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Silo Protection Grille: Cover Protection Against Hail and Birds

One hole is enough to make the whole cover useless. Protection grilles at 220 and 240 grams lie over the sheet and take the damage instead.

Silo Protection Grille: The Insurance for Your Sheet

A silage sheet keeps the air out reliably as long as it is undamaged. It is thin, though, and everything that comes from above goes straight at it: hailstones, crows trying their luck on the smooth surface, cats walking over it, branches in a storm. A single hole is enough for air to circulate under the cover. The protection grille takes that load so the sheet does not have to.

220 or 240 grams

The grilles here are 220 and 240 grams per square metre. That weight tells you how dense and how heavy the fabric is. The heavier grille at 240 grams takes more punishment and lies quieter of its own accord, even in wind. The 220 gram version is easier to handle and makes sense where the clamp is opened more often or where the main job is keeping birds off. Neither one replaces the sheet, they protect it. And both still need weight on top, usually gravel bags, so the whole assembly stays where you put it.

Laying it correctly

The grille goes straight onto the sheet with no gap, otherwise it lifts in the wind and chafes. Pull it far enough over the clamp edge at the sides that it can be weighted down as well, and then put the bags on the grille rather than on the bare sheet. That spreads the weight and keeps pressure points off the sheet along the edges. When you open the face, fold back only the area you actually need and leave everything else weighted down. The smaller the open area, the less air reaches the rest of the silage. Roll the grille up at the end of the season instead of bundling it, and it goes back out next year without twists.

Frequently Asked Questions

Does the grille replace the sheet?
No. The grille is not airtight, it only protects the sheet underneath from mechanical damage.

Do I still need gravel bags?
Yes. The grille does not hold the sheet down, so you still need weight across the whole surface.

How long does a grille like this last?
With careful handling, several years. Storing it dry and in the shade extends its life noticeably.

A Protection Grille Over the Silage Film

A silage sheet keeps the air out reliably as long as it is undamaged. It is thin, though, and everything that comes from above goes straight at it: hailstones, crows, cats, branches in a storm. A single hole is enough for air to circulate underneath and spoil the top layer. That is exactly the load the protection grille takes on. The versions here are 220 and 240 grams per square metre. The heavier grille takes more punishment and lies quieter in the wind, the lighter one is easier to handle and is plenty when the main job is keeping birds off. Lay the grille straight onto the sheet with no gap, otherwise it lifts in the wind and chafes. Pull it over the clamp edge at the sides and then put the gravel bags on the grille rather than on the bare sheet, so the weight spreads and no pressure points form along the edges.