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Square Gutter

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Features of Square Gutters

  • Attractive rectilinear profile.
  • Flow capacity in excess of Half Round.
  • Pre-fitted gutter seal retaining clip system for fast user friendly installation.
  • Pre-lubricated gutter seals.
  • Cost effective solution for both new build and refurbishment applications.
  • Connects to most other metal or plastic systems using our extensive range of adaptors.
  • System is covered by a BSI Kitemark - no. KM501316.
* Covers Black, White and Brown
 
 

Square Gutters Compatibility

If you are looking to match up with existing square guttering, perhaps on a neighbouring roof, you should establish the make of that system (it will be written on one, if not all, of the fittings), and check the compatibility chart on our technical page - not all square systems are interchangeable.

Our products are compatible with most systems including Hepworth, Brett Martin and Hunter. 

Capacity of Square Gutters

The carrying capacity of any gutter system is determined not only by its size, but also by the position of the rainwater downpipes in relation to the gutter and the fall to which it is laid. All gutter systems can actually be fixed level, although we would recommend that a fall of 1:600 is incorporated (this equates to approximately 1 inch in 50 feet, or 2.5cm in 15 metres in metric terms).
 
Floplast Square Gutter capacity varies between 1.7 litres per second (fixed level with the outlet at one end) and 3.95 litres per second (fixed at 1:350 with a central outlet). Surprisingly this is almost double that flow rate of Half Round Guttering, and more than ample to cope with the flow from a standard pitch, domestic roof. If you have a very steep pitched roof, or perhaps a much larger than average surface area, we would recommend that you consider fitting either our Deepflow Gutters or Ogee Gutters.
 
If your roof is on a barn or commercial building we recommend that you consider using our 170mm Industrial Guttering.
 
The size of the downpipe is irrelevant in terms of the system capacity – provided that they are kept free of leaves and debris our downpipes will always have a far greater flow capacity than the gutters that they serve. Square guttering connects to 65mm Square Downpipe as standard, but it can easily be connected to 68mm round downpipe if required by using the RDS2 adaptor. 
 

Square Gutter Installation Guide

For tips and videos on square plastic gutter installation, compatibility and maintenance please visit our Guides and Tips Section.

If you need any other assistance please do not hesitate to contact us.

    

Your Questions

Do I Need a Fascia Bracket on Either Side of a Fitting?

Do I Need a Fascia Bracket on Either Side of a Fitting?

Where should fascia brackets be installed other than in a straight run of gutter? If you are unsure then read on!

How Far Apart Should Fascia Brackets Be Fixed?

How Far Apart Should Fascia Brackets Be Fixed?

Did you know that the spacing of Fascia Brackets varies depending upon which system is used? Read on for more details.

Which Gutter Adaptor do I need?

Which Gutter Adaptor do I need?

Joining two different gutter systems together can be problematic. Our easy reference table provides all the information needed.

What are the dimensions of your Hoppers?

What are the dimensions of your Hoppers?

Hoppers come in all shapes and sizes. This guide details the exact dimension of all of the PVC Hoppers that we stock.

How Far into the Gutter should Roof Tiles / Slates Project?

How Far into the Gutter should Roof Tiles / Slates Project?

Gutters must be positioned correctly in relation to tiles and slates to catch the run-off from the roof. Click for more details.

Stopends - External or Internal?

Stopends - External or Internal?

It is important to understand the difference between the two types of Stopends, including where to use each fitting.

How does the Downpipe connect to the Guttering?

How does the Downpipe connect to the Guttering?

This can be a little confusing if it is your first time installing a gutter system. Click here for the solution.

How do I connect my Downpipes to the Underground Drainage?

How do I connect my Downpipes to the Underground Drainage?

There are many different adaptors available to connect rainwater pipes to underground drainage. Our recommendation can be found here.

My roof does not have a Fascia Board- How do I support the gutter?

My roof does not have a Fascia Board- How do I support the gutter?

There a number of ways to get over this problem by using a variety of different metal rafter brackets as detailed.

Do I need to use silicon sealant on normal PVC gutter joints?

Do I need to use silicon sealant on normal PVC gutter joints?

This is a question that we are often asked. Read on for some useful tips on how to make gutter joints permanently watertight.

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