Gutter Foam Box Gutter

Big Water Tanks - Gutter Foam Box

  • $14.95
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Box Gutter Foam

Gutter Foam is a very safe, simple and cost effective solution to managing leaves and debris entering your water tank, it has been developed for New Zealand conditions by Gutter foam and we are a Gutter foam distributor here in New Zealand, we can deliver it with your new water tank or we can just courier it to your address if required.

Gutter Foam is an open cell polyurethane foam filter insert that prevents leaves & tree debris from entering your gutters.

It stops blockages and allows rainwater from the roof to pass unrestricted through the gutter system.

Suitable Gutter Types

Large Box Gutter Profile:

Gutter Foam - Small Box Profile Gutter
Note: this is only for the smaller Box style gutter 125mm wide x 125mm front height(for Smaller Box Gutters 110mm wide x 110mm front height - use Gutter Foam Standard)

How Much Gutter Foam do you need?


Calculate how many meters you need, dont forget to measure the roof-line as its a little bigger than building and give yourself a little extra for cutting.

Gutter foam is sold in 1m Pieces

Installation Process

Have a look at the installation video to see how to install your gutter foam:


Climbing on roofs & up ladders are high risk areas – consider using a qualified installer.
Make sure that the ladder or platform you will be working off is safe and secure.
Clean out the gutters & down-pipes with a scoop, brush and running water. This makes sure that they are free of leaves, debris and sludge.
Make sure that your gutters are clipped into the brackets and have the correct fall towards the down pipe outlets. Incorrect fall to the down-pipes will impede the performance of any spouting system.


Start your installation at the internal or external corners of your guttering as it is best to have a full length of filter foam at these points. You will need to cut a mitre join, most likely 45 degrees.
Ensure that the front sharp end of the foam is tucked into the front lip of the gutter and the back of the foam is pushed to the fascia side of the gutter and then tucked neatly under the bottom edge of the roof overhang.
Place the next length of filter foam into the gutter and be sure to compress it by 5mm against the previous length leaving no gaps.


If your gutters have internal support brackets that are low in the gutters you may need to cut the underside of the Gutter Foam with a sharp knife at the point of each internal bracket. The Foam will straddle the bracket. With high support brackets, like with Marley® Spouting Systems, the Foam can tuck underneath the bracket or cut the foam into shorter lengths to suit the distance between each bracket.


Sharp box knife or a sharp kitchen knife & tape measure.
Gloves are necessary to save your hands and fingers from being cut on the sharp edges of the roof and gutter.

Gutter Foam Warranty

Gutter Foam comes with a 7 Year Warranty from Gutter Foam.

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