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Waterproof Expanding Foam Sealant Comparison - July 2025

7 Best Waterproof Expanding Foam Sealant In the UK

1
Best Choice
9.8Exceptional
2
9.7Exceptional
3
9.6Exceptional
4
9.4Excellent
5
9.3Excellent
6
9.0Excellent
7
8.8Very Good
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Model

Gorilla Heavy Duty Expanding Foam 353ml - Multi-Purpose, Durable & Seals out Air, Moisture & Pests | No Shrinkage & Maximum Seal | For Indoor & Outdoor* Use
Model
Haltons Expanding Foam Filler | Ready To Use | No Tools Required | Waterproof Caulk Spray Sealant for Walls, Cracks, Gaps, Holes in Brick, Wood, Metal | Strong & Reliable Repair Indoor & Outdoor (2pk)
Model
2 x Cans Of The Original Gorilla Filler Weatherproof expanding foam 500ml Each
Model
GORILLA FILLER WEATHERPROOF EXPANDING FOAM FILLER
Model
fischer 569386 B3 Triple X Expanding Hand Foam, Yellow, 670ml (Pack of 1)
Model
FERRIS | The Original Gorilla Filler [2 x 500ml] Weatherproof Expanding Foam Filler | Securely Seals & Fills, Squeezes into Gaps | Suitable for Filling, Sealing Gaps & Cavities
Model
500ml Gap Expanding Foam Filler PU Expansion Insulation BONDING Filling - 1x

Brand

Gorilla
Brand
Haltons
Brand
JKG Unknown
Brand
Gorilla Filler
Brand
fischer
Brand
FERRIS
Brand
SFM Rapide

Reviews

20 reviews
Reviews
2,256 reviews
Reviews
10,000 reviews
Reviews
26,032 reviews
Reviews
1,048 reviews
Reviews
544 reviews
Reviews
2,964 reviews

Features

Simple to use

9.9
Simple to use
9.4
Simple to use
8.4
Simple to use
7.9
Simple to use
8.6
Simple to use
7.9
Simple to use
7.0

Worth the money

9.1
Worth the money
9.1
Worth the money
8.6
Worth the money
7.9
Worth the money
8.1
Worth the money
7.4
Worth the money
7.0

Attachment

9.9
Attachment
9.1
Attachment
8.6
Attachment
8.4
Attachment
9.1
Attachment
8.4
Attachment
7.0

Waterproof

9.8
Waterproof
9.1
Waterproof
8.9
Waterproof
9.1
Waterproof
8.6
Waterproof
8.4
Waterproof
7.0

Tech Specs

customer reviews

4.7 4.7 out of 5 stars 5 ratings 4.7 out of 5 stars
customer reviews
4.2 4.2 out of 5 stars 564 ratings 4.2 out of 5 stars
customer reviews
4.3 4.3 out of 5 stars 2, 500 ratings 4.3 out of 5 stars
customer reviews
4.3 4.3 out of 5 stars 6, 508 ratings 4.3 out of 5 stars
customer reviews
4.3 4.3 out of 5 stars 262 ratings 4.3 out of 5 stars
customer reviews
4.2 4.2 out of 5 stars 136 ratings 4.2 out of 5 stars
customer reviews
4.1 4.1 out of 5 stars 741 ratings 4.1 out of 5 stars

item weight

460 g
item weight
1.2 kg
item weight
-
item weight
530 g
item weight
770 g
item weight
1.06 kg
item weight
400 g

batteries required

No
batteries required
No
batteries required
-
batteries required
-
batteries required
No
batteries required
No
batteries required
No

product dimensions

19.7 x 65 x 65 cm 460 g
product dimensions
-
product dimensions
-
product dimensions
10 x 5 x 5 cm 530 g
product dimensions
6 x 6 x 34 cm 770 g
product dimensions
8.3 x 16.9 x 26 cm 1.06 kg
product dimensions
-

included components

Gorilla Heavy Duty Expanding Foam
included components
Expanding Foam Can
included components
-
included components
-
included components
1 Can of Foam
included components
2 x 500ml Cans
included components
-

color

Grey
color
-
color
-
color
White
color
Yellow
color
Cream
color
-

item package quantity

1
item package quantity
1
item package quantity
-
item package quantity
-
item package quantity
1
item package quantity
-
item package quantity
-

package dimensions

-
package dimensions
25.6 x 14 x 7 cm 1.2 kg
package dimensions
24.5 x 20.9 x 8.7 cm 1.07 kg
package dimensions
-
package dimensions
-
package dimensions
-
package dimensions
23.5 x 9.9 x 6.7 cm 400 g

Available On

Available On
Available On
Available On
Available On
Available On
Available On

Our Top 3 Picks

Here are the top 3 recommended products with more information to help you find the right product for you
  • 9.8
    1
    Gorilla

    Gorilla Heavy Duty Expanding Foam 353ml - Multi-Purpose, Durable & Seals out Air, Moisture & Pests | No Shrinkage & Maximum Seal | For Indoor & Outdoor* Use

    9.9 Simple to use
    9.9 Attachment
    9.8 Waterproof

    Why we love it

    Effectively seals gaps up to 2.5cm.
    Paintable and sandable for custom finishes.
    No shrinkage for a lasting seal.
  • 9.7
    2
    Haltons

    Haltons Expanding Foam Filler | Ready To Use | No Tools Required | Waterproof Caulk Spray Sealant for Walls, Cracks, Gaps, Holes in Brick, Wood, Metal | Strong & Reliable Repair Indoor & Outdoor (2pk)

    9.4 Simple to use
    9.1 worth the money
    9.1 Attachment

    Why we love it

    Expands rapidly for quick filling.
    No tools required for application.
    Versatile for multiple surfaces.
  • 9.6
    3
    2 x Cans Of The Original Gorilla Filler Weatherproof expanding foam 500ml Each
    JKG Unknown

    2 x Cans Of The Original Gorilla Filler Weatherproof expanding foam 500ml Each

    8.9 Waterproof
    8.6 worth the money
    8.6 Attachment

    Why we love it

    Weatherproof and durable.
    Expands to fill gaps.
    Ideal for outdoor use.

Our ranking system

The TopChoice.co.uk Team selects top-of-the-line items from a wide selection and conducts rigorous evaluations on almost all the products available on the internet. We rank each product based on how well it matches our criteria.We can ensure that the product is well-tested with the help of our expertise, experts, and artificial intelligence technology. TopChoice.co.uk requires consistent care for the products we review, ensuring that our assessments are always accurate and up to date.

Features

Our team of experts analyzes key attributes, capabilities, significance, and many more depending on the type of product to determine its effectiveness.
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Consumer Reviews

We ensure an evaluation of the ratings using references all over the internet for each product. With the help of our AI technology and professional review teams, we give weight to the worth of individual user experiences.
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Popularity

Popularity is an important criterion in choosing a product. Several factors contribute to the popularity of the products on our site, including prestige, relevance, reputation, news, and more.
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Value for money

TopChoice.co.uk compares product attributes to price, examines tech specs, ratings and reviews, and more.

When compared to other criteria, does the pricing seem reasonable? In order to provide genuine value for money, our team must answer that question with advanced calculations.