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How it is done properly

Sizes, spacings and the order of the steps — the things people ask on the phone, gathered in one place. Written from the workshop, from work we have been doing since 1969.

Coated steel snow guard, pressed with deep ribs

How many snow guards a roof needs

Austrian and German standards call for 2 to 2.5 snow guards per m² of roof. How to space them, why the bottom row is doubled, and what happens when there are too few.

Hook for a half-round gutter: the front tab on the left, the drilled strap on the right

How gutter hooks and gutters are fitted

Hooks go on every rafter, the fall is 2 mm per metre, and the line is held with two taut strings. Over 10 m you need two outlets, falling from the middle.

Copper hook — its arc matches the developed width of the gutter

Which gutter size you need

Gutter size follows the roof area draining into it: up to 83 m² use 280 mm with an ø80 pipe, up to 150 m² use 333 mm with ø100, above that 400 mm.

Fence made from anthracite fence strips

A fence from metal strips: spacing and quantity

The strip is 69 mm wide. At a 40 mm gap you use 9 pieces per metre of fence. The spacing jig is an ordinary 20x40 mm rectangular tube.

Square gutter outlet hopper with a downpipe spigot

Why a hopper increases flow by 40%

Connecting gutter to downpipe through a hopper gives 40% more flow without gurgling. Fitting is quick and needs no soldering.

Something unclear?

Call and ask. Two minutes on the phone beats three pages of reading.

066 6825-441