the only reason I’m giving 4 stars is...
              Excellent product the only reason I’m giving 4 stars is because it’s kind of expensive
              by
              • Verified Purchase
              Rating provided by a verified purchaser...
              Rating provided by a verified purchaser
              by
              • Verified Purchase
              Rating provided by a verified purchaser...
              Rating provided by a verified purchaser
              by
              Response from DaveApr 28, 2021
              I don't believe this this is the TrexRainEscape or TrexProtect product. If it is please feel free to give us a call, we are always interested on how we can make our product better. Here is our direct line. 877-348-1385
              • Verified Purchase
              Rating provided by a verified purchaser...
              Rating provided by a verified purchaser
              by
              • Verified Purchase
              This tape is great!! Even though it isn’t the type of tape I was looking for, (& asked 3 differen...
              This tape is great!! Even though it isn’t the type of tape I was looking for, (& asked 3 different associates to help me find), it performed as good as, if not better than the roll of red vapor barrier tape I was originally looking for probably would have. From experience, I know it doesn’t like to work on wet surfaces... but this tape did a great job!!! I have older, double pane windows that are approx 28”x54” on each side, and have lost the ‘gas’ between the panes. Well, here in Fairbanks AK, when the sun is shining bright & beautiful in the winter... that = COLD!! Unless you’re the windows in my bedroom which must have attracted enough of the suns heat, in contrast to the -20 temps, to cause deep enough cracks in the glass that I could feel -20 blowing into my room. I decided to go get 2” ridgid foam & the trusty red vapor barrier tape to hold and seal the foam in place. So much frost had built up on, and around my windows that I had to use blow dryer to melt it... causing wet surfaces in some spots. But this tape stuck like a champ!! Thanks to my son for recommending this tape when none of the associates could locate vapor barrier tape!! ;-)
              by
              • Verified Purchase
              • Recommended
              Showing 1-30 of 102 reviews