ArchiGreen

The SP SS 120/80 is an L-shaped gravel retention trim with two different upright sides: 80 and 120 mm. It is made of stainless steel. Lateral perforations are present as advised in the German FLL Guidelines. These gravel retention trims aka ballast retention trims or gravel boards are primarily designed to neatly separate gravel strips from the engineered growing substrate on a green roof without hindering drainage properties and also to sustain fire prevention regulations. ArchiGreen^®Ltd is a producer of ballast retention trims (gravel boards) for green roofs and can manufacture metal retention trims of various heights at the customer's request.

The SP AL 120/80 and the SP AL 90/60 are L-shaped gravel retention trims with two different upright sides: 80 and 120 mm; 90 and 60 mm respectively. They are made of high-strength aluminium alloy. Lateral perforations are present as advised in the German FLL Guidelines. These gravel retention trims aka ballast retention trims or gravel boards are primarily designed to neatly separate gravel strips from the engineered growing substrate on a green roof without hindering drainage properties and also to sustain fire prevention regulations. ArchiGreen^®Ltd is a producer of ballast retention trims (gravel boards) for green roofs and can manufacture metal retention trims of various heights at the customer's request.