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Internet #100011940

Model #85148

Store SKU #518830

  • Diverts water away from the foundation/drainage pipe/catch basin
  • Durable vinyl construction with flexible design
  • Compatible with 2 in. x 3 in. and 3 in. x 4 in. downspouts
  • See More Details

Product Overview

Easily repair damaged gutters or adds durability to new installations with the Amerimax SeamerMate 10 oz. Gutter Sealant. This strong sealant has a tri-polymer based formula that is semi-self leveling. SeamerMate can be applied under water and contains a strong holding power.
  • Use to seal all gutter connections in new or damaged gutters
  • Compatible with most types of metal-to-metal sealing
  • Professional grade tri-polymer based formula
  • Semi-self leveling with strong holding power
  • 4% VOC content
  • UV resistant
  • Paintable (Allow 24 hours cure time)
  • California residents

Info & Guides

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Product Depth (in.)
Product Height (in.)
Product Width (in.)


Color Family
Paintable,Rustproof,UV Stabilized
Gutter Sealant Type
Roof Sealant
Product Weight (lb.)
Roofing Product Type

Warranty / Certifications

Manufacturer Warranty
Limited Manufacturers Warranty - Free from defects in materials and workmanship

Questions & Answers


Can this be used on aluminum gutters?

Asked by Eric December 31, 2020

Yes, this is the same sealer that comes with the aluminum seamers for use with aluminum gutters. The tiny tubes that come with the seamers is difficult to apply. This is applied with a calking gun and there is enough to really ensure no leaks.

How do I remove this stuff from my tools and my levelers?

Asked by AntWolf November 14, 2020

Probably just scrape it off

does this work on vinyl gutters?

Asked by Leaky October 18, 2020

Yes; make sure your gutter is dry before you apply the sealant.

How long before rain is excepted can it be applied

Asked by Rainman September 2, 2020

About 2 hours

Do I need to use a caulking gun to apply the seamer mate to attach the inside gutter mitre?

Asked by Hank June 19, 2020


what color is this product ?

Asked by rigid1061 December 27, 2019


Can product be used to fill in space between tiles on back splash and quartz kitchen countertop ?

Asked by Barb December 2, 2019

This is not what the product was designed for so it would be difficult for me to say if it would perform as you need it to.

will this work on copper gutters?

Asked by gj November 6, 2019

Yes, but surface needs to be dry.

Can this product be used on pvc

Asked by Olivia April 3, 2019

Yes, it sticks to all kinds of materials including PVC. Make sure your pvc is dry before you apply this gutter sealant.

Can this be applied over the top of existing silicone gutter sealant? The existing sealant is app...

Asked by Rue March 23, 2019

A fresh clean surface would be more ideal, however if the old sealant is not failing than sure try a top coat. Don't know why you would want to, unless the old coat was failing.

10 oz. Gutter Sealant - page 2

Customer Reviews

  • 4.4
    out of 125 reviews
  • 88% recommend this product
Filter by:
Showing 1-10 of 125 reviews
So far so good, has prevented the water from leaking, used on seam where I attached an old gutter...
So far so good, has prevented the water from leaking, used on seam where I attached an old gutter to a new one. It also fixed a leak in another area of the gutter in which I applied the sealant, put a little piece of screen on it (like when patching a roof) then put sealant over that piece of screen and it worked.
by Alex
4 people found this helpful
This sealer is great for sealing up gutter corners....
This sealer is great for sealing up gutter corners.
Worthless! Doesn’t work
I completley cleaned and dried 5 aluminum gutter joints last week and applied the sealant per the directions 24 hrs before rain moved in. I checked on the repair today and found that 4 of the 5 joints were leaking. I was able to pull all of the sealant out with my fingers while wearing gloves.
by GAHandyman
1 person found this helpful
product worked as intended...
product worked as intended
by JGalt
Leaky gutter corner solution
Seamless gutters were leaking in one corner. The seams inside the gutter at the corner joint were made to be as clean, dry and free of old caulk as possible. I first caulked the seam with silicone, using a putty knife for smoothing - but missed the leaking spot. Since silicone does not stick to itself ( so more could be added) it had to be scraped out. The Seamer Mate sticks to metal and itself very well. The first time with that the leak was still not stopped. Another application finally got the leak. A thicker layer does appear to self-level and shrink a little when it dries. A small amount of settling may aid in filling a crack. A thinner vertical layer will not "run". The product overview says it can be applied under water. The adhesion is so good to clean, dry metal, that I think a wet surface might detract from that. It is apparently paintable, which silicone is not - but not an issue inside a gutter. Bottom line, in my experience, Seamer Mate was excellent and better than silicone.
by jb4
This product works much better than a silicone caulk
This product works much better than a silicone caulk
by bds
1 person found this helpful
Just Caulk?
No; I would have say I am impressed with this stuff for seam edges - used on box gutters for which seal/peal had been used but seam edge coming lose. Caulk bead OK but I needed better spread - left thumb called into action - worked fine - adheres well and drys essentially where you left it. Nasty to get off thumb & finger but dry pull/rub off after a few hours. Long term time will tell but short term very good in use.
by campbejo
So far, so good. It applied easily....
So far, so good. It applied easily.
by HomeDepotCustomer
Rating provided by a verified purchaser...
Rating provided by a verified purchaser
by HomeDepotCustomer
Showing 1-10 of 125 reviews