Green Roof Minimum Pitch

What is the maximum pitch possible for a green roof with vegetation blankets.

Green roof minimum pitch.

Sloped roofs retain less water in general and the moisture content varies from the ridge to the eave lowest edge of the roof. To find the best angle for a greenhouse roof take your latitude and add 20 degrees. Generally suitable for inverted roofs if applicable. But since there is still a wide variety of slate roofing systems there are occasions when the minimum pitch can go down to as low as 15 0 depending on the uniqueness of the roof.

For roof lengths greater than 6 metres an anti slip system may be required sublect to individual project assessment. Roof slope of 1 4 per foot minimum is required on all roof systems. Slope should be built into the structure on new buildings. However you can only use this pitch with built up roofing or specialized synthetic roofing.

It is the task of the designer to make adjustments in the green roof system accordingly e g. Secondary roof drains are to be positioned on the roof so that water will drains to the primary upslope and they should not be installed at the same elevation as the primary. While the logic behind this rule is sound it is a dramatic oversimplification that can lead to costly and. The minimum pitch for a roof is 1 4 12 which translates to 1 4 inch rise to 12 inches of run.

Owens corning produces high quality asphalt coating asphalt sealants and adhesives for asphalt shingles. Solar greenhouse designers often cite a rule of thumb along the lines of. Green roofs have excellent noise attenuation especially for low frequency sounds. We can even help you find a professional to install it.

Traditionally a minimum roof pitch of 20 was recommended in bs 5534 but modern tiles and slates have now been designed for applications as low as 15. Permanent solution for pitched green roofs without a specialised anti slip system. Let owens corning help you determine when it is time for a new roof and then let us help you choose the shingles for your roof that are right for you. Sempergreen has developed various systems which differ in structure in keeping with the pitch of the roof.

Varied substrate depths and vegetation forms possible. An extensive green roof can reduce sound from outside by 40 decibels while an intensive green roof can reduce sound by 46 50 decibels peck et al. Experience the total owens corning roofing system and high quality roofing shingles. It is uncommon to find a roof below 15 but for those very low pitch applications there are interlocking clay pantiles available suitable for use down to 12 5.

Green roofs can increase a building s marketability. With regards to the pitch the building standard code bs 5534 recommends a minimum pitch of 20 0 for slate roofs.