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Finding the best expanding foam pond suitable for your needs isnt easy. With hundreds of choices can distract you. Knowing whats bad and whats good can be something of a minefield. In this article, weve done the hard work for you.

Product	Features	Editor's score	Go to site
	GREAT STUFF Pond & Stone 12 oz Insulating Foam Sealant		Go to amazon.com
	GREAT STUFF PRO Window & Door 20 oz Insulating Foam Sealant		Go to amazon.com
	Instafoam 1/2 Gallon Kit, Expanding Foam		Go to amazon.com

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Reviews

1. GREAT STUFF Pond & Stone 12 oz Insulating Foam Sealant

Feature

Black foam designed for use in water features, blending in with rocks and shadows
Water resistant sealant to help direct the flow of water in waterfall, pond, & streambed construction
For use in landscaping as a foam filler, sealer and adhesive
Application in damp or dry conditions; cures in 8 hours
Safe for fish

Description

GREAT STUFF Pond and Stone is the easy way to create beautiful aquascapes and hardscapes. By expanding to fill gaps and cracks, our foam filler helps direct the flow of water in waterfall, pond and streambed construction to the exterior of the water feature, instead of between or behind rocks.

2. GREAT STUFF PRO Window & Door 20 oz Insulating Foam Sealant

Feature

Must be used with GREAT STUFF PRO Series Dispensing Gun, sold separately
Made in U.S
Exclusively formulated to air seal the gap between a window and a door frame and its rough opening
Minimal-expanding, low pressure foam that will not bow or bend window or door frame
Forms durable, airtight, water-resistant bonds to vinyl, wood and metal frames
One 20oz can foams between 15-18 normal sized windows

Description

If you're installing windows, doors or skylights and you're not using GREAT STUFFWindow & Door foam sealant, you're probably unaware of a faster, cheaper air-sealing solution. In fact, there are some window and door manufacturers that have tested and endorsed GREAT STUFFWindow & Door. It is a minimal-expanding foam with a low pressure build that forms a durable, airtight and water-resistant seal between a window or door frame and its rough opening without bowing or bending the window frames. It's the original window and door draft stopper.

3. Instafoam 1/2 Gallon Kit, Expanding Foam

Feature

Two Part Expanding Foam
2.1 Lb Density
Expands 30:1
Meets MIL-P-21929B
Includes 2, 1 Quart Containers

Description

Consists of equal parts of resin and catalyst. When the two components are mixed in equal volume, they expand into a rigid closed cell foam of 2.1 lb nominal density; expanding approximately 30 to 1 depending on temperature. Thorough mixing of the two components is essential. Small-batch mixes are recommended. Cured foams can be easily trimmed, cut and shaped with common woodworking tools.

Conclusion

All above are our suggestions for expanding foam pond. This might not suit you, so we prefer that you read all detail information also customer reviews to choose yours. Please also help to share your experience when using expanding foam pond with us by comment in this post. Thank you!