Why Are There Rocks On The Roof

Remember trad italian roofs have much bigger overhangs on the eaves the bit which overhangs the long sides of a pitched roof and also on the verges which overhang the gables.

Why are there rocks on the roof.

The rocks also keep the sun s rays from the membrane thus allowing it to last many years. The rocks keep the roof down. Ideally the stones are river gravel which has smooth edges and won t cut into the roof when somebody walks around on it. There are numerous other benefits of a pebble roof covering.

If the roof is what is called a ballast roof it is not fastened or adhered down throughout the whole roof. Pebbles or small rocks spread several inches thick over the outer roof membrane will protect the roof membrane from cracking and peeling due to prolonged sun exposure thereby extending the life of the roof by several years. If the tar dry s out. Rocks break up snow and ice to prevent injuries from the snow and ice sliding off the roof when the temperature warms up.

Yes it is for wind lift. The rocks do a great job of this and in my opinion works better than any coatings. The gravel also acts as a protective measure to prevent natural debris such as leaves. The rocks represented the fantasy of the moon which became a reality soon after.

The single ply membrane usually epdm or tpo is not adhered by screws or glue. The gravel provides a better grip for foot traffic when conducting maintenance or repairs. July 2nd 2017 at 6 55 pm. Rocks are placed on commercial flat roofs for many different reasons.

Talk to ten roofing contractors and you ll get ten answers on what the gravel is for but this seems to be the consensus. The pebbles act as filters for the roof drains. The rocks are on top of tar the tar keeps the roof from leaking but the small stones are there to protect the tar and hold moisture so the tar does not dry out completely. Easy it was to reflect on the atomic space age.